Eric Wieser / BurstSPI

Fork for fixing STM32

Dependents:   SSD1351

Fork of BurstSPI by Erik -

BurstSPI_STM32F4.cpp

Committer:
EricWieser
Date:
2016-10-15
Revision:
14:98658a80a698
Parent:
13:bc069279eb37

File content as of revision 14:98658a80a698:

#if defined(TARGET_STM32F4)
#include "BurstSPI.h"
 
void BurstSPI::fastWrite(int data) {
    
    SPI_TypeDef *spi = _spi.spi.handle.Instance;
    // Check if data is transmitted
    while ((spi->SR & SPI_SR_TXE) == 0);
    spi->DR = data;
}
    
void BurstSPI::clearRX( void ) {
    //Check if the RX buffer is busy
    SPI_TypeDef *spi = _spi.spi.handle.Instance;
    //While busy, keep checking
    while (spi->SR & SPI_SR_BSY){   
        // Check RX buffer readable
        while ((spi->SR & SPI_SR_RXNE) == 0);
        int dummy = spi->DR;
    }
}
#endif