inline void xSerialFlush( xComPortHandlePtr pxPort )
{
/* Flush received characters from the serial port buffer.*/
uint8_t byte;
switch (pxPort->usart)
{
case USART0:
while ( UCSR0A & (1<<RXC0) )
byte = UDR0;
break;
case USART1:
#if defined(__AVR_ATmega324P__) || defined(__AVR_ATmega644P__)|| defined(__AVR_ATmega1284P__) || defined(__AVR_ATmega324PA__) || defined(__AVR_ATmega644PA__) ||defined(__AVR_ATmega640__) || defined(__AVR_ATmega1280__) || defined(__AVR_ATmega1281__) || defined(__AVR_ATmega2560__) || defined(__AVR_ATmega2561__)
while ( UCSR1A & (1<<RXC1) )
byte = UDR1;
break;
#endif
case USART2:
case USART3:
default:
break;
}
ringBuffer_Flush( &(pxPort->xRxedChars) );
}
/********************************************************************************//*!
* \brief Flushes all characters in the receive ring buffer (i.e. empties the buffer).
*
* All characters in the receive ring buffer are discarded. If characters are waiting in the
* USART for reading (a 2 byte FIFO is used for buffering received characters, they are also discarded.
*
* @param usartId - USART identifier.
*/
void usart_xflushRx(USART_ID usartId)
{
// Flush received characters from the USART transmit buffer.
register uint8_t byte __attribute__ ((unused));
// Flush the bytes in the USART
while (*usartReg[usartId].ucsrAPtr & RXC_BIT) byte = *usartReg[usartId].udrPtr;
// Flush the characters in the ring buffer.
ringBuffer_Flush( &(usartComBuf[usartId].xRxedChars) );
}
