WIP: net/http RoundTripper

2026-07-28 03:28:41 +00:00 · 2022-12-08 22:28:27 +09:00
93 changed files with 212 additions and 837 deletions
@@ -112,7 +112,7 @@ The following 90 devices are supported.
 | [P1AM-100 Base Controller](https://facts-engineering.github.io/modules/P1AM-100/P1AM-100.html)                                                                                                      | SPI |
 | [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 |
-| [QMI8658C accelerometer/gyroscope](https://www.qstcorp.com/upload/pdf/202202/%EF%BC%88%E5%B7%B2%E4%BC%A0%EF%BC%89QMI8658C%20datasheet%20rev%200.9.pdf)                                              | I2C |
+| [QMI8658C accelerometer/gyroscope](https://www.qstcorp.com/upload/pdf/202202/%EF%BC%88%E5%B7%B2%E4%BC%A0%EF%BC%89QMI8658C%20datasheet%20rev%200.9.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 |
 | [SCD4x CO2 Sensor](https://sensirion.com/media/documents/C4B87CE6/627C2DCD/CD_DS_SCD40_SCD41_Datasheet_D1.pdf)                                                                                      | I2C |
@@ -141,10 +141,10 @@ The following 90 devices are supported.
 | [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 |
+| [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-connect/sx1261)                                                                                                             | SPI |
+| [Semtech SX126x Lora](https://www.semtech.com/products/wireless-rf/lora-transceiv-ers/sx1261)                                                                                                       | SPI |
 | [SSD1289 TFT color display](http://aitendo3.sakura.ne.jp/aitendo_data/product_img/lcd/tft2/M032C1289TP/3.2-SSD1289.pdf)                                                                             | GPIO |

 ## Contributing
@@ -1,4 +1,5 @@
 //go:build !nano_33_ble
+// +build !nano_33_ble

 package apds9960

@@ -1,4 +1,5 @@
 //go:build nano_33_ble
+// +build nano_33_ble

 package apds9960

@@ -7,7 +7,6 @@ package bme280

 import (
 	"math"
-	"time"

 	"tinygo.org/x/drivers"
 )
@@ -34,27 +33,11 @@ type calibrationCoefficients struct {
 	h6 int8
 }

-type Oversampling byte
-type Mode byte
-type FilterCoefficient byte
-type Period byte
-
-// Config contains settings for filtering, sampling, and modes of operation
-type Config struct {
-	Pressure    Oversampling
-	Temperature Oversampling
-	Humidity    Oversampling
-	Period      Period
-	Mode        Mode
-	IIR         FilterCoefficient
-}
-
 // Device wraps an I2C connection to a BME280 device.
 type Device struct {
 	bus                     drivers.I2C
 	Address                 uint16
 	calibrationCoefficients calibrationCoefficients
-	Config                  Config
 }

 // New creates a new BME280 connection. The I2C bus must already be
@@ -68,34 +51,9 @@ func New(bus drivers.I2C) Device {
 	}
 }

-// ConfigureWithSettings sets up the device for communication and
-// read the calibration coefficients.
-//
-// The default configuration is the Indoor Navigation settings
-// from the BME280 datasheet.
+// Configure sets up the device for communication and
+// read the calibration coefficientes.
 func (d *Device) Configure() {
-	d.ConfigureWithSettings(Config{})
-}
-
-// ConfigureWithSettings sets up the device for communication and
-// read the calibration coefficients.
-//
-// The default configuration if config is left at defaults is
-// the Indoor Navigation settings from the BME280 datasheet.
-func (d *Device) ConfigureWithSettings(config Config) {
-	d.Config = config
-
-	// If config is not initialized, use Indoor Navigation defaults.
-	if d.Config == (Config{}) {
-		d.Config = Config{
-			Mode:        ModeNormal,
-			Period:      Period0_5ms,
-			Temperature: Sampling2X,
-			Humidity:    Sampling1X,
-			Pressure:    Sampling16X,
-			IIR:         Coeff16,
-		}
-	}

 	var data [24]byte
 	err := d.bus.ReadRegister(uint8(d.Address), REG_CALIBRATION, data[:])
@@ -135,18 +93,10 @@ func (d *Device) ConfigureWithSettings(config Config) {
 	d.calibrationCoefficients.h4 = 0 + (int16(h2lsb[3]) << 4) | (int16(h2lsb[4] & 0x0F))
 	d.calibrationCoefficients.h5 = 0 + (int16(h2lsb[5]) << 4) | (int16(h2lsb[4]) >> 4)

-	d.Reset()
+	d.bus.WriteRegister(uint8(d.Address), CTRL_HUMIDITY_ADDR, []byte{0x3f})
+	d.bus.WriteRegister(uint8(d.Address), CTRL_MEAS_ADDR, []byte{0xB7})
+	d.bus.WriteRegister(uint8(d.Address), CTRL_CONFIG, []byte{0x00})

-	d.bus.WriteRegister(uint8(d.Address), CTRL_CONFIG, []byte{byte(d.Config.Period<<5) | byte(d.Config.IIR<<2)})
-	d.bus.WriteRegister(uint8(d.Address), CTRL_HUMIDITY_ADDR, []byte{byte(d.Config.Humidity)})
-
-	// Normal mode, start measuring now
-	if d.Config.Mode == ModeNormal {
-		d.bus.WriteRegister(uint8(d.Address), CTRL_MEAS_ADDR, []byte{
-			byte(d.Config.Temperature<<5) |
-				byte(d.Config.Pressure<<2) |
-				byte(d.Config.Mode)})
-	}
 }

 // Connected returns whether a BME280 has been found.
@@ -162,20 +112,6 @@ func (d *Device) Reset() {
 	d.bus.WriteRegister(uint8(d.Address), CMD_RESET, []byte{0xB6})
 }

