uint8_t TXSerialfifoput2(uint8_t next)
{
if (TXSerialfifolevel2() < TX_SERIAL_FIFO_SIZE) {
TXSerialfifo2[TXSerialfifohead2] = next;
TXSerialfifohead2++;
if (TXSerialfifohead2 >= TX_SERIAL_FIFO_SIZE)
TXSerialfifohead2 = 0U;
// make sure transmit interrupts are enabled as long as there is data to send
USART_ITConfig(USART2, USART_IT_TXE, ENABLE);
return 1U;
} else {
return 0U; // signal an overflow occurred by returning a zero count
}
}
int AvailForWriteUSART2()
{
return TX_SERIAL_FIFO_SIZE - TXSerialfifolevel2();
}
