release: v0.17.1

Signed-off-by: deadprogram <ron@hybridgroup.com>

CHANGELOG.md

@@ -1,3 +1,28 @@
+0.17.1
+---
+- To correct an error in the release process. Same as 0.17.0.
+
+0.17.0
+---
+- **new devices**
+    - rtl8720dn: add support for rtl8720dn
+    - sdcard: add support for spi sdcard driver, along with fatfs
+- **enhancements**
+    - apa102: use 4-byte buffer to improve speed
+    - bmi160: avoid heap allocations
+    - ili9341: add standard SPI driver
+    - wifinina
+        - avoid fmt package
+        - Fix RSSI command for WiFiNINA + Print current SSID + Wait for correct time before printing it out + Cleanup
+    - ws2812
+        - rename the pin to ws2812
+        - add tag for nrf52833
+        - Disable interrupts before sending ws2812 data
+        - add support for qtpy and atsame5x
+- **core**
+    - modules: switch to use tinygo-org version of tinyfs package
+    - all: use machine.Serial as the default output
+
 0.16.0
 ---
 - **new devices**

Makefile

@@ -197,12 +197,14 @@ endif
 	@md5sum ./build/test.hex
 	tinygo build -size short -o ./build/test.hex -target=feather-m4 ./examples/sdcard/tinyfs/
 	@md5sum ./build/test.hex
+	tinygo build -size short -o ./build/test.hex -target=wioterminal ./examples/rtl8720dn/webclient/
+	@md5sum ./build/test.hex
 
 DRIVERS = $(wildcard */)
 NOTESTS = build examples flash semihosting pcd8544 shiftregister st7789 microphone mcp3008 gps microbitmatrix \
 		hcsr04 ssd1331 ws2812 thermistor apa102 easystepper ssd1351 ili9341 wifinina shifter hub75 \
 		hd44780 buzzer ssd1306 espat l9110x st7735 bmi160 l293x dht keypad4x4 max72xx p1am tone tm1637 \
-		pcf8563 mcp2515 servo sdcard
+		pcf8563 mcp2515 servo sdcard rtl8720dn
 TESTS = $(filter-out $(addsuffix /%,$(NOTESTS)),$(DRIVERS))
 
 unit-test:

README.md

@@ -52,7 +52,7 @@ func main() {
 
 ## Currently supported devices
 
-The following 66 devices are supported.
+The following 67 devices are supported.
 
 | Device Name | Interface Type |
 |----------|-------------|
@@ -100,6 +100,7 @@ The following 66 devices are supported.
 | [PCD8544 display](http://eia.udg.edu/~forest/PCD8544_1.pdf) | SPI |
 | [PCF8563 real time clock](https://www.nxp.com/docs/en/data-sheet/PCF8563.pdf) | I2C |
 | [Resistive Touchscreen (4-wire)](http://ww1.microchip.com/downloads/en/Appnotes/doc8091.pdf) | GPIO |
+| [RTL8720DN 2.4G/5G Dual Bands Wireless and BLE5.0](https://www.seeedstudio.com/Realtek8720DN-2-4G-5G-Dual-Bands-Wireless-and-BLE5-0-Combo-Module-p-4442.html) | UART |
 | [Semihosting](https://wiki.segger.com/Semihosting) | Debug |
 | [Servo](https://learn.sparkfun.com/tutorials/hobby-servo-tutorial/all) | PWM |
 | [Shift register (PISO)](https://en.wikipedia.org/wiki/Shift_register#Parallel-in_serial-out_\(PISO\)) | GPIO |

examples/ili9341/pyportal_boing/main.go

@@ -25,7 +25,7 @@ const (
 )
 
 var (
-	frameBuffer = [(graphics.BALLHEIGHT + 8) * (graphics.BALLWIDTH + 8)]uint16{}
+	frameBuffer = [(graphics.BALLHEIGHT + 8) * (graphics.BALLWIDTH + 8) * 2]uint8{}
 
 	startTime int64
 	frame     int64
@@ -179,7 +179,8 @@ func main() {
 						c = BGCOLOR
 					}
 				}
-				frameBuffer[y*int(width)+x] = c
+				frameBuffer[(y*int(width)+x)*2] = byte(c >> 8)
+				frameBuffer[(y*int(width)+x)*2+1] = byte(c)
 				bx1++ // Increment bitmap position counters (X axis)
 				bgx1++
 			}
@@ -190,7 +191,7 @@ func main() {
 			bgy++
 		}
 
-		display.DrawRGBBitmap(minx, miny, frameBuffer[:width*height], width, height)
+		display.DrawRGBBitmap8(minx, miny, frameBuffer[:width*height*2], width, height)
 
 		// Show approximate frame rate
 		frame++
@@ -215,11 +216,13 @@ func DrawBackground() {
 				b = graphics.Background[j*byteWidth+k/8]
 			}
 			if b&0x80 == 0 {
-				frameBuffer[k] = BGCOLOR
+				frameBuffer[2*k] = byte(BGCOLOR >> 8)
+				frameBuffer[2*k+1] = byte(BGCOLOR & 0xFF)
 			} else {
-				frameBuffer[k] = GRIDCOLOR
+				frameBuffer[2*k] = byte(GRIDCOLOR >> 8)
+				frameBuffer[2*k+1] = byte(GRIDCOLOR & 0xFF)
 			}
 		}
-		display.DrawRGBBitmap(0, j, frameBuffer[0:w], w, 1)
+		display.DrawRGBBitmap8(0, j, frameBuffer[0:w*2], w, 1)
 	}
 }

examples/rtl8720dn/tlsclient/main.go

@@ -0,0 +1,141 @@
+package main
+
+import (
+	"fmt"
+	"strings"
+	"time"
+
+	"tinygo.org/x/drivers/net"
+	"tinygo.org/x/drivers/net/tls"
+	"tinygo.org/x/drivers/rtl8720dn"
+)
+
+// You can override the setting with the init() in another source code.
+// func init() {
+//    ssid = "your-ssid"
+//    password = "your-password"
+//    debug = true
+//    server = "tinygo.org"
+//    test_root_ca = "..."
+// }
+
+var (
+	ssid     string
+	password string
+	server   string = "www.example.com"
+	debug           = false
+)
+
+// Set the test_root_ca created by the following command
+// $ openssl s_client -showcerts -verify 5 -connect www.example.com:443 < /dev/null
+var test_root_ca = `-----BEGIN CERTIFICATE-----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+-----END CERTIFICATE-----
+`
+
+var buf [0x400]byte
+
+var lastRequestTime time.Time
+var conn net.Conn
+var adaptor *rtl8720dn.RTL8720DN
+
+func main() {
+	err := run()
+	for err != nil {
+		fmt.Printf("error: %s\r\n", err.Error())
+		time.Sleep(5 * time.Second)
+	}
+}
+
+func run() error {
+	rtl, err := setupRTL8720DN()
+	if err != nil {
+		return err
+	}
+	rtl.SetRootCA(&test_root_ca)
+	net.UseDriver(rtl)
+
+	err = rtl.ConnectToAP(ssid, password)
+	if err != nil {
+		return err
+	}
+
+	ip, subnet, gateway, err := rtl.GetIP()
+	if err != nil {
+		return err
+	}
+	fmt.Printf("IP Address : %s\r\n", ip)
+	fmt.Printf("Mask       : %s\r\n", subnet)
+	fmt.Printf("Gateway    : %s\r\n", gateway)
+
+	cnt := 0
+	for {
+		readConnection()
+		if time.Now().Sub(lastRequestTime).Milliseconds() >= 10000 {
+			makeHTTPSRequest()
+			cnt++
+			fmt.Printf("-------- %d --------\r\n", cnt)
+		}
+	}
+}
+
+func readConnection() {
+	if conn != nil {
+		for n, err := conn.Read(buf[:]); n > 0; n, err = conn.Read(buf[:]) {
+			if err != nil {
+				println("Read error: " + err.Error())
+			} else {
+				print(string(buf[0:n]))
+			}
+		}
+	}
+}
+
+func makeHTTPSRequest() {
+
+	var err error
+	if conn != nil {
+		conn.Close()
+	}
+
+	message("\r\n---------------\r\nDialing TCP connection")
+	conn, err = tls.Dial("tcp", server, nil)
+	for ; err != nil; conn, err = tls.Dial("tcp", server, nil) {
+		message("Connection failed: " + err.Error())
+		time.Sleep(5 * time.Second)
+	}
+	println("Connected!\r")
+
+	print("Sending HTTPS request...")
+	fmt.Fprintln(conn, "GET / HTTP/1.1")
+	fmt.Fprintln(conn, "Host:", strings.Split(server, ":")[0])
+	fmt.Fprintln(conn, "User-Agent: TinyGo")
+	fmt.Fprintln(conn, "Connection: close")
+	fmt.Fprintln(conn)
+	println("Sent!\r\n\r")
+
+	lastRequestTime = time.Now()
+}
+
+func message(msg string) {
+	println(msg, "\r")
+}