-// SetMode can set the device to Sleep, Normal or Forced mode
-//
-// Calling this method is optional, Configure can be used to set the
-// initial mode if no mode change is desired.  This method is most
-// useful to switch between Sleep and Normal modes.
-func (d *Device) SetMode(mode Mode) {
-	d.Config.Mode = mode
-
-	d.bus.WriteRegister(uint8(d.Address), CTRL_MEAS_ADDR, []byte{
-		byte(d.Config.Temperature<<5) |
-			byte(d.Config.Pressure<<2) |
-			byte(d.Config.Mode)})
-}
-
 // ReadTemperature returns the temperature in celsius milli degrees (°C/1000)
 func (d *Device) ReadTemperature() (int32, error) {
 	data, err := d.readData()
@@ -250,16 +186,6 @@ func readIntLE(msb byte, lsb byte) int16 {
 // readData does a burst read from 0xF7 to 0xF0 according to the datasheet
 // resulting in an slice with 8 bytes 0-2 = pressure / 3-5 = temperature / 6-7 = humidity
 func (d *Device) readData() (data [8]byte, err error) {
-	if d.Config.Mode == ModeForced {
-		// Write the CTRL_MEAS register to trigger a measurement
-		d.bus.WriteRegister(uint8(d.Address), CTRL_MEAS_ADDR, []byte{
-			byte(d.Config.Temperature<<5) |
-				byte(d.Config.Pressure<<2) |
-				byte(d.Config.Mode)})
-
-		time.Sleep(d.measurementDelay())
-	}
-
 	err = d.bus.ReadRegister(uint8(d.Address), REG_PRESSURE, data[:])
 	if err != nil {
 		println(err)
@@ -330,39 +256,3 @@ func (d *Device) calculateHumidity(data [8]byte, tFine int32) int32 {
 	return int32(100 * h)

 }
-
-// measurementDelay returns how much time each measurement will take
-// on the device.
-//
-// This is used in forced mode to wait until a measurement is complete.
-func (d *Device) measurementDelay() time.Duration {
-	const MeasOffset = 1250
-	const MeasDur = 2300
-	const HumMeasOffset = 575
-	const MeasScalingFactor = 1000
-
-	// delay is based on over-sampling rate - this table converts from
-	// setting to number samples
-	sampleRateConv := []int{0, 1, 2, 4, 8, 16}
-
-	tempOsr := 16
-	if d.Config.Temperature <= Sampling16X {
-		tempOsr = sampleRateConv[d.Config.Temperature]
-	}
-
-	presOsr := 16
-	if d.Config.Temperature <= Sampling16X {
-		presOsr = sampleRateConv[d.Config.Pressure]
-	}
-
-	humOsr := 16
-	if d.Config.Temperature <= Sampling16X {
-		humOsr = sampleRateConv[d.Config.Humidity]
-	}
-
-	max_delay := ((MeasOffset + (MeasDur * tempOsr) +
-		((MeasDur * presOsr) + HumMeasOffset) +
-		((MeasDur * humOsr) + HumMeasOffset)) / MeasScalingFactor)
-
-	return time.Duration(max_delay) * time.Millisecond
-}
@@ -20,50 +20,6 @@ const (
 	CHIP_ID  = 0x60
 )

-// Increasing sampling rate increases precision but also the wait time for measurements. The datasheet has a table of
-// suggested values for oversampling, output data rates, and iir filter coefficients by use case.
-const (
-	SamplingOff Oversampling = iota
-	Sampling1X
-	Sampling2X
-	Sampling4X
-	Sampling8X
-	Sampling16X
-)
-
-// In normal mode (the default) the sensor takes masurements periodically.  In forced
-// mode, the sensor takes a measurement only when requested.
-//
-// For use-cases with infrequent sampling, forced mode is more power efficient.
-const (
-	ModeNormal Mode = 0x03
-	ModeForced Mode = 0x01
-	ModeSleep  Mode = 0x00
-)
-
-// IIR filter coefficients, higher values means steadier measurements but slower reaction times
-const (
-	Coeff0 FilterCoefficient = iota
-	Coeff2
-	Coeff4
-	Coeff8
-	Coeff16
-)
-
-// Period of standby in normal mode which controls how often measurements are taken
-//
-// Note Period10ms and Period20ms are out of sequence, but are per the datasheet
-const (
-	Period0_5ms  Period = 0b000
-	Period62_5ms        = 0b001
-	Period125ms         = 0b010
-	Period250ms         = 0b011
-	Period500ms         = 0b100
-	Period1000ms        = 0b101
-	Period10ms          = 0b110
-	Period20ms          = 0b111
-)
-
 const (
 	SEALEVEL_PRESSURE float32 = 1013.25 // in hPa
 )
@@ -54,12 +54,6 @@ func (l *Device) Tone(hz, duration float64) (err error) {

 	tempo := ((60 / l.BPM) * (duration * 1000))

-	// no tone during rest, just let the duration pass.
-	if hz == Rest {
-		time.Sleep(time.Duration(tempo) * time.Millisecond)
-		return
-	}
-
 	for i := 0.0; i < tempo*1000; i += tone * 2.0 {
 		if err = l.On(); err != nil {
 			return
@@ -1,9 +1,9 @@
 package buzzer

 const (
-	Whole   = 4.0
-	Half    = 2.0
-	Quarter = 1.0
+	Whole   = 4
+	Half    = 2
+	Quarter = 1
 	Eighth  = 0.500
 )

@@ -1,4 +1,5 @@
 //go:build tinygo
+// +build tinygo

 // Package dht provides a driver for DHTXX family temperature and humidity sensors.
 //
@@ -1,4 +1,5 @@
 //go:build mimxrt1062 || stm32f405 || atsamd51 || stm32f103xx || k210 || stm32f407
+// +build mimxrt1062 stm32f405 atsamd51 stm32f103xx k210 stm32f407

 package dht // import "tinygo.org/x/drivers/dht"

@@ -1,4 +1,5 @@
 //go:build !mimxrt1062 && !stm32f405 && !atsamd51 && !stm32f103xx && !k210 && !stm32f407
+// +build !mimxrt1062,!stm32f405,!atsamd51,!stm32f103xx,!k210,!stm32f407

 package dht // import "tinygo.org/x/drivers/dht"

@@ -1,4 +1,5 @@
 //go:build tinygo
+// +build tinygo

 // Package dht provides a driver for DHTXX family temperature and humidity sensors.
 //
@@ -10,7 +11,6 @@ package dht // import "tinygo.org/x/drivers/dht"

 import (
 	"machine"
-	"runtime/interrupt"
 	"time"
 )

@@ -160,8 +160,8 @@ func (t *device) read() error {
 // interrupts
 func receiveSignals(pin machine.Pin, result []counter) {
 	i := uint8(0)
-	mask := interrupt.Disable()
-	defer interrupt.Restore(mask)
+	machine.UART1.Interrupt.Disable()
+	defer machine.UART1.Interrupt.Enable()
 	for ; i < 40; i++ {
 		result[i*2] = expectChange(pin, false)
 		result[i*2+1] = expectChange(pin, true)
@@ -1,4 +1,5 @@
 //go:build tinygo
+// +build tinygo

