uint8_t TXSerialfifoput1(uint8_t next)
{
if (TXSerialfifolevel1() < TX_SERIAL_FIFO_SIZE) {
TXSerialfifo1[TXSerialfifohead1] = next;
TXSerialfifohead1++;
if (TXSerialfifohead1 >= TX_SERIAL_FIFO_SIZE)
TXSerialfifohead1 = 0U;
// make sure transmit interrupts are enabled as long as there is data to send
USART_ITConfig(USART1, USART_IT_TXE, ENABLE);
return 1U;
} else {
return 0U; // signal an overflow occurred by returning a zero count
}
}
int AvailForWriteUSART1()
{
return TX_SERIAL_FIFO_SIZE - TXSerialfifolevel1();
}
