How to use Arduino UNO R4 interrupt

[mirui]

I have 3 tasks for my Arduino, ADC to read anolog signal, printing work to display all info to OLED and motor.
Wondering how interrup works for R4, cannot find any usefull reference.

[notthesharpestspooninthedrawer]

Tell us why you think interrupts are necessary, or appropriate.

[van_der_decken]

@mirui

Wondering how interrup works for R4, cannot find any usefull reference.

Really?

Pin Change interrupt - Finding various variable names

Hi @pf_bsf, I made a test using 4 buttons on pins 1, 2, 3 & 4 and it is working fine for me, I made a function that changes the status of the built-in LED using any of these four buttons. This is my sketch: // LED and switch const byte buttonPin1 = 0; const byte buttonPin2 = 1; const byte buttonPin3 = 2; const byte buttonPin4 = 3; bool status = 1; void setup() { // Set LED as output pinMode(LED_BUILTIN, OUTPUT); // Set switch as input with pullup Serial.begin(9600); pinMode(butto…

Page 4 of https://docs.arduino.cc/resources/pinouts/ABX00080-full-pinout.pdf

You didn't find the above useful? Or you didn't find the above?

[sonofcy]

@mirui

cannot find any usefull reference.

where did you search? Here is my results

Here is the page LINK

[gcjr]

@mirui

I have 3 tasks for my Arduino, ADC to read anolog signal, printing work to display all info to OLED and motor.

you don't say how often they need to be done

wouldn't this work

const byte PinAdc = A0;
const byte PinPwm = 10;
// -----------------------------------------------------------------------------
void loop ()
{
    int adc = analogRead (PinAdc);
    int pwm = map (adc, 0, 1023, 0, 255);

    analogWrite (PinPwm, pwm);

    // use timer to update less often to minimize flicker
    static unsigned long msec0;
    unsigned long msec = millis ();
    if (msec - msec0 >= 250)  {
        msec0 = msec;

        char s [90];
        sprintf (s, "adc %4d, pwm %4d", adc, pwm);
        oledDisp (s);
    }
}

// -----------------------------------------------------------------------------
// stub for oled
void
oledDisp (
    const char *s )
{
    Serial.println (s);
}


// -----------------------------------------------------------------------------
void setup ()
{
    Serial.begin (9600);

    pinMode (PinPwm, OUTPUT);
}