AVR program similar to tpl5110

April 19, 2023

#include "Arduino.h"
#include "LowPower.h"

#define SNOOZE_SECS 8
#define START_AT_SECS (8 * 60)
#define RUN_SECS (2 * 60)
#define TOTAL_SECS ( START_AT_SECS + RUN_SECS )

#define BOOST_PIN PIN_PB1 // low to disable
#define BOOST_ENABLE HIGH
#define BOOST_DISABLE LOW

void snooze()
{
  LowPower.powerDown(SLEEP_8S, ADC_OFF, BOD_OFF);
}

void app_run()
{
  //digitalWrite(BOOST_PIN, BOOST_ENABLE);
  pinMode(BOOST_PIN, INPUT); // boost module has pullup

  digitalWrite(LED_BUILTIN, HIGH);
}

void app_stop()
{
  pinMode(BOOST_PIN, OUTPUT);
  digitalWrite(BOOST_PIN, BOOST_DISABLE);
  
  digitalWrite(LED_BUILTIN, LOW);
}

void setup() {
  pinMode(LED_BUILTIN, OUTPUT);
  digitalWrite(LED_BUILTIN, LOW);

  pinMode(BOOST_PIN, OUTPUT);
  digitalWrite(BOOST_PIN, BOOST_DISABLE);
}

void loop() 
{
  static int running = 0;
  static long ticker = START_AT_SECS - 8; // 0;
  //static int led_val = LOW;

  snooze();
  ticker += SNOOZE_SECS;

  if (ticker >= START_AT_SECS) {
    if (!running) {
      app_run();
      running = 1;
    }
  }
  if (ticker >= TOTAL_SECS) {
    app_stop();
    running = 0;
    ticker = 0;
  }

  //digitalWrite(LED_BUILTIN, led_val);
  //led_val ^= 1;
}