public void SetSquareWave(SquareWaveFrequency squareWaveFrequency, SquareWaveDisabledOutputControl outputControl = SquareWaveDisabledOutputControl.Zero)
{
byte register = (byte)outputControl;
register <<= 3; // bit 7 defines the square wave output level when disabled
// bit 6 & 5 are unused
if (squareWaveFrequency != SquareWaveFrequency.SQW_Off)
{
register |= 1;
}
register <<= 4; // bit 4 defines if the oscillator generating the square wave frequency is on or off.
// bit 3 & 2 are unused
register |= (byte)squareWaveFrequency; // bit 1 & 0 define the frequency of the square wave
this._i2cDevice.Write(new byte[] { DS1307_SQUARE_WAVE_CTRL_REGISTER_ADDRESS, register });
}
public void SquareWaveOutput(SquareWaveFrequency freq)
{
byte registerData;
switch (freq)
{
case SquareWaveFrequency.Wave_1000Hz:
registerData = (1 << 4);
break;
case SquareWaveFrequency.Wave_4096Hz:
registerData = (1 << 4) | (1 << 0);
break;
case SquareWaveFrequency.Wave_8192Hz:
registerData = (1 << 4) | (1 << 1);
break;
case SquareWaveFrequency.Wave_32768Hz:
registerData = (1 << 4) | (1 << 0) | (1 << 1);
break;
case SquareWaveFrequency.Wave_Low:
registerData = 0;
break;
case SquareWaveFrequency.Wave_High:
registerData = (1 << 7);
break;
default:
throw new NotSupportedException();
}
// control register is at 0x07
_bus.Write(new byte[] { Address, 0x07, registerData });
}
