[Solved] Interruption on panel buttons

The 1286 Topboard has its button inputs connected to pin change interrupts PCINT 4, 5 & 6 for buttons Down, Enter and Up respectively. Please use this code as an example: 

#include <UC1701.h>
static UC1701 lcd;

volatile int modeFlag = 0;

void setup() {
  
    lcd.begin(); //enable LCD
    // Enable Pin Change Interrupt 6. 
    PCMSK0 = (1 << PCINT6);
    PCICR = (1 << PCIE0);
 
    // Global Interrupt Enable
   sei();    
}

ISR (PCINT0_vect)
{    
    modeFlag = 1;    
}

void loop() { 
  
  lcd.setCursor(0, 0);
  lcd.print("waiting   ");
  
  if (modeFlag == 1) {
    lcd.setCursor(0, 0);
    lcd.print("triggered");
    delay(1000); 
    modeFlag = 0;
  }
}

This demo sketch will show "waiting" on the Industruino's LCD screen, when you press the "Up" button an interrupt will be triggered and "triggered" will show on the LCD for one second. Please test against the "modeFlag" integer to jump between your "computing" and "setup" routines. To attach the interrupt to the "Enter" or "Down" button change "PCINT6" in line "PCMSK0 = (1 << PCINT6);" to PCINT5 or PCINT4.

Cheers,

Loic

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Loic De Buck

Loic De Buck

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Answered on 2/20/15, 8:38 AM

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I could not get this sample to work on the INDIO, are the interrupts different?

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Justin Smith

on 5/11/15, 5:50 PM

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Good Day,

This works perfectly to raise an event when "up" button is pressed.

Thanks to your code, I found a bit more details there: http://forum.arduino.cc/index.php?topic=45239.40;wap2.

Cheers,

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Desvaux Hugues

Desvaux Hugues

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Answered on 2/22/15, 12:33 PM

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