serialCommandSleep.ino

// Demo Code for SerialCommand Library
// Craig Versek, Jan 2014
// based on code from Steven Cogswell, May 2011

#include <SerialCommand.h>
#include <RTCZero.h>

#define arduinoLED 13   // Arduino LED on board

SerialCommand sCmd(Serial);         // The demo SerialCommand object, initialize with any Stream object


/* Create an rtc object */
RTCZero rtc;
int AlarmTime;


void setup() {

    rtc.begin();

  pinMode(arduinoLED, OUTPUT);      // Configure the onboard LED for output
  digitalWrite(arduinoLED, LOW);    // default to LED off

  Serial.begin(9600);
  Serial.println("Ready");


  // Setup callbacks for SerialCommand commands
  sCmd.addCommand("ON",    LED_on);          // Turns LED on
  sCmd.addCommand("OFF",   LED_off);         // Turns LED off
  sCmd.addCommand("HELLO", sayHello);        // Echos the string argument back

  sCmd.addCommand("SLEEP",     sleep);  // Converts two arguments to integers and echos them back


  sCmd.setDefaultHandler(unrecognized);      // Handler for command that isn't matched  (says "What?")
  Serial.println("Ready");
}

void loop() {


  int num_bytes = sCmd.readSerial();      // fill the buffer
  if (num_bytes > 0){
    sCmd.processCommand();  // process the command
  }
  delay(10);

}



void LED_on(SerialCommand this_sCmd) {
  this_sCmd.println("LED on");
  digitalWrite(arduinoLED, HIGH);
}

void LED_off(SerialCommand this_sCmd) {
  this_sCmd.println("LED off");
  digitalWrite(arduinoLED, LOW);
}

void sayHello(SerialCommand this_sCmd) {
  char *arg;
  arg = this_sCmd.next();    // Get the next argument from the SerialCommand object buffer
  if (arg != NULL) {    // As long as it existed, take it
    this_sCmd.print("Hello ");
    this_sCmd.println(arg);
  }
  else {
    this_sCmd.println("Hello, whoever you are");
  }
}


void sleep(SerialCommand this_sCmd) {
  int shutdownNumber, sleepNumber;
  char *arg;

  this_sCmd.println("We're in processCommand");
  arg = this_sCmd.next();
  if (arg != NULL) {
    shutdownNumber = atoi(arg);    // Converts a char string to an integer
   // this_sCmd.print("First argument was: ");
   // this_sCmd.println(aNumber);
  }
  else {
   // this_sCmd.println("No arguments");
  }


 arg = this_sCmd.next();
  if (arg != NULL) {
    sleepNumber = atol(arg);
   // this_sCmd.print("Second argument was: ");
    //this_sCmd.println(aNumber);
  }
  else {
  //  this_sCmd.println("No second argument");
  }
  
  
Serial.print("Shutting down process: ");
Serial.print(shutdownNumber);
Serial.println(" seconds.");

// give aNumber seconds til sleep (wait for BBB to shut down)
  for (int a=0;a<shutdownNumber;a++) {
  digitalWrite(13, HIGH);   // turn the LED on 
  delay(1000);              
  digitalWrite(13, LOW);    // turn the LED off
  delay(1000);
  }

Serial.print("Going to sleep for ");
Serial.print(sleepNumber);
Serial.println(" seconds.");

Serial.println("\n Note: device may reconnect on a different USB port.");

// now sleep for sleepNumber seconds
 AlarmTime = rtc.getSeconds()+sleepNumber; // Adds 10 seconds to alarm time
  AlarmTime = AlarmTime % 60; // checks for roll over 60 seconds and corrects

Serial.print("Next Alarm Time:");
  Serial.println(AlarmTime);
  
  rtc.setAlarmSeconds(AlarmTime); // Wakes at next alarm time
  rtc.enableAlarm(rtc.MATCH_SS); // Match seconds only
  rtc.attachInterrupt(alarmMatch);

Serial.end();
  USBDevice.detach(); // Safely detach the USB prior to sleeping
  
  rtc.standbyMode();    // Sleep until next alarm match

  USBDevice.attach();   // Re-attach the USB, audible sound on windows machines

  // Simple indication of being awake
  for (int i=0;i<5;i++) {
  digitalWrite(13, HIGH);   // turn the LED on 
  delay(100);              
  digitalWrite(13, LOW);    // turn the LED off
  delay(100);
  }

  delay(1000);  // Delay added to make serial more reliable
  
  Serial.begin(9600);
  while (! Serial); // Wait until Serial is ready
  Serial.println("Awake");  
  

  

}


// This gets set as the default handler, and gets called when no other command matches.
void unrecognized(SerialCommand this_sCmd) {
  SerialCommand::CommandInfo command = this_sCmd.getCurrentCommand();
  this_sCmd.print("Did not recognize \"");
  this_sCmd.print(command.name);
  this_sCmd.println("\" as a command.");
}


void alarmMatch() // Do something when interrupt called
{
  
}