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Fix uart TX flushing (#2029)

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wait for FSM to return idle
This commit is contained in:
Bert Melis 2018-11-19 17:04:05 +01:00 committed by Me No Dev
parent af79e18ecb
commit 44ca2ee976
1 changed files with 1 additions and 1 deletions
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cores/esp32/esp32-hal-uart.c
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@ -333,7 +333,7 @@ void uartFlush(uart_t* uart)
}
UART_MUTEX_LOCK();
while(uart->dev->status.txfifo_cnt);
while(uart->dev->status.txfifo_cnt || uart->dev->status.st_utx_out);
//Due to hardware issue, we can not use fifo_rst to reset uart fifo.
//See description about UART_TXFIFO_RST and UART_RXFIFO_RST in <<esp32_technical_reference_manual>> v2.6 or later.