examples/rtl8720dn/tlsclient/wioterminal.go

@@ -0,0 +1,71 @@
+// +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)
+}

examples/rtl8720dn/webclient-tinyterm/main.go

@@ -0,0 +1,143 @@
+package main
+
+import (
+	"fmt"
+	"image/color"
+	"time"
+
+	"tinygo.org/x/drivers/net"
+	"tinygo.org/x/drivers/rtl8720dn"
+	"tinygo.org/x/tinyfont/proggy"
+	"tinygo.org/x/tinyterm"
+)
+
+// You can override the setting with the init() in another source code.
+// func init() {
+//    ssid = "your-ssid"
+//    password = "your-password"
+//    debug = true
+//    server = "tinygo.org"
+// }
+
+var (
+	ssid     string
+	password string
+	server   string = "tinygo.org"
+	debug           = false
+)
+
+var (
+	terminal = tinyterm.NewTerminal(display)
+
+	black = color.RGBA{0, 0, 0, 255}
+	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}
+
+	font = &proggy.TinySZ8pt7b
+)
+
+var buf [0x400]byte
+
+var lastRequestTime time.Time
+var conn net.Conn
+var adaptor *rtl8720dn.RTL8720DN
+
+func main() {
+	display.FillScreen(black)
+	backlight.High()
+
+	terminal.Configure(&tinyterm.Config{
+		Font:       font,
+		FontHeight: 10,
+		FontOffset: 6,
+	})
+
+	err := run()
+	for err != nil {
+		fmt.Fprintf(terminal, "error: %s\r\n", err.Error())
+		time.Sleep(5 * time.Second)
+	}
+}
+
+func run() error {
+	fmt.Fprintf(terminal, "setupRTL8720DN()\r\n")
+	rtl, err := setupRTL8720DN()
+	if err != nil {
+		return err
+	}
+	net.UseDriver(rtl)
+
+	fmt.Fprintf(terminal, "ConnectToAP()\r\n")
+	err = rtl.ConnectToAP(ssid, password)
+	if err != nil {
+		return err
+	}
+	fmt.Fprintf(terminal, "connected\r\n\r\n")
+
+	ip, subnet, gateway, err := rtl.GetIP()
+	if err != nil {
+		return err
+	}
+	fmt.Fprintf(terminal, "IP Address : %s\r\n", ip)
+	fmt.Fprintf(terminal, "Mask       : %s\r\n", subnet)
+	fmt.Fprintf(terminal, "Gateway    : %s\r\n", gateway)
+
+	cnt := 0
+	for {
+		readConnection()
+		if time.Now().Sub(lastRequestTime).Milliseconds() >= 10000 {
+			makeHTTPRequest()
+			cnt++
+			fmt.Fprintf(terminal, "-------- %d --------\r\n", cnt)
+		}
+	}
+}
+
+func readConnection() {
+	if conn != nil {
+		for n, err := conn.Read(buf[:]); n > 0; n, err = conn.Read(buf[:]) {
+			if err != nil {
+				fmt.Fprintf(terminal, "Read error: "+err.Error()+"\r\n")
+			} else {
+				fmt.Fprintf(terminal, string(buf[0:n]))
+			}
+		}
+	}
+}
+
+func makeHTTPRequest() {
+
+	var err error
+	if conn != nil {
+		conn.Close()
+	}
+
+	// make TCP connection
+	ip := net.ParseIP(server)
+	raddr := &net.TCPAddr{IP: ip, Port: 80}
+	laddr := &net.TCPAddr{Port: 8080}
+
+	message("\r\n---------------\r\nDialing TCP connection")
+	conn, err = net.DialTCP("tcp", laddr, raddr)
+	for ; err != nil; conn, err = net.DialTCP("tcp", laddr, raddr) {
+		message("Connection failed: " + err.Error())
+		time.Sleep(5 * time.Second)
+	}
+	fmt.Fprintf(terminal, "Connected!\r\n")
+
+	fmt.Fprintf(terminal, "Sending HTTP request...")
+	fmt.Fprintln(conn, "GET / HTTP/1.1")
+	fmt.Fprintln(conn, "Host:", server)
+	fmt.Fprintln(conn, "User-Agent: TinyGo")
+	fmt.Fprintln(conn, "Connection: close")
+	fmt.Fprintln(conn)
+	fmt.Fprintf(terminal, "Sent!\r\n\r\n")
+
+	lastRequestTime = time.Now()
+}
+
+func message(msg string) {
+	fmt.Fprintf(terminal, "%s\r\n", msg)
+}

