死活監視

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int pSwitch = 2;
 
void setup() {
  Serial.begin(9600);
  Serial.println("WatchDog");
}
 
int InitCount = 60;  // s
int count = InitCount;
void loop() {
  if (Serial.available()) {
    int c = Serial.read();
    switch(c) {
      default:
        Serial.print("Invalid input: ");
        Serial.println(c);
      break;
      case '\r':
      case '\n':
        ;
      break;
      case '0':
        Serial.println("Manual Reset");
        count = 0;
      break;
      case '1':
        Serial.println("Alive");
        count = 1000;
      break;
    }
  }
  Serial.println(count);
  if (count) {
    count--;
    digitalWrite(pSwitch, HIGH);
  }
  else {
    Serial.println("Power Off");
    digitalWrite(pSwitch, LOW);
    delay(3000);
    Serial.println("Power On");
    digitalWrite(pSwitch, HIGH);
    count = InitCount;
    delay(60000);
  }
  
  delay(1000);
}

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#need pyserial:
# $> pip install pyserial
 
import sys
import serial
import time
import datetime
 
args = sys.argv
if len(args) < 2:
    print("Format: BarkDog port cmd")
    quit()
port = args[1]
seri = serial.Serial(port, 9600, timeout=1000)
print("Open [{}]".format(seri))
 
one = bytes("1",'utf-8')
 
try:
    line = seri.readline().strip()
    print(line)
    
    while True:
        seri.write(one);
        time.sleep(1);
        print(datetime.datetime.now().strftime("%Y/%m/%d %H:%M:%S"))
 
 
except Exception as x:
    print("Error Stop!! " + x.args)
finally:
    seri.close()