79 lines
1.7 KiB
Go
79 lines
1.7 KiB
Go
//go:build example
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// +build example
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//
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// Do not build by default.
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package main
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import (
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"fmt"
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"log"
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"time"
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"gobot.io/x/gobot/v2"
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"gobot.io/x/gobot/v2/drivers/i2c"
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"gobot.io/x/gobot/v2/platforms/tinkerboard"
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)
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func main() {
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// Wiring
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// PWR Tinkerboard: 1 (+3.3V, VCC), 6, 9, 14, 20 (GND)
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// I2C1 Tinkerboard: 3 (SDA), 5 (SCL)
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// YL-40 module: wire AOUT --> AIN2 for this example
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//
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// Note: temperature measurement is often buggy, because sensor is not properly grounded
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// fix it by soldering a small bridge to the adjacent ground pin of brightness sensor
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board := tinkerboard.NewAdaptor()
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yl := i2c.NewYL40Driver(board, i2c.WithBus(1))
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work := func() {
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// the LED light is visible above ~1.7V
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writeVal, _ := yl.AOUT()
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gobot.Every(1000*time.Millisecond, func() {
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if err := yl.Write(writeVal); err != nil {
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fmt.Println(err)
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} else {
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log.Printf(" %.1f V written", writeVal)
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writeVal = writeVal + 0.1
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if writeVal > 3.3 {
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writeVal = 0
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}
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}
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if brightness, err := yl.ReadBrightness(); err != nil {
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fmt.Println(err)
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} else {
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log.Printf("Brightness: %.0f [0..1000]", brightness)
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}
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if temperature, err := yl.ReadTemperature(); err != nil {
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fmt.Println(err)
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} else {
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log.Printf("Temperature: %.1f °C", temperature)
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}
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if ain2, err := yl.ReadAIN2(); err != nil {
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fmt.Println(err)
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} else {
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log.Printf("Read back AOUT: %.1f [0..3.3]", ain2)
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}
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if potiState, err := yl.ReadPotentiometer(); err != nil {
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fmt.Println(err)
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} else {
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log.Printf("Resistor: %.0f %% [-100..+100]", potiState)
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}
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})
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}
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robot := gobot.NewRobot("yl40Bot",
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[]gobot.Connection{board},
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[]gobot.Device{yl},
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work,
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)
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robot.Start()
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}
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