examples/rtl8720dn/webclient-tinyterm/wioterminal.go

@@ -0,0 +1,97 @@
+// +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)
+}

examples/rtl8720dn/webclient/main.go

@@ -0,0 +1,116 @@
+package main
+
+import (
+	"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"
+//    password = "your-password"
+//    debug = true
+//    server = "tinygo.org"
+// }
+
+var (
+	ssid     string
+	password string
+	server   string = "tinygo.org"
+	debug           = false
+)
+
+var buf [0x400]byte
+
+var lastRequestTime time.Time
+var conn net.Conn
+var adaptor *rtl8720dn.RTL8720DN
+
+func main() {
+	err := run()
+	for err != nil {
+		fmt.Printf("error: %s\r\n", err.Error())
+		time.Sleep(5 * time.Second)
+	}
+}
+
+func run() error {
+	rtl, err := setupRTL8720DN()
+	if err != nil {
+		return err
+	}
+	net.UseDriver(rtl)
+
+	err = rtl.ConnectToAP(ssid, password)
+	if err != nil {
+		return err
+	}
+
+	ip, subnet, gateway, err := rtl.GetIP()
+	if err != nil {
+		return err
+	}
+	fmt.Printf("IP Address : %s\r\n", ip)
+	fmt.Printf("Mask       : %s\r\n", subnet)
+	fmt.Printf("Gateway    : %s\r\n", gateway)
+
+	cnt := 0
+	for {
+		readConnection()
+		if time.Now().Sub(lastRequestTime).Milliseconds() >= 10000 {
+			makeHTTPRequest()
+			cnt++
+			fmt.Printf("-------- %d --------\r\n", cnt)
+		}
+	}
+}
+
+func readConnection() {
+	if conn != nil {
+		for n, err := conn.Read(buf[:]); n > 0; n, err = conn.Read(buf[:]) {
+			if err != nil {
+				println("Read error: " + err.Error())
+			} else {
+				print(string(buf[0:n]))
+			}
+		}
+	}
+}
+
+func makeHTTPRequest() {
+
+	var err error
+	if conn != nil {
+		conn.Close()
+	}
+
+	// make TCP connection
+	ip := net.ParseIP(server)
+	raddr := &net.TCPAddr{IP: ip, Port: 80}
+	laddr := &net.TCPAddr{Port: 8080}
+
+	message("\r\n---------------\r\nDialing TCP connection")
+	conn, err = net.DialTCP("tcp", laddr, raddr)
+	for ; err != nil; conn, err = net.DialTCP("tcp", laddr, raddr) {
+		message("Connection failed: " + err.Error())
+		time.Sleep(5 * time.Second)
+	}
+	println("Connected!\r")
+
+	print("Sending HTTP request...")
+	fmt.Fprintln(conn, "GET / HTTP/1.1")
+	fmt.Fprintln(conn, "Host:", server)
+	fmt.Fprintln(conn, "User-Agent: TinyGo")
+	fmt.Fprintln(conn, "Connection: close")
+	fmt.Fprintln(conn)
+	println("Sent!\r\n\r")
+
+	lastRequestTime = time.Now()
+}
+
+func message(msg string) {
+	println(msg, "\r")
+}

examples/rtl8720dn/webclient/wioterminal.go

@@ -0,0 +1,71 @@
+// +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)
+}

examples/sdcard/tinyfs/console/console.go

@@ -11,7 +11,7 @@ import (
 	"strings"
 	"time"
 
-	"github.com/tinygo-org/tinyfs"
+	"tinygo.org/x/tinyfs"
 )
 
 const consoleBufLen = 64
@@ -35,6 +35,7 @@ var (
 	commands = map[string]cmdfunc{
 		"":        noop,
 		"dbg":     dbg,
+		"help":    help,
 		"lsblk":   lsblk,
 		"mount":   mount,
 		"umount":  umount,
@@ -160,6 +161,28 @@ func runCommand(line string) {
 
 func noop(argv []string) {}
 
+func help(argv []string) {
+	fmt.Printf("help\r\n")
+	fmt.Printf("  show help\r\n")
+	fmt.Printf("dbg\r\n")
+	fmt.Printf("  toggle debug mode\r\n")
+	fmt.Printf("xxd <hex address, ex: 0xA0> <size of hexdump in bytes>\r\n")
+	fmt.Printf("  hexdump the specified address\r\n")
+	fmt.Printf("ls <target file>\r\n")
+	fmt.Printf("  list information\r\n")
+	fmt.Printf("samples\r\n")
+	fmt.Printf("  write some files in the root directory\r\n")
+	fmt.Printf("mkdir <target dir>\r\n")
+	fmt.Printf("  create directory\r\n")
+	fmt.Printf("cat <target file>\r\n")
+	fmt.Printf("  print the contents of file\r\n")
+	fmt.Printf("create <target file>\r\n")
+	fmt.Printf("  create file\r\n")
+	fmt.Printf("write <target file>\r\n")
+	fmt.Printf("  write to file (press CTRL-D to exit)\r\n")
+	fmt.Printf("rm\r\n")
+}
+
 func dbg(argv []string) {
 	if debug {
 		debug = false
@@ -421,7 +444,7 @@ func cat(argv []string) {
 		println("Trying to cat to " + tgt)
 	}
 	if tgt == "" {
-		println("Usage: cat <target dir>")
+		println("Usage: cat <target file>")
 		return
 	}
 	if debug {

examples/sdcard/tinyfs/main.go

@@ -5,9 +5,9 @@ import (
 	"machine"
 	"time"
 
-	"github.com/tinygo-org/tinyfs/fatfs"
 	"tinygo.org/x/drivers/examples/sdcard/tinyfs/console"
 	"tinygo.org/x/drivers/sdcard"
+	"tinygo.org/x/tinyfs/fatfs"
 )
 
 var (

examples/ws2812/others.go

@@ -6,5 +6,5 @@ import "machine"
 
 // Replace neo and led in the code below to match the pin
 // that you are using if different.
-var neo machine.Pin = machine.NEOPIXELS
+var neo machine.Pin = machine.WS2812
 var led = machine.LED

go.mod

@@ -5,5 +5,7 @@ go 1.15
 require (
 	github.com/eclipse/paho.mqtt.golang v1.2.0
 	github.com/frankban/quicktest v1.10.2
-	github.com/tinygo-org/tinyfs v0.0.0-20210514090915-924e60a7bcf8
+	tinygo.org/x/tinyfont v0.2.1
+	tinygo.org/x/tinyfs v0.1.0
+	tinygo.org/x/tinyterm v0.1.0
 )

