Hi,
Have A6 & A7 (pin 19 & 22) been added to the ISR(PCINT1_vect) group in your Arduino Boards code V4.0.2?
For example, should this work on your A-Star328PB?
/*
This is the example: Pin_Change_interrupt_LED from the PinChangeInterrupt v1.26 library
Copyright (c) 2014-2015 NicoHood
See the readme for credit to other people.
*/
#include "PinChangeInterrupt.h"
// Choose a valid PinChangeInterrupt pin of your Arduino board
_#define pinBlink A7_ //My emphasis
void setup() {
// set pin to input with a pullup, led to output
pinMode(pinBlink, INPUT_PULLUP);
pinMode(LED_BUILTIN, OUTPUT);
// Manually blink once to test if LED is functional
blinkLed();
delay(1000);
blinkLed();
// Attach the new PinChangeInterrupt and enable event function below
attachPCINT(digitalPinToPCINT(pinBlink), blinkLed, CHANGE);
}
void blinkLed(void) {
// Switch Led state
digitalWrite(LED_BUILTIN, !digitalRead(LED_BUILTIN));
}
void loop() {
// Nothing to do here
}
Pins A6 and A7 on the A-Star 328PB are defined as pins 20 and 21, respectively, as Arduino digital pins numbers. (You probably just made a typo.) For others following this discussion, you can find the pinout details for the A-Star 328PB in the top picture labeled “A-Star 328PB Micro pinout diagram” on the A-Star 328PB Micro’s category page.
As for your question, A6 and A7 are also known as PCINT26 and PCINT27 respectively. According to the “EXTINT - External Interrupts” section of the ATmega328PB datasheet, which is linked under the “Resources” tab on the A-Star 328PB’s product pages (e.g. A-Star 328PB Micro - 5V, 16MHz), those two pins use Pin Change Interrupt Request 3, not 1. If you are defining your own ISR, you would use PCINT3_vect. I did a quick test to see if your code will work on an A-Star 328PB. The program does not work. I suspect you’ll have to modify the library to add support for the ATmega328PB.
Good to have your confirmation that Pin Change Interrupt library example
DOES NOT work for the 328PB.
On a second attempt, I can confirm that A6 & A7 (in fact all Port E pins
TQFP pins 3, 6, 19 & 22) can be programmed with the Ardiono IDE.
Hope the sample below could help others?
Regards, Martin
//**** Connect switch between CPU Pin 22 and ground ******/
void setup()
{
pinMode(A7, INPUT_PULLUP); //TQFP Chip pin 22
pinMode(LED_BUILTIN, OUTPUT); //For diags ...
/****** Setup Interrupt ****************
ISR Code is at end if sketch, under loop()
******************************************/
cli();
PCICR |= 0b00001000; // Enables Port E Pin Change Interrupts
PCMSK3 |= 0b00001000; // Enable Pin Change Interrupt on PE3 (aka A7,
TQFP pin 22)
sei();
// Manually blink LED once to test if LED is functional
digitalWrite(LED_BUILTIN, HIGH);
delay(1000);
digitalWrite(LED_BUILTIN, LOW);
}
void loop()
{
// Nothing to do here ...
ISR(PCINT3_vect)
{
digitalWrite(LED_BUILTIN, !digitalRead(LED_BUILTIN)); //Toggle LED
for feedback...
}
