rtl8720dn: add Rpc_tcpip_adapter_init_with_timeout()

2026-08-19 06:03:57 +00:00 · 2022-08-01 17:37:15 +09:00
140 changed files with 1373 additions and 2281 deletions
@@ -1,68 +1,3 @@
-0.23.0
---
- **new devices**
-    - Add GC9A01 Driver (#452)
-    - Initial support for VL6180x sensor
-
- **enhancements**
-    - **rtl8720dn**
-        - refactor by bringing this driver more in line with wifinina and espat
-    - **ssd1306**
-        - add getter method to the current buffer
-    - **makeybutton**
-        - revise to better match the algorithm defined by the original
-    - **espat,wifinina,rtl8720dn**
-        - change ssid/pass from const to var
-
- **bugfixes**
-    - **microbitmatrix**
-        - fix inverted axis
-    - **espat**
-        - Trim quotes from IP returned by espat's GetDNS()
-    - **all**
-        - correct go fmt
-
- **examples**
-    - **rtl8720dn**
-        - remove wifi setting
-        - add call to optional debug setting
-        - update all remaining examples for refactored API
-
-
-0.22.0
---
- **new devices**
-    - epd: add waveshare 2.9in (v1)
-    - makeybutton: add driver for MakeyMakey-like button
-
- **enhancements**
-    - **rtl8720dn**
-        - add UDP close function
-        - improve error handling
-    - **net/http**
-        - improve header parsing
-        - add last-will-and-testament to MQTT
-    - **net/mqtt**
-        - adds keepalive pinging, disconnect, and graceful goroutine cleanup
-        - support for cookies when https
-        - add support for retained messsages
-
- **bugfixes**
-    - irremote: Fix irremote reporting incorrect NEC addresses and command codes (#422)
-    - net/http:  Fix http.Get() with port specification
-
- **build**
-    - Makefile recursively finds unit-tests
-    - switching to GHA
-
- **updates**
-    - update tinyfont to v0.3.0
-    - update tinyfs to v0.2.0
-
- **examples**
-    - rtl8720dn: add ./examples/rtl8720dn/version
-
-
 0.21.0
 ---
 - **new devices**
@@ -53,8 +53,6 @@ smoke-test:
 	@md5sum ./build/test.hex
 	tinygo build -size short -o ./build/test.hex -target=pyportal ./examples/flash/console/qspi
 	@md5sum ./build/test.hex
-	tinygo build -size short -o ./build/test.hex -target=microbit ./examples/gc9a01/main.go
-	@md5sum ./build/test.hex
 	tinygo build -size short -o ./build/test.hex -target=feather-m0 ./examples/gps/i2c/main.go
 	@md5sum ./build/test.hex
 	tinygo build -size short -o ./build/test.hex -target=feather-m0 ./examples/gps/uart/main.go
@@ -145,8 +143,6 @@ smoke-test:
 	@md5sum ./build/test.hex
 	tinygo build -size short -o ./build/test.hex -target=itsybitsy-m0 ./examples/vl53l1x/main.go
 	@md5sum ./build/test.hex
-	tinygo build -size short -o ./build/test.hex -target=itsybitsy-m0 ./examples/vl6180x/main.go
-	@md5sum ./build/test.hex
 	tinygo build -size short -o ./build/test.hex -target=microbit ./examples/waveshare-epd/epd2in13/main.go
 	@md5sum ./build/test.hex
 	tinygo build -size short -o ./build/test.hex -target=microbit ./examples/waveshare-epd/epd2in13x/main.go
@@ -52,7 +52,7 @@ func main() {

 ## Currently supported devices

-The following 83 devices are supported.
+The following 81 devices are supported.

 | Device Name                                                                                                                                                                                         | Interface Type |
 |-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|-------------|
@@ -135,12 +135,9 @@ The following 83 devices are supported.
 | [UC8151 All-in-one driver IC for ESL](https://www.buydisplay.com/download/ic/UC8151C.pdf)                                                                                          | I2C |
 | [VEML6070 UV light sensor](https://www.vishay.com/docs/84277/veml6070.pdf)                                                                                                                          | I2C |
 | [VL53L1X time-of-flight distance sensor](https://www.st.com/resource/en/datasheet/vl53l1x.pdf)                                                                                                      | I2C |
-| [VL6180X time-of-flight distance sensor](https://www.st.com/resource/en/datasheet/vl6180x.pdf)                                                                                                      | I2C |
 | [Waveshare 2.13" (B & C) e-paper display](https://www.waveshare.com/w/upload/d/d3/2.13inch-e-paper-b-Specification.pdf)                                                                             | SPI |
 | [Waveshare 2.13" e-paper display](https://www.waveshare.com/w/upload/e/e6/2.13inch_e-Paper_Datasheet.pdf)                                                                                           | SPI |
-| [Waveshare 2.9" e-paper display (V1)](https://www.waveshare.com/w/upload/e/e6/2.9inch_e-Paper_Datasheet.pdf)                                                                                        | SPI |
 | [Waveshare 4.2" e-paper B/W display](https://www.waveshare.com/w/upload/6/6a/4.2inch-e-paper-specification.pdf)                                                                                     | SPI |
-| [Waveshare GC9A01 TFT round display](https://www.waveshare.com/w/upload/5/5e/GC9A01A.pdf)                                                                             | SPI |
 | [WS2812 RGB LED](https://cdn-shop.adafruit.com/datasheets/WS2812.pdf)                                                                                                                               | GPIO |
 | [XPT2046 touch controller](http://grobotronics.com/images/datasheets/xpt2046-datasheet.pdf)                                                                                                         | GPIO |
 | [Semtech SX126x Lora](https://www.semtech.com/products/wireless-rf/lora-transceiv-ers/sx1261)                                                                                                       | SPI |
@@ -1,6 +1,7 @@
 // Package adt7410 provides a driver for the adt7410 I2C Temperature Sensor.
 //
 // Datasheet: https://www.analog.com/media/en/technical-documentation/data-sheets/ADT7410.pdf
+//
 package adt7410 // import "tinygo.org/x/drivers/adt7410"

 import (
@@ -3,6 +3,7 @@
 // Datasheet EN: http://www.analog.com/media/en/technical-documentation/data-sheets/ADXL345.pdf
 //
 // Datasheet JP: http://www.analog.com/media/jp/technical-documentation/data-sheets/ADXL345_jp.pdf
+//
 package adxl345 // import "tinygo.org/x/drivers/adxl345"

 import "tinygo.org/x/drivers"
@@ -2,6 +2,7 @@
 // a digital proximity, ambient light, RGB and gesture sensor.
 //
 // Datasheet: https://cdn.sparkfun.com/assets/learn_tutorials/3/2/1/Avago-APDS-9960-datasheet.pdf
+//
 package apds9960

 import (
@@ -3,6 +3,7 @@
 //
 // http://www.x-powers.com/en.php/Info/product_detail/article_id/29
 // Datasheet: https://github.com/m5stack/M5-Schematic/blob/master/Core/AXP192%20Datasheet_v1.1_en_draft_2211.pdf
+//
 package axp192 // import "tinygo.org/x/drivers/axp192"

 import (
@@ -2,6 +2,7 @@
 //
 // Datasheet:
 // https://www.mouser.com/ds/2/348/bh1750fvi-e-186247.pdf
+//
 package bh1750 // import "tinygo.org/x/drivers/bh1750"

 import (
@@ -1,6 +1,7 @@
 // Package blinkm implements a driver for the BlinkM I2C RGB LED.
 //
 // Datasheet: http://thingm.com/fileadmin/thingm/downloads/BlinkM_datasheet.pdf
+//
 package blinkm // import "tinygo.org/x/drivers/blinkm"

 import "tinygo.org/x/drivers"
@@ -3,6 +3,7 @@
 //
 // Datasheet:
 // https://cdn-shop.adafruit.com/datasheets/BST-BME280_DS001-10.pdf
+//
 package bme280

 import (
@@ -148,7 +149,6 @@ func (d *Device) ReadHumidity() (int32, error) {
 // ReadAltitude returns the current altitude in meters based on the
 // current barometric pressure and estimated pressure at sea level.
 // Calculation is based on code from Adafruit BME280 library
-//
 // 	https://github.com/adafruit/Adafruit_BME280_Library
 func (d *Device) ReadAltitude() (alt int32, err error) {
 	mPa, _ := d.ReadPressure()
@@ -3,6 +3,7 @@
 //
 // Datasheet:
 // https://cdn-shop.adafruit.com/datasheets/BST-BMP180-DS000-09.pdf
+//
 package bmp180 // import "tinygo.org/x/drivers/bmp180"

 import (
@@ -1,4 +1,5 @@
 // Package buzzer provides a very simplistic driver for a connected buzzer or low-fidelity speaker.
+//
 package buzzer // import "tinygo.org/x/drivers/buzzer"

 import (
@@ -38,4 +38,5 @@
 // Each individual driver is contained within its own sub-package within this package and
 // there are no interdependencies in order to minimize the final size of compiled code that
 // uses any of these drivers.
+//
 package drivers // import "tinygo.org/x/drivers"
@@ -2,6 +2,7 @@
 //
 // Datasheet:
 // https://datasheets.maximintegrated.com/en/ds/DS1307.pdf
+//
 package ds1307 // import "tinygo.org/x/drivers/ds1307"

 import (
@@ -15,6 +15,7 @@
 //
 // AT command set:
 // https://www.espressif.com/sites/default/files/documentation/4a-esp8266_at_instruction_set_en.pdf
+//
 package espat // import "tinygo.org/x/drivers/espat"

 import (
@@ -29,7 +29,7 @@ func (d *Device) GetDNS(domain string) (string, error) {
 		return "", errors.New("Invalid domain lookup result")
 	}
 	res := strings.Split(r[1], "\r\n")
-	return strings.Trim(res[0], `"`), nil
+	return res[0], nil
 }

 // ConnectTCPSocket creates a new TCP socket connection for the ESP8266/ESP32.
@@ -6,6 +6,7 @@
 //
 // More information on the Espressif AT command set at:
 // https://www.espressif.com/sites/default/files/documentation/4a-esp8266_at_instruction_set_en.pdf
+//
 package main

 import (
@@ -18,11 +19,9 @@ import (
 // change actAsAP to true to act as an access point instead of connecting to one.
 const actAsAP = false

-var (
-	// access point info
-	ssid string
-	pass string
-)
+// access point info
+const ssid = "YOURSSID"
+const pass = "YOURPASS"

 // these are the default pins for the Arduino Nano33 IoT.
 // change these to connect to a different UART or pins for the ESP8266/ESP32
@@ -3,6 +3,7 @@
 //
 // In other words:
 // Your computer <--> UART0 <--> MCU <--> UART1 <--> ESP8266 <--> INTERNET
+//
 package main

 import (
@@ -16,11 +17,9 @@ import (
 // change actAsAP to true to act as an access point instead of connecting to one.
 const actAsAP = false

-var (
-	// access point info
-	ssid string
-	pass string
-)
+// access point info
+const ssid = "YOURSSID"
+const pass = "YOURPASS"

 // these are the default pins for the Arduino Nano33 IoT.
 // change these to connect to a different UART or pins for the ESP8266/ESP32
@@ -3,6 +3,7 @@
 //
 // In other words:
 // Your computer <--> UART0 <--> MCU <--> UART1 <--> ESP8266
+//
 package main

 import (
@@ -13,11 +14,9 @@ import (
 	"tinygo.org/x/drivers/net"
 )

-var (
-	// access point info
-	ssid string
-	pass string
-)
+// access point info
+const ssid = "YOURSSID"
+const pass = "YOURPASS"

 // IP address of the listener aka "hub". Replace with your own info.
 const hubIP = "0.0.0.0"
@@ -8,6 +8,7 @@
 // You must install the Paho MQTT package to build this program:
 //
 // 		go get -u github.com/eclipse/paho.mqtt.golang
+//
 package main

 import (
@@ -19,11 +20,9 @@ import (
 	"tinygo.org/x/drivers/net/mqtt"
 )

-var (
-	// access point info
-	ssid string
-	pass string
-)
+// access point info
+const ssid = "YOURSSID"
+const pass = "YOURPASS"

 // IP address of the MQTT broker to use. Replace with your own info.
 const server = "tcp://test.mosquitto.org:1883"
@@ -8,6 +8,7 @@
 // You must also install the Paho MQTT package to build this program:
 //
 // 		go get -u github.com/eclipse/paho.mqtt.golang
+//
 package main

 import (
@@ -20,11 +21,9 @@ import (
 	"tinygo.org/x/drivers/net/mqtt"
 )

-var (
-	// access point info
-	ssid string
-	pass string
-)
+// access point info
+const ssid = "YOURSSID"
+const pass = "YOURPASS"

 // IP address of the MQTT broker to use. Replace with your own info.
 //const server = "tcp://test.mosquitto.org:1883"
@@ -3,6 +3,7 @@
 //
 // In other words:
 // Your computer <--> UART0 <--> MCU <--> UART1 <--> ESP8266
+//
 package main

 import (
@@ -13,11 +14,9 @@ import (
 	"tinygo.org/x/drivers/net"
 )

-var (
-	// access point info
-	ssid string
-	pass string
-)
+// access point info
+const ssid = "YOURSSID"
+const pass = "YOURPASS"

 // IP address of the server aka "hub". Replace with your own info.
 const serverIP = "0.0.0.0"
@@ -1,39 +0,0 @@
-package main
-
-import (
-	"machine"
-	"time"
-
-	"image/color"
-
-	"tinygo.org/x/drivers/gc9a01"
-)
-
-func main() {
-	machine.SPI0.Configure(machine.SPIConfig{
-		Frequency: 80000000,
-	})
-	display := gc9a01.New(machine.SPI0, machine.P6, machine.P7, machine.P8, machine.P9)
-	display.Configure(gc9a01.Config{Orientation: gc9a01.HORIZONTAL, Width: 240, Height: 240})
-
-	width, height := display.Size()
-
-	white := color.RGBA{255, 255, 255, 255}
-	red := color.RGBA{255, 0, 0, 255}
-	blue := color.RGBA{0, 0, 255, 255}
-	green := color.RGBA{0, 255, 0, 255}
-	black := color.RGBA{0, 0, 0, 255}
-
-	display.FillScreen(black)
-
-	display.FillRectangle(0, 0, width/2, height/2, white)
-	display.FillRectangle(width/2, 0, width/2, height/2, red)
-	display.FillRectangle(0, height/2, width/2, height/2, green)
-	display.FillRectangle(width/2, height/2, width/2, height/2, blue)
-	display.FillRectangle(width/4, height/4, width/2, height/2, black)
-
-	for {
-		time.Sleep(time.Hour)
-	}
-
-}
@@ -9,6 +9,8 @@ import (
 	"tinygo.org/x/drivers/ili9341"
 )

