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Code Issues Wiki Activity

Handle USART TX pulldown (#12929)

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SA is always unidirectional
Only switch AT32 TX line to input when transmission is complete
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Steve Evans 2023-07-02 21:09:00 +01:00 • committed by GitHub
parent 6ba117d69e
commit 1333771140
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8 changed files with 20 additions and 25 deletions
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src/main/drivers/stm32/serial_uart_stm32g4xx.c
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@ -309,7 +309,7 @@ uartPort_t *serialUART(UARTDevice_e device, uint32_t baudRate, portMode_e mode,
if ((mode & MODE_TX) && txIO) {
IOInit(txIO, OWNER_SERIAL_TX, RESOURCE_INDEX(device));
if ((options & SERIAL_INVERTED) == SERIAL_NOT_INVERTED) {
if (((options & SERIAL_INVERTED) == SERIAL_NOT_INVERTED) && !(options & SERIAL_BIDIR_PP_PD)) {
uartdev->txPinState = TX_PIN_ACTIVE;
// Switch TX to an input with pullup so it's state can be monitored
uartTxMonitor(s);