nanoFramework.Iot.Device.SparkFunLcd 1.1.580

SparkFun RGB串行 Open LCD 显示器（尺寸为20x4或16x2）的LCD库，支持I2C连接

使用 SparkFunLcd.cs 通过I2C驱动SparkFun LCD模块。

例如，有关产品信息，请参阅 SparkFun LCD-16398

该驱动程序中包含的代码基于 OpenLCD

用法

例如，以下代码将简单消息写入显示屏：

var settings = new I2cConnectionSettings(busId: 1, deviceAddress: SparkFunLcd.DefaultI2cAddress, busSpeed: I2cBusSpeed.StandardMode);
using (var i2cDevice = I2cDevice.Create(settings))
{
    using (var lcd = new SparkFunLcd(i2cDevice, SparkFunLcd.DisplaySizeEnum.Size20x4))
    {
        lcd.SetBacklight(Color.FromArgb(0, 255, 0));
        lcd.SetContrast(4);
        lcd.SetDisplayState(false);
        lcd.Clear();
        lcd.Write(0, 0, "SparkFun 20x4 SerLCD");
        lcd.Write(0, 1, "P/N# LCD-16398");
        lcd.SetDisplayState(true);
    }
}

(针对Adafruit Huzzah32 Feather验证的代码)

自定义字符

• 如上图所示，可以定义自定义字符
• 最多可以定义八个自定义字符，编号为0x0至0x7
• 有关生成字节数组字符位屏蔽的信息，请参阅 链接

// demonstrating custom characters
{
    lcd.CreateCustomCharacter(0, new byte[] { 0x0, 0x1b, 0xe, 0x4, 0xe, 0x1b, 0x0, 0x0 }); // define custom character 0x0
    lcd.CreateCustomCharacter(1, new byte[] { 0x0, 0x1, 0x3, 0x16, 0x1c, 0x8, 0x0, 0x0 }); // define custom character 0x1

    lcd.Clear();
    lcd.SetCursorPosition(0, 0);
    lcd.Write(new char[] { '\x0', '\x1' }); // write custom character 0x0 followed by custom character 0x1
}

关于I2C引脚使用的重要注意事项

重要：请确保芯片引脚正确配置为I2C引脚，例如对于ESP32，

// configure ESP32 device I2C bus
{
    // note: actual pin-out is specific to Adafruit Huzzah32 Feather on which code was tested
    int dataPin = Gpio.IO23;
    int clockPin = Gpio.IO22;
    Configuration.SetPinFunction(dataPin, DeviceFunction.I2C1_DATA);
    Configuration.SetPinFunction(clockPin, DeviceFunction.I2C1_CLOCK);
}