+var ()
+
 func InitDisplay() *ili9341.Device {
 	machine.SPI0.Configure(machine.SPIConfig{
 		SCK:       machine.SPI0_SCK_PIN,
@@ -9,7 +9,7 @@ import (

 var (
 	led    machine.Pin = machine.LED
-	button machine.Pin = machine.D10
+	button machine.Pin = machine.BUTTON
 	key    *makeybutton.Button
 )

@@ -25,7 +25,6 @@ func main() {
 		case makeybutton.Released:
 			led.Low()
 		}
-		// the more frequent the more responsive
-		time.Sleep(50 * time.Millisecond)
+		time.Sleep(100 * time.Millisecond)
 	}
 }
@@ -2,6 +2,7 @@
 // to read data from the onboard MEMS microphone.
 //
 // Uses ideas from the https://github.com/adafruit/Adafruit_CircuitPlayground repo.
+//
 package main

 import (
@@ -12,11 +12,10 @@
 // You can check that mqttpub is running successfully with the following command.
 //
 // 		mosquitto_sub -h test.mosquitto.org -t tinygo
+//
 package main

 import (
-	"machine"
-
 	"fmt"
 	"math/rand"
 	"time"
@@ -29,14 +28,14 @@ import (
 // You can override the setting with the init() in another source code.
 // func init() {
 //    ssid = "your-ssid"
-//    pass = "your-password"
+//    password = "your-password"
 //    debug = true
 //    server = "tinygo.org"
 // }

 var (
 	ssid     string
-	pass   string
+	password string
 	server   string = "tcp://test.mosquitto.org:1883"
 	debug           = false
 )
@@ -45,7 +44,7 @@ var buf [0x400]byte

 var lastRequestTime time.Time
 var conn net.Conn
-var adaptor *rtl8720dn.Driver
+var adaptor *rtl8720dn.RTL8720DN

 func main() {
 	err := run()
@@ -60,17 +59,18 @@ var (
 )

 func run() error {
-	// change the UART and pins as needed for platforms other than the WioTerminal.
-	adaptor = rtl8720dn.New(machine.UART3, machine.PB24, machine.PC24, machine.RTL8720D_CHIP_PU)
-	adaptor.Debug(debug)
-	adaptor.Configure()
+	rtl, err := setupRTL8720DN()
+	if err != nil {
+		return err
+	}
+	net.UseDriver(rtl)

-	err := adaptor.ConnectToAccessPoint(ssid, pass, 10*time.Second)
+	err = rtl.ConnectToAccessPoint(ssid, password, 10*time.Second)
 	if err != nil {
 		return err
 	}

-	ip, subnet, gateway, err := adaptor.GetIP()
+	ip, subnet, gateway, err := rtl.GetIP()
 	if err != nil {
 		return err
 	}
@@ -0,0 +1,74 @@
+//go:build wioterminal
+// +build wioterminal
+
+package main
+
+import (
+	"device/sam"
+	"machine"
+	"runtime/interrupt"
+	"time"
+
+	"tinygo.org/x/drivers/rtl8720dn"
+)
+
+var (
+	uart UARTx
+)
+
+func handleInterrupt(interrupt.Interrupt) {
+	// should reset IRQ
+	uart.Receive(byte((uart.Bus.DATA.Get() & 0xFF)))
+	uart.Bus.INTFLAG.SetBits(sam.SERCOM_USART_INT_INTFLAG_RXC)
+}
+
+func setupRTL8720DN() (*rtl8720dn.RTL8720DN, error) {
+	machine.RTL8720D_CHIP_PU.Configure(machine.PinConfig{Mode: machine.PinOutput})
+	machine.RTL8720D_CHIP_PU.Low()
+	time.Sleep(100 * time.Millisecond)
+	machine.RTL8720D_CHIP_PU.High()
+	time.Sleep(1000 * time.Millisecond)
+	if debug {
+		waitSerial()
+	}
+
+	uart = UARTx{
+		UART: &machine.UART{
+			Buffer: machine.NewRingBuffer(),
+			Bus:    sam.SERCOM0_USART_INT,
+			SERCOM: 0,
+		},
+	}
+
+	uart.Interrupt = interrupt.New(sam.IRQ_SERCOM0_2, handleInterrupt)
+	uart.Configure(machine.UARTConfig{TX: machine.PB24, RX: machine.PC24, BaudRate: 614400})
+
+	rtl := rtl8720dn.New(uart)
+	rtl.Debug(debug)
+
+	_, err := rtl.Rpc_tcpip_adapter_init()
+	if err != nil {
+		return nil, err
+	}
+
+	return rtl, nil
+}
+
+// Wait for user to open serial console
+func waitSerial() {
+	for !machine.Serial.DTR() {
+		time.Sleep(100 * time.Millisecond)
+	}
+}
+
+type UARTx struct {
+	*machine.UART
+}
+
+func (u UARTx) Read(p []byte) (n int, err error) {
+	if u.Buffered() == 0 {
+		time.Sleep(1 * time.Millisecond)
+		return 0, nil
+	}
+	return u.UART.Read(p)
+}
@@ -13,11 +13,10 @@
 //
 // 		mosquitto_sub -h test.mosquitto.org -t tinygo/tx
 // 		mosquitto_pub -h test.mosquitto.org -t tinygo/rx -m "hello world"
+//
 package main

 import (
-	"machine"
-
 	"fmt"
 	"math/rand"
 	"time"
@@ -30,14 +29,14 @@ import (
 // You can override the setting with the init() in another source code.
 // func init() {
 //    ssid = "your-ssid"
-//    pass = "your-password"
+//    password = "your-password"
 //    debug = true
 //    server = "tinygo.org"
 // }

 var (
 	ssid     string
-	pass   string
+	password string
 	server   string = "tcp://test.mosquitto.org:1883"
 	debug           = false
 )
@@ -46,7 +45,7 @@ var buf [0x400]byte

 var lastRequestTime time.Time
 var conn net.Conn
-var adaptor *rtl8720dn.Driver
+var adaptor *rtl8720dn.RTL8720DN

 func main() {
 	err := run()
@@ -69,17 +68,18 @@ func subHandler(client mqtt.Client, msg mqtt.Message) {
 }

 func run() error {
-	// change the UART and pins as needed for platforms other than the WioTerminal.
-	adaptor = rtl8720dn.New(machine.UART3, machine.PB24, machine.PC24, machine.RTL8720D_CHIP_PU)
-	adaptor.Debug(debug)
-	adaptor.Configure()
+	rtl, err := setupRTL8720DN()
+	if err != nil {
+		return err
+	}
+	net.UseDriver(rtl)

-	err := adaptor.ConnectToAccessPoint(ssid, pass, 10*time.Second)
+	err = rtl.ConnectToAccessPoint(ssid, password, 10*time.Second)
 	if err != nil {
 		return err
 	}

-	ip, subnet, gateway, err := adaptor.GetIP()
+	ip, subnet, gateway, err := rtl.GetIP()
 	if err != nil {
 		return err
 	}
@@ -0,0 +1,74 @@
+//go:build wioterminal
+// +build wioterminal
+
+package main
+
+import (
+	"device/sam"
+	"machine"
+	"runtime/interrupt"
+	"time"
+
+	"tinygo.org/x/drivers/rtl8720dn"
+)
+
+var (
+	uart UARTx
+)
+
+func handleInterrupt(interrupt.Interrupt) {
+	// should reset IRQ
+	uart.Receive(byte((uart.Bus.DATA.Get() & 0xFF)))
+	uart.Bus.INTFLAG.SetBits(sam.SERCOM_USART_INT_INTFLAG_RXC)
+}
+
+func setupRTL8720DN() (*rtl8720dn.RTL8720DN, error) {
+	machine.RTL8720D_CHIP_PU.Configure(machine.PinConfig{Mode: machine.PinOutput})
+	machine.RTL8720D_CHIP_PU.Low()
+	time.Sleep(100 * time.Millisecond)
+	machine.RTL8720D_CHIP_PU.High()
+	time.Sleep(1000 * time.Millisecond)
+	if debug {
+		waitSerial()
+	}
+
+	uart = UARTx{
+		UART: &machine.UART{
+			Buffer: machine.NewRingBuffer(),
+			Bus:    sam.SERCOM0_USART_INT,
+			SERCOM: 0,
+		},
+	}
+
+	uart.Interrupt = interrupt.New(sam.IRQ_SERCOM0_2, handleInterrupt)
+	uart.Configure(machine.UARTConfig{TX: machine.PB24, RX: machine.PC24, BaudRate: 614400})
+
+	rtl := rtl8720dn.New(uart)
+	rtl.Debug(debug)
+
+	_, err := rtl.Rpc_tcpip_adapter_init()
+	if err != nil {
+		return nil, err
+	}
+
+	return rtl, nil
+}
+
+// Wait for user to open serial console
+func waitSerial() {
+	for !machine.Serial.DTR() {
+		time.Sleep(100 * time.Millisecond)
+	}
+}
+
+type UARTx struct {
+	*machine.UART
+}
+
+func (u UARTx) Read(p []byte) (n int, err error) {
+	if u.Buffered() == 0 {
+		time.Sleep(1 * time.Millisecond)
+		return 0, nil
+	}
+	return u.UART.Read(p)
+}
@@ -4,29 +4,26 @@
 package main

 import (
-	"machine"
-
 	"errors"
 	"fmt"
 	"runtime"
 	"time"

 	"tinygo.org/x/drivers/net"
-	"tinygo.org/x/drivers/rtl8720dn"
 )

 // IP address of the server aka "hub". Replace with your own info.
 // You can override the setting with the init() in another source code.
 // func init() {
 //    ssid = "your-ssid"
-//    pass = "your-password"
+//    password = "your-password"
 //    ntpHost = "129.6.15.29"
 //    debug = true
 // }

 var (
 	ssid     string
-	pass    string
+	password string
 	ntpHost  = "129.6.15.29"
 	debug    = false
 )
@@ -44,16 +41,18 @@ func main() {
 }

 func run() error {
-	adaptor := rtl8720dn.New(machine.UART3, machine.PB24, machine.PC24, machine.RTL8720D_CHIP_PU)
-	adaptor.Debug(debug)
-	adaptor.Configure()
+	rtl, err := setupRTL8720DN()
+	if err != nil {
+		return err
+	}
+	net.UseDriver(rtl)

-	err := adaptor.ConnectToAccessPoint(ssid, pass, 10*time.Second)
+	err = rtl.ConnectToAccessPoint(ssid, password, 10*time.Second)
 	if err != nil {
 		return err
 	}

-	ip, subnet, gateway, err := adaptor.GetIP()
+	ip, subnet, gateway, err := rtl.GetIP()
 	if err != nil {
 		return err
 	}
@@ -0,0 +1,72 @@
+//go:build wioterminal
+// +build wioterminal
+
+package main
+
+import (
+	"device/sam"
+	"machine"
+	"runtime/interrupt"
+	"time"
+
+	"tinygo.org/x/drivers/rtl8720dn"
+)
+
+var (
+	uart UARTx
+)
+
+func handleInterrupt(interrupt.Interrupt) {
+	// should reset IRQ
+	uart.Receive(byte((uart.Bus.DATA.Get() & 0xFF)))
+	uart.Bus.INTFLAG.SetBits(sam.SERCOM_USART_INT_INTFLAG_RXC)
+}
+
+func setupRTL8720DN() (*rtl8720dn.RTL8720DN, error) {
+	machine.RTL8720D_CHIP_PU.Configure(machine.PinConfig{Mode: machine.PinOutput})
+	machine.RTL8720D_CHIP_PU.Low()
+	time.Sleep(100 * time.Millisecond)
+	machine.RTL8720D_CHIP_PU.High()
+	time.Sleep(1000 * time.Millisecond)
+	waitSerial()
+
+	uart = UARTx{
+		UART: &machine.UART{
+			Buffer: machine.NewRingBuffer(),
+			Bus:    sam.SERCOM0_USART_INT,
+			SERCOM: 0,
+		},
+	}
+
+	uart.Interrupt = interrupt.New(sam.IRQ_SERCOM0_2, handleInterrupt)
+	uart.Configure(machine.UARTConfig{TX: machine.PB24, RX: machine.PC24, BaudRate: 614400})
+
+	rtl := rtl8720dn.New(uart)
+	rtl.Debug(debug)
+
+	_, err := rtl.Rpc_tcpip_adapter_init()
+	if err != nil {
+		return nil, err
+	}
+
+	return rtl, nil
+}
+
+// Wait for user to open serial console
+func waitSerial() {
+	for !machine.Serial.DTR() {
+		time.Sleep(100 * time.Millisecond)
+	}
+}
+
+type UARTx struct {
+	*machine.UART
+}
+
+func (u UARTx) Read(p []byte) (n int, err error) {
+	if u.Buffered() == 0 {
+		time.Sleep(1 * time.Millisecond)
+		return 0, nil
+	}
+	return u.UART.Read(p)
+}
@@ -4,30 +4,28 @@
 // You can open a server to accept connections from this program using:
 //
 // nc -w 5 -lk 8080
+//
 package main

 import (
-	"machine"
-
 	"bytes"
 	"fmt"
 	"time"

 	"tinygo.org/x/drivers/net"
-	"tinygo.org/x/drivers/rtl8720dn"
 )

 // You can override the setting with the init() in another source code.
 // func init() {
-//    ssid = "your-ssid"
-//    pass = "your-password"
+//    ssid = "sghome-gw"
+//    password = "3af25537b4524"
 //    serverIP = "192.168.1.119"
 //    debug = true
 // }

 var (
 	ssid     string
-	pass     string
+	password string
 	serverIP = ""
 	debug    = false
 )
@@ -43,16 +41,18 @@ func main() {
 }

 func run() error {
-	adaptor := rtl8720dn.New(machine.UART3, machine.PB24, machine.PC24, machine.RTL8720D_CHIP_PU)
-	adaptor.Debug(debug)
-	adaptor.Configure()
+	rtl, err := setupRTL8720DN()
+	if err != nil {
+		return err
+	}
+	net.UseDriver(rtl)