go.sum

@@ -1,3 +1,4 @@
+github.com/bgould/http v0.0.0-20190627042742-d268792bdee7/go.mod h1:BTqvVegvwifopl4KTEDth6Zezs9eR+lCWhvGKvkxJHE=
 github.com/eclipse/paho.mqtt.golang v1.2.0 h1:1F8mhG9+aO5/xpdtFkW4SxOJB67ukuDC3t2y2qayIX0=
 github.com/eclipse/paho.mqtt.golang v1.2.0/go.mod h1:H9keYFcgq3Qr5OUJm/JZI/i6U7joQ8SYLhZwfeOo6Ts=
 github.com/frankban/quicktest v1.10.2 h1:19ARM85nVi4xH7xPXuc5eM/udya5ieh7b/Sv+d844Tk=
@@ -9,10 +10,15 @@ github.com/kr/pretty v0.2.1/go.mod h1:ipq/a2n7PKx3OHsz4KJII5eveXtPO4qwEXGdVfWzfn
 github.com/kr/pty v1.1.1/go.mod h1:pFQYn66WHrOpPYNljwOMqo10TkYh1fy3cYio2l3bCsQ=
 github.com/kr/text v0.1.0 h1:45sCR5RtlFHMR4UwH9sdQ5TC8v0qDQCHnXt+kaKSTVE=
 github.com/kr/text v0.1.0/go.mod h1:4Jbv+DJW3UT/LiOwJeYQe1efqtUx/iVham/4vfdArNI=
-github.com/tinygo-org/tinyfs v0.0.0-20210514004344-b02c062d12c9 h1:66or7MohOph3xr3gMGCXceLkd+MBoUbV/rPPjl8iQOU=
-github.com/tinygo-org/tinyfs v0.0.0-20210514004344-b02c062d12c9/go.mod h1:HGuyo42bGd1zWSuS1gwgyyjN36ZZMlEpwM0vSrglmXc=
-github.com/tinygo-org/tinyfs v0.0.0-20210514090915-924e60a7bcf8 h1:pYwuKe1XuNeJnGV1UjeZ0FhuZ5+lapIq1NUmGacbBwo=
-github.com/tinygo-org/tinyfs v0.0.0-20210514090915-924e60a7bcf8/go.mod h1:HGuyo42bGd1zWSuS1gwgyyjN36ZZMlEpwM0vSrglmXc=
+github.com/valyala/fastjson v1.6.3/go.mod h1:CLCAqky6SMuOcxStkYQvblddUtoRxhYMGLrsQns1aXY=
 golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543 h1:E7g+9GITq07hpfrRu66IVDexMakfv52eLZ2CXBWiKr4=
 golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
+tinygo.org/x/drivers v0.14.0/go.mod h1:uT2svMq3EpBZpKkGO+NQHjxjGf1f42ra4OnMMwQL2aI=
+tinygo.org/x/drivers v0.15.1/go.mod h1:uT2svMq3EpBZpKkGO+NQHjxjGf1f42ra4OnMMwQL2aI=
 tinygo.org/x/drivers v0.16.0/go.mod h1:uT2svMq3EpBZpKkGO+NQHjxjGf1f42ra4OnMMwQL2aI=
+tinygo.org/x/tinyfont v0.2.1 h1:FAaemBzw8wsfhAtG6fWW+QjyWw/K8YqEeiWo4N1pv4o=
+tinygo.org/x/tinyfont v0.2.1/go.mod h1:eLqnYSrFRjt5STxWaMeOWJTzrKhXqpWw7nU3bPfKOAM=
+tinygo.org/x/tinyfs v0.1.0 h1:yx1Tq9L60rpCm6HURo45x+Tnag+O9RGSbQfgeCb6XYU=
+tinygo.org/x/tinyfs v0.1.0/go.mod h1:ysc8Y92iHfhTXeyEM9+c7zviUQ4fN9UCFgSOFfMWv20=
+tinygo.org/x/tinyterm v0.1.0 h1:80i+j+KWoxCFa/Xfp6pWbh79x+8zUdMXC1vaKj2QhkY=
+tinygo.org/x/tinyterm v0.1.0/go.mod h1:/DDhNnGwNF2/tNgHywvyZuCGnbH3ov49Z/6e8LPLRR4=

ili9341/ili9341.go

@@ -160,6 +160,20 @@ func (d *Device) DrawRGBBitmap(x, y int16, data []uint16, w, h int16) error {
 	return nil
 }
 
+// DrawRGBBitmap8 copies an RGB bitmap to the internal buffer at given coordinates
+func (d *Device) DrawRGBBitmap8(x, y int16, data []uint8, w, h int16) error {
+	k, i := d.Size()
+	if x < 0 || y < 0 || w <= 0 || h <= 0 ||
+		x >= k || (x+w) > k || y >= i || (y+h) > i {
+		return errors.New("rectangle coordinates outside display area")
+	}
+	d.setWindow(x, y, w, h)
+	d.startWrite()
+	d.driver.write8sl(data)
+	d.endWrite()
+	return nil
+}
+
 // FillRectangle fills a rectangle at given coordinates with a color
 func (d *Device) FillRectangle(x, y, width, height int16, c color.RGBA) error {
 	k, i := d.Size()
@@ -300,7 +314,9 @@ func (d *Device) sendCommand(cmd byte, data []byte) {
 	d.dc.Low()
 	d.driver.write8(cmd)
 	d.dc.High()
-	d.driver.write8sl(data)
+	if data != nil {
+		d.driver.write8sl(data)
+	}
 	d.endWrite()
 }
 

ili9341/spi.go

@@ -0,0 +1,71 @@
+// +build !atsamd51,!atsamd21
+
+package ili9341
+
+import (
+	"machine"
+)
+
+var buf [64]byte
+
+type spiDriver struct {
+	bus machine.SPI
+}
+
+func NewSPI(bus machine.SPI, dc, cs, rst machine.Pin) *Device {
+	return &Device{
+		dc:  dc,
+		cs:  cs,
+		rst: rst,
+		rd:  machine.NoPin,
+		driver: &spiDriver{
+			bus: bus,
+		},
+	}
+}
+
+func (pd *spiDriver) configure(config *Config) {
+}
+
+func (pd *spiDriver) write8(b byte) {
+	buf[0] = b
+	pd.bus.Tx(buf[:1], nil)
+}
+
+func (pd *spiDriver) write8n(b byte, n int) {
+	buf[0] = b
+	for i := 0; i < n; i++ {
+		pd.bus.Tx(buf[:1], nil)
+	}
+}
+
+func (pd *spiDriver) write8sl(b []byte) {
+	pd.bus.Tx(b, nil)
+}
+
+func (pd *spiDriver) write16(data uint16) {
+	buf[0] = uint8(data >> 8)
+	buf[1] = uint8(data)
+	pd.bus.Tx(buf[:2], nil)
+}
+
+func (pd *spiDriver) write16n(data uint16, n int) {
+	for i := 0; i < len(buf); i += 2 {
+		buf[i] = uint8(data >> 8)
+		buf[i+1] = uint8(data)
+	}
+
+	for i := 0; i < (n >> 5); i++ {
+		pd.bus.Tx(buf[:], nil)
+	}
+
+	pd.bus.Tx(buf[:n%64], nil)
+}
+
+func (pd *spiDriver) write16sl(data []uint16) {
+	for i, c := 0, len(data); i < c; i++ {
+		buf[0] = uint8(data[i] >> 8)
+		buf[1] = uint8(data[i])
+		pd.bus.Tx(buf[:2], nil)
+	}
+}

rtl8720dn/README.md

@@ -0,0 +1,21 @@
+# RTL8720DN Driver
+
+This package provides a driver to use a separate connected WiFi processor `RTL8720DN` for TCP/UDP communication.
+At this time, only part of TCP is supported.
+
+## Using th RTL8720DN Driver
+
+For now, it is only available for the `RTL8720DN` on `Wio Terminal`.
+You can try the following command.
+
+```
+$ tinygo flash --target wioterminal --size short ./examples/rtl8720dn/webclient/
+$ tinygo flash --target wioterminal --size short ./examples/rtl8720dn/tlsclient/
+```
+
+## RTL8720DN Firmware
+
+Follow the steps below to update.
+The firmware must be version 2.1.2 or later.
+
+https://wiki.seeedstudio.com/Wio-Terminal-Network-Overview/

