nanoFramework.Iot.Device.Chsc6540 1.1.580

CHSC6540 - 触摸屏控制器

CHSC6540 是 M5Stack Tough 的触摸屏控制器。

文档

• 有关触摸控制器更多信息，遗憾的是，制造商没有提供数据表。只有一个来自内容提供商的完整阴影副本在此。

用法

重要：在创建I2cDevice之前，请确保正确设置 I2C 引脚，特别是针对 ESP32，确保已安装nanoFramework.Hardware.ESP32 nuget

//////////////////////////////////////////////////////////////////////
// when connecting to an ESP32 device, need to configure the I2C GPIOs
// used for the bus
Configuration.SetPinFunction(21, DeviceFunction.I2C1_DATA);
Configuration.SetPinFunction(22, DeviceFunction.I2C1_CLOCK);

对于 STM32等其他设备，请确保您使用的是您将要使用的 I2C 总线的预置引脚。

注意：此示例需要 M5Stack Tough。如果您想使用其他设备，只需删除所有相关的 NuGet 包。

using System.Device.Gpio;
using System.Device.I2c;
using System.Diagnostics;
using System.Threading;
using Iot.Device.Chsc6540;
using nanoFramework.Hardware.Esp32;

//////////////////////////////////////////////////////////////////////
// when connecting to an ESP32 device, need to configure the I2C GPIOs
// used for the bus
Configuration.SetPinFunction(21, DeviceFunction.I2C1_DATA);
Configuration.SetPinFunction(22, DeviceFunction.I2C1_CLOCK);

I2cConnectionSettings settings = new(1, Chsc6540.DefaultI2cAddress);
using I2cDevice device = I2cDevice.Create(settings);
using GpioController gpio = new();

using Chsc6540 sensor = new(device);
sensor.SetInterruptMode(true);

gpio.OpenPin(39, PinMode.Input);
// This will enable an event on GPIO39 on falling edge when the screen if touched
gpio.RegisterCallbackForPinValueChangedEvent(39, PinEventTypes.Falling, TouchInterrupCallback);

while (true)
{
    Thread.Sleep(20);
}

void TouchInterrupCallback(object sender, PinValueChangedEventArgs pinValueChangedEventArgs)
{
    Debug.WriteLine("Touch interrupt");
    var points = sensor.GetNumberPoints();
    if (points == 1)
    {
        var point = sensor.GetPoint(true);
        // Some controllers supports as well events, you can get access to them as well thru point.Event
        Debug.WriteLine($"ID: {point.TouchId}, X: {point.X}, Y: {point.Y}, Weight: {point.Weigth}, Misc: {point.Miscelaneous}");
    }
    else if (points == 2)
    {
        var dp = sensor.GetDoublePoints();
        Debug.WriteLine($"ID: {dp.Point1.TouchId}, X: {dp.Point1.X}, Y: {dp.Point1.Y}, Weight: {dp.Point1.Weigth}, Misc: {dp.Point1.Miscelaneous}");
        Debug.WriteLine($"ID: {dp.Point2.TouchId}, X: {dp.Point2.X}, Y: {dp.Point2.Y}, Weight: {dp.Point2.Weigth}, Misc: {dp.Point2.Miscelaneous}");
    }
}