-	err := adaptor.ConnectToAccessPoint(ssid, pass, 10*time.Second)
+	err = rtl.ConnectToAccessPoint(ssid, password, 10*time.Second)
 	if err != nil {
 		return err
 	}

-	ip, subnet, gateway, err := adaptor.GetIP()
+	ip, subnet, gateway, err := rtl.GetIP()
 	if err != nil {
 		return err
 	}
@@ -0,0 +1,72 @@
+//go:build wioterminal
+// +build wioterminal
+
+package main
+
+import (
+	"device/sam"
+	"machine"
+	"runtime/interrupt"
+	"time"
+
+	"tinygo.org/x/drivers/rtl8720dn"
+)
+
+var (
+	uart UARTx
+)
+
+func handleInterrupt(interrupt.Interrupt) {
+	// should reset IRQ
+	uart.Receive(byte((uart.Bus.DATA.Get() & 0xFF)))
+	uart.Bus.INTFLAG.SetBits(sam.SERCOM_USART_INT_INTFLAG_RXC)
+}
+
+func setupRTL8720DN() (*rtl8720dn.RTL8720DN, error) {
+	machine.RTL8720D_CHIP_PU.Configure(machine.PinConfig{Mode: machine.PinOutput})
+	machine.RTL8720D_CHIP_PU.Low()
+	time.Sleep(100 * time.Millisecond)
+	machine.RTL8720D_CHIP_PU.High()
+	time.Sleep(1000 * time.Millisecond)
+	waitSerial()
+
+	uart = UARTx{
+		UART: &machine.UART{
+			Buffer: machine.NewRingBuffer(),
+			Bus:    sam.SERCOM0_USART_INT,
+			SERCOM: 0,
+		},
+	}
+
+	uart.Interrupt = interrupt.New(sam.IRQ_SERCOM0_2, handleInterrupt)
+	uart.Configure(machine.UARTConfig{TX: machine.PB24, RX: machine.PC24, BaudRate: 614400})
+
+	rtl := rtl8720dn.New(uart)
+	rtl.Debug(debug)
+
+	_, err := rtl.Rpc_tcpip_adapter_init()
+	if err != nil {
+		return nil, err
+	}
+
+	return rtl, nil
+}
+
+// Wait for user to open serial console
+func waitSerial() {
+	for !machine.Serial.DTR() {
+		time.Sleep(100 * time.Millisecond)
+	}
+}
+
+type UARTx struct {
+	*machine.UART
+}
+
+func (u UARTx) Read(p []byte) (n int, err error) {
+	if u.Buffered() == 0 {
+		time.Sleep(1 * time.Millisecond)
+		return 0, nil
+	}
+	return u.UART.Read(p)
+}
@@ -1,8 +1,6 @@
 package main

 import (
-	"machine"
-
 	"bufio"
 	"fmt"
 	"strings"
@@ -16,7 +14,7 @@ import (
 // You can override the setting with the init() in another source code.
 // func init() {
 //    ssid = "your-ssid"
-//    pass = "your-password"
+//    password = "your-password"
 //    debug = true
 //    url = "https://www.example.com"
 //    test_root_ca = "..."
@@ -24,7 +22,7 @@ import (

 var (
 	ssid     string
-	pass  string
+	password string
 	url      string = "https://www.example.com"
 	debug           = false
 )
@@ -59,6 +57,7 @@ var buf [0x1000]byte

 var lastRequestTime time.Time
 var conn net.Conn
+var adaptor *rtl8720dn.RTL8720DN

 func main() {
 	err := run()
@@ -69,19 +68,20 @@ func main() {
 }

 func run() error {
-	adaptor := rtl8720dn.New(machine.UART3, machine.PB24, machine.PC24, machine.RTL8720D_CHIP_PU)
-	adaptor.Debug(debug)
-	adaptor.Configure()
-
-	adaptor.SetRootCA(&test_root_ca)
+	rtl, err := setupRTL8720DN()
+	if err != nil {
+		return err
+	}
+	rtl.SetRootCA(&test_root_ca)
+	net.UseDriver(rtl)
 	http.SetBuf(buf[:])

-	err := adaptor.ConnectToAccessPoint(ssid, pass, 10*time.Second)
+	err = rtl.ConnectToAccessPoint(ssid, password, 10*time.Second)
 	if err != nil {
 		return err
 	}

-	ip, subnet, gateway, err := adaptor.GetIP()
+	ip, subnet, gateway, err := rtl.GetIP()
 	if err != nil {
 		return err
 	}
@@ -0,0 +1,72 @@
+//go:build wioterminal
+// +build wioterminal
+
+package main
+
+import (
+	"device/sam"
+	"machine"
+	"runtime/interrupt"
+	"time"
+
+	"tinygo.org/x/drivers/rtl8720dn"
+)
+
+var (
+	uart UARTx
+)
+
+func handleInterrupt(interrupt.Interrupt) {
+	// should reset IRQ
+	uart.Receive(byte((uart.Bus.DATA.Get() & 0xFF)))
+	uart.Bus.INTFLAG.SetBits(sam.SERCOM_USART_INT_INTFLAG_RXC)
+}
+
+func setupRTL8720DN() (*rtl8720dn.RTL8720DN, error) {
+	machine.RTL8720D_CHIP_PU.Configure(machine.PinConfig{Mode: machine.PinOutput})
+	machine.RTL8720D_CHIP_PU.Low()
+	time.Sleep(100 * time.Millisecond)
+	machine.RTL8720D_CHIP_PU.High()
+	time.Sleep(1000 * time.Millisecond)
+	waitSerial()
+
+	uart = UARTx{
+		UART: &machine.UART{
+			Buffer: machine.NewRingBuffer(),
+			Bus:    sam.SERCOM0_USART_INT,
+			SERCOM: 0,
+		},
+	}
+
+	uart.Interrupt = interrupt.New(sam.IRQ_SERCOM0_2, handleInterrupt)
+	uart.Configure(machine.UARTConfig{TX: machine.PB24, RX: machine.PC24, BaudRate: 614400})
+
+	rtl := rtl8720dn.New(uart)
+	rtl.Debug(debug)
+
+	_, err := rtl.Rpc_tcpip_adapter_init()
+	if err != nil {
+		return nil, err
+	}
+
+	return rtl, nil
+}
+
+// Wait for user to open serial console
+func waitSerial() {
+	for !machine.Serial.DTR() {
+		time.Sleep(100 * time.Millisecond)
+	}
+}
+
+type UARTx struct {
+	*machine.UART
+}
+
+func (u UARTx) Read(p []byte) (n int, err error) {
+	if u.Buffered() == 0 {
+		time.Sleep(1 * time.Millisecond)
+		return 0, nil
+	}
+	return u.UART.Read(p)
+}
@@ -1,29 +1,26 @@
 package main

 import (
-	"machine"
-
 	"fmt"
 	"strconv"
 	"time"

 	"tinygo.org/x/drivers/net"
 	"tinygo.org/x/drivers/net/http"
-	"tinygo.org/x/drivers/rtl8720dn"
 )

 // IP address of the server aka "hub". Replace with your own info.
 // You can override the setting with the init() in another source code.
 // func init() {
 //    ssid = "your-ssid"
-//    pass = "your-password"
+//    password = "your-password"
 //    hubIP = "192.168.1.118"
 //    debug = true
 // }

 var (
 	ssid     string
-	pass  string
+	password string
 	hubIP    = ""
 	debug    = false
 )
@@ -39,18 +36,19 @@ func main() {
 }

 func run() error {
-	adaptor := rtl8720dn.New(machine.UART3, machine.PB24, machine.PC24, machine.RTL8720D_CHIP_PU)
-	adaptor.Debug(debug)
-	adaptor.Configure()
-
+	rtl, err := setupRTL8720DN()
+	if err != nil {
+		return err
+	}
+	net.UseDriver(rtl)
 	http.SetBuf(buf[:])

-	err := adaptor.ConnectToAccessPoint(ssid, pass, 10*time.Second)
+	err = rtl.ConnectToAccessPoint(ssid, password, 10*time.Second)
 	if err != nil {
 		return err
 	}

-	ip, subnet, gateway, err := adaptor.GetIP()
+	ip, subnet, gateway, err := rtl.GetIP()
 	if err != nil {
 		return err
 	}
@@ -0,0 +1,72 @@
+//go:build wioterminal
+// +build wioterminal
+
+package main
+
+import (
+	"device/sam"
+	"machine"
+	"runtime/interrupt"
+	"time"
+
+	"tinygo.org/x/drivers/rtl8720dn"
+)
+
+var (
+	uart UARTx
+)
+
+func handleInterrupt(interrupt.Interrupt) {
+	// should reset IRQ
+	uart.Receive(byte((uart.Bus.DATA.Get() & 0xFF)))
+	uart.Bus.INTFLAG.SetBits(sam.SERCOM_USART_INT_INTFLAG_RXC)
+}
+
+func setupRTL8720DN() (*rtl8720dn.RTL8720DN, error) {
+	machine.RTL8720D_CHIP_PU.Configure(machine.PinConfig{Mode: machine.PinOutput})
+	machine.RTL8720D_CHIP_PU.Low()
+	time.Sleep(100 * time.Millisecond)
+	machine.RTL8720D_CHIP_PU.High()
+	time.Sleep(1000 * time.Millisecond)
+	waitSerial()
+
+	uart = UARTx{
+		UART: &machine.UART{
+			Buffer: machine.NewRingBuffer(),
+			Bus:    sam.SERCOM0_USART_INT,
+			SERCOM: 0,
+		},
+	}
+
+	uart.Interrupt = interrupt.New(sam.IRQ_SERCOM0_2, handleInterrupt)
+	uart.Configure(machine.UARTConfig{TX: machine.PB24, RX: machine.PC24, BaudRate: 614400})
+
+	rtl := rtl8720dn.New(uart)
+	rtl.Debug(debug)
+
+	_, err := rtl.Rpc_tcpip_adapter_init()
+	if err != nil {
+		return nil, err
+	}
+
+	return rtl, nil
+}
+
+// Wait for user to open serial console
+func waitSerial() {
+	for !machine.Serial.DTR() {
+		time.Sleep(100 * time.Millisecond)
+	}
+}
+
+type UARTx struct {
+	*machine.UART
+}
+
+func (u UARTx) Read(p []byte) (n int, err error) {
+	if u.Buffered() == 0 {
+		time.Sleep(1 * time.Millisecond)
+		return 0, nil
+	}
+	return u.UART.Read(p)
+}
@@ -1,12 +1,10 @@
 package main

 import (
-	"machine"
-
 	"fmt"
 	"time"

-	"tinygo.org/x/drivers/rtl8720dn"
+	"tinygo.org/x/drivers/examples/rtl8720dn"
 )

 var (
@@ -22,11 +20,13 @@ func main() {
 }

 func run() error {
-	adaptor := rtl8720dn.New(machine.UART3, machine.PB24, machine.PC24, machine.RTL8720D_CHIP_PU)
-	adaptor.Debug(debug)
-	adaptor.Configure()
+	//rtl8720dn.Debug(true)
+	rtl, err := rtl8720dn.Setup()
+	if err != nil {
+		return err
+	}

-	ver, err := adaptor.Version()
+	ver, err := rtl.Version()
 	if err != nil {
 		return nil
 	}
@@ -1,18 +1,14 @@
 package main

 import (
-	"machine"
-
 	"bufio"
 	"fmt"
 	"image/color"
 	"strings"
 	"time"

-	"tinygo.org/x/drivers/ili9341"
+	"tinygo.org/x/drivers/net"
 	"tinygo.org/x/drivers/net/http"
-	"tinygo.org/x/drivers/rtl8720dn"
-
 	"tinygo.org/x/tinyfont/proggy"
 	"tinygo.org/x/tinyterm"
 )
@@ -21,28 +17,19 @@ import (
 // If debug is enabled, a serial connection is required.
 // func init() {
 //    ssid = "your-ssid"
-//    pass = "your-password"
+//    password = "your-password"
 //    debug = false // true
 //    server = "tinygo.org"
 // }

 var (
 	ssid     string
-	pass  string
+	password string
 	url      = "http://tinygo.org/"
 	debug    = false
 )

 var (
-	display = ili9341.NewSPI(
-		machine.SPI3,
-		machine.LCD_DC,
-		machine.LCD_SS_PIN,
-		machine.LCD_RESET,
-	)
-
-	backlight = machine.LCD_BACKLIGHT
-
 	terminal = tinyterm.NewTerminal(display)

 	black = color.RGBA{0, 0, 0, 255}
@@ -79,22 +66,21 @@ func run() error {
 		fmt.Fprintf(terminal, "Running in debug mode.\r\n")
 		fmt.Fprintf(terminal, "A serial connection is required to continue execution.\r\n")
 	}
-
-	adaptor := rtl8720dn.New(machine.UART3, machine.PB24, machine.PC24, machine.RTL8720D_CHIP_PU)
-	adaptor.Debug(debug)
-	adaptor.Configure()
-
-	http.UseDriver(adaptor)
+	rtl, err := setupRTL8720DN()
+	if err != nil {
+		return err
+	}
+	net.UseDriver(rtl)
 	http.SetBuf(buf[:])

 	fmt.Fprintf(terminal, "ConnectToAP()\r\n")
-	err := adaptor.ConnectToAccessPoint(ssid, pass, 10*time.Second)
+	err = rtl.ConnectToAccessPoint(ssid, password, 10*time.Second)
 	if err != nil {
 		return err
 	}
 	fmt.Fprintf(terminal, "connected\r\n\r\n")