rtl8720dn/crc16.go

@@ -0,0 +1,35 @@
+package rtl8720dn
+
+// https://github.com/EmbeddedRPC/erpc/blob/develop/erpc_python/erpc/crc16.py
+
+const (
+	crcStart = 0xEF4A
+)
+
+var table = [256]uint16{
+	0x0000, 0x1021, 0x2042, 0x3063, 0x4084, 0x50A5, 0x60C6, 0x70E7, 0x8108, 0x9129, 0xA14A, 0xB16B, 0xC18C, 0xD1AD, 0xE1CE, 0xF1EF,
+	0x1231, 0x0210, 0x3273, 0x2252, 0x52B5, 0x4294, 0x72F7, 0x62D6, 0x9339, 0x8318, 0xB37B, 0xA35A, 0xD3BD, 0xC39C, 0xF3FF, 0xE3DE,
+	0x2462, 0x3443, 0x0420, 0x1401, 0x64E6, 0x74C7, 0x44A4, 0x5485, 0xA56A, 0xB54B, 0x8528, 0x9509, 0xE5EE, 0xF5CF, 0xC5AC, 0xD58D,
+	0x3653, 0x2672, 0x1611, 0x0630, 0x76D7, 0x66F6, 0x5695, 0x46B4, 0xB75B, 0xA77A, 0x9719, 0x8738, 0xF7DF, 0xE7FE, 0xD79D, 0xC7BC,
+	0x48C4, 0x58E5, 0x6886, 0x78A7, 0x0840, 0x1861, 0x2802, 0x3823, 0xC9CC, 0xD9ED, 0xE98E, 0xF9AF, 0x8948, 0x9969, 0xA90A, 0xB92B,
+	0x5AF5, 0x4AD4, 0x7AB7, 0x6A96, 0x1A71, 0x0A50, 0x3A33, 0x2A12, 0xDBFD, 0xCBDC, 0xFBBF, 0xEB9E, 0x9B79, 0x8B58, 0xBB3B, 0xAB1A,
+	0x6CA6, 0x7C87, 0x4CE4, 0x5CC5, 0x2C22, 0x3C03, 0x0C60, 0x1C41, 0xEDAE, 0xFD8F, 0xCDEC, 0xDDCD, 0xAD2A, 0xBD0B, 0x8D68, 0x9D49,
+	0x7E97, 0x6EB6, 0x5ED5, 0x4EF4, 0x3E13, 0x2E32, 0x1E51, 0x0E70, 0xFF9F, 0xEFBE, 0xDFDD, 0xCFFC, 0xBF1B, 0xAF3A, 0x9F59, 0x8F78,
+	0x9188, 0x81A9, 0xB1CA, 0xA1EB, 0xD10C, 0xC12D, 0xF14E, 0xE16F, 0x1080, 0x00A1, 0x30C2, 0x20E3, 0x5004, 0x4025, 0x7046, 0x6067,
+	0x83B9, 0x9398, 0xA3FB, 0xB3DA, 0xC33D, 0xD31C, 0xE37F, 0xF35E, 0x02B1, 0x1290, 0x22F3, 0x32D2, 0x4235, 0x5214, 0x6277, 0x7256,
+	0xB5EA, 0xA5CB, 0x95A8, 0x8589, 0xF56E, 0xE54F, 0xD52C, 0xC50D, 0x34E2, 0x24C3, 0x14A0, 0x0481, 0x7466, 0x6447, 0x5424, 0x4405,
+	0xA7DB, 0xB7FA, 0x8799, 0x97B8, 0xE75F, 0xF77E, 0xC71D, 0xD73C, 0x26D3, 0x36F2, 0x0691, 0x16B0, 0x6657, 0x7676, 0x4615, 0x5634,
+	0xD94C, 0xC96D, 0xF90E, 0xE92F, 0x99C8, 0x89E9, 0xB98A, 0xA9AB, 0x5844, 0x4865, 0x7806, 0x6827, 0x18C0, 0x08E1, 0x3882, 0x28A3,
+	0xCB7D, 0xDB5C, 0xEB3F, 0xFB1E, 0x8BF9, 0x9BD8, 0xABBB, 0xBB9A, 0x4A75, 0x5A54, 0x6A37, 0x7A16, 0x0AF1, 0x1AD0, 0x2AB3, 0x3A92,
+	0xFD2E, 0xED0F, 0xDD6C, 0xCD4D, 0xBDAA, 0xAD8B, 0x9DE8, 0x8DC9, 0x7C26, 0x6C07, 0x5C64, 0x4C45, 0x3CA2, 0x2C83, 0x1CE0, 0x0CC1,
+	0xEF1F, 0xFF3E, 0xCF5D, 0xDF7C, 0xAF9B, 0xBFBA, 0x8FD9, 0x9FF8, 0x6E17, 0x7E36, 0x4E55, 0x5E74, 0x2E93, 0x3EB2, 0x0ED1, 0x1EF0,
+}
+
+func computeCRC16(data []byte) uint16 {
+	crc := uint16(crcStart)
+
+	for _, d := range data {
+		crc = ((crc << 8) ^ table[((crc>>8)^uint16(d))&0xFF]) & 0xFFFF
+	}
+	return crc
+}