 // Package dht provides a driver for DHTXX family temperature and humidity sensors.
 //
@@ -1,4 +1,5 @@
 //go:build tinygo
+// +build tinygo

 package dht // import "tinygo.org/x/drivers/dht"

@@ -1,4 +1,5 @@
 //go:build m5stack_core2
+// +build m5stack_core2

 package main

@@ -1,4 +1,5 @@
 //go:build m5stack_core2
+// +build m5stack_core2

 package main

@@ -1,4 +1,5 @@
 //go:build atsamd21
+// +build atsamd21

 package initdisplay

@@ -1,4 +1,5 @@
 //go:build feather_m0 || feather_m4 || feather_m4_can || feather_nrf52840 || feather_nrf52840_sense || feather_stm32f405 || feather_rp2040
+// +build feather_m0 feather_m4 feather_m4_can feather_nrf52840 feather_nrf52840_sense feather_stm32f405 feather_rp2040

 package initdisplay

@@ -1,4 +1,5 @@
 //go:build m5stack
+// +build m5stack

 package initdisplay

@@ -1,4 +1,5 @@
 //go:build m5stack_core2
+// +build m5stack_core2

 package initdisplay

@@ -1,4 +1,5 @@
 //go:build pyportal
+// +build pyportal

 package initdisplay

@@ -1,4 +1,5 @@
 //go:build wioterminal
+// +build wioterminal

 package initdisplay

@@ -100,7 +100,9 @@ func getCurrentTime(conn *net.UDPSerialConn) (time.Time, error) {
 		} else if n == 0 {
 			continue // no packet received yet
 		} else if n != NTP_PACKET_SIZE {
-			return time.Time{}, fmt.Errorf("expected NTP packet size of %d: %d", NTP_PACKET_SIZE, n)
+			if n != NTP_PACKET_SIZE {
+				return time.Time{}, fmt.Errorf("expected NTP packet size of %d: %d", NTP_PACKET_SIZE, n)
+			}
 		}
 		return parseNTPpacket(), nil
 	}
@@ -1,4 +1,5 @@
 //go:build feather_m4 || feather_m4_can || feather_nrf52840
+// +build feather_m4 feather_m4_can feather_nrf52840

 package main

@@ -1,4 +1,5 @@
 //go:build grandcentral_m4
+// +build grandcentral_m4

 package main

@@ -1,4 +1,5 @@
 //go:build atsamd21 && !p1am_100
+// +build atsamd21,!p1am_100

 package main

@@ -1,4 +1,5 @@
 //go:build p1am_100
+// +build p1am_100

 package main

@@ -1,4 +1,5 @@
 //go:build pygamer
+// +build pygamer

 package main

@@ -1,4 +1,5 @@
 //go:build pyportal
+// +build pyportal

 package main

@@ -1,4 +1,5 @@
 //go:build thingplus_rp2040
+// +build thingplus_rp2040

 package main

@@ -1,4 +1,5 @@
 //go:build wioterminal
+// +build wioterminal

 package main

@@ -1,4 +1,5 @@
 //go:build tinygo
+// +build tinygo

 package console

@@ -1,4 +1,5 @@
 //go:build feather_m4 || feather_m4_can || feather_nrf52840
+// +build feather_m4 feather_m4_can feather_nrf52840

 package main

@@ -1,4 +1,5 @@
 //go:build grandcentral_m4
+// +build grandcentral_m4

 package main

@@ -1,4 +1,5 @@
 //go:build atsamd21 && !p1am_100
+// +build atsamd21,!p1am_100

 package main

@@ -1,4 +1,5 @@
 //go:build p1am_100
+// +build p1am_100

 package main

@@ -1,4 +1,5 @@
 //go:build pygamer
+// +build pygamer

 package main

@@ -1,4 +1,5 @@
 //go:build pyportal
+// +build pyportal

 package main

@@ -1,4 +1,5 @@
 //go:build thingplus_rp2040
+// +build thingplus_rp2040

 package main

@@ -1,4 +1,5 @@
 //go:build wioterminal
+// +build wioterminal

 package main

@@ -1,4 +1,5 @@
 //go:build gnse
+// +build gnse

 /*
 Generic Node Sensor Edition
@@ -1,4 +1,5 @@
 //go:build lorae5
+// +build lorae5

 package radio

@@ -1,4 +1,5 @@
 //go:build nucleowl55jc
+// +build nucleowl55jc

 /*
 	Nucleo WL55JC1
@@ -1,4 +1,5 @@
 //go:build espat
+// +build espat

 package main

@@ -1,4 +1,5 @@
 //go:build rtl8720dn
+// +build rtl8720dn

 package main

@@ -1,4 +1,5 @@
 //go:build wifinina
+// +build wifinina

 package main

@@ -111,7 +111,9 @@ func getCurrentTime(conn *net.UDPSerialConn) (time.Time, error) {
 		} else if n == 0 {
 			continue // no packet received yet
 		} else if n != NTP_PACKET_SIZE {
-			return time.Time{}, fmt.Errorf("expected NTP packet size of %d: %d", NTP_PACKET_SIZE, n)
+			if n != NTP_PACKET_SIZE {
+				return time.Time{}, fmt.Errorf("expected NTP packet size of %d: %d", NTP_PACKET_SIZE, n)
+			}
 		}
 		return parseNTPpacket(), nil
 	}
@@ -1,4 +1,5 @@
 //go:build nano_rp2040
+// +build nano_rp2040