-	ip, subnet, gateway, err := adaptor.GetIP()
+	ip, subnet, gateway, err := rtl.GetIP()
 	if err != nil {
 		return err
 	}
@@ -148,15 +134,3 @@ func run() error {
 		time.Sleep(10 * time.Second)
 	}
 }
-
-func init() {
-	machine.SPI3.Configure(machine.SPIConfig{
-		SCK:       machine.LCD_SCK_PIN,
-		SDO:       machine.LCD_SDO_PIN,
-		SDI:       machine.LCD_SDI_PIN,
-		Frequency: 40000000,
-	})
-	display.Configure(ili9341.Config{})
-
-	backlight.Configure(machine.PinConfig{machine.PinOutput})
-}
@@ -0,0 +1,98 @@
+//go:build wioterminal
+// +build wioterminal
+
+package main
+
+import (
+	"device/sam"
+	"machine"
+	"runtime/interrupt"
+	"time"
+
+	"tinygo.org/x/drivers/ili9341"
+	"tinygo.org/x/drivers/rtl8720dn"
+)
+
+var (
+	uart UARTx
+)
+
+var (
+	display = ili9341.NewSPI(
+		machine.SPI3,
+		machine.LCD_DC,
+		machine.LCD_SS_PIN,
+		machine.LCD_RESET,
+	)
+
+	backlight = machine.LCD_BACKLIGHT
+)
+
+func init() {
+	machine.SPI3.Configure(machine.SPIConfig{
+		SCK:       machine.LCD_SCK_PIN,
+		SDO:       machine.LCD_SDO_PIN,
+		SDI:       machine.LCD_SDI_PIN,
+		Frequency: 40000000,
+	})
+	display.Configure(ili9341.Config{})
+
+	backlight.Configure(machine.PinConfig{machine.PinOutput})
+}
+
+func handleInterrupt(interrupt.Interrupt) {
+	// should reset IRQ
+	uart.Receive(byte((uart.Bus.DATA.Get() & 0xFF)))
+	uart.Bus.INTFLAG.SetBits(sam.SERCOM_USART_INT_INTFLAG_RXC)
+}
+
+func setupRTL8720DN() (*rtl8720dn.RTL8720DN, error) {
+	machine.RTL8720D_CHIP_PU.Configure(machine.PinConfig{Mode: machine.PinOutput})
+	machine.RTL8720D_CHIP_PU.Low()
+	time.Sleep(100 * time.Millisecond)
+	machine.RTL8720D_CHIP_PU.High()
+	time.Sleep(1000 * time.Millisecond)
+	if debug {
+		waitSerial()
+	}
+
+	uart = UARTx{
+		UART: &machine.UART{
+			Buffer: machine.NewRingBuffer(),
+			Bus:    sam.SERCOM0_USART_INT,
+			SERCOM: 0,
+		},
+	}
+
+	uart.Interrupt = interrupt.New(sam.IRQ_SERCOM0_2, handleInterrupt)
+	uart.Configure(machine.UARTConfig{TX: machine.PB24, RX: machine.PC24, BaudRate: 614400})
+
+	rtl := rtl8720dn.New(uart)
+	rtl.Debug(debug)
+
+	_, err := rtl.Rpc_tcpip_adapter_init()
+	if err != nil {
+		return nil, err
+	}
+
+	return rtl, nil
+}
+
+// Wait for user to open serial console
+func waitSerial() {
+	for !machine.Serial.DTR() {
+		time.Sleep(100 * time.Millisecond)
+	}
+}
+
+type UARTx struct {
+	*machine.UART
+}
+
+func (u UARTx) Read(p []byte) (n int, err error) {
+	if u.Buffered() == 0 {
+		time.Sleep(1 * time.Millisecond)
+		return 0, nil
+	}
+	return u.UART.Read(p)
+}
@@ -1,28 +1,26 @@
 package main

 import (
-	"machine"
-
 	"bufio"
 	"fmt"
 	"strings"
 	"time"

+	"tinygo.org/x/drivers/net"
 	"tinygo.org/x/drivers/net/http"
-	"tinygo.org/x/drivers/rtl8720dn"
 )

 // You can override the setting with the init() in another source code.
 // func init() {
 //    ssid = "your-ssid"
-//    pass = "your-password"
+//    password = "your-password"
 //    url = "http://tinygo.org/"
 //    debug = true
 // }

 var (
 	ssid     string
-	pass  string
+	password string
 	url      = "http://tinygo.org/"
 	debug    = false
 )
@@ -38,19 +36,19 @@ func main() {
 }

 func run() error {
-	adaptor := rtl8720dn.New(machine.UART3, machine.PB24, machine.PC24, machine.RTL8720D_CHIP_PU)
-	adaptor.Debug(debug)
-	adaptor.Configure()
-
-	http.UseDriver(adaptor)
+	rtl, err := setupRTL8720DN()
+	if err != nil {
+		return err
+	}
+	net.UseDriver(rtl)
 	http.SetBuf(buf[:])

-	err := adaptor.ConnectToAccessPoint(ssid, pass, 10*time.Second)
+	err = rtl.ConnectToAccessPoint(ssid, password, 10*time.Second)
 	if err != nil {
 		return err
 	}

-	ip, subnet, gateway, err := adaptor.GetIP()
+	ip, subnet, gateway, err := rtl.GetIP()
 	if err != nil {
 		return err
 	}
@@ -0,0 +1,72 @@
+//go:build wioterminal
+// +build wioterminal
+
+package main
+
+import (
+	"device/sam"
+	"machine"
+	"runtime/interrupt"
+	"time"
+
+	"tinygo.org/x/drivers/rtl8720dn"
+)
+
+var (
+	uart UARTx
+)
+
+func handleInterrupt(interrupt.Interrupt) {
+	// should reset IRQ
+	uart.Receive(byte((uart.Bus.DATA.Get() & 0xFF)))
+	uart.Bus.INTFLAG.SetBits(sam.SERCOM_USART_INT_INTFLAG_RXC)
+}
+
+func setupRTL8720DN() (*rtl8720dn.RTL8720DN, error) {
+	machine.RTL8720D_CHIP_PU.Configure(machine.PinConfig{Mode: machine.PinOutput})
+	machine.RTL8720D_CHIP_PU.Low()
+	time.Sleep(100 * time.Millisecond)
+	machine.RTL8720D_CHIP_PU.High()
+	time.Sleep(1000 * time.Millisecond)
+	waitSerial()
+
+	uart = UARTx{
+		UART: &machine.UART{
+			Buffer: machine.NewRingBuffer(),
+			Bus:    sam.SERCOM0_USART_INT,
+			SERCOM: 0,
+		},
+	}
+
+	uart.Interrupt = interrupt.New(sam.IRQ_SERCOM0_2, handleInterrupt)
+	uart.Configure(machine.UARTConfig{TX: machine.PB24, RX: machine.PC24, BaudRate: 614400})
+
+	rtl := rtl8720dn.New(uart)
+	rtl.Debug(debug)
+
+	_, err := rtl.Rpc_tcpip_adapter_init()
+	if err != nil {
+		return nil, err
+	}
+
+	return rtl, nil
+}
+
+// Wait for user to open serial console
+func waitSerial() {
+	for !machine.Serial.DTR() {
+		time.Sleep(100 * time.Millisecond)
+	}
+}
+
+type UARTx struct {
+	*machine.UART
+}
+
+func (u UARTx) Read(p []byte) (n int, err error) {
+	if u.Buffered() == 0 {
+		time.Sleep(1 * time.Millisecond)
+		return 0, nil
+	}
+	return u.UART.Read(p)
+}
@@ -7,19 +7,18 @@ import (
 	"time"

 	"tinygo.org/x/drivers/net/http"
-	"tinygo.org/x/drivers/rtl8720dn"
 )

 // You can override the setting with the init() in another source code.
 // func init() {
 //    ssid = "your-ssid"
-//    pass = "your-password"
+//    password = "your-password"
 //    debug = true
 // }

 var (
 	ssid     string
-	pass  string
+	password string
 	debug    = false
 )

@@ -38,18 +37,18 @@ func main() {
 }

 func run() error {
-	adaptor := rtl8720dn.New(machine.UART3, machine.PB24, machine.PC24, machine.RTL8720D_CHIP_PU)
-	adaptor.Debug(debug)
-	adaptor.Configure()
+	rtl, err := setupRTL8720DN()
+	if err != nil {
+		return err
+	}
+	http.UseDriver(rtl)

-	http.UseDriver(adaptor)
-
-	err := adaptor.ConnectToAccessPoint(ssid, pass, 10*time.Second)
+	err = rtl.ConnectToAccessPoint(ssid, password, 10*time.Second)
 	if err != nil {
 		return err
 	}

-	ip, subnet, gateway, err := adaptor.GetIP()
+	ip, subnet, gateway, err := rtl.GetIP()
 	if err != nil {
 		return err
 	}
@@ -0,0 +1,74 @@
+//go:build wioterminal
+// +build wioterminal
+
+package main
+
+import (
+	"device/sam"
+	"machine"
+	"runtime/interrupt"
+	"time"
+
+	"tinygo.org/x/drivers/rtl8720dn"
+)
+
+var (
+	uart UARTx
+)
+
+func handleInterrupt(interrupt.Interrupt) {
+	// should reset IRQ
+	uart.Receive(byte((uart.Bus.DATA.Get() & 0xFF)))
+	uart.Bus.INTFLAG.SetBits(sam.SERCOM_USART_INT_INTFLAG_RXC)
+}
+
+func setupRTL8720DN() (*rtl8720dn.RTL8720DN, error) {
+	machine.RTL8720D_CHIP_PU.Configure(machine.PinConfig{Mode: machine.PinOutput})
+	machine.RTL8720D_CHIP_PU.Low()
+	time.Sleep(100 * time.Millisecond)
+	machine.RTL8720D_CHIP_PU.High()
+	time.Sleep(1000 * time.Millisecond)
+	if debug {
+		waitSerial()
+	}
+
+	uart = UARTx{
+		UART: &machine.UART{
+			Buffer: machine.NewRingBuffer(),
+			Bus:    sam.SERCOM0_USART_INT,
+			SERCOM: 0,
+		},
+	}
+
+	uart.Interrupt = interrupt.New(sam.IRQ_SERCOM0_2, handleInterrupt)
+	uart.Configure(machine.UARTConfig{TX: machine.PB24, RX: machine.PC24, BaudRate: 614400})
+
+	rtl := rtl8720dn.New(uart)
+	rtl.Debug(debug)
+
+	_, err := rtl.Rpc_tcpip_adapter_init()
+	if err != nil {
+		return nil, err
+	}
+
+	return rtl, nil
+}
+
+// Wait for user to open serial console
+func waitSerial() {
+	for !machine.Serial.DTR() {
+		time.Sleep(100 * time.Millisecond)
+	}
+}
+
+type UARTx struct {
+	*machine.UART
+}
+
+func (u UARTx) Read(p []byte) (n int, err error) {
+	if u.Buffered() == 0 {
+		time.Sleep(1 * time.Millisecond)
+		return 0, nil
+	}
+	return u.UART.Read(p)
+}
@@ -0,0 +1,79 @@
+//go:build wioterminal
+// +build wioterminal
+
+package rtl8720dn
+
+import (
+	"device/sam"
+	"machine"
+	"runtime/interrupt"
+	"time"
+
+	"tinygo.org/x/drivers/rtl8720dn"
+)
+
+var (
+	uart  UARTx
+	debug bool
+)
+
+func handleInterrupt(interrupt.Interrupt) {
+	// should reset IRQ
+	uart.Receive(byte((uart.Bus.DATA.Get() & 0xFF)))
+	uart.Bus.INTFLAG.SetBits(sam.SERCOM_USART_INT_INTFLAG_RXC)
+}
+
+func Setup() (*rtl8720dn.RTL8720DN, error) {
+	machine.RTL8720D_CHIP_PU.Configure(machine.PinConfig{Mode: machine.PinOutput})
+	machine.RTL8720D_CHIP_PU.Low()
+	time.Sleep(100 * time.Millisecond)
+	machine.RTL8720D_CHIP_PU.High()
+	time.Sleep(1000 * time.Millisecond)
+	if debug {
+		waitSerial()
+	}
+
+	uart = UARTx{
+		UART: &machine.UART{
+			Buffer: machine.NewRingBuffer(),
+			Bus:    sam.SERCOM0_USART_INT,
+			SERCOM: 0,
+		},
+	}
+
+	uart.Interrupt = interrupt.New(sam.IRQ_SERCOM0_2, handleInterrupt)
+	uart.Configure(machine.UARTConfig{TX: machine.PB24, RX: machine.PC24, BaudRate: 614400})
+
+	rtl := rtl8720dn.New(uart)
+	rtl.Debug(debug)
+
+	_, err := rtl.Rpc_tcpip_adapter_init_with_timeout(10 * time.Second)
+	if err != nil {
+		return nil, err
+	}
+
+	return rtl, nil
+}
+
+// Wait for user to open serial console
+func waitSerial() {
+	for !machine.Serial.DTR() {
+		time.Sleep(100 * time.Millisecond)
+	}
+}
+
+type UARTx struct {
+	*machine.UART
+}
+
+func (u UARTx) Read(p []byte) (n int, err error) {
+	if u.Buffered() == 0 {
+		time.Sleep(1 * time.Millisecond)
+		return 0, nil
+	}
+	return u.UART.Read(p)
+}
+
+func Debug(b bool) {
+	debug = b
+}
@@ -2,13 +2,13 @@
 // +build gnse

 /*
-Generic Node Sensor Edition
-RFSwitch
+ Generic Node Sensor Edition
+ RFSwitch

-Disable Switch   :  PB8=OFF PA0=OFF  PA1=OFF
-Enable RX        :  PB8=ON  PA0=ON   PA1=OFF
-Enable TX RFO LP :  PB8=ON  PA0=ON   PA1=ON
-Enable TX RFO HP :  PB8=ON  PA0=OFF  PA1=ON
+ Disable Switch   :  PB8=OFF PA0=OFF  PA1=OFF
+ Enable RX        :  PB8=ON  PA0=ON   PA1=OFF
+ Enable TX RFO LP :  PB8=ON  PA0=ON   PA1=ON
+ Enable TX RFO HP :  PB8=ON  PA0=OFF  PA1=ON
 */
 package rfswitch