rtl8720dn/netdriver.go

@@ -0,0 +1,278 @@
+package rtl8720dn
+
+import (
+	"fmt"
+	"strconv"
+)
+
+// Here is the implementation of tinygo-org/x/drivers/net.DeviceDriver.
+
+func (r *RTL8720DN) GetDNS(domain string) (string, error) {
+	if r.debug {
+		fmt.Printf("GetDNS(%q)\r\n", domain)
+	}
+
+	ipaddr := [4]byte{}
+	_, err := r.Rpc_netconn_gethostbyname(domain, ipaddr[:])
+	if err != nil {
+		return "", err
+	}
+
+	ret, err := fmt.Sprintf("%d.%d.%d.%d", ipaddr[0], ipaddr[1], ipaddr[2], ipaddr[3]), nil
+	if r.debug {
+		fmt.Printf("-> %s\r\n", ret)
+		fmt.Printf("-> %02X.%02X.%02X.%02X\r\n", ipaddr[0], ipaddr[1], ipaddr[2], ipaddr[3])
+	}
+	return ret, err
+}
+
+func (r *RTL8720DN) ConnectTCPSocket(addr, port string) error {
+	if r.debug {
+		fmt.Printf("ConnectTCPSocket(%q, %q)\r\n", addr, port)
+	}
+
+	ipaddr := [4]byte{}
+	_, err := r.Rpc_netconn_gethostbyname(addr, ipaddr[:])
+	if err != nil {
+		return err
+	}
+
+	portNum, err := strconv.ParseUint(port, 0, 0)
+	if err != nil {
+		return err
+	}
+
+	socket, err := r.Rpc_lwip_socket(0x02, 0x01, 0x00)
+	if err != nil {
+		return err
+	}
+	r.socket = socket
+	r.connectionType = ConnectionTypeTCP
+
+	_, err = r.Rpc_lwip_fcntl(socket, 0x00000003, 0x00000000)
+	if err != nil {
+		return err
+	}
+
+	_, err = r.Rpc_lwip_fcntl(socket, 0x00000004, 0x00000001)
+	if err != nil {
+		return err
+	}
+
+	name := []byte{0x00, 0x02, 0x00, 0x50, 0xC0, 0xA8, 0x01, 0x76, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}
+	name[2] = byte(portNum >> 8)
+	name[3] = byte(portNum)
+	name[4] = byte(ipaddr[0])
+	name[5] = byte(ipaddr[1])
+	name[6] = byte(ipaddr[2])
+	name[7] = byte(ipaddr[3])
+
+	_, err = r.Rpc_lwip_connect(socket, name, uint32(len(name)))
+	if err != nil {
+		return err
+	}
+
+	readset := []byte{}
+	writeset := []byte{0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}
+	exceptset := []byte{}
+	timeout := []byte{}
+	_, err = r.Rpc_lwip_select(0x01, readset, writeset, exceptset, timeout)
+	if err != nil {
+		return err
+	}
+
+	optlen := uint32(4)
+	_, err = r.Rpc_lwip_getsockopt(socket, 0x00000FFF, 0x00001007, []byte{0xA5, 0xA5, 0xA5, 0xA5}, nil, optlen)
+	if err != nil {
+		return err
+	}
+
+	_, err = r.Rpc_lwip_fcntl(socket, 0x00000003, 0x00000000)
+	if err != nil {
+		return err
+	}
+
+	_, err = r.Rpc_lwip_fcntl(socket, 0x00000004, 0x00000000)
+	if err != nil {
+		return err
+	}
+
+	readset = []byte{}
+	writeset = []byte{0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}
+	exceptset = []byte{}
+	timeout = []byte{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x40, 0x42, 0x0F, 0x00, 0xFF, 0xFF, 0xFF, 0xFF}
+	_, err = r.Rpc_lwip_select(0x01, readset, writeset, exceptset, timeout)
+	if err != nil {
+		return err
+	}
+
+	return nil
+}
+
+func (r *RTL8720DN) ConnectSSLSocket(addr, port string) error {
+	if r.debug {
+		fmt.Printf("ConnectSSLSocket(%q, %q)\r\n", addr, port)
+	}
+
+	client, err := r.Rpc_wifi_ssl_client_create()
+	if err != nil {
+		return err
+	}
+	r.client = client
+	r.connectionType = ConnectionTypeTLS
+
+	err = r.Rpc_wifi_ssl_init(client)
+	if err != nil {
+		return err
+	}
+
+	err = r.Rpc_wifi_ssl_set_timeout(client, 0x0001D4C0)
+	if err != nil {
+		return err
+	}
+
+	_, err = r.Rpc_wifi_ssl_set_rootCA(client, *r.root_ca)
+	if err != nil {
+		return err
+	}
+
+	// TODO: use port
+	_, err = r.Rpc_wifi_start_ssl_client(client, addr, 443, 0x0001D4C0)
+	if err != nil {
+		return err
+	}
+
+	_, err = r.Rpc_wifi_ssl_get_socket(client)
+	if err != nil {
+		return err
+	}
+	return nil
+}
+
+func (r *RTL8720DN) ConnectUDPSocket(addr, sendport, listenport string) error {
+	if r.debug {
+		fmt.Printf("ConnectUDPSocket(%q, %q, %q)\r\n", addr, sendport, listenport)
+	}
+	fmt.Printf("not implemented yet\r\n")
+	return nil
+}
+
+func (r *RTL8720DN) DisconnectSocket() error {
+	if r.debug {
+		fmt.Printf("DisconnectSocket()\r\n")
+	}
+	switch r.connectionType {
+	case ConnectionTypeTCP:
+		_, err := r.Rpc_lwip_close(r.socket)
+		if err != nil {
+			return err
+		}
+	case ConnectionTypeTLS:
+		err := r.Rpc_wifi_stop_ssl_socket(r.client)
+		if err != nil {
+			return err
+		}
+
+		err = r.Rpc_wifi_ssl_client_destroy(r.client)
+		if err != nil {
+			return err
+		}
+	default:
+	}
+	r.connectionType = ConnectionTypeNone
+	return nil
+}
+
+func (r *RTL8720DN) StartSocketSend(size int) error {
+	if r.debug {
+		fmt.Printf("StartSocketSend(%d)\r\n", size)
+	}
+	// No implementation required
+	return nil
+}
+
+func (r *RTL8720DN) Write(b []byte) (n int, err error) {
+	if r.debug {
+		fmt.Printf("Write(%#v)\r\n", b)
+	}
+
+	switch r.connectionType {
+	case ConnectionTypeTCP:
+		sn, err := r.Rpc_lwip_send(r.socket, b, 0x00000008)
+		if err != nil {
+			return 0, err
+		}
+		n = int(sn)
+	case ConnectionTypeTLS:
+		sn, err := r.Rpc_wifi_send_ssl_data(r.client, b, uint16(len(b)))
+		if err != nil {
+			return 0, err
+		}
+		n = int(sn)
+	default:
+		return 0, nil
+	}
+	return n, nil
+}
+
+func (r *RTL8720DN) ReadSocket(b []byte) (n int, err error) {
+	if r.debug {
+		//fmt.Printf("ReadSocket(b)\r\n")
+	}
+	if r.connectionType == ConnectionTypeNone {
+		return 0, nil
+	}
+
+	switch r.connectionType {
+	case ConnectionTypeTCP:
+		nn, err := r.Rpc_lwip_recv(r.socket, b, uint32(len(b)), 0x00000008, 0x00002800)
+		if err != nil {
+			return 0, err
+		}
+
+		if nn == -1 {
+			return 0, nil
+		} else if nn == 0 {
+			return 0, r.DisconnectSocket()
+		}
+		if r.length == 0 {
+			header := httpHeader(b[:nn])
+			r.length = header.ContentLength()
+		}
+		r.length -= int(nn)
+		if r.length == 0 {
+			return int(nn), r.DisconnectSocket()
+		}
+		n = int(nn)
+	case ConnectionTypeTLS:
+		nn, err := r.Rpc_wifi_get_ssl_receive(r.client, b, int32(len(b)))
+		if err != nil {
+			return 0, err
+		}
+		if nn < 0 {
+			return 0, fmt.Errorf("error %d", n)
+		} else if nn == 0 || nn == -30848 {
+			return 0, r.DisconnectSocket()
+		}
+		n = int(nn)
+	default:
+	}
+
+	return n, nil
+}
+
+func (r *RTL8720DN) IsSocketDataAvailable() bool {
+	if r.debug {
+		fmt.Printf("IsSocketDataAvailable()\r\n")
+	}
+	fmt.Printf("not implemented yet\r\n")
+	return true
+}
+
+func (r *RTL8720DN) Response(timeout int) ([]byte, error) {
+	if r.debug {
+		fmt.Printf("Response(%d))\r\n", timeout)
+	}
+	// No implementation required
+	return nil, nil
+}

rtl8720dn/rpc_util.go

@@ -0,0 +1,105 @@
+package rtl8720dn
+
+import (
+	"fmt"
+	"io"
+	"time"
+)
+
+var (
+	headerBuf            [4]byte
+	readBuf              [4]byte
+	startWriteMessageBuf [1024]byte
+	payload              [1024 + 256]byte
+)
+
+const (
+	xVersion = 1
+)
+
+func startWriteMessage(msgType, service, requestNumber, sequence uint32) []byte {
+	startWriteMessageBuf[0] = byte(msgType)
+	startWriteMessageBuf[1] = byte(requestNumber)
+	startWriteMessageBuf[2] = byte(service)
+	startWriteMessageBuf[3] = byte(xVersion)
+
+	startWriteMessageBuf[4] = byte(sequence)
+	startWriteMessageBuf[5] = byte(sequence >> 8)
+	startWriteMessageBuf[6] = byte(sequence >> 16)
+	startWriteMessageBuf[7] = byte(sequence >> 24)
+
+	return startWriteMessageBuf[:8]
+}
+
+func (r *RTL8720DN) performRequest(msg []byte) error {
+	crc := computeCRC16(msg)
+	headerBuf[0] = byte(len(msg))
+	headerBuf[1] = byte(len(msg) >> 8)
+	headerBuf[2] = byte(crc)
+	headerBuf[3] = byte(crc >> 8)
+
+	if r.debug {
+		fmt.Printf("tx : %2d : ", len(headerBuf))
+		dumpHex(headerBuf[:])
+		fmt.Printf("\r\n")
+	}
+
+	r.port.Write(headerBuf[:])
+
+	if r.debug {
+		fmt.Printf("tx : %2d : ", len(msg))
+		dumpHex(msg)
+		fmt.Printf("\r\n")
+	}
+	r.port.Write(msg)
+
+	return nil
+}
+
+func dumpHex(b []byte) {
+	for i := range b {
+		if i == 0 {
+			fmt.Printf("%02X", b[i])
+		} else {
+			fmt.Printf(" %02X", b[i])
+		}
+	}
+}
+
+func (r *RTL8720DN) readThread() {
+	for {
+		n, _ := io.ReadFull(r.port, readBuf[:4])
+		if n == 0 {
+			continue
+		}
+
+		if r.debug {
+			fmt.Printf("rx : %2d : ", n)
+			dumpHex(readBuf[:n])
+			fmt.Printf("\r\n")
+		}
+
+		length := uint16(readBuf[0]) + uint16(readBuf[1])<<8
+		crc := uint16(readBuf[2]) + uint16(readBuf[3])<<8
+
+		n, _ = io.ReadFull(r.port, payload[:length])
+		if r.debug {
+			fmt.Printf("rx : %2d : ", length)
+			dumpHex(payload[0:n])
+			fmt.Printf("\r\n")
+		}
+
+		n = int(length)
+
+		crcNew := computeCRC16(payload[:n])
+		if g, e := crcNew, crc; g != e {
+			fmt.Printf("err CRC16: got %04X want %04X\n", g, e)
+		}
+		if payload[0] == 0x02 || payload[0] == 0x00 {
+			r.received <- true
+
+			// switch goroutine
+			time.Sleep(1)
+		}
+	}
+}

