/*
  Blink_lp_BLE
  Turns on an LED on for one second, then