 // This examples shows how to control RGB LED connected to
 // NINA-W102 chip on Arduino Nano RP2040 Connect board
@@ -1,209 +0,0 @@
-package main
-
-import (
-	"fmt"
-	"machine"
-	"strconv"
-	"time"
-
-	"tinygo.org/x/drivers/net/http"
-	"tinygo.org/x/drivers/wifinina"
-)
-
-// You can override the settings with the init() in another source code:
-//
-// func init() {
-//    ssid = "your-ssid"
-//    pass = "your-password"
-// }
-//
-// Or use -ldflags option on tinygo command to set at compile-time:
-//
-// tinygo flash ... -ldflags '-X "main.ssid=xxx" -X "main.pass=xxx"' ...
-//
-
-var (
-	ssid string
-	pass string
-)
-
-var led = machine.LED
-
-func main() {
-	led.Configure(machine.PinConfig{Mode: machine.PinOutput})
-
-	err := run()
-	for err != nil {
-		fmt.Printf("error: %s\r\n", err.Error())
-		time.Sleep(5 * time.Second)
-	}
-}
-
-func run() error {
-
-	spi := machine.NINA_SPI
-	spi.Configure(machine.SPIConfig{
-		Frequency: 8 * 1e6,
-		SDO:       machine.NINA_SDO,
-		SDI:       machine.NINA_SDI,
-		SCK:       machine.NINA_SCK,
-	})
-
-	adaptor := wifinina.New(spi,
-		machine.NINA_CS,
-		machine.NINA_ACK,
-		machine.NINA_GPIO0,
-		machine.NINA_RESETN)
-	adaptor.Configure()
-
-	time.Sleep(2 * time.Second)
-	println("Connecting to " + ssid)
-	err := adaptor.ConnectToAccessPoint(ssid, pass, 10*time.Second)
-	if err != nil {
-		return err
-	}
-
-	println("Connected.")
-
-	time.Sleep(2 * time.Second)
-	ip, subnet, gateway, err := adaptor.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)
-
-	http.UseDriver(adaptor)
-
-	http.HandleFunc("/", root)
-	http.HandleFunc("/hello", hello)
-	http.HandleFunc("/cnt", cnt)
-	http.HandleFunc("/6", sixlines)
-	http.HandleFunc("/off", LED_OFF)
-	http.HandleFunc("/on", LED_ON)
-
-	return http.ListenAndServe(":80", nil)
-}
-
-func root(w http.ResponseWriter, r *http.Request) {
-	access := 1
-
-	cookie, err := r.Cookie("access")
-	if err != nil {
-		if err == http.ErrNoCookie {
-			cookie = &http.Cookie{
-				Name:  "access",
-				Value: "1",
-			}
-		} else {
-			http.Error(w, fmt.Sprintf("%s", err.Error()), http.StatusBadRequest)
-			return
-		}
-	} else {
-		v, err := strconv.ParseInt(cookie.Value, 10, 0)
-		if err != nil {
-			http.Error(w, fmt.Sprintf("invalid cookie.Value : %s", cookie.Value), http.StatusBadRequest)
-			return
-		}
-		cookie.Value = fmt.Sprintf("%d", v+1)
-		access = int(v) + 1
-	}
-	http.SetCookie(w, cookie)
-	w.WriteHeader(http.StatusOK)
-
-	fmt.Fprintf(w, `
-<html>
-<head>
-    <title>TinyGo HTTP Server</title>
-    <script language="javascript" type="text/javascript">
-        var counter = 0
-        function ledOn() { fetch("/on"); }
-        function ledOff() { fetch("/off"); }
-        function fetchCnt() { fetch("/cnt").then(response => response.json()).then(json => { counter = json.cnt; cnt.innerHTML = counter; }); }
-        function incrCnt() { counter = counter + 1; fetch("/cnt?cnt=" + counter, { method: 'POST' }).then(response => response.json()).then(json => { counter = json.cnt; cnt.innerHTML = counter; }); }
-        function setCnt() { fetch("/cnt", {
-            method: "POST",
-            body: "cnt=" + document.getElementsByName("cnt")[0].value,
-            headers: { 'Content-Type': 'application/x-www-form-urlencoded' },
-        }).then(response => response.json()).then(json => { counter = json.cnt; cnt.innerHTML = counter; }); return false; }
-        function onLoad() { fetchCnt(); }
-    </script>
-</head>
-<body onLoad="onLoad()">
-    <h5>TinyGo HTTP Server</h5>
-
-    <p>
-        access: %d
-    </p>
-
-    <a href="/hello">/hello</a><br>
-    <a href="/6">/6</a><br>
-
-    <p>
-        LED<br>
-        <a href="javascript:ledOn();">/on</a><br>
-        <a href="javascript:ledOff();">/off</a><br>
-    </p>
-
-
-    <p>
-        <a href="/cnt">/cnt</a><br>
-        cnt: <span id="cnt"></span><br>
-        <a href="javascript:incrCnt()">incrCnt()</a><br>
-        <form id="form1" style="display: inline" onSubmit="return setCnt()">
-        <input type="text" name="cnt">
-        <input type="button" value="set cnt", onClick="setCnt()">
-        </form>
-    </p>
-</body>
-</html>
-    `, access)
-}
-
-func sixlines(w http.ResponseWriter, r *http.Request) {
-	// https://fukuno.jig.jp/3267
-	fmt.Fprint(w, `<body onload='onkeydown=e=>K=parseInt(e.key[5]||6,28)/3-8;Z=X=[B=A=12];Y=_=>`+
-		`{for(C=[q=c=i=4];f=i--*K;c-=!Z[h+(K+6?p+K:C[i]=p*A-(p/9|0)*145)])p=B[i];for(c?0:K+6?h+=K:B=C;`+
-		`i=K=q--;f+=Z[A+p])X[p=h+B[q]]=1;h+=A;if(f|B)for(Z=X,X=[l=228],B=[[-7,-20,6,h=17,-9,3,3][t=++t%7]-4,0,1,t-6?-A:2];l--;)`+
-		`for(l%A?l-=l%A*!Z[l]:(P++,c=l+=A);--c>A;)Z[c]=Z[c-A];for(S="";i<240;S+=X[i]|(X[i]=Z[i]|=++i%A<2|i>228)?i%A?"■":"■<br>":"　");`+
-		`D.innerHTML=S+P;setTimeout(Y,i-P)};Y(h=K=t=P=0)'id=D>`)
-}
-
-func LED_ON(w http.ResponseWriter, r *http.Request) {
-	led.High()
-	w.Header().Set(`Content-Type`, `text/plain; charset=UTF-8`)
-	fmt.Fprintf(w, "led.High()")
-}
-
-func LED_OFF(w http.ResponseWriter, r *http.Request) {
-	led.Low()
-	w.Header().Set(`Content-Type`, `text/plain; charset=UTF-8`)
-	fmt.Fprintf(w, "led.Low()")
-}
-
-func hello(w http.ResponseWriter, r *http.Request) {
-	w.Header().Set(`Content-Type`, `text/plain; charset=UTF-8`)
-	fmt.Fprintf(w, "hello")
-}
-
-var counter int
-
-func cnt(w http.ResponseWriter, r *http.Request) {
-	r.ParseForm()
-	if r.Method == "POST" {
-		c := r.Form.Get("cnt")
-		if c != "" {
-			i64, _ := strconv.ParseInt(c, 0, 0)
-			counter = int(i64)
-		}
-	}
-
-	w.Header().Set(`Content-Type`, `application/json`)
-	fmt.Fprintf(w, `{"cnt": %d}`, counter)
-}
-
-func message(msg string) {
-	println(msg, "\r")
-}
@@ -1,4 +1,5 @@
 //go:build arduino
+// +build arduino

