Hi Pablo_ESP,
We have validated with a Voltmeter that the PWM on PWM3 is working. We followed your steps from the original post which they are correct. When we change the duty_cycle the voltage changes proportionally. We could not validate it with a speaker because we dont have an amplifier/shield because the current is so low that the speaker drained the current. How are you testing this?
The Arduino IDE ID column is referring to the physical pins on the Galileo. I know the mux table is a bit confusing but GPORT0_BIT2_PWM3 is on the second column, second to last row. The mux for PWM3 is GPIO30.
Regards,
Intel_JEspinoza