Noduino Interrupts

1 Overview

• attachInterrupt()
• detachInterrupt()

• noInterrupts() --- disable the interrupt
• Interrupts() --- enable the interrupt

We suggest you to use:

• D8 (GPIO4), D9 (GPIO5)
• D4 (GPIO13), D5 (GPIO12), D6 (GPIO14)
• D2 (GPIO2)

2 Examples

Use an encoder example:

• D8 connect to the channel A to receive the interrupt (rising)
• D9 connect to the channel B

#include "noduino.h"

static int32_t pos = 0;
static bool past_b = 0;

void do_encoder_a()
{
	past_b = (bool)digitalRead(D9);
	past_b ? pos++ : pos--;
	serial_printf("pos = %d\r\n", pos);
}

void setup()
{
	serial_begin(115200);

	pinMode(D9, INPUT);
	
	attachInterrupt(D8, do_encoder_a, RISING);
}

void loop()
{
}

You can try the example in noduino-sdk/examples/noduino/encoder

3 Reference

• Noduino