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HAL_ChibiOS: implement NOFIFO option for uarts

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This commit is contained in:
Andrew Tridgell 2021-07-08 08:24:45 +10:00
parent c37310b966
commit c2b310ad86
1 changed files with 10 additions and 0 deletions
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10
libraries/AP_HAL_ChibiOS/UARTDriver.cpp
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@ -308,6 +308,16 @@ void UARTDriver::begin(uint32_t b, uint16_t rxS, uint16_t txS)
}
#endif
#if defined(USART_CR1_FIFOEN)
// enable the UART FIFO on G4 and H7. This allows for much higher baudrates
// without data loss when not using DMA
if (_last_options & OPTION_NOFIFO) {
_cr1_options &= ~USART_CR1_FIFOEN;
} else {
_cr1_options |= USART_CR1_FIFOEN;
}
#endif
/*
allocate the write buffer
*/