Generating a square wave on Portenta machine control

[davidsalamon]

See the thread on using library functions with Portenta Machine Control:

Portenta Machine Edition Pin Naming Convention

Say, you want to write to Digital output pin #2 Unfortunately, the pinout diagram is no use here, but if you check the schematics or the library you will notice the following array containing the corresponding Portenta H7 pin names: mbed::DigitalOut out[8] = { mbed::DigitalOut(PI_6), mbed::DigitalOut(PH_9), mbed::DigitalOut(PJ_9), mbed::DigitalOut(PE_2), mbed::DigitalOut(PI_3), mbed::DigitalOut(PI_2), mbed::DigitalOut(PD_3), mbed::DigitalOut(PA_14) }; Digital output pin #2 corresponds t…

In this case, if you would like to output a tone on digital pin #2, you would simply use:

tone(PinNameToIndex(PJ_9), NOTE_A4, 1000);
noTone(PinNameToIndex(PJ_9));