rtl8720dn/rtl8720dn.go

@@ -0,0 +1,54 @@
+package rtl8720dn
+
+import "io"
+
+type RTL8720DN struct {
+	port     io.ReadWriter
+	seq      uint64
+	received chan bool
+	debug    bool
+
+	connectionType ConnectionType
+	socket         int32
+	client         uint32
+	length         int
+	root_ca        *string
+}
+
+type ConnectionType int
+
+const (
+	ConnectionTypeNone ConnectionType = iota
+	ConnectionTypeTCP
+	ConnectionTypeUDP
+	ConnectionTypeTLS
+)
+
+func New(r io.ReadWriter) *RTL8720DN {
+	ret := &RTL8720DN{
+		port:     r,
+		seq:      1,
+		received: make(chan bool, 1),
+		debug:    false,
+	}
+
+	go ret.readThread()
+
+	return ret
+}
+
+func (r *RTL8720DN) SetSeq(s uint64) {
+	r.seq = s
+}
+
+func (r *RTL8720DN) Debug(b bool) {
+	r.debug = b
+}
+
+func (r *RTL8720DN) SetRootCA(s *string) {
+	r.root_ca = s
+}
+
+func (r *RTL8720DN) Version() (string, error) {
+	return r.Rpc_system_version()
+}

rtl8720dn/tmp.go

@@ -0,0 +1,37 @@
+package rtl8720dn
+
+// TODO: Implement these when needed
+// https://github.com/Seeed-Studio/seeed-ambd-firmware/blob/master/erpc_idl/erpc_shim/rpc_system_header.h
+
+type RPC_T_GAP_CAUSE int32
+type RPC_T_LE_KEY_ENTRY int32
+type RPC_T_APP_RESULT int32
+type RPC_T_GAP_PARAM_TYPE int32
+
+type RPC_T_LE_BOND_PARAM_TYPE int32
+type RPC_T_GAP_CFM_CAUSE int32
+type RPC_T_GAP_REMOTE_ADDR_TYPE int32
+type RPC_T_GAP_SEC_LEVEL int32
+type RPC_T_GAP_LE_PARAM_TYPE int32
+
+type RPC_T_GAP_WHITE_LIST_OP int32
+type RPC_T_GAP_RAND_ADDR_TYPE int32
+type RPC_T_GAP_IDENT_ADDR_TYPE int32
+type RPC_T_GAP_CONFIG_GATT_CCCD_NOT_CHECK int32
+type RPC_T_LE_ADV_PARAM_TYPE int32
+type RPC_T_LE_SCAN_PARAM_TYPE int32
+type RPC_T_LE_CONN_PARAM_TYPE int32
+type RPC_T_GAP_CONN_INFO int32
+
+type RPC_T_GAP_PHYS_OPTIONS int32
+type RPC_T_GAP_CONN_PARAM_TYPE int32
+type RPC_T_GAP_LE_CONN_REQ_PARAM int32
+type RPC_T_GAP_LOCAL_ADDR_TYPE int32
+type RPC_T_LOCAL_NAME int32
+type RPC_T_LOCAL_APPEARANCE int32
+type RPC_T_LE_CCCD int32
+
+type RPC_T_LE_KEY_TYPE int32
+type RPC_T_GATT_WRITE_TYPE int32
+type RPC_T_GATT_PDU_TYPE int32
+type RPC_T_SERVICE_CALLBACK_TYPE int32

rtl8720dn/util.go

@@ -0,0 +1,51 @@
+package rtl8720dn
+
+import (
+	"bytes"
+	"encoding/binary"
+	"fmt"
+	"strconv"
+	"strings"
+)
+
+type httpHeader []byte
+
+func (h httpHeader) ContentLength() int {
+	contentLength := -1
+	idx := bytes.Index(h, []byte("Content-Length: "))
+	if 0 <= idx {
+		_, err := fmt.Sscanf(string(h[idx+16:]), "%d", &contentLength)
+		if err != nil {
+			return -1
+		}
+	}
+	return contentLength
+}
+
+// TODO: IPAddress implementation should be moved under drivers/net
+// The same implementation exists in wifinina.
+type IPAddress []byte
+
+func (addr IPAddress) String() string {
+	if len(addr) < 4 {
+		return ""
+	}
+	return strconv.Itoa(int(addr[0])) + "." + strconv.Itoa(int(addr[1])) + "." + strconv.Itoa(int(addr[2])) + "." + strconv.Itoa(int(addr[3]))
+}
+
+func ParseIPv4(s string) (IPAddress, error) {
+	v := strings.Split(s, ".")
+	v0, _ := strconv.Atoi(v[0])
+	v1, _ := strconv.Atoi(v[1])
+	v2, _ := strconv.Atoi(v[2])
+	v3, _ := strconv.Atoi(v[3])
+	return IPAddress([]byte{byte(v0), byte(v1), byte(v2), byte(v3)}), nil
+}
+
+func (addr IPAddress) AsUint32() uint32 {
+	if len(addr) < 4 {
+		return 0
+	}
+	b := []byte(string(addr))
+	return binary.BigEndian.Uint32(b[0:4])
+}

