While we prepare a cleaner solution, this patch allows back and forth between pinmuxes.Tested on UNO Q with next patch in the series and this sketchvoid loop() {  Serial.begin(115200);  Serial.println("helloooooo");  delay(20);  Serial.end();  delay(20);  pinMode(1, OUTPUT);  digitalWrite(1, HIGH);  delay(10);  digitalWrite(1, LOW);  delay(100);  analogWrite(1, 33);}Pin 1 correctly prints the string, muxes as GPIo and then produces the required PWM