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Hello: I am trying to better understand the functionality of the Chipkit Max32 board with respect to the analogWrite command. I have been testing pins A4, A5, 21, 23, 44 and 45 using the anlogWrite function. I am testing each pin separately, i.e. one at a time. I have the pin connected to ground through a 180Ohm resistor and monitoring the voltage across the resistor using an oscilloscope. I am using the following code changing the pin number in the analogWrite for each pin: void setup() { Serial.begin(9600); } void loop() { for (int i=0;i<256;i++){ analogWrite(4,i); delay(5000); Serial.print(i); Serial.println(""); } } I am using the delay(5000) command to give me enough time to monitor and measure the oscilloscope value and the Serial.print function to know where I am in the code execution. When I test the A4 and A5 pins, I measure 0V, regardless of the value written with the analogWrite. When I test the 21, 23, 44 and 45 pins the voltage is 0 until a value of 127 is reached. above 127 the voltage is 3.3V., constant. Do I need to initialize any other values for the analogWrite to function properly? Thank You
