diff --git a/src/main/drivers/serial_softserial.c b/src/main/drivers/serial_softserial.c index 201a3742f4..389596ec97 100644 --- a/src/main/drivers/serial_softserial.c +++ b/src/main/drivers/serial_softserial.c @@ -255,8 +255,9 @@ serialPort_t *openSoftSerial(softSerialPortIndex_e portIndex, serialReceiveCallb // If RX and TX pins are both assigned, we CAN use either with a timer. // However, for consistency with hardware UARTs, we only use TX pin, // and this pin must have a timer, and it should not be N-Channel. - if (!(timerTx && !(timerTx->output & TIMER_OUTPUT_N_CHANNEL))) + if (!(timerTx && !(timerTx->output & TIMER_OUTPUT_N_CHANNEL))) { return NULL; + } softSerial->timerHardware = timerTx; softSerial->txIO = txIO; @@ -265,8 +266,9 @@ serialPort_t *openSoftSerial(softSerialPortIndex_e portIndex, serialReceiveCallb } else { if (mode & MODE_RX) { // Need a pin & a timer on RX. Channel should not be N-Channel. - if (!(timerRx && !(timerRx->output & TIMER_OUTPUT_N_CHANNEL))) + if (!(timerRx && !(timerRx->output & TIMER_OUTPUT_N_CHANNEL))) { return NULL; + } softSerial->rxIO = rxIO; softSerial->timerHardware = timerRx;