NetMeterbusMaster/reset.cpp

/*
 * reset.cpp
 *
 *  Created on: 14.05.2015
 *      Author: wn
 */

#include <Streaming.h>

const uint8_t POWER_LED = 4;


void resetDevice() {
  while (true) {
    digitalWrite(POWER_LED, LOW);
    delay(100);
    digitalWrite(POWER_LED, HIGH);
    delay(100);
  }
}

void watchdogReset() {
  static uint32_t last = 0;
  static uint16_t maxTmroutl = 0;

  // watchdog refresh
  cli();
  WDOG_REFRESH = 0xa602;
  WDOG_REFRESH = 0xb480;
  sei();

  uint32_t now = millis();
  if (last + 1000 < now) {
    last = now;
    uint16_t h = WDOG_TMROUTH;
    uint16_t l = WDOG_TMROUTL;
    maxTmroutl = (maxTmroutl > l) ? maxTmroutl : l;
    uint16_t c = WDOG_RSTCNT;

    Serial << "WDog, h: " << _HEX(h) << ", l: " << _HEX(l) << ", c: " << _HEX(c) << ", m: " << _HEX(maxTmroutl) << endl;
  }
}


extern "C" {
  void startup_early_hook( ) __attribute__ ((weak));
  void startup_early_hook() {
    // enable watchdog
    WDOG_UNLOCK = WDOG_UNLOCK_SEQ1;
    WDOG_UNLOCK = WDOG_UNLOCK_SEQ2;

    // one minute
    WDOG_TOVALL = 60000;
    WDOG_TOVALH = 0;
    WDOG_PRESC =  0;

    WDOG_STCTRLH = WDOG_STCTRLH_WDOGEN | WDOG_STCTRLH_ALLOWUPDATE | WDOG_STCTRLH_STOPEN | WDOG_STCTRLH_WAITEN;
  }
} // extern "C"