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HAL_ChibiOS: ensure RTS and CTS are both disabled for no flow control

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This commit is contained in:
Andrew Tridgell 2018-02-07 16:20:33 +11:00
parent 82f1f462ae
commit d0eb2970c7
1 changed files with 3 additions and 2 deletions
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5
libraries/AP_HAL_ChibiOS/UARTDriver.cpp
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@ -735,7 +735,7 @@ void UARTDriver::set_flow_control(enum flow_control flowcontrol)
palClearLine(sdef.rts_line);
_rts_is_active = true;
// disable hardware CTS support
((SerialDriver*)(sdef.serial))->usart->CR3 &= ~USART_CR3_CTSE;
((SerialDriver*)(sdef.serial))->usart->CR3 &= ~(USART_CR3_CTSE | USART_CR3_RTSE);
break;
case FLOW_CONTROL_AUTO:
@ -750,8 +750,9 @@ void UARTDriver::set_flow_control(enum flow_control flowcontrol)
palSetLineMode(sdef.rts_line, 1);
palClearLine(sdef.rts_line);
_rts_is_active = true;
// enable hardware CTS support
// enable hardware CTS support, disable RTS support as we do that in software
((SerialDriver*)(sdef.serial))->usart->CR3 |= USART_CR3_CTSE;
((SerialDriver*)(sdef.serial))->usart->CR3 &= ~USART_CR3_RTSE;
break;
}
}