mirrors/micropython
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

esp8266/uart: Add uart_flush() function.

Browse Source
This commit is contained in:
Paul Sokolovsky 2016-01-03 07:33:42 +02:00
parent d3a4d39687
commit d9d4a72679
2 changed files with 10 additions and 0 deletions

9
esp8266/uart.c

@ -105,6 +105,15 @@ void uart_tx_one_char(uint8 uart, uint8 TxChar) {
WRITE_PERI_REG(UART_FIFO(uart), TxChar); WRITE_PERI_REG(UART_FIFO(uart), TxChar);
} }
void uart_flush(uint8 uart) {
while (true) {
uint32 fifo_cnt = READ_PERI_REG(UART_STATUS(uart)) & (UART_TXFIFO_CNT<<UART_TXFIFO_CNT_S);
if ((fifo_cnt >> UART_TXFIFO_CNT_S & UART_TXFIFO_CNT) == 0) {
break;
}
}
}
/****************************************************************************** /******************************************************************************
* FunctionName : uart1_write_char * FunctionName : uart1_write_char
* Description : Internal used function * Description : Internal used function

1
esp8266/uart.h

@ -92,5 +92,6 @@ typedef struct {
void uart_init(UartBautRate uart0_br, UartBautRate uart1_br); void uart_init(UartBautRate uart0_br, UartBautRate uart1_br);
int uart0_rx(void); int uart0_rx(void);
void uart_tx_one_char(uint8 uart, uint8 TxChar); void uart_tx_one_char(uint8 uart, uint8 TxChar);
void uart_flush(uint8 uart);
#endif // _INCLUDED_UART_H_ #endif // _INCLUDED_UART_H_