@@ -1,34 +0,0 @@
-package main
-
-import (
-	"machine"
-
-	"tinygo.org/x/drivers/vl6180x"
-
-	"time"
-)
-
-func main() {
-	time.Sleep(3 * time.Second)
-	machine.I2C0.Configure(machine.I2CConfig{
-		Frequency: 400000,
-	})
-	sensor := vl6180x.New(machine.I2C0)
-	connected := sensor.Connected()
-	if !connected {
-		println("VL6180X device not found")
-		return
-	}
-	println("VL6180X device found")
-	sensor.Configure(true)
-	var value uint16
-	var status uint8
-	for {
-		value = sensor.Read()
-		status = sensor.ReadStatus()
-		println("Distance (mm):", value)
-		println("Status:", status)
-		println("---")
-		time.Sleep(100 * time.Millisecond)
-	}
-}
@@ -1,84 +0,0 @@
-package main
-
-import (
-	"machine"
-
-	"image/color"
-
-	"time"
-
-	"tinygo.org/x/drivers/waveshare-epd/epd2in9"
-)
-
-var display epd2in9.Device
-
-const (
-	width  = 128
-	height = 296
-)
-
-func main() {
-	machine.SPI0.Configure(machine.SPIConfig{
-		Frequency: 8000000,
-		Mode:      0,
-	})
-
-	display = epd2in9.New(machine.SPI0, machine.GPIO2, machine.GPIO3, machine.GPIO4, machine.GPIO5)
-	display.Configure(epd2in9.Config{
-		Width:        width,
-		LogicalWidth: width,
-		Height:       height,
-	})
-
-	black := color.RGBA{1, 1, 1, 255}
-	white := color.RGBA{0, 0, 0, 255}
-
-	display.ClearBuffer()
-	println("Clear the display")
-	display.ClearDisplay()
-	display.WaitUntilIdle()
-	println("Waiting for 2 seconds")
-	time.Sleep(2 * time.Second)
-
-	// Show a checkered board
-	for i := int16(0); i < width/8; i++ {
-		for j := int16(0); j < height/8; j++ {
-			if (i+j)%2 == 0 {
-				showRect(i*8, j*8, 8, 8, black)
-			}
-		}
-	}
-	println("Show checkered board")
-	display.Display()
-	display.WaitUntilIdle()
-	println("Waiting for 2 seconds")
-	time.Sleep(2 * time.Second)
-
-	println("Set partial lut")
-	display.SetLUT(false) // partial updates (faster, but with some ghosting)
-	println("Show smaller striped area")
-	for i := int16(40); i < 88; i++ {
-		for j := int16(83); j < 166; j++ {
-			if (i+j)%4 == 0 || (i+j)%4 == 1 {
-				display.SetPixel(i, j, black)
-			} else {
-				display.SetPixel(i, j, white)
-			}
-		}
-	}
-
-	display.Display()
-	display.WaitUntilIdle()
-
-	display.DeepSleep()
-
-	println("You could remove power now")
-}
-
-func showRect(x int16, y int16, w int16, h int16, c color.RGBA) {
-	for i := x; i < x+w; i++ {
-		for j := y; j < y+h; j++ {
-			display.SetPixel(i, j, c)
-		}
-	}
-}
@@ -4,6 +4,7 @@
 // You can open a server to accept connections from this program using:
 //
 // nc -w 5 -lk 8080
+//
 package main

 import (
@@ -14,11 +15,9 @@ import (
 	"tinygo.org/x/drivers/net"
 )

-var (
-	// access point info
-	ssid string
-	pass string
-)
+// access point info
+const ssid = ""
+const pass = ""

 // IP address of the server aka "hub". Replace with your own info.
 const serverIP = ""
@@ -9,11 +9,9 @@ import (
 	"tinygo.org/x/drivers/wifinina"
 )

-var (
-	// access point info
-	ssid string
-	pass string
-)
+// access point info
+const ssid = ""
+const pass = ""

 // these are the default pins for the Arduino Nano33 IoT.
 // change these to connect to a different UART or pins for the ESP8266/ESP32
@@ -9,6 +9,7 @@
 //
 // examples/wifinina/webclient
 // examples/wifinina/tlsclient
+//
 package main

 import (
@@ -23,11 +24,9 @@ import (
 	"tinygo.org/x/drivers/wifinina"
 )

-var (
-	// access point info
-	ssid string
-	pass string
-)
+// access point info
+const ssid = ""
+const pass = ""

 // IP address of the server aka "hub". Replace with your own info.
 // Can specify a URL starting with http or https
@@ -8,6 +8,7 @@
 // You must install the Paho MQTT package to build this program:
 //
 // 		go get -u github.com/eclipse/paho.mqtt.golang
+//
 package main

 import (
@@ -20,11 +21,9 @@ import (
 	"tinygo.org/x/drivers/wifinina"
 )

-var (
-	// access point info
-	ssid string
-	pass string
-)
+// access point info
+const ssid = ""
+const pass = ""

 // IP address of the MQTT broker to use. Replace with your own info.
 const server = "tcp://test.mosquitto.org:1883"
@@ -8,6 +8,7 @@
 // You must also install the Paho MQTT package to build this program:
 //
 // 		go get -u github.com/eclipse/paho.mqtt.golang
+//
 package main

 import (
@@ -20,11 +21,9 @@ import (
 	"tinygo.org/x/drivers/wifinina"
 )

-var (
-	// access point info
-	ssid string
-	pass string
-)
+// access point info
+const ssid = ""
+const pass = ""

 // IP address of the MQTT broker to use. Replace with your own info.
 const server = "tcp://test.mosquitto.org:1883"
@@ -14,11 +14,9 @@ import (
 	"tinygo.org/x/drivers/wifinina"
 )

-var (
-	// access point info
-	ssid string
-	pass string
-)
+// access point info
+const ssid = ""
+const pass = ""

 // IP address of the server aka "hub". Replace with your own info.
 const ntpHost = "129.6.15.29"
@@ -4,6 +4,7 @@
 // You can open a server to accept connections from this program using:
 //
 // nc -w 5 -lk 8080
+//
 package main

 import (
@@ -16,11 +17,9 @@ import (
 	"tinygo.org/x/drivers/wifinina"
 )

-var (
-	// access point info
-	ssid string
-	pass string
-)
+// access point info
+const ssid = ""
+const pass = ""

 // IP address of the server aka "hub". Replace with your own info.
 const serverIP = ""
@@ -4,6 +4,7 @@
 // You shall see "strict-transport-security" header in the response,
 // this confirms communication is indeed over HTTPS
 // https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Strict-Transport-Security
+//
 package main

 import (
@@ -17,11 +18,9 @@ import (
 	"tinygo.org/x/drivers/wifinina"
 )

-var (
-	// access point info
-	ssid string
-	pass string
-)
+// access point info
+const ssid = ""
+const pass = ""

 // IP address of the server aka "hub". Replace with your own info.
 const server = "tinygo.org"
@@ -3,6 +3,7 @@
 //
 // In other words:
 // Your computer <--> UART0 <--> MCU <--> SPI <--> ESP32
+//
 package main

 import (
@@ -14,11 +15,9 @@ import (
 	"tinygo.org/x/drivers/wifinina"
 )

-var (
-	// access point info
-	ssid string
-	pass string
-)
+// access point info
+const ssid = ""
+const pass = ""

 // IP address of the server aka "hub". Replace with your own info.
 const hubIP = ""
@@ -3,6 +3,7 @@
 // Arduino example:
 //
 // https://github.com/arduino-libraries/WiFiNINA/blob/master/examples/WiFiWebClientRepeating/
+//
 package main

 import (
@@ -14,11 +15,9 @@ import (
 	"tinygo.org/x/drivers/wifinina"
 )

-var (
-	// access point info
-	ssid string
-	pass string
-)
+// access point info
+const ssid = ""
+const pass = ""

 // IP address of the server aka "hub". Replace with your own info.
 const server = "tinygo.org"
@@ -2,6 +2,7 @@
 // panel controller.
 //
 // Datasheet: https://focuslcds.com/content/FT6236.pdf
+//
 package ft6336

