Darren Ulrich
Added SPI burst mode to spi 8 bit.
Dependents: Bicycl_Computer_NUCLEO-F411RE Bicycl_Computer_NUCLEO-L476RG
Fork of
UniGraphic
by 
GraphicsDisplay
Added SPI burst mode to this graphics driver. If whoever wants this rolled in to repository let me know. I replaced _spi.write(); with fastWrite(); and clearRX();
SPI8.cpp
// need to re-create SPI firmware to access SPI handle
static SPI_HandleTypeDef SpiHandle;
void SPI8::fastWrite(int data) {
SpiHandle.Instance = SPI1;
// Check if data is transmitted
while ((SpiHandle.Instance->SR & SPI_SR_TXE) == 0);
SpiHandle.Instance->DR = data;
}
void SPI8::clearRX( void ) {
SpiHandle.Instance = SPI1;
//Check if the RX buffer is busy
//While busy, keep checking
while (SpiHandle.Instance->SR & SPI_SR_BSY){
// Check RX buffer readable
while ((SpiHandle.Instance->SR & SPI_SR_RXNE) == 0);
int dummy = SpiHandle.Instance->DR;
}
}