SPI_WriteBuffer
Default mainpageat91libperipheralsspiSPI_WriteBuffer
Description Source Call Graph
Start Line: 120
unsigned char SPI_WriteBuffer(AT91S_SPI *spi, void *buffer, unsigned int length)
{
    // Check if first bank is free
    if (spi->SPI_TCR == 0) {

        spi->SPI_TPR = (unsigned int) buffer;
        spi->SPI_TCR = length;
        spi->SPI_PTCR = AT91C_PDC_TXTEN;
        return 1;
    }
    // Check if second bank is free
    else if (spi->SPI_TNCR == 0) {

        spi->SPI_TNPR = (unsigned int) buffer;
        spi->SPI_TNCR = length;
        return 1;
    }
      
    // No free banks
    return 0;
}