 import (
@@ -41,7 +42,6 @@ func (d *Device) Configure(config Config) error {
 }

 // SetGMode sets interrupt mode.
-//
 //  0x00 : Interrupt Polling mode
 //  0x01 : Interrupt Trigger mode (default)
 func (d *Device) SetGMode(v uint8) {
@@ -1,567 +0,0 @@
-// Package gc9a01 implements a driver for the gc9a01 LCD round display
-//
-// Datasheet: https://www.waveshare.com/w/upload/5/5e/GC9A01A.pdf
-package gc9a01 // import "tinygo.org/x/drivers/gc9a01"
-
-import (
-	"image/color"
-	"machine"
-	"time"
-
-	"errors"
-
-	"tinygo.org/x/drivers"
-)
-
-// Rotation controls the rotation used by the display.
-type Orientation uint8
-
-// FrameRate controls the frame rate used by the display.
-type FrameRate uint8
-
-// Device wraps an SPI connection.
-type Device struct {
-	bus             drivers.SPI
-	dcPin           machine.Pin
-	resetPin        machine.Pin
-	csPin           machine.Pin
-	blPin           machine.Pin
-	width           int16
-	height          int16
-	columnOffsetCfg int16
-	rowOffsetCfg    int16
-	columnOffset    int16
-	rowOffset       int16
-	frameRate       FrameRate
-	isBGR           bool
-	vSyncLines      int16
-	orientation     Orientation
-	batchLength     int16
-	batchData       []uint8
-}
-
-// Config is the configuration for the display
-type Config struct {
-	Orientation  Orientation
-	RowOffset    int16
-	ColumnOffset int16
-	FrameRate    FrameRate
-	VSyncLines   int16
-	Width        int16
-	Height       int16
-}
-
-// New creates a new ST7789 connection. The SPI wire must already be configured.
-func New(bus drivers.SPI, resetPin, dcPin, csPin, blPin machine.Pin) Device {
-	resetPin.Configure(machine.PinConfig{Mode: machine.PinOutput})
-	dcPin.Configure(machine.PinConfig{Mode: machine.PinOutput})
-	csPin.Configure(machine.PinConfig{Mode: machine.PinOutput})
-	blPin.Configure(machine.PinConfig{Mode: machine.PinOutput})
-	return Device{
-		bus:      bus,
-		resetPin: resetPin,
-		dcPin:    dcPin,
-		csPin:    csPin,
-		blPin:    blPin,
-	}
-}
-
-// Reset the Device
-func (d *Device) Reset() {
-	d.resetPin.High()
-	time.Sleep(100 * time.Millisecond)
-	d.resetPin.Low()
-	time.Sleep(100 * time.Millisecond)
-	d.resetPin.High()
-	time.Sleep(100 * time.Millisecond)
-
-}
-
-// Sets Device configuration for screen orientation using the initialzation values
-func (d *Device) SetDeviceOrientation() {
-
-	var MemoryAccessReg uint8
-
-	//Get GRAM and LCD width and height
-	if d.orientation == HORIZONTAL {
-		MemoryAccessReg = 0xc8
-	} else {
-		MemoryAccessReg = 0x68
-	}
-
-	// Set the read / write scan direction of the frame memory
-	d.Command(MADCTR)
-	//0x08 set RGB
-	d.Command(MemoryAccessReg)
-}
-
-// setWindow prepares the screen to be modified at a given rectangle
-func (d *Device) setWindow(x, y, w, h int16) {
-	if d.orientation == HORIZONTAL {
-		x += d.columnOffset
-		y += d.rowOffset
-	} else {
-		x += d.rowOffset
-		y += d.columnOffset
-	}
-	d.Tx([]uint8{CASET}, true)
-	d.Tx([]uint8{uint8(x >> 8), uint8(x), uint8((x + w - 1) >> 8), uint8(x + w - 1)}, false)
-	d.Tx([]uint8{RASET}, true)
-	d.Tx([]uint8{uint8(y >> 8), uint8(y), uint8((y + h - 1) >> 8), uint8(y + h - 1)}, false)
-	d.Command(RAMWR)
-}
-
-// FillScreen fills the screen with a given color
-func (d *Device) FillScreen(c color.RGBA) {
-	d.FillRectangle(0, 0, d.height, d.width, c)
-}
-
-// FillRectangle fills a rectangle at a given coordinates with a color
-func (d *Device) FillRectangle(x, y, width, height int16, c color.RGBA) error {
-	k, j := d.Size()
-	var i int32
-	if x < 0 || y < 0 || width <= 0 || height <= 0 ||
-		x >= k || (x+width) > k || y >= j || (y+height) > j {
-		return errors.New("rectangle coordinates outside display area")
-	}
-	d.setWindow(x, y, width, height)
-	c565 := RGBATo565(c)
-	c1 := uint8(c565 >> 8)
-	c2 := uint8(c565)
-
-	for i = 0; i < int32(d.batchLength); i++ {
-		d.batchData[i*2] = c1
-		d.batchData[i*2+1] = c2
-	}
-	i = int32(width) * int32(height)
-	batchLength := int32(d.batchLength)
-	for i > 0 {
-		if i >= batchLength {
-			d.Tx(d.batchData, false)
-		} else {
-			d.Tx(d.batchData[:i*2], false)
-		}
-		i -= batchLength
-	}
-	return nil
-}
-
-// Display sends the whole buffer to the screen
-func (d *Device) Display() error {
-	return nil
-}
-
-// FillRectangleWithBuffer fills buffer with a rectangle at a given coordinates.
-func (d *Device) FillRectangleWithBuffer(x, y, width, height int16, buffer []color.RGBA) error {
-	h, w := d.Size()
-	if x < 0 || y < 0 || width <= 0 || height <= 0 ||
-		x >= h || (x+width) > h || y >= w || (y+height) > w {
-		return errors.New("rectangle coordinates outside display area")
-	}
-	k := int32(width) * int32(height)
-	l := int32(len(buffer))
-	if k != l {
-		return errors.New("buffer length does not match with rectangle size")
-	}
-
-	d.setWindow(x, y, width, height)
-
-	offset := int32(0)
-	batchLength := int32(d.batchLength)
-	for k > 0 {
-		for i := int32(0); i < batchLength; i++ {
-			if offset+i < l {
-				c565 := RGBATo565(buffer[offset+i])
-				c1 := uint8(c565 >> 8)
-				c2 := uint8(c565)
-				d.batchData[i*2] = c1
-				d.batchData[i*2+1] = c2
-			}
-		}
-		if k >= batchLength {
-			d.Tx(d.batchData, false)
-		} else {
-			d.Tx(d.batchData[:k*2], false)
-		}
-		k -= batchLength
-		offset += batchLength
-	}
-	return nil
-}
-
-// DrawFastVLine draws a vertical line faster than using SetPixel
-func (d *Device) DrawFastVLine(x, y0, y1 int16, c color.RGBA) {
-	if y0 > y1 {
-		y0, y1 = y1, y0
-	}
-	d.FillRectangle(x, y0, 1, y1-y0+1, c)
-}
-
-// DrawFastHLine draws a horizontal line faster than using SetPixel
-func (d *Device) DrawFastHLine(x0, x1, y int16, c color.RGBA) {
-	if x0 > x1 {
-		x0, x1 = x1, x0
-	}
-	d.FillRectangle(x0, y, x1-x0+1, 1, c)
-}
-
-// SetPixel sets a pixel in the screen
-func (d *Device) SetPixel(x, y int16, c color.RGBA) {
-	w, h := d.Size()
-	if x < 0 || y < 0 || x >= w || y >= h {
-		return
-	}
-	d.FillRectangle(x, y, 1, 1, c)
-}
-
-// Command sends a command to the display.
-func (d *Device) Command(command uint8) {
-	d.Tx([]byte{command}, true)
-}
-
-// Data sends data to the display.
-func (d *Device) Data(data uint8) {
-	d.Tx([]byte{data}, false)
-}
-
-// Tx sends data to the display
-func (d *Device) Tx(data []byte, isCommand bool) {
-	d.dcPin.Set(!isCommand)
-	d.bus.Tx(data, nil)
-}
-
-// Rx reads data from the display
-func (d *Device) Rx(command uint8, data []byte) {
-	d.dcPin.Low()
-	d.csPin.Low()
-	d.bus.Transfer(command)
-	d.dcPin.High()
-	for i := range data {
-		data[i], _ = d.bus.Transfer(0xFF)
-	}
-	d.csPin.High()
-}
-
-// Size returns the current size of the display.
-func (d *Device) Size() (w, h int16) {
-	return d.height, d.width
-}
-
-// EnableBacklight enables or disables the backlight
-func (d *Device) EnableBacklight(enable bool) {
-	if enable {
-		d.blPin.High()
-	} else {
-		d.blPin.Low()
-	}
-}
-
-// InvertColors inverts the colors of the screen
-func (d *Device) InvertColors(invert bool) {
-	if invert {
-		d.Command(INVON)
-	} else {
-		d.Command(INVOFF)
-	}
-}
-
-// IsBGR changes the color mode (RGB/BGR)
-func (d *Device) IsBGR(bgr bool) {
-	d.isBGR = bgr
-}
-
-// SetScrollArea sets an area to scroll with fixed top and bottom parts of the display.
-func (d *Device) SetScrollArea(topFixedArea, bottomFixedArea int16) {
-	d.Command(VSCRDEF)
-	d.Tx([]uint8{
-		uint8(topFixedArea >> 8), uint8(topFixedArea),
-		uint8(d.height - topFixedArea - bottomFixedArea>>8), uint8(d.height - topFixedArea - bottomFixedArea),
-		uint8(bottomFixedArea >> 8), uint8(bottomFixedArea)},
-		false)
-}
-
-// SetScroll sets the vertical scroll address of the display.
-func (d *Device) SetScroll(line int16) {
-	d.Command(VSCRSADD)
-	d.Tx([]uint8{uint8(line >> 8), uint8(line)}, false)
-}
-
-// StopScroll returns the display to its normal state.
-func (d *Device) StopScroll() {
-	d.Command(NORON)
-}
-
-// RGBATo565 converts a color.RGBA to uint16 used in the display
-func RGBATo565(c color.RGBA) uint16 {
-	r, g, b, _ := c.RGBA()
-	return uint16((r & 0xF800) +
-		((g & 0xFC00) >> 5) +
-		((b & 0xF800) >> 11))
-}
-
-// Configure initializes the display with default configuration
-func (d *Device) Configure(cfg Config) {
-	if cfg.Width != 0 {
-		d.width = cfg.Width
-	} else {
-		d.width = 240
-	}
-	if cfg.Height != 0 {
-		d.height = cfg.Height
-	} else {
-		d.height = 240
-	}
-
-	d.orientation = cfg.Orientation
-	d.rowOffsetCfg = cfg.RowOffset
-	d.columnOffsetCfg = cfg.ColumnOffset
-	d.batchLength = d.width
-
-	if cfg.VSyncLines >= 2 && cfg.VSyncLines <= 254 {
-		d.vSyncLines = cfg.VSyncLines
-	} else {
-		d.vSyncLines = 16
-	}
-	d.batchLength += d.batchLength & 1
-	d.batchData = make([]uint8, d.batchLength*2)
-
-	// Reset the device
-	d.Reset()
-
-	// Set Device Attributes
-	d.SetDeviceOrientation()
-
-	// Common initialization
-	d.Command(0xEF)
-	d.Command(0xEB)
-	d.Data(0x14)
-
-	d.Command(INTEN1)
-	d.Command(0xEF)
-
-	d.Command(0xEB)
-	d.Data(0x14)
-
-	d.Command(0x84)
-	d.Data(0x40)
-
-	d.Command(0x85)
-	d.Data(0xFF)
-
-	d.Command(0x86)
-	d.Data(0xFF)
-
-	d.Command(0x87)
-	d.Data(0xFF)
-
-	d.Command(0x88)
-	d.Data(0x0A)
-
-	d.Command(0x89)
-	d.Data(0x21)
-
-	d.Command(0x8A)
-	d.Data(0x00)
-
-	d.Command(0x8B)
-	d.Data(0x80)
-
-	d.Command(0x8C)
-	d.Data(0x01)
-
-	d.Command(0x8D)
-	d.Data(0x01)
-
-	d.Command(0x8E)
-	d.Data(0xFF)
-
-	d.Command(0x8F)
-	d.Data(0xFF)
-
-	d.Command(DISFNCTL)
-	d.Data(0x00)
-	d.Data(0x20)
-
-	d.Command(MADCTR)
-	d.Data(0x08) //Set as vertical screen
-
-	d.Command(COLMOD)
-	d.Data(0x05)
-
-	d.Command(0x90)
-	d.Data(0x08)
-	d.Data(0x08)
-	d.Data(0x08)
-	d.Data(0x08)
-
-	d.Command(0xBD)
-	d.Data(0x06)
-
-	d.Command(0xBC)
-	d.Data(0x00)
-
-	d.Command(0xFF)
-	d.Data(0x60)
-	d.Data(0x01)
-	d.Data(0x04)
-
-	d.Command(PWCTR3)
-	d.Data(0x13)
-	d.Command(PWCTR4)
-	d.Data(0x13)
-
-	d.Command(0xC9)
-	d.Data(0x22)
-
-	d.Command(0xBE)
-	d.Data(0x11)
-
-	d.Command(0xE1)
-	d.Data(0x10)
-	d.Data(0x0E)
-
-	d.Command(0xDF)
-	d.Data(0x21)
-	d.Data(0x0c)
-	d.Data(0x02)
-
-	d.Command(GMSET1)
-	d.Data(0x45)
-	d.Data(0x09)
-	d.Data(0x08)
-	d.Data(0x08)
-	d.Data(0x26)
-	d.Data(0x2A)
-
-	d.Command(GMSET2)
-	d.Data(0x43)
-	d.Data(0x70)
-	d.Data(0x72)
-	d.Data(0x36)
-	d.Data(0x37)
-	d.Data(0x6F)
-
-	d.Command(GMSET3)
-	d.Data(0x45)
-	d.Data(0x09)
-	d.Data(0x08)
-	d.Data(0x08)
-	d.Data(0x26)
-	d.Data(0x2A)
-
-	d.Command(GMSET4)
-	d.Data(0x43)
-	d.Data(0x70)
-	d.Data(0x72)
-	d.Data(0x36)
-	d.Data(0x37)
-	d.Data(0x6F)
-
-	d.Command(0xED)
-	d.Data(0x1B)
-	d.Data(0x0B)
-
-	d.Command(0xAE)
-	d.Data(0x77)
-
-	d.Command(0xCD)
-	d.Data(0x63)
-
-	d.Command(0x70)
-	d.Data(0x07)
-	d.Data(0x07)
-	d.Data(0x04)
-	d.Data(0x0E)
-	d.Data(0x0F)
-	d.Data(0x09)
-	d.Data(0x07)
-	d.Data(0x08)
-	d.Data(0x03)
-
-	d.Command(FRMCTL)
-	d.Data(0x34)
-
-	d.Command(0x62)
-	d.Data(0x18)
-	d.Data(0x0D)
-	d.Data(0x71)
-	d.Data(0xED)
-	d.Data(0x70)
-	d.Data(0x70)
-	d.Data(0x18)
-	d.Data(0x0F)
-	d.Data(0x71)
-	d.Data(0xEF)
-	d.Data(0x70)
-	d.Data(0x70)
-
-	d.Command(0x63)
-	d.Data(0x18)
-	d.Data(0x11)
-	d.Data(0x71)
-	d.Data(0xF1)
-	d.Data(0x70)
-	d.Data(0x70)
-	d.Data(0x18)
-	d.Data(0x13)
-	d.Data(0x71)
-	d.Data(0xF3)
-	d.Data(0x70)
-	d.Data(0x70)
-
-	d.Command(0x64)
-	d.Data(0x28)
-	d.Data(0x29)
-	d.Data(0xF1)
-	d.Data(0x01)
-	d.Data(0xF1)
-	d.Data(0x00)
-	d.Data(0x07)
-
-	d.Command(0x66)
-	d.Data(0x3C)
-	d.Data(0x00)
-	d.Data(0xCD)
-	d.Data(0x67)
-	d.Data(0x45)
-	d.Data(0x45)
-	d.Data(0x10)
-	d.Data(0x00)
-	d.Data(0x00)
-	d.Data(0x00)
-
-	d.Command(0x67)
-	d.Data(0x00)
-	d.Data(0x3C)
-	d.Data(0x00)
-	d.Data(0x00)
-	d.Data(0x00)
-	d.Data(0x01)
-	d.Data(0x54)
-	d.Data(0x10)
-	d.Data(0x32)
-	d.Data(0x98)
-
-	d.Command(0x74)
-	d.Data(0x10)
-	d.Data(0x85)
-	d.Data(0x80)
-	d.Data(0x00)
-	d.Data(0x00)
-	d.Data(0x4E)
-	d.Data(0x00)
-
-	d.Command(0x98)
-	d.Data(0x3e)
-	d.Data(0x07)
-
-	d.Command(TEON)
-	d.Command(0x21)
-
-	d.Command(SLPOUT)
-	time.Sleep(120 * time.Millisecond)
-	d.Command(DISPON)
-	time.Sleep(20 * time.Millisecond)
-
-	d.blPin.High()
-}
@@ -1,65 +0,0 @@
-package gc9a01
-
-// Registers
-const (
-	NOP        = 0x00
-	SWRESET    = 0x01
-	RDDIDIF    = 0x04
-	RDDST      = 0x09
-	SLPIN      = 0x10
-	SLPOUT     = 0x11
-	PTLON      = 0x12
-	NORON      = 0x13
-	INVOFF     = 0x20
-	INVON      = 0x21
-	DISPOFF    = 0x28
-	DISPON     = 0x29
-	CASET      = 0x2A
-	RASET      = 0x2B
-	RAMWR      = 0x2C
-	PTLAR      = 0x30
-	VSCRDEF    = 0x33
-	TEOFF      = 0x34
-	TEON       = 0x35
-	MADCTR     = 0x36
-	VSCRSADD   = 0x37
-	IDMOFF     = 0x38
-	IDMON      = 0x39
-	COLMOD     = 0x3A
-	RMEMCON    = 0x3C
-	STTRSCL    = 0x44
-	GTSCL      = 0x45
-	WRDISBV    = 0x51
-	WRCTRLD    = 0x51
-	MADCTL_MY  = 0x80
-	MADCTL_MX  = 0x40
-	MADCTL_MV  = 0x20
-	MADCTL_ML  = 0x10
-	MADCTL_RGB = 0x00
-	MADCTL_BGR = 0x08
-	MADCTL_MH  = 0x04
-	RDID1      = 0xDA
-	RDID2      = 0xDB
-	RDID3      = 0xDC
-	RGBICTR    = 0xB0
-	BLPCHCTRL  = 0xB5
-	DISFNCTL   = 0xB6
-	TECTL      = 0xBA
-	INTCTL     = 0xBA
-	FRMCTL     = 0xE8
-	SPICTL     = 0xE9
-	PWCTR1     = 0xC1
-	PWCTR2     = 0xC2
-	PWCTR3     = 0xC3
-	PWCTR4     = 0xC4
-	PWCTR7     = 0xC7
-	INTEN1     = 0xFE
-	INTEN2     = 0xEF
-	GMSET1     = 0xF0
-	GMSET2     = 0xF1
-	GMSET3     = 0xF2
-	GMSET4     = 0xF3
-
-	HORIZONTAL Orientation = 0
-	VERTICAL   Orientation = 1
-)
@@ -1,6 +1,7 @@
 // Package hd44780 provides a driver for the HD44780 LCD controller.
 //
 // Datasheet: https://www.sparkfun.com/datasheets/LCD/HD44780.pdf
+//
 package hd44780 // import "tinygo.org/x/drivers/hd44780"

 import (
@@ -2,6 +2,7 @@
 // with an I2C adapter.
 //
 // Datasheet: https://www.sparkfun.com/datasheets/LCD/HD44780.pdf
+//
 package hd44780i2c

 import (
@@ -2,6 +2,7 @@
 // a capacitive digital sensor for relative humidity and temperature.
 //
 // Datasheet: https://www.st.com/resource/en/datasheet/hts221.pdf
+//
 package hts221

 import (
@@ -84,6 +85,7 @@ func (d *Device) ReadTemperature() (temperature int32, err error) {
 // Resolution sets the HTS221's resolution mode.
 // The higher resolutions are more accurate but comsume more power (see datasheet).
 // The number of averaged samples will be (h + 2) ^ 2, (t + 1) ^ 2
+//
 func (d *Device) Resolution(h uint8, t uint8) {
 	if h > 7 {
 		h = 3 // default
@@ -2,6 +2,7 @@
 //
 // Guide: https://cdn-learn.adafruit.com/downloads/pdf/32x16-32x32-rgb-led-matrix.pdf
 // This driver was inspired by https://github.com/2dom/PxMatrix
+//
 package hub75 // import "tinygo.org/x/drivers/hub75"

 import (
@@ -7,13 +7,13 @@ package flate
 // dictDecoder implements the LZ77 sliding dictionary as used in decompression.
 // LZ77 decompresses data through sequences of two forms of commands:
 //
-//   - Literal insertions: Runs of one or more symbols are inserted into the data
+//	* Literal insertions: Runs of one or more symbols are inserted into the data
 //	stream as is. This is accomplished through the writeByte method for a
 //	single symbol, or combinations of writeSlice/writeMark for multiple symbols.
 //	Any valid stream must start with a literal insertion if no preset dictionary
 //	is used.
 //
-//   - Backward copies: Runs of one or more symbols are copied from previously
+//	* Backward copies: Runs of one or more symbols are copied from previously
 //	emitted data. Backward copies come as the tuple (dist, length) where dist
 //	determines how far back in the stream to copy from and length determines how
 //	many bytes to copy. Note that it is valid for the length to be greater than
@@ -124,17 +124,12 @@ const maxBitsLimit = 16
 // The cases of 0, 1, and 2 literals are handled by special case code.
 //
 // list  An array of the literals with non-zero frequencies
-//
 //             and their associated frequencies. The array is in order of increasing
 //             frequency, and has as its last element a special element with frequency
 //             MaxInt32
-//
 // maxBits     The maximum number of bits that should be used to encode any literal.
-//
 //             Must be less than 16.
-//
 // return      An integer array in which array[i] indicates the number of literals
-//
 //             that should be encoded in i bits.
 func (h *huffmanEncoder) bitCounts(list []literalNode, maxBits int32) []int32 {
 	if maxBits >= maxBitsLimit {
@@ -326,9 +326,7 @@ func (d *decoder) parsetRNS(length uint32) error {