 package main

@@ -1,4 +1,5 @@
 //go:build digispark
+// +build digispark

 package main

@@ -1,4 +1,5 @@
 //go:build !digispark && !arduino && !qtpy && !m5stamp_c3 && !thingplus_rp2040
+// +build !digispark,!arduino,!qtpy,!m5stamp_c3,!thingplus_rp2040

 package main

@@ -1,4 +1,5 @@
 //go:build qtpy || m5stamp_c3
+// +build qtpy m5stamp_c3

 package main

@@ -1,4 +1,5 @@
 //go:build qtpy
+// +build qtpy

 package main

@@ -1,4 +1,5 @@
 //go:build thingplus_rp2040
+// +build thingplus_rp2040

 package main

@@ -1,4 +1,5 @@
 //go:build atsamd51
+// +build atsamd51

 package flash

@@ -1,4 +1,5 @@
 //go:build !nano_33_ble
+// +build !nano_33_ble

 package hts221

@@ -1,4 +1,5 @@
 //go:build nano_33_ble
+// +build nano_33_ble

 package hts221

@@ -1,4 +1,5 @@
 //go:build atsamd51 || atsame5x
+// +build atsamd51 atsame5x

 package i2csoft

@@ -1,4 +1,5 @@
 //go:build esp32
+// +build esp32

 package i2csoft

@@ -1,4 +1,5 @@
 //go:build nrf52840
+// +build nrf52840

 package i2csoft

@@ -1,4 +1,5 @@
 //go:build !esp32 && !atsamd51 && !atsame5x && !stm32f4 && !rp2040 && !nrf52840
+// +build !esp32,!atsamd51,!atsame5x,!stm32f4,!rp2040,!nrf52840

 package i2csoft

@@ -1,4 +1,5 @@
 //go:build rp2040
+// +build rp2040

 package i2csoft

@@ -1,4 +1,5 @@
 //go:build stm32f4
+// +build stm32f4

 package i2csoft

@@ -1,4 +1,5 @@
 //go:build atsamd51
+// +build atsamd51

 package ili9341

@@ -1,4 +1,5 @@
 //go:build !atsamd51 && !atsame5x && !atsamd21
+// +build !atsamd51,!atsame5x,!atsamd21

 package ili9341

@@ -1,4 +1,5 @@
 //go:build atsamd21
+// +build atsamd21

 package ili9341

@@ -1,4 +1,5 @@
 //go:build atsamd51 || atsame5x
+// +build atsamd51 atsame5x

 package ili9341

@@ -3,6 +3,7 @@
 // license that can be found in the LICENSE file.

 //go:build ignore
+// +build ignore

 package main

@@ -3,6 +3,7 @@
 // license that can be found in the LICENSE file.

 //go:build gofuzz
+// +build gofuzz

 package png

@@ -1,4 +1,5 @@
 //go:build !nano_33_ble
+// +build !nano_33_ble

 package lps22hb

@@ -1,4 +1,5 @@
 //go:build nano_33_ble
+// +build nano_33_ble

 package lps22hb

@@ -1,4 +1,5 @@
 //go:build !xiao_ble
+// +build !xiao_ble

 package lsm6ds3tr

@@ -1,4 +1,5 @@
 //go:build xiao_ble
+// +build xiao_ble

 package lsm6ds3tr

@@ -1,4 +1,5 @@
 //go:build !nano_33_ble
+// +build !nano_33_ble

 package lsm9ds1

@@ -1,4 +1,5 @@
 //go:build nano_33_ble
+// +build nano_33_ble

 // Nano 33 BLE [Sense] has LSM9DS1 unit on-board.
 // This custom Configure function powers unit up
@@ -1,4 +1,5 @@
 //go:build microbit
+// +build microbit

 // Package microbitmatrix implements a driver for the BBC micro:bit's LED matrix.
 //
@@ -1,4 +1,5 @@
 //go:build microbit_v2
+// +build microbit_v2

 // Package microbitmatrix implements a driver for the BBC micro:bit version 2 LED matrix.
 //
@@ -87,7 +87,9 @@ type Client struct {
 }

 // DefaultClient is the default Client and is used by Get, Head, and Post.
-var DefaultClient = &Client{}
+var DefaultClient = &Client{
+	Transport: DefaultTransport,
+}

 // RoundTripper is an interface representing the ability to execute a
 // single HTTP transaction, obtaining the Response for a given Request.
@@ -5,7 +5,6 @@ import (
 	"bytes"
 	"fmt"
 	"io"
-	"net/textproto"
 	"strconv"
 	"strings"
 	"time"
@@ -27,11 +26,7 @@ func (c *Client) Do(req *Request) (*Response, error) {
 		}
 	}

-	transport := c.Transport
-	if transport == nil {
-		transport = DefaultTransport
-	}
-	res, err := transport.RoundTrip(req)
+	res, err := c.Transport.RoundTrip(req)

 	if c.Jar != nil {
 		if rc := res.Cookies(); len(rc) > 0 {
@@ -202,123 +197,122 @@ func (t *Transport) doResp(conn net.Conn, req *Request) (*Response, error) {
 		Header: map[string][]string{},
 	}

