Arduino Mega software reset

Projects Programming
1

Hello guys,

I'm trying to restart the loop with the remote but it doesn't even work with the code

#include <avr/wdt.h>

void softwareReset( uint8_t prescaller) {
  // start watchdog with the provided prescaller
  wdt_enable( prescaller);
  // wait for the prescaller time to expire
  // without sending the reset signal by using
  // the wdt_reset() method
  while(1) {}
}

void setup() { // add setup code here...}

void loop() {
  // ... various code...

  // restart in 60 milliseconds
  softwareReset( WDTO_60MS);
}

And

void softwareReset( unsigned long delayMillis) {
  uint32_t resetTime = millis() + delayMillis;
  while ( resetTime > millis()) { 
    /* wait and do nothing until the required delay expires... */
  }
  // jump to the start of the program
  asm volatile ( "jmp 0");  
}

Here my sketch

#include <TM1637Display.h>
#include "IRremote.h"
#include <avr/wdt.h>

// Module connection pins (Digital Pins)
#define CLK 4
#define DIO 3

// The amount of time (in milliseconds) between tests
#define TEST_DELAY   1000

TM1637Display display(CLK, DIO);

boolean running = false;
int count = 600;
uint8_t data[] = {0, 0, 0, 0};
const uint8_t PLAY[] = {B01110011, B00111000, B01110111, B01101110};
const int RECV_PIN = 5;
IRrecv irrecv(RECV_PIN);
decode_results results;
  
void setup() {
display.setBrightness(0x0f);
pinMode(2,OUTPUT);
 irrecv.enableIRIn();
 irrecv.blink13(true);
 display.setSegments(PLAY);
}

void loop() {
cronometro();
comeco();
}

void cronometro() {
while (running) {  

 data[0] = display.encodeDigit((count / 60) / 10); // Dezena de minuto
 data[1] = display.encodeDigit((count / 60) % 10) | (count % 2 ? 0x80 : 0x00); // Unidade de minuto
 data[2] = display.encodeDigit((count % 60) / 10); // Dezena de segundo
 data[3] = display.encodeDigit((count % 60) % 10); // Unidade de segundo
 display.setSegments(data);
  
  if(count >= 0) {
    count--;
  } else {
  }
  delay(TEST_DELAY);
}
}

void comeco() {
if(irrecv.decode(&results))
 {
 irrecv.resume();
 if( results.value == 0xFF629D )
 {
   running = true; 
 } else if( results.value == 0xFF4AB5 ) {
  softwareReset( WDTO_60MS);

 }
 }//if
}

void softwareReset( uint8_t prescaller) {
  // start watchdog with the provided prescaller
  wdt_enable( prescaller);
  // wait for the prescaller time to expire
  // without sending the reset signal by using
  // the wdt_reset() method
  while(1) {}
}
2

Once your code sets running = true, you are forever stuck in your cronometro() function so you can't do anything else like a software reset.

I don't think you need a software reset as much as a new design

3

A properly designed program should not need a software reset.

The Watchdog timer can be used to deal with an unexpected code fault

...R