rtl8720dn/wifi.go

@@ -0,0 +1,72 @@
+package rtl8720dn
+
+import (
+	"fmt"
+	"time"
+)
+
+func (r *RTL8720DN) ConnectToAP(ssid string, password string) error {
+	if len(ssid) == 0 || len(password) == 0 {
+		return fmt.Errorf("connection failed: either ssid or password not set")
+	}
+
+	_, err := r.Rpc_wifi_off()
+	if err != nil {
+		return err
+	}
+	_, err = r.Rpc_wifi_on(0x00000001)
+	if err != nil {
+		return err
+	}
+
+	_, err = r.Rpc_wifi_disconnect()
+	if err != nil {
+		return err
+	}
+
+	numTry := 5
+	securityType := uint32(0x00400004)
+	for i := 0; i < numTry; i++ {
+		ret, err := r.Rpc_wifi_connect(ssid, password, securityType, -1, 0)
+		if err != nil {
+			return err
+		}
+		if ret != 0 {
+			if i == numTry-1 {
+				return fmt.Errorf("connection failed: rpc_wifi_connect failed")
+			}
+			time.Sleep(100 * time.Millisecond)
+		} else {
+			break
+		}
+	}
+
+	_, err = r.Rpc_tcpip_adapter_dhcpc_start(0)
+	if err != nil {
+		return err
+	}
+
+	for i := 0; i < 3; i++ {
+		_, err = r.Rpc_wifi_is_connected_to_ap()
+		if err != nil {
+			return err
+		}
+		time.Sleep(1 * time.Second)
+	}
+
+	return nil
+}
+
+func (r *RTL8720DN) GetIP() (ip, subnet, gateway IPAddress, err error) {
+	ip_info := make([]byte, 12)
+	_, err = r.Rpc_tcpip_adapter_get_ip_info(0, ip_info)
+	if err != nil {
+		return nil, nil, nil, err
+	}
+
+	ip = IPAddress(ip_info[0:4])
+	subnet = IPAddress(ip_info[4:8])
+	gateway = IPAddress(ip_info[8:12])
+
+	return ip, subnet, gateway, nil
+}

version.go

@@ -2,4 +2,4 @@ package drivers
 
 // Version returns a user-readable string showing the version of the drivers package for support purposes.
 // Update this value before release of new version of software.
-const Version = "0.16.0"
+const Version = "0.17.1"

ws2812/ws2812_avr.go

@@ -7,6 +7,7 @@ package ws2812
 import (
 	"device/avr"
 	"machine"
+	"runtime/interrupt"
 )
 
 // Send a single byte using the WS2812 protocol.
@@ -17,6 +18,7 @@ func (d Device) WriteByte(c byte) error {
 	// Probably this is about pointer registers, which are very limited on AVR.
 	port, maskSet := d.Pin.PortMaskSet()
 	_, maskClear := d.Pin.PortMaskClear()
+	mask := interrupt.Disable()
 
 	switch machine.CPUFrequency() {
 	case 16e6: // 16MHz
@@ -51,8 +53,10 @@ func (d Device) WriteByte(c byte) error {
 			"maskClear": maskClear,
 			"portClear": port,
 		})
+		interrupt.Restore(mask)
 		return nil
 	default:
+		interrupt.Restore(mask)
 		return errUnknownClockSpeed
 	}
 }

ws2812/ws2812_m0_16m.go

@@ -7,6 +7,7 @@ package ws2812
 
 import (
 	"device/arm"
+	"runtime/interrupt"
 )
 
 // Send a single byte using the WS2812 protocol.
@@ -14,6 +15,7 @@ func (d Device) WriteByte(c byte) error {
 	// For the Cortex-M0 at 16MHz
 	portSet, maskSet := d.Pin.PortMaskSet()
 	portClear, maskClear := d.Pin.PortMaskClear()
+	mask := interrupt.Disable()
 
 	// See:
 	// https://wp.josh.com/2014/05/13/ws2812-neopixels-are-not-so-finicky-once-you-get-to-know-them/
@@ -48,5 +50,6 @@ func (d Device) WriteByte(c byte) error {
 		"maskClear": maskClear,
 		"portClear": portClear,
 	})
+	interrupt.Restore(mask)
 	return nil
 }

ws2812/ws2812_m0_48m.go

@@ -7,6 +7,7 @@ package ws2812
 
 import (
 	"device/arm"
+	"runtime/interrupt"
 )
 
 // Send a single byte using the WS2812 protocol.
@@ -14,6 +15,7 @@ func (d Device) WriteByte(c byte) error {
 	// For the Cortex-M0 at 48MHz
 	portSet, maskSet := d.Pin.PortMaskSet()
 	portClear, maskClear := d.Pin.PortMaskClear()
+	mask := interrupt.Disable()
 
 	// See:
 	// https://wp.josh.com/2014/05/13/ws2812-neopixels-are-not-so-finicky-once-you-get-to-know-them/
@@ -77,5 +79,6 @@ func (d Device) WriteByte(c byte) error {
 		"maskClear": maskClear,
 		"portClear": portClear,
 	})
+	interrupt.Restore(mask)
 	return nil
 }

ws2812/ws2812_m4_120m.go

@@ -8,6 +8,7 @@ package ws2812
 
 import (
 	"device/arm"
+	"runtime/interrupt"
 )
 
 // Send a single byte using the WS2812 protocol.
@@ -15,6 +16,7 @@ func (d Device) WriteByte(c byte) error {
 	// For the Cortex-M4 at 120MHz
 	portSet, maskSet := d.Pin.PortMaskSet()
 	portClear, maskClear := d.Pin.PortMaskClear()
+	mask := interrupt.Disable()
 
 	// See:
 	// https://wp.josh.com/2014/05/13/ws2812-neopixels-are-not-so-finicky-once-you-get-to-know-them/
@@ -169,5 +171,6 @@ func (d Device) WriteByte(c byte) error {
 		"maskClear": maskClear,
 		"portClear": portClear,
 	})
+	interrupt.Restore(mask)
 	return nil
 }

ws2812/ws2812_m4_64m.go

@@ -1,4 +1,4 @@
-// +build nrf52 nrf52840
+// +build nrf52 nrf52840 nrf52833
 
 package ws2812
 
@@ -7,6 +7,7 @@ package ws2812
 
 import (
 	"device/arm"
+	"runtime/interrupt"
 )
 
 // Send a single byte using the WS2812 protocol.
@@ -14,6 +15,7 @@ func (d Device) WriteByte(c byte) error {
 	// For the Cortex-M4 at 64MHz
 	portSet, maskSet := d.Pin.PortMaskSet()
 	portClear, maskClear := d.Pin.PortMaskClear()
+	mask := interrupt.Disable()
 
 	// See:
 	// https://wp.josh.com/2014/05/13/ws2812-neopixels-are-not-so-finicky-once-you-get-to-know-them/
@@ -106,5 +108,6 @@ func (d Device) WriteByte(c byte) error {
 		"maskClear": maskClear,
 		"portClear": portClear,
 	})
+	interrupt.Restore(mask)
 	return nil
 }

ws2812/ws2812_xtensa.go

@@ -5,12 +5,14 @@ package ws2812
 import (
 	"device"
 	"machine"
+	"runtime/interrupt"
 	"unsafe"
 )
 
 func (d Device) WriteByte(c byte) error {
 	portSet, maskSet := d.Pin.PortMaskSet()
 	portClear, maskClear := d.Pin.PortMaskClear()
+	mask := interrupt.Disable()
 
 	switch machine.CPUFrequency() {
 	case 160e6: // 160MHz
@@ -220,6 +222,7 @@ func (d Device) WriteByte(c byte) error {
 			"maskClear": maskClear,
 			"portClear": uintptr(unsafe.Pointer(portClear)),
 		})
+		interrupt.Restore(mask)
 		return nil
 	case 80e6: // 80MHz
 		// See docs for 160MHz.
@@ -336,8 +339,10 @@ func (d Device) WriteByte(c byte) error {
 			"maskClear": maskClear,
 			"portClear": uintptr(unsafe.Pointer(portClear)),
 		})
+		interrupt.Restore(mask)
 		return nil
 	default:
+		interrupt.Restore(mask)
 		return errUnknownClockSpeed
 	}
 }