-	br := bufio.NewReader(conn)
-	tp := textproto.NewReader(br)
-
-	for {
-		line, err := tp.ReadLine()
-		if err != nil {
-			if err == io.ErrNoProgress {
-				// default: no timeout
-				continue
-			}
-			conn.Close()
-			return nil, err
-		}
-
-		status := strings.SplitN(line, " ", 2)
-		if len(status) != 2 {
-			conn.Close()
-			return nil, fmt.Errorf("invalid status : %q", line)
-		}
-		resp.Proto = status[0]
-		fmt.Sscanf(status[0], "HTTP/%d.%d", &resp.ProtoMajor, &resp.ProtoMinor)
-
-		resp.Status = status[1]
-		fmt.Sscanf(status[1], "%d", &resp.StatusCode)
-		break
-	}
-
-	m, err := tp.ReadMIMEHeader()
-	if err != nil {
-		conn.Close()
-		return nil, err
-	}
-	for k, v := range m {
-		//fmt.Printf("%s: %s\n", k, v)
-
-		if strings.ToLower(k) == "content-length" {
-			resp.ContentLength, err = strconv.ParseInt(v[0], 10, 64)
+	// Header
+	var scanner *bufio.Scanner
+	cont := true
+	ofs := 0
+	remain := int64(0)
+	for cont {
+		for n, err := conn.Read(buf[ofs:]); n > 0; n, err = conn.Read(buf[ofs:]) {
 			if err != nil {
-				conn.Close()
-				return nil, err
-			}
-		}
-
-		if resp.Header.Get(k) == "" {
-			resp.Header.Set(k, v[0])
-			v = v[1:]
-		}
-		for _, vv := range v {
-			resp.Header.Add(k, vv)
-		}
-
-	}
-
-	if resp.Header.Get("Transfer-Encoding") == "chunked" {
-		// chunked
-		cur := 0
-		end := 0
-		for {
-			length := 0
-			if len(buf) < cur+6 {
-				// This is not a very accurate check, but in many cases it should be fine.
-				return nil, fmt.Errorf("slice out of range : use http.SetBuf() to change the allocation to %d bytes or more", cur+6)
-			}
-			for i := 0; ; i++ {
-				buf[cur+i], err = br.ReadByte()
-				if err != nil {
-					conn.Close()
-					return nil, err
+				println("Read error: " + err.Error())
+			} else {
+				// Take care of the case where "\r\n\r\n" is on the boundary of a buffer
+				start := ofs
+				if start > 3 {
+					start -= 3
 				}
-				length = i + 1
-				if i > 1 && buf[cur+i-1] == '\r' && buf[cur+i] == '\n' {
-					break
+				idx := bytes.Index(buf[start:ofs+n], []byte("\r\n\r\n"))
+				if idx == -1 {
+					ofs += n
+					continue
 				}
-			}
-			//fmt.Printf("cur:%d length:%d\n", cur, length)
+				idx += start + 4

-			size, err := strconv.ParseInt(string(buf[cur:cur+length-2]), 16, 64)
-			if err != nil {
-				conn.Close()
-				return nil, err
-			}
-			//cur += length
-			//fmt.Printf("cur:%d length:%d size:%d\n", cur, length, size)
+				scanner = bufio.NewScanner(bytes.NewReader(buf[0 : ofs+n]))
+				if resp.Status == "" && scanner.Scan() {
+					status := strings.SplitN(scanner.Text(), " ", 2)
+					if len(status) != 2 {
+						conn.Close()
+						return nil, fmt.Errorf("invalid status : %q", scanner.Text())
+					}
+					resp.Proto = status[0]
+					fmt.Sscanf(status[0], "HTTP/%d.%d", &resp.ProtoMajor, &resp.ProtoMinor)

-			end = cur + int(size) + 2 // size + 2 (\r\n)
-			if len(buf) < end {
-				return nil, fmt.Errorf("slice out of range : use http.SetBuf() to change the allocation to %d bytes or more", end)
-			}
-			for i := 0; i < int(size)+2; i++ {
-				buf[cur+i], err = br.ReadByte()
-				if err != nil {
-					conn.Close()
-					return nil, err
+					resp.Status = status[1]
+					fmt.Sscanf(status[1], "%d", &resp.StatusCode)
 				}
-			}
-			cur += int(size)

-			if size == 0 {
-				end = end - 2
+				for scanner.Scan() {
+					text := scanner.Text()
+					if text == "" {
+						// end of header
+						if idx < n+ofs {
+							ofs = ofs + n - idx
+							for i := 0; i < ofs; i++ {
+								buf[i] = buf[i+idx]
+							}
+						} else {
+							ofs = 0
+						}
+						break
+					} else {
+						header := strings.SplitN(text, ": ", 2)
+						if len(header) != 2 {
+							conn.Close()
+							return nil, fmt.Errorf("invalid header : %q", text)
+						}
+						if resp.Header.Get(header[0]) == "" {
+							resp.Header.Set(header[0], header[1])
+						} else {
+							resp.Header.Add(header[0], header[1])
+						}
+
+						if strings.ToLower(header[0]) == "content-length" {
+							resp.ContentLength, err = strconv.ParseInt(header[1], 10, 64)
+							if err != nil {
+								conn.Close()
+								return nil, err
+							}
+							remain = resp.ContentLength
+						}
+					}
+				}
+				cont = false
 				break
 			}
 		}
-		//fmt.Printf("%q\n", buf[:end])
-		resp.Body = io.NopCloser(bytes.NewReader(buf[:end]))
-	} else {
-		end := int(resp.ContentLength)
-		if len(buf) < end {
-			return nil, fmt.Errorf("slice out of range : use http.SetBuf() to change the allocation to %d bytes or more", end)
-		}
-		for i := 0; i < end; i++ {
-			buf[i], err = br.ReadByte()
+	}
+
+	// Body
+	remain -= int64(ofs)
+	if remain <= 0 {
+		resp.Body = io.NopCloser(bytes.NewReader(buf[:ofs]))
+		return resp, conn.Close()
+	}
+
+	cont = true
+	lastRequestTime := time.Now()
+	for cont {
+		for {
+			end := ofs + 0x400
+			if len(buf) < end {
+				return nil, fmt.Errorf("slice out of range : use http.SetBuf() to change the allocation to %d bytes or more", end)
+			}
+			n, err := conn.Read(buf[ofs : ofs+0x400])
+			if err != nil {
+				return nil, err
+			}
+			if n == 0 {
+				continue
+			}
 			if err != nil {
 				conn.Close()
 				return nil, err
+			} else {
+				ofs += n
+				remain -= int64(n)
+				if remain <= 0 {
+					resp.Body = io.NopCloser(bytes.NewReader(buf[:ofs]))
+					cont = false
+					break
+				}
+				if time.Now().Sub(lastRequestTime).Milliseconds() >= 1000 {
+					conn.Close()
+					return nil, fmt.Errorf("time out")
+				}
 			}
 		}
-		resp.Body = io.NopCloser(bytes.NewReader(buf[:end]))
 	}

 	return resp, conn.Close()
@@ -71,13 +71,10 @@ func (d *Driver) ConnectTCPSocket(addr, port string) error {
 	name[6] = byte(ipaddr[2])
 	name[7] = byte(ipaddr[3])