 // Read presents one or more IDAT chunks as one continuous stream (minus the
 // intermediate chunk headers and footers). If the PNG data looked like:
-//
 //   ... len0 IDAT xxx crc0 len1 IDAT yy crc1 len2 IEND crc2
-//
 // then this reader presents xxxyy. For well-formed PNG data, the decoder state
 // immediately before the first Read call is that d.r is positioned between the
 // first IDAT and xxx, and the decoder state immediately after the last Read
@@ -43,6 +43,7 @@ func New(bus drivers.I2C) Device {
 // * VoltConvTime = CONVTIME_1100USEC
 // * CurrentConvTime = CONVTIME_1100USEC
 // * Mode = MODE_CONTINUOUS | MODE_VOLTAGE | MODE_CURRENT
+//
 func (d *Device) Configure(cfg Config) {
 	var val uint16

@@ -7,12 +7,11 @@
 //     https://www.adafruit.com/product/3163
 //
 // Datasheet:
-//
 //    https://www.lumissil.com/assets/pdf/core/IS31FL3731_DS.pdf
 //
 // This driver inspired by Adafruit Python driver:
-//
 //    https://github.com/adafruit/Adafruit_CircuitPython_IS31FL3731
+//
 package is31fl3731

 import (
@@ -38,6 +38,7 @@ type DeviceAdafruitCharlieWing15x7 struct {
 //     | + - - - - - - - - - - - - - +
 //     |
 //     start (address 0x00)
+//
 func (d *DeviceAdafruitCharlieWing15x7) enableLEDs() (err error) {
 	for frame := FRAME_0; frame <= FRAME_7; frame++ {
 		err = d.selectCommand(frame)
@@ -2,6 +2,7 @@
 // typically used to control DC motors.
 //
 // Datasheet: https://www.ti.com/lit/ds/symlink/l293d.pdf
+//
 package l293x // import "tinygo.org/x/drivers/l293x"

 import (
@@ -2,6 +2,7 @@
 // typically used to control DC motors.
 //
 // Datasheet: https://www.elecrow.com/download/datasheet-l9110.pdf
+//
 package l9110x // import "tinygo.org/x/drivers/l9110x"

 import (
@@ -2,6 +2,7 @@
 // a magnetic sensor which is included on BBC micro:bit v1.5.
 //
 // Datasheet: https://www.st.com/resource/en/datasheet/lis2mdl.pdf
+//
 package lis2mdl // import "tinygo.org/x/drivers/lis2mdl"

 import (
@@ -1,6 +1,7 @@
 // Package lis3dh provides a driver for the LIS3DH digital accelerometer.
 //
 // Datasheet: https://www.st.com/resource/en/datasheet/lis3dh.pdf
+//
 package lis3dh // import "tinygo.org/x/drivers/lis3dh"

 import "tinygo.org/x/drivers"
@@ -1,6 +1,7 @@
 // Package lps22hb implements a driver for LPS22HB, a MEMS nano pressure sensor.
 //
 // Datasheet: https://www.st.com/resource/en/datasheet/dm00140895.pdf
+//
 package lps22hb

 import (
@@ -2,6 +2,7 @@
 // a 3 axis accelerometer/magnetic sensor which is included on BBC micro:bits v1.5.
 //
 // Datasheet: https://www.st.com/resource/en/datasheet/lsm303agr.pdf
+//
 package lsm303agr // import "tinygo.org/x/drivers/lsm303agr"

 import (
@@ -2,6 +2,7 @@
 // Measurement Unit (IMU)
 //
 // Datasheet: https://www.st.com/resource/en/datasheet/lsm6ds3.pdf
+//
 package lsm6ds3 // import "tinygo.org/x/drivers/lsm6ds3"

 import (
@@ -2,6 +2,7 @@
 // a 6 axis Inertial Measurement Unit (IMU)
 //
 // Datasheet: https://www.st.com/resource/en/datasheet/lsm6ds3tr.pdf
+//
 package lsm6ds3tr // import "tinygo.org/x/drivers/lsm6ds3tr"

 import (
@@ -2,6 +2,7 @@
 // a 6 axis Inertial Measurement Unit (IMU)
 //
 // Datasheet: https://www.st.com/resource/en/datasheet/lsm6dsox.pdf
+//
 package lsm6dsox // import "tinygo.org/x/drivers/lsm6dsox"

 import (
@@ -1,6 +1,7 @@
 // LSM9DS1, 9 axis Inertial Measurement Unit (IMU)
 //
 // Datasheet: https://www.st.com/resource/en/datasheet/lsm6ds3.pdf
+//
 package lsm9ds1 // import "tinygo.org/x/drivers/lsm9ds1"

 import (
@@ -2,6 +2,7 @@
 // Freescale/NXP.
 //
 // Datasheet: https://www.nxp.com/docs/en/data-sheet/MAG3110.pdf
+//
 package mag3110 // import "tinygo.org/x/drivers/mag3110"

 import "tinygo.org/x/drivers"
@@ -1,17 +1,11 @@
 package makeybutton

-const (
-	bufferSize    = 3
-	maxSumAllowed = 4
-)
+const bufferSize = 6

 // Buffer is a buffer to keep track of the most recent readings for a button.
-// in bit form.
 type Buffer struct {
-	data        [bufferSize]byte
-	byteCounter int
-	bitCounter  int
-	sum         int
+	readings [bufferSize]bool
+	index    int
 }

 // NewBuffer returns a new buffer.
@@ -19,47 +13,34 @@ func NewBuffer() *Buffer {
 	return &Buffer{}
 }

-// Sum returns the sum of all measurements
-func (b *Buffer) Sum() int {
-	return b.sum
+// Used returns how many bytes in buffer have been used.
+func (b *Buffer) Used() int {
+	return b.index
 }

-// Put stores a boolean button state into the buffer.
-func (b *Buffer) Put(val bool) {
-	currentMeasurement, oldestMeasurement := b.updateData(val)
-	b.updateCounters()
-
-	if currentMeasurement != 0 && b.sum < maxSumAllowed {
-		b.sum++
+// Put stores a boolean in the buffer.
+func (b *Buffer) Put(val bool) bool {
+	b.index++
+	if b.index >= bufferSize {
+		b.index = 0
 	}

-	if oldestMeasurement != 0 && b.sum > 0 {
-		b.sum--
-	}
+	b.readings[b.index] = val
+
+	return true
 }

-func (b *Buffer) updateData(val bool) (byte, byte) {
-	currentByte := b.data[b.byteCounter]
-	oldestMeasurement := (currentByte >> b.bitCounter) & 0x01
-
-	if val {
-		currentByte |= (1 << b.bitCounter)
+// Avg returns the "average" of all the readings in the buffer, by
+// treating a true as 1 and a false as -1.
+func (b *Buffer) Avg() int {
+	avg := 0
+	for i := 0; i < bufferSize; i++ {
+		if b.readings[i] {
+			avg += 1
 		} else {
-		currentByte &= ^(1 << b.bitCounter)
+			avg -= 1
+		}
 	}

-	b.data[b.byteCounter] = currentByte
-
-	return (currentByte >> b.bitCounter) & 0x01, oldestMeasurement
-}
-
-func (b *Buffer) updateCounters() {
-	b.bitCounter++
-	if b.bitCounter == 8 {
-		b.bitCounter = 0
-		b.byteCounter++
-		if b.byteCounter == bufferSize {
-			b.byteCounter = 0
-		}
-	}
+	return avg
 }
@@ -4,8 +4,6 @@
 // Inspired by the amazing MakeyMakey
 // https://makeymakey.com/
 //
-// This code is a reinterpretation of
-// https://github.com/sparkfun/MaKeyMaKey/blob/master/firmware/Arduino/makey_makey/makey_makey.ino
 package makeybutton

 import (
@@ -13,11 +11,6 @@ import (
 	"time"
 )

-var (
-	pressThreshold   int = 1
-	releaseThreshold int = 0
-)
-
 // ButtonState represents the state of a MakeyButton.
 type ButtonState int

@@ -40,7 +33,6 @@ const (
 type Button struct {
 	pin              machine.Pin
 	state            ButtonState
-	pressed          bool
 	readings         *Buffer
 	HighMeansPressed bool
 }
@@ -57,7 +49,7 @@ func NewButton(pin machine.Pin) *Button {

 // Configure configures the Makey Button pin to have the correct settings to detect touches.
 func (b *Button) Configure() error {
-	// Note that on AVR we have to first turn on the pullup, and then turn off the pullup,
+	// Note that we have to first turn on the pullup, and then turn off the pullup,
 	// in order for the pin to be properly floating.
 	b.pin.Configure(machine.PinConfig{Mode: machine.PinInputPullup})
 	time.Sleep(10 * time.Millisecond)
@@ -70,36 +62,30 @@ func (b *Button) Configure() error {
 // Get returns a ButtonEvent based on the most recent state of the button,
 // and if it has changed by being pressed or released.
 func (b *Button) Get() ButtonEvent {
-	b.update()
-
-	if b.pressed {
-		// the button had previously been pressed,
-		// but now appears to have been released.
-		if b.readings.Sum() <= releaseThreshold {
-			b.pressed = false
-			b.state = Release
-			return Released
+	// if pin is pulled up, a low value means the key is pressed
+	pressed := !b.pin.Get()
+	if b.HighMeansPressed {
+		// otherwise, a high value means the key is pressed
+		pressed = !pressed
 	}
-	} else {
-		// the button had previously not been pressed,
-		// but now appears to have been pressed.
-		if b.readings.Sum() >= pressThreshold {
-			b.pressed = true
+
+	avg := b.readings.Avg()
+	b.readings.Put(pressed)
+
+	switch {
+	case pressed && avg > -1*bufferSize+2:
+		if b.state == Press {
+			return NotChanged
+		}
+
 		b.state = Press
 		return Pressed
+	case !pressed:
+		if b.state == Press {
+			b.state = Release
+			return Released
 		}
 	}

 	return NotChanged
 }
-
-func (b *Button) update() {
-	// if pin is pulled up, a low value means the key is pressed
-	press := !b.pin.Get()
-	if b.HighMeansPressed {
-		// otherwise, a high value means the key is pressed
-		press = !press
-	}
-
-	b.readings.Put(press)
-}
@@ -1,6 +1,7 @@
 // Package mcp2515 implements a driver for the MCP2515 CAN Controller.
 //
 // Datasheet: http://ww1.microchip.com/downloads/en/DeviceDoc/MCP2515-Stand-Alone-CAN-Controller-with-SPI-20001801J.pdf
+//
 package mcp2515 // import "tinygo.org/x/drivers/mcp2515"

 const DebugEn = 0
@@ -1,6 +1,7 @@
 // Package mcp3008 implements a driver for the MCP3008 Analog to Digital Converter.
 //
 // Datasheet: http://ww1.microchip.com/downloads/en/DeviceDoc/21295d.pdf
+//
 package mcp3008 // import "tinygo.org/x/drivers/mcp3008"

 import (
@@ -4,6 +4,7 @@
 // Package microbitmatrix implements a driver for the BBC micro:bit's LED matrix.
 //
 // Schematic: https://github.com/bbcmicrobit/hardware/blob/master/SCH_BBC-Microbit_V1.3B.pdf
+//
 package microbitmatrix // import "tinygo.org/x/drivers/microbitmatrix"

 import (
@@ -4,6 +4,7 @@
 // Package microbitmatrix implements a driver for the BBC micro:bit version 2 LED matrix.
 //
 // Schematic:
+//
 package microbitmatrix // import "tinygo.org/x/drivers/microbitmatrix"

 import (
@@ -1,6 +1,7 @@
 // Package microbitmatrix implements a driver for the BBC micro:bit's LED matrix.
 //
 // Schematic: https://github.com/bbcmicrobit/hardware/blob/master/SCH_BBC-Microbit_V1.3B.pdf
+//
 package microbitmatrix // import "tinygo.org/x/drivers/microbitmatrix"

 import (
@@ -27,9 +28,9 @@ func (d *Device) SetPixel(x int16, y int16, c color.RGBA) {
 		return
 	}
 	if c.R != 0 || c.G != 0 || c.B != 0 {
-		d.buffer[matrixRotations[d.rotation][y][x][0]][matrixRotations[d.rotation][y][x][1]] = true
+		d.buffer[matrixRotations[d.rotation][x][y][0]][matrixRotations[d.rotation][x][y][1]] = true
 	} else {
-		d.buffer[matrixRotations[d.rotation][y][x][0]][matrixRotations[d.rotation][y][x][1]] = false
+		d.buffer[matrixRotations[d.rotation][x][y][0]][matrixRotations[d.rotation][x][y][1]] = false
 	}
 }

