USART_ReadBuffer
Default mainpageat91libperipheralsusartUSART_ReadBuffer
Description Source Call Graph
Start Line: 220
unsigned char USART_ReadBuffer(AT91S_USART *usart, void *buffer, unsigned int size)
{
    // Check if the first PDC bank is free
    if ((usart->US_RCR == 0) && (usart->US_RNCR == 0)) {

        usart->US_RPR = (unsigned int) buffer;
        usart->US_RCR = size;
        usart->US_PTCR = AT91C_PDC_RXTEN;

        return 1;
    }
    // Check if the second PDC bank is free
    else if (usart->US_RNCR == 0) {

        usart->US_RNPR = (unsigned int) buffer;
        usart->US_RNCR = size;

        return 1;
    }
    else {

        return 0;
    }
}