-	result, err := d.Rpc_lwip_connect(socket, name, uint32(len(name)))
+	_, err = d.Rpc_lwip_connect(socket, name, uint32(len(name)))
 	if err != nil {
 		return err
 	}
-	if result == -1 {
-		return fmt.Errorf("failed to connect to %d.%d.%d.%d port %s", addr[0], addr[1], addr[2], addr[3], port)
-	}

 	readset := []byte{}
 	writeset := []byte{0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}
@@ -344,11 +341,8 @@ func (d *Driver) ReadSocket(b []byte) (n int, err error) {
 		if err != nil {
 			return 0, err
 		}
-		if nn == -76 {
-			// no data
-			return 0, nil
-		} else if nn < 0 {
-			return 0, fmt.Errorf("error %d", nn)
+		if nn < 0 {
+			return 0, fmt.Errorf("error %d", n)
 		} else if nn == 0 || nn == -30848 {
 			return 0, d.DisconnectSocket()
 		}
@@ -1,4 +1,5 @@
 //go:build pybadge
+// +build pybadge

 package shifter

@@ -1,4 +1,5 @@
 //go:build rp2040
+// +build rp2040

 package ssd1289

@@ -1,4 +1,5 @@
 //go:build stm32wlx
+// +build stm32wlx

 package sx126x

@@ -19,11 +19,10 @@ type DistanceMode uint8
 type RangeStatus uint8

 type rangingData struct {
-	mm                 uint16
-	status             RangeStatus
-	signalRateMCPS     int32 //MCPS : Mega Count Per Second
-	ambientRateMCPS    int32
-	effectiveSPADCount uint16
+	mm              uint16
+	status          RangeStatus
+	signalRateMCPS  int32 //MCPS : Mega Count Per Second
+	ambientRateMCPS int32
 }

 type resultBuffer struct {
@@ -338,11 +337,6 @@ func (d *Device) AmbientRate() int32 {
 	return d.rangingData.ambientRateMCPS
 }

-// EffectiveSPADCount returns the effective number of SPADs
-func (d *Device) EffectiveSPADCount() uint16 {
-	return d.rangingData.effectiveSPADCount
-}
-
 // getRangingData stores in the buffer the ranging data
 func (d *Device) getRangingData() {
 	d.rangingData.mm = uint16((uint32(d.results.mmCrosstalkSD0)*2011 + 0x0400) / 0x0800)
@@ -390,7 +384,6 @@ func (d *Device) getRangingData() {

 	d.rangingData.signalRateMCPS = 1000000 * int32(d.results.signalRateCrosstalkMCPSSD0) / (1 << 7)
 	d.rangingData.ambientRateMCPS = 1000000 * int32(d.results.ambientRateMCPSSD0) / (1 << 7)
-	d.rangingData.effectiveSPADCount = d.results.effectiveSPADCount
 }

