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Adds an error message to HardwareSerial::setPins() (#7040)

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* Adds an error message to HardwareSerial::setPins() 
In order to avoid problems if the user tries to setPins() before initializing the Serial port with begin()
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Rodrigo Garcia 2022-07-26 10:41:04 -03:00 committed by GitHub
parent 03e2ad9b90
commit c996036e61
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1 changed files with 4 additions and 0 deletions
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cores/esp32/HardwareSerial.cpp
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@ -491,6 +491,10 @@ void HardwareSerial::setRxInvert(bool invert)
// negative Pin value will keep it unmodified // negative Pin value will keep it unmodified
void HardwareSerial::setPins(int8_t rxPin, int8_t txPin, int8_t ctsPin, int8_t rtsPin) void HardwareSerial::setPins(int8_t rxPin, int8_t txPin, int8_t ctsPin, int8_t rtsPin)
{ {
if(_uart == NULL) {
log_e("setPins() shall be called after begin() - nothing done");
return;
}
uartSetPins(_uart, rxPin, txPin, ctsPin, rtsPin); uartSetPins(_uart, rxPin, txPin, ctsPin, rtsPin);
} }