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Add I2S example for M5Core2 in readme #237

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Add I2S example for M5Core2 in readme
henrivw Nov 11, 2022
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Expand Up @@ -366,6 +366,26 @@ var pin5 = M5StickC.GpioController.OpenPin(36, PinMode.Output);

The M5Core, M5Core2, Fire and Atom Lite/Matrix exposes 2 DAC and you can access them thru the `Dac1` and `Dac2` properties. Refer to the [DAC documentation](https://github.com/nanoframework/System.Device.Dac) for more information.

### I2S (sound)


On the M5Core2, wav files can be played using I2S by installing the package [nanoFramework.System.Device.I2s](https://github.com/nanoframework/System.Device.I2S).
To play wav files on the M5Core2, use following initialization:

```csharp
int bckPin = 12;
int dataPin = 2;
int wsPin = 0;
I2sWavPlayer.Bus bus = I2sWavPlayer.Bus.One;
var audioFile = "D:\\Variation-CLJ013901.wav";
using (var player = new I2sWavPlayer(bus, audioFile, bckPin, dataPin, wsPin))
{
M5Core2.Power.Gpio2Value = PinValue.High; //speaker power on
player.Play();
M5Core2.Power.Gpio2Value = PinValue.Low; //speaker power off
}
```

### Led

The M5StickC/CPlus exposes a led. You can access it thru the `Led` property:
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