@@ -38,5 +39,5 @@ func (d *Device) GetPixel(x int16, y int16) bool {
 	if x < 0 || x >= 5 || y < 0 || y >= 5 {
 		return false
 	}
-	return d.buffer[matrixRotations[d.rotation][y][x][0]][matrixRotations[d.rotation][y][x][1]]
+	return d.buffer[matrixRotations[d.rotation][x][y][0]][matrixRotations[d.rotation][x][y][1]]
 }
@@ -2,6 +2,7 @@
 // For example, the Adafruit PDM MEMS breakout board (https://www.adafruit.com/product/3492)
 //
 // Datasheet: https://cdn-learn.adafruit.com/assets/assets/000/049/977/original/MP34DT01-M.pdf
+//
 package microphone // import "tinygo.org/x/drivers/microphone"

 import (
@@ -140,6 +141,7 @@ func (d *Device) GetSoundPressure() (int32, int32) {
 // for that sample.
 //
 // For more information: https://en.wikipedia.org/wiki/Sinc_filter
+//
 var sincfilter = [quantizeSteps]uint16{
 	0, 2, 9, 21, 39, 63, 94, 132,
 	179, 236, 302, 379, 467, 565, 674, 792,
@@ -3,6 +3,7 @@
 //
 // Datasheet:
 // https://www.nxp.com/docs/en/data-sheet/MMA8653FC.pdf
+//
 package mma8653 // import "tinygo.org/x/drivers/mma8653"

 import "tinygo.org/x/drivers"
@@ -4,6 +4,7 @@
 // Datasheets:
 // https://store.invensense.com/datasheets/invensense/MPU-6050_DataSheet_V3%204.pdf
 // https://www.invensense.com/wp-content/uploads/2015/02/MPU-6000-Register-Map1.pdf
+//
 package mpu6050 // import "tinygo.org/x/drivers/mpu6050"

 import "tinygo.org/x/drivers"
@@ -33,6 +33,7 @@ import (
 // with the expectation that the Jar will insert those mutated cookies
 // with the updated values (assuming the origin matches).
 // If Jar is nil, the initial cookies are forwarded without change.
+//
 type Client struct {
 	// Transport specifies the mechanism by which individual
 	// HTTP requests are made.
@@ -358,11 +358,9 @@ func sanitizeCookieName(n string) string {
 // https://tools.ietf.org/html/rfc6265#section-4.1.1
 // cookie-value      = *cookie-octet / ( DQUOTE *cookie-octet DQUOTE )
 // cookie-octet      = %x21 / %x23-2B / %x2D-3A / %x3C-5B / %x5D-7E
-//
 //           ; US-ASCII characters excluding CTLs,
 //           ; whitespace DQUOTE, comma, semicolon,
 //           ; and backslash
-//
 // We loosen this as spaces and commas are common in cookie values
 // but we produce a quoted cookie-value if and only if v contains
 // commas or spaces.
@@ -105,11 +105,8 @@ func (r *Response) Cookies() []*Cookie {
 }

 // RFC 7234, section 5.4: Should treat
-//
 //	Pragma: no-cache
-//
 // like
-//
 //	Cache-Control: no-cache
 func fixPragmaCacheControl(header Header) {
 	if hp, ok := header["Pragma"]; ok && len(hp) > 0 && hp[0] == "no-cache" {
@@ -142,7 +142,7 @@ func Error(w ResponseWriter, error string, code int) {
 func NotFound(w ResponseWriter, r *Request) { Error(w, "404 page not found", StatusNotFound) }

 // NotFoundHandler returns a simple request handler
-// that replies to each request with a “404 page not found” reply.
+// that replies to each request with a ``404 page not found'' reply.
 func NotFoundHandler() Handler { return HandlerFunc(NotFound) }

 // StripPrefix returns a handler that serves HTTP requests by removing the
@@ -435,7 +435,7 @@ func (mux *ServeMux) shouldRedirectRLocked(host, path string) bool {
 // the pattern that will match after following the redirect.
 //
 // If there is no registered handler that applies to the request,
-// Handler returns a “page not found” handler and an empty pattern.
+// Handler returns a ``page not found'' handler and an empty pattern.
 func (mux *ServeMux) Handler(r *Request) (h Handler, pattern string) {

 	// CONNECT requests are not canonicalized.
@@ -5,7 +5,6 @@ package mqtt
 import (
 	"errors"
 	"strings"
-	"sync"
 	"time"

 	"github.com/eclipse/paho.mqtt.golang/packets"
@@ -20,12 +19,6 @@ import (
 func NewClient(o *ClientOptions) Client {
 	c := &mqttclient{opts: o, adaptor: o.Adaptor}
 	c.msgRouter, c.stopRouter = newRouter()
-
-	c.inboundPacketChan = make(chan packets.ControlPacket, 10)
-	c.stopInbound = make(chan struct{})
-	c.incomingPubChan = make(chan *packets.PublishPacket, 10)
-	// this launches a goroutine, so only call once per client:
-	c.msgRouter.matchAndDispatch(c.incomingPubChan, c.opts.Order, c)
 	return c
 }

@@ -35,17 +28,11 @@ type mqttclient struct {
 	connected       bool
 	opts            *ClientOptions
 	mid             uint16
-	inboundPacketChan chan packets.ControlPacket
-	stopInbound       chan struct{}
+	inbound         chan packets.ControlPacket
+	stop            chan struct{}
 	msgRouter       *router
 	stopRouter      chan bool
 	incomingPubChan chan *packets.PublishPacket
-	// stats for keepalive
-	lastReceive time.Time
-	lastSend    time.Time
-	// keep track of routines and signal a shutdown
-	workers  sync.WaitGroup
-	shutdown bool
 }

 // AddRoute allows you to add a handler for messages on a specific topic
@@ -69,9 +56,6 @@ func (c *mqttclient) IsConnectionOpen() bool {

 // Connect will create a connection to the message broker.
 func (c *mqttclient) Connect() Token {
-	if c.IsConnected() {
-		return &mqtttoken{}
-	}
 	var err error

 	// make connection
@@ -93,6 +77,10 @@ func (c *mqttclient) Connect() Token {
 	}

 	c.mid = 1
+	c.inbound = make(chan packets.ControlPacket, 10)
+	c.stop = make(chan struct{})
+	c.incomingPubChan = make(chan *packets.PublishPacket, 10)
+	c.msgRouter.matchAndDispatch(c.incomingPubChan, c.opts.Order, c)

 	// send the MQTT connect message
 	connectPkt := packets.NewControlPacket(packets.Connect).(*packets.ConnectPacket)
@@ -110,7 +98,7 @@ func (c *mqttclient) Connect() Token {
 	connectPkt.ClientIdentifier = c.opts.ClientID
 	connectPkt.ProtocolVersion = byte(c.opts.ProtocolVersion)
 	connectPkt.ProtocolName = "MQTT"
-	connectPkt.Keepalive = uint16(c.opts.KeepAlive)
+	connectPkt.Keepalive = 60

 	connectPkt.WillFlag = c.opts.WillEnabled
 	connectPkt.WillTopic = c.opts.WillTopic
@@ -122,7 +110,6 @@ func (c *mqttclient) Connect() Token {
 	if err != nil {
 		return &mqtttoken{err: err}
 	}
-	c.lastSend = time.Now()

 	// TODO: handle timeout as ReadPacket blocks until it gets a packet.
 	// CONNECT response.
@@ -140,34 +127,18 @@ func (c *mqttclient) Connect() Token {
 		}
 	}

-	go processInbound(c)
 	go readMessages(c)
-	go keepAlive(c)
+	go processInbound(c)

 	return &mqtttoken{}
 }

 // Disconnect will end the connection with the server, but not before waiting
 // the specified number of milliseconds to wait for existing work to be
-// completed. Blocks until disconnected.
+// completed.
 func (c *mqttclient) Disconnect(quiesce uint) {
-	c.shutdownRoutines()
-	// block until all done
-	for c.connected {
-		time.Sleep(time.Millisecond * 10)
-	}
-	return
-}
-
-// shutdownRoutines will disconnect and shut down all processes. If you want to trigger a
-// disconnect internally, make sure you call this instead of Disconnect() to avoid deadlocks
-func (c *mqttclient) shutdownRoutines() {
-	if c.shutdown {
-		return
-	}
-	c.shutdown = true
 	c.conn.Close()
-	c.stopInbound <- struct{}{}
+	return
 }

 // Publish will publish a message with the specified QoS and content
@@ -182,7 +153,6 @@ func (c *mqttclient) Publish(topic string, qos byte, retained bool, payload inte
 	pub.Qos = qos
 	pub.TopicName = topic
 	pub.Retain = retained
-
 	switch payload.(type) {
 	case string:
 		pub.Payload = []byte(payload.(string))
@@ -198,8 +168,6 @@ func (c *mqttclient) Publish(topic string, qos byte, retained bool, payload inte
 	if err != nil {
 		return &mqtttoken{err: err}
 	}
-	// update this for every control message that is sent successfully, for keepalive
-	c.lastSend = time.Now()

 	return &mqtttoken{}
 }
@@ -227,7 +195,6 @@ func (c *mqttclient) Subscribe(topic string, qos byte, callback MessageHandler)
 	if err != nil {
 		return &mqtttoken{err: err}
 	}
-	c.lastSend = time.Now()

 	return &mqtttoken{}
 }
@@ -253,13 +220,12 @@ func (c *mqttclient) OptionsReader() ClientOptionsReader {
 }

 func processInbound(c *mqttclient) {
-PROCESS:
 	for {
 		select {
-		case msg := <-c.inboundPacketChan:
+		case msg := <-c.inbound:
 			switch m := msg.(type) {
 			case *packets.PingrespPacket:
-				// println("pong")
+				// TODO: handle this
 			case *packets.SubackPacket:
 				// TODO: handle this
 			case *packets.UnsubackPacket:
@@ -276,85 +242,33 @@ PROCESS:
 			case *packets.PubcompPacket:
 				// TODO: handle this
 			}
-		case <-c.stopInbound:
-			break PROCESS
+		case <-c.stop:
+			return
 		}
 	}
-
-	// as this routine could be the last to finish (if a lot of messages are queued in the
-	// channel), it is the last to turn out the lights
-
-	c.workers.Wait()
-	c.connected = false
-	c.shutdown = false
 }

 // readMessages reads incoming messages off the wire.
-// incoming messages are then send into inbound buffered channel.
+// incoming messages are then send into inbound channel.
 func readMessages(c *mqttclient) {
-	c.workers.Add(1)
-	defer c.workers.Done()
-
 	var err error
 	var cp packets.ControlPacket

-	for !c.shutdown {
+PROCESS:
+	for {
 		if cp, err = c.ReadPacket(); err != nil {
-			c.shutdownRoutines()
-			return
+			break PROCESS
 		}
 		if cp != nil {
-			c.inboundPacketChan <- cp
-			// notify keepalive logic that we recently received a packet
-			c.lastReceive = time.Now()
+			c.inbound <- cp
+			// TODO: Notify keepalive logic that we recently received a packet
 		}

 		time.Sleep(100 * time.Millisecond)
 	}
-}

-// keepAlive is a goroutine to handle sending ping requests according to the MQTT spec. If the keepalive time has
-// been reached with no messages being sent, we will send a ping request and check back to see if we've
-// had any activity by the timeout. If not, disconnect.
-func keepAlive(c *mqttclient) {
-	c.workers.Add(1)
-	defer c.workers.Done()
-
-	var err error
-	var ping *packets.PingreqPacket
-	var timeout, pingsent time.Time
-
-	for !c.shutdown {
-		// As long as we haven't reached the keepalive value...
-		if time.Since(c.lastSend) < time.Duration(c.opts.KeepAlive)*time.Second {
-			// ...sleep and check shutdown status again
-			time.Sleep(time.Millisecond * 100)
-			continue
-		}
-
-		// value has been reached, so send a ping request
-		ping = packets.NewControlPacket(packets.Pingreq).(*packets.PingreqPacket)
-		if err = ping.Write(c.conn); err != nil {
-			// if connection is lost, report disconnect
-			c.shutdownRoutines()
-			return
-		}
-		// println("ping")
-
-		c.lastSend = time.Now()
-		pingsent = time.Now()
-		timeout = pingsent.Add(c.opts.PingTimeout)
-
-		// as long as we are still connected and haven't received anything after the ping...
-		for !c.shutdown && c.lastReceive.Before(pingsent) {
-			// if the timeout has passed, disconnect
-			if time.Now().After(timeout) {
-				c.shutdownRoutines()
-				return
-			}
-			time.Sleep(time.Millisecond * 100)
-		}
-	}
+	// TODO: handle if we received an error on read.
+	// If disconnect is in progress, swallow error and return
 }

 func (c *mqttclient) ackFunc(packet *packets.PublishPacket) func() {
@@ -42,11 +42,9 @@ const (
 // with an MQTT server using non-blocking methods that allow work
 // to be done in the background.
 // An application may connect to an MQTT server using:
-//
 //   A plain TCP socket
 //   A secure SSL/TLS socket
 //   A websocket
-//
 // To enable ensured message delivery at Quality of Service (QoS) levels
 // described in the MQTT spec, a message persistence mechanism must be
 // used. This is done by providing a type which implements the Store
@@ -212,7 +210,7 @@ type ClientOptions struct {

 // NewClientOptions returns a new ClientOptions struct.
 func NewClientOptions() *ClientOptions {
-	return &ClientOptions{Adaptor: net.ActiveDevice, ProtocolVersion: 4, KeepAlive: 60, PingTimeout: time.Second * 10}
+	return &ClientOptions{Adaptor: net.ActiveDevice, ProtocolVersion: 4}
 }

 // AddBroker adds a broker URI to the list of brokers to be used. The format should be
@@ -259,23 +257,6 @@ func (o *ClientOptions) SetPassword(p string) *ClientOptions {
 	return o
 }

-// SetKeepAlive will set the amount of time (in seconds) that the client
-// should wait before sending a PING request to the broker. This will
-// allow the client to know that a connection has not been lost with the
-// server.
-func (o *ClientOptions) SetKeepAlive(k time.Duration) *ClientOptions {
-	o.KeepAlive = int64(k / time.Second)
-	return o
-}
-
-// SetPingTimeout will set the amount of time (in seconds) that the client
-// will wait after sending a PING request to the broker, before deciding
-// that the connection has been lost. Default is 10 seconds.
-func (o *ClientOptions) SetPingTimeout(k time.Duration) *ClientOptions {
-	o.PingTimeout = k
-	return o
-}
-
 // SetWill accepts a string will message to be set. When the client connects,
 // it will give this will message to the broker, which will then publish the
 // provided payload (the will) to any clients that are subscribed to the provided
@@ -234,6 +234,7 @@ func (c *SerialConn) SetWriteDeadline(t time.Time) error {
 // ResolveTCPAddr returns an address of TCP end point.
 //
 // The network must be a TCP network name.
+//
 func ResolveTCPAddr(network, address string) (*TCPAddr, error) {
 	// TODO: make sure network is 'tcp'
 	// separate domain from port, if any
@@ -256,6 +257,7 @@ func ResolveTCPAddr(network, address string) (*TCPAddr, error) {
 // ResolveUDPAddr returns an address of UDP end point.
 //
 // The network must be a UDP network name.
+//
 func ResolveUDPAddr(network, address string) (*UDPAddr, error) {
 	// TODO: make sure network is 'udp'
 	// separate domain from port, if any
--- a/Show More
+++ b/Show More