mirror of
https://github.com/tinygo-org/drivers.git
synced 2026-08-04 23:17:47 +00:00
ft6336: add support for ft6336
This commit is contained in:
sago35
Ron Evans
@@ -0,0 +1,24 @@
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//go:build m5stack_core2
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// +build m5stack_core2
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package main
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import (
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"machine"
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"tinygo.org/x/drivers/ft6336"
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"tinygo.org/x/drivers/i2csoft"
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"tinygo.org/x/drivers/touch"
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)
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// InitDisplay initializes the display of each board.
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func initDevices() (touch.Pointer, error) {
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i2c := i2csoft.New(machine.SCL0_PIN, machine.SDA0_PIN)
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i2c.Configure(i2csoft.I2CConfig{Frequency: 100e3})
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resistiveTouch := ft6336.New(i2c, machine.Pin(39))
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resistiveTouch.Configure(ft6336.Config{})
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resistiveTouch.SetPeriodActive(0x00)
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return resistiveTouch, nil
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}
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@@ -0,0 +1,16 @@
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package main
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func main() {
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touchScreen, _ := initDevices()
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for {
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touch := touchScreen.ReadTouchPoint()
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if touch.Z > 0 {
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//X and Y are 16 bit with 12 bit resolution and need to be scaled for the display size
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//Z is 24 bit and is typically > 2000 for a touch
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println("touch:", touch.X, touch.Y, touch.Z)
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//Example of scaling for m5stack-core2's 320x240 display with 320x270 touch area
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println("screen:", (touch.X*320)>>16, (touch.Y*270)>>16)
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}
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}
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}
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@@ -0,0 +1,55 @@
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//go:build m5stack_core2
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// +build m5stack_core2
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package main
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import (
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"image/color"
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"machine"
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axp192 "tinygo.org/x/drivers/axp192/m5stack-core2-axp192"
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"tinygo.org/x/drivers/ft6336"
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"tinygo.org/x/drivers/i2csoft"
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"tinygo.org/x/drivers/ili9341"
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"tinygo.org/x/drivers/touch"
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)
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// InitDisplay initializes the display of each board.
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func initDevices() (touchPaintDisplay, touch.Pointer, error) {
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machine.SPI2.Configure(machine.SPIConfig{
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SCK: machine.LCD_SCK_PIN,
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SDO: machine.LCD_SDO_PIN,
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SDI: machine.LCD_SDI_PIN,
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Frequency: 40e6,
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})
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i2c := i2csoft.New(machine.SCL0_PIN, machine.SDA0_PIN)
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i2c.Configure(i2csoft.I2CConfig{Frequency: 100e3})
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axp := axp192.New(i2c)
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led := axp.LED
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led.Low()
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display := ili9341.NewSPI(
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machine.SPI2,
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machine.LCD_DC_PIN,
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machine.LCD_SS_PIN,
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machine.NoPin,
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)
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// configure display
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display.Configure(ili9341.Config{
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Width: 320,
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Height: 240,
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DisplayInversion: true,
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})
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display.FillScreen(color.RGBA{255, 255, 255, 255})
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display.SetRotation(ili9341.Rotation0Mirror)
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resistiveTouch := ft6336.New(i2c, machine.Pin(39))
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resistiveTouch.Configure(ft6336.Config{})
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resistiveTouch.SetPeriodActive(0x00)
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return display, resistiveTouch, nil
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}
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@@ -0,0 +1,163 @@
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package main
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import (
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"image/color"
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"math"
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"tinygo.org/x/drivers"
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"tinygo.org/x/drivers/touch"
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)
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type touchPaintDisplay interface {
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drivers.Displayer
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FillRectangle(x, y, width, height int16, c color.RGBA) error
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DrawRectangle(x, y, w, h int16, c color.RGBA) error
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}
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var (
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white = color.RGBA{255, 255, 255, 255}
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black = color.RGBA{0, 0, 0, 255}
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red = color.RGBA{255, 0, 0, 255}
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green = color.RGBA{0, 255, 0, 255}
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blue = color.RGBA{0, 0, 255, 255}
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magenta = color.RGBA{255, 0, 255, 255}
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yellow = color.RGBA{255, 255, 0, 255}
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cyan = color.RGBA{0, 255, 255, 255}
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oldColor color.RGBA
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currentColor color.RGBA
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)
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const (
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penRadius = 3
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boxSize = 30
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Xmin = 0
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Xmax = 0xFFFF
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Ymin = 0
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Ymax = 0xFFFF
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)
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func main() {
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display, resistiveTouch, _ := initDevices()
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// fill the background and activate the backlight
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width, height := display.Size()
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display.FillRectangle(0, 0, width, height, black)
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// make color selection boxes
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display.FillRectangle(0, 0, boxSize, boxSize, red)
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display.FillRectangle(boxSize, 0, boxSize, boxSize, yellow)
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display.FillRectangle(boxSize*2, 0, boxSize, boxSize, green)
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display.FillRectangle(boxSize*3, 0, boxSize, boxSize, cyan)
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display.FillRectangle(boxSize*4, 0, boxSize, boxSize, blue)
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display.FillRectangle(boxSize*5, 0, boxSize, boxSize, magenta)
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display.FillRectangle(boxSize*6, 0, boxSize, boxSize, black)
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display.FillRectangle(boxSize*7, 0, boxSize, boxSize, white)
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// set the initial color to red and draw a box to highlight it
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oldColor = red
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currentColor = red
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display.DrawRectangle(0, 0, boxSize, boxSize, white)
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last := touch.Point{}
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// loop and poll for touches, including performing debouncing
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debounce := 0
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for {
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point := resistiveTouch.ReadTouchPoint()
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touch := touch.Point{}
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if point.Z>>6 > 100 {
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rawX := mapval(point.X, Xmin, Xmax, 0, int(width))
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rawY := mapval(point.Y, Ymin, Ymax, 0, int(height))
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touch.X = rawX
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touch.Y = rawY
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touch.Z = 1
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} else {
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touch.X = 0
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touch.Y = 0
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touch.Z = 0
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}
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if last.Z != touch.Z {
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debounce = 0
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last = touch
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} else if math.Abs(float64(touch.X-last.X)) > 4 ||
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math.Abs(float64(touch.Y-last.Y)) > 4 {
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debounce = 0
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last = touch
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} else if debounce > 1 {
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debounce = 0
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HandleTouch(display, last)
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} else if touch.Z > 0 {
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debounce++
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} else {
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last = touch
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debounce = 0
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}
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}
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}
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// based on Arduino's "map" function
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func mapval(x int, inMin int, inMax int, outMin int, outMax int) int {
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return (x-inMin)*(outMax-outMin)/(inMax-inMin) + outMin
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}
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func HandleTouch(display touchPaintDisplay, touch touch.Point) {
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if int16(touch.Y) < boxSize {
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oldColor = currentColor
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x := int16(touch.X)
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switch {
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case x < boxSize:
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currentColor = red
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case x < boxSize*2:
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currentColor = yellow
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case x < boxSize*3:
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currentColor = green
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case x < boxSize*4:
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currentColor = cyan
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case x < boxSize*5:
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currentColor = blue
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case x < boxSize*6:
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currentColor = magenta
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case x < boxSize*7:
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currentColor = black
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case x < boxSize*8:
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currentColor = white
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}
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if oldColor == currentColor {
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return
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}
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display.DrawRectangle((x/boxSize)*boxSize, 0, boxSize, boxSize, white)
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switch oldColor {
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case red:
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x = 0
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case yellow:
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x = boxSize
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case green:
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x = boxSize * 2
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case cyan:
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x = boxSize * 3
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case blue:
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x = boxSize * 4
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case magenta:
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x = boxSize * 5
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case black:
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x = boxSize * 6
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case white:
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x = boxSize * 7
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}
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display.FillRectangle(int16(x), 0, boxSize, boxSize, oldColor)
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}
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if (int16(touch.Y) - penRadius) > boxSize {
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display.FillRectangle(
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int16(touch.X), int16(touch.Y), penRadius*2, penRadius*2, currentColor)
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}
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}
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