SPI_Write
Default mainpageat91libperipheralsspiSPI_Write
Description Source Call Graph
Start Line: 100
void SPI_Write(AT91S_SPI *spi, unsigned int npcs, unsigned short data)
{
    // Discard contents of RDR register
    //volatile unsigned int discard = spi->SPI_RDR;

    // Send data
    while ((spi->SPI_SR & AT91C_SPI_TXEMPTY) == 0);
    spi->SPI_TDR = data | SPI_PCS(npcs);
    while ((spi->SPI_SR & AT91C_SPI_TDRE) == 0);
}