protected SPI(SPIChipSelect cs, SPIBitOrder bitOrder, SPIClockDivider clockDivider, SPIMode mode)
{
this._cs = cs;
this._bitOrder = bitOrder;
this._clockDivider = clockDivider;
this._mode = mode;
}
public RaspSPI(SPIMode DataMode, SPIBitOrder BitOrder,
SPIClockDivider ClockDivider, ChipSelect ChipSelect,
bool ChipSelectPolarity)
{
RaspExtern.SPI.bcm2835_spi_begin();
this.DataMode = DataMode;
this.BitOrder = BitOrder;
this.ClockDivider = ClockDivider;
this.ChipSelect = ChipSelect;
this.ChipSelectPolarity = ChipSelectPolarity;
}
public void EnableSPI(SPIMode DataMode = SPIMode.MODE1,
SPIBitOrder BitOrder = SPIBitOrder.Order_MSBFIRST,
SPIClockDivider ClockDivider = SPIClockDivider.Divider_256,
ChipSelect ChipSelect = ChipSelect.CS0,
bool ChipSelectPolarity = false)
{
if (spi != null)
{
spi.Dispose();
}
spi = new RaspSPI(DataMode, BitOrder, ClockDivider, ChipSelect, ChipSelectPolarity);
}
// void beginTransaction(SPISettings settings);
// private const int SPI_BEGIN_TRANSACTION = 1208;
public void beginTransaction(
uint clock = 1000000, SPIBitOrder bitOrder = SPIBitOrder.MSBFIRST, SPIMode dataMode = SPIMode.MODE0)
{
Esp32If.GpioExtent[] exts = new Esp32If.GpioExtent[] {
new Esp32If.GpioExtent(),
new Esp32If.GpioExtent()
};
/*
* p1=spiBus
* p2=clock
## extension ##
##int bitOrder
##int dataMode
*/
exts[0].Contents = esp32If.IntToBytes((int)bitOrder);
exts[1].Contents = esp32If.IntToBytes((int)dataMode);
esp32If.GpioCommandExt(SPI_BEGIN_TRANSACTION, (int)spiBus, (int)clock, exts);
}
// void setBitOrder(uint8_t bitOrder);
// private const int SPI_SET_BIT_ORDER = 1203;
public void setBitOrder(SPIBitOrder bitOrder)
{
esp32If.GpioCommand(SPI_SET_BIT_ORDER, (int)spiBus, (int)bitOrder);
}
protected static extern void bcm2835_spi_setBitOrder(SPIBitOrder order);
public static void SetBitOrder(SPIBitOrder order)
{
bcm2835_spi_setBitOrder(order);
}
public static extern void bcm2835_spi_setBitOrder(SPIBitOrder order);