 // setupManualCalibration configures the manual calibration
@@ -1,323 +0,0 @@
-package wifinina
-
-import (
-	"bufio"
-	"bytes"
-	"fmt"
-	"io"
-	"strconv"
-	"strings"
-	"time"
-
-	"tinygo.org/x/drivers/net/http"
-)
-
-func (d *Device) ListenAndServe(addr string, handler http.Handler) error {
-
-	if handler == nil {
-		handler = http.DefaultServeMux
-	}
-
-	server := newServer(d, handler)
-
-	if err := server.listen(addr); err != nil {
-		return err
-	}
-
-	for {
-		client, err := server.accept()
-		if err != nil {
-			return err
-		}
-
-		if err := client.handleHTTP(); err != nil {
-			return err
-		}
-
-		if err = client.stop(); err != nil {
-			return err
-		}
-	}
-
-	return nil
-}
-
-// Server stuff
-
-type server struct {
-	device  *Device
-	handler http.Handler
-	sock    uint8
-	clients map[uint8]*client // keyed by client sock
-}
-
-func newServer(device *Device, handler http.Handler) *server {
-	return &server{
-		device:  device,
-		handler: handler,
-		sock:    NoSocketAvail,
-		clients: make(map[uint8]*client),
-	}
-}
-
-func portFromAddr(addr string) (uint16, error) {
-	// ignore anything before ':' in address
-	i := strings.LastIndex(addr, ":")
-	if i < 0 {
-		return 0, fmt.Errorf("Missing ':' in address")
-	}
-	v, err := strconv.ParseUint(addr[i+1:], 10, 16)
-	if err != nil {
-		return 0, fmt.Errorf("Parsing address err: %s", err)
-	}
-	return uint16(v), nil
-}
-
-func (s *server) listen(addr string) error {
-	port, err := portFromAddr(addr)
-	if err != nil {
-		return fmt.Errorf("Getting port err: %s", err)
-	}
-
-	s.sock, err = s.device.GetSocket()
-	if err != nil {
-		return fmt.Errorf("Getting socket err: %s", err)
-	}
-	if s.sock == NoSocketAvail {
-		return fmt.Errorf("No socket available")
-	}
-
-	return s.device.StartServer(port, s.sock, ProtoModeTCP)
-}
-
-func (s *server) availServer(sock uint8) (uint8, error) {
-	d := s.device
-
-	d.mu.Lock()
-	defer d.mu.Unlock()
-
-	if err := d.waitForChipSelect(); err != nil {
-		d.spiChipDeselect()
-		return NoSocketAvail, fmt.Errorf("Wait for CS: %s", err)
-	}
-
-	l := d.sendCmd(CmdAvailDataTCP, 1)
-	l += d.sendParam8(sock, true)
-	d.addPadding(l)
-	d.spiChipDeselect()
-	_, err := d.waitRspCmd1(CmdAvailDataTCP)
-	if err != nil {
-		return NoSocketAvail, fmt.Errorf("Wait for Rsp: %s", err)
-	}
-	newsock, err := d.getUint16(2, err)
-	if err != nil {
-		return NoSocketAvail, fmt.Errorf("getUint16: %s", err)
-	}
-	return uint8(newsock >> 8), nil
-}
-
-func (s *server) accept() (*client, error) {
-
-	for {
-		sock, err := s.availServer(s.sock)
-		if err != nil {
-			return nil, fmt.Errorf("accept: %w", err)
-		}
-
-		if sock == NoSocketAvail {
-			continue
-		}
-
-		if client, ok := s.clients[sock]; ok {
-			return client, nil
-		}
-
-		client := newClient(s, sock)
-		s.clients[sock] = client
-
-		return client, nil
-	}
-}
-
-// client stuff
-
-type client struct {
-	server *server
-	device *Device
-	sock   uint8
-
-	// HTTP request
-	req     *http.Request
-	reqBuf  bytes.Buffer
-	readBuf [256]byte
-
-	// HTTP response
-	res        bytes.Buffer
-	resHdr     http.Header
-	resBuf     bytes.Buffer
-	statusCode int
-}
-
-func newClient(server *server, sock uint8) *client {
-	return &client{
-		server: server,
-		device: server.device,
-		sock:   sock,
-	}
-}
-
-// client implements http.ResponseWriter interface
-
-func (c *client) Header() http.Header {
-	return c.resHdr
-}
-
-func (c *client) Write(b []byte) (int, error) {
-	return c.resBuf.Write(b)
-}
-
-func (c *client) WriteHeader(statusCode int) {
-	c.statusCode = statusCode
-}
-
-func (c *client) status() uint8 {
-	d := c.device
-
-	d.mu.Lock()
-	defer d.mu.Unlock()
-
-	if err := d.waitForChipSelect(); err != nil {
-		d.spiChipDeselect()
-		return 0
-	}
-
-	l := d.sendCmd(CmdGetClientStateTCP, 1)
-	l += d.sendParam8(c.sock, true)
-	d.addPadding(l)
-	d.spiChipDeselect()
-	_, err := d.waitRspCmd1(CmdGetClientStateTCP)
-	if err != nil {
-		return 0
-	}
-	status, err := d.getUint8(1, err)
-	if err != nil {
-		return 0
-	}
-	return status
-}
-
-func (c *client) stop() error {
-	if err := c.device.StopClient(c.sock); err != nil {
-		return err
-	}
-
-	// Wait max 5 secs for the connection to close
-	for i := 0; i < 50 && c.status() != TCPStateClosed; i++ {
-		time.Sleep(100 * time.Millisecond)
-	}
-
-	if c.status() != TCPStateClosed {
-		return fmt.Errorf("stop failed, client status %x", c.status())
-	}
-
-	return nil
-}
-
-func (c *client) handleHTTP() error {
-
-	c.reqBuf.Reset()
-	end := -1
-
-	// read the request
-
-	start := time.Now()
-	for {
-
-		// TODO use Server.ReadTimeout
-		if time.Since(start) > 1*time.Second {
-			return fmt.Errorf("ReadTimeout")
-		}
-
-		n, err := c.device.GetDataBuf(c.sock, c.readBuf[:])
-		if err != nil {
-			return fmt.Errorf("GetDataBuf: %s", err)
-		}
-		if n == 0 {
-			time.Sleep(1 * time.Millisecond)
-			continue
-		}
-
-		c.reqBuf.Write(c.readBuf[:n])
-		bytesSoFar := c.reqBuf.Bytes()
-
-		if end == -1 {
-
-			// search for blank line marking end-of-header
-			end = bytes.Index(bytesSoFar, []byte("\r\n\r\n"))
-			if end == -1 {
-				continue
-			}
-
-			// found end-of-header; parse header
-			end += len([]byte("\r\n\r\n"))
-			bufio := bufio.NewReader(bytes.NewReader(bytesSoFar[:end]))
-			c.req, err = http.ReadRequest(bufio)
-			if err != nil {
-				return err
-			}
-		}
-
-		v := c.req.Header.Get("Content-Length")
-		if v == "" {
-			// no body; we're done reading request
-			break
-		}
-
-		length, _ := strconv.Atoi(v)
-		if end+length == len(bytesSoFar) {
-			// got the whole body
-			body := bytes.NewReader(bytesSoFar[end:])
-			c.req.Body = io.NopCloser(body)
-			break
-		}
-
-		// continue reading request...
-	}
-
-	// build the response
-
-	c.statusCode = 200
-
-	c.resHdr = http.Header{}
-	c.resHdr.Add(`Content-Type`, `text/html; charset=UTF-8`)
-	c.resHdr.Add(`Connection`, `close`)
-
-	c.resBuf.Reset()
-	c.server.handler.ServeHTTP(c, c.req)
-
-	c.resHdr.Add(`Content-Length`, fmt.Sprintf("%d", c.resBuf.Len()))
-
-	c.res.Reset()
-	fmt.Fprintf(&c.res, "HTTP/1.1 %d %s\r\n", c.statusCode,
-		http.StatusText(c.statusCode))
-	if err := c.resHdr.Write(&c.res); err != nil {
-		return err
-	}
-	c.res.WriteByte(byte('\n'))
-	c.res.Write(c.resBuf.Bytes())
-
-	// send the response
-
-	written, err := c.device.SendData(c.res.Bytes(), c.sock)
-	if err != nil {
-		return err
-	}
-	if written == 0 {
-		return ErrDataNotWritten
-	}
-	if sent, _ := c.device.CheckDataSent(c.sock); !sent {
-		return ErrCheckDataError
-	}
-
-	return nil
-}
@@ -1,4 +1,5 @@
 //go:build none
+// +build none

 package main

@@ -284,6 +285,7 @@ func main() {
 	}
 	defer f.Close()
 	fmt.Fprintln(f, "//go:build", architectures[*arch].buildTag)
+	fmt.Fprintln(f, "// +build", architectures[*arch].buildTag)
 	f.WriteString(`
 package ws2812

@@ -1,4 +1,5 @@
 //go:build cortexm
+// +build cortexm

 package ws2812

@@ -1,4 +1,5 @@
 //go:build tinygo.riscv32
+// +build tinygo.riscv32

 package ws2812

@@ -1,4 +1,5 @@
 //go:build avr
+// +build avr

 package ws2812

@@ -1,4 +1,5 @@
 //go:build cortexm
+// +build cortexm

 package ws2812

@@ -1,4 +1,5 @@
 //go:build !baremetal
+// +build !baremetal

 package ws2812

@@ -1,4 +1,5 @@
 //go:build tinygo.riscv32
+// +build tinygo.riscv32

 package ws2812

@@ -1,4 +1,5 @@
 //go:build xtensa
+// +build xtensa

 package ws2812