SoftwareSerial doesn't work on Nucleo-32L031K6

[mhd75]

I use Arduino IDE and "STM32 MCU based boards" library to program Nucleo32. Here are the settings:

I connect it directly using USB to computer.

Here is my code:

#include <SoftwareSerial.h>
SoftwareSerial mySerial(PB6, PB1);  // RX, TX

void setup() {
    Serial.begin(115200);
    Serial.println("Hi");

    mySerial.begin(115200); // When I add this line, nothing works anymore
}
void loop() {
    if (Serial.available()) {
        String command = Serial.readStringUntil('\n');
        Serial.print("Just received a Serial from PC: ");
        Serial.println(command);
    }
}

I reset it and it writes "Hi" in the Serial monitor, but when I begin() the software serial (line 8), nothing works anymore. Unable to toggle pins, no output appears in the Serial monitor and everything gets stuck.

When I remove line 8, it works without any problems.

[Tesla DeLorean]

Sounds like it faults the MCU.

Debug it, or engage with the Arduino developers.

Can you use a regular UART based serial port.

Check mySerial is not NULL.

[Karl Yamashita]

Since you're using Arduino IDE with an Arduino type library, you should be asking for help in the Arduino forum.