Micromod SAMD51

[benevpi]

This may be intended behaviours (or I may be doing something a bit wrong), but it looks like there are some pin definitions missing from the Micromod SAMD51

Running the Example1_DisplayTest from the HyperDisplay 4DLCD-320240 Arduino Library with the samd51 in the Input And Display board, I get errors that D1, D0 and PWM0 aren't defined. It runs fine when the values are set as follows:

#define PWM_PIN PIN_A2             // Pin definitions
#define CS_PIN 0
#define DC_PIN 1

[benevpi]

Just to add to this, I don't think the buzzer pin for the Input and Display micromod board (PWM1) is defined at all. I've been able to access the buzzer with:

#define BUZZERPIN PIN_A2+1

[edspark]

First thanks for the issue! So in the Arduino IDE, your regular digital pins (D0, D1, D2) you call using the number without the letter D.

For example:

pinMode(0, OUTPUT); 
digitalWrite(0, HIGH);
digitalWrite(0, LOW); 

The use of the #define that you've mentioned in your first comment is a totally viable solution. You might also see something like

int csPin = 0; 
int dcPin = 1; 

pinMode(csPin, OUTPUT)
digitalWrite(csPin, HIGH);
digitalWrite(csPin, LOW); 

// Or however these pins are used, this is just an example

As to your second comment, you've found a solution but one that isn't exactly user friendly. What you've done is called the value PIN_A2 that is set in the variant.h file and then incremented to A3 by adding one which conincidentally is the next entry in the PinDescription list. That will not always work, though it will work most of the time. You can simply call A3:

pinMode(A3, OUTPUT);

A3 is the pin number for PWM1 on the SAMD51. Here's a picture from the schematic:

Note that you're able to use "A3" to call an analog pin where you would not be able to call a digital pin in the same manner "D3". If you have anymore questions about pin numbering please check out our hookup guide on the SAMD51 MicroMod:

https://learn.sparkfun.com/tutorials/micromod-samd51-processor-board-hookup-guide/hardware-overview

This post did make me realize that those PWM pins may be nice to call directly, and I'll get that changed so that in the future you can do a:

#define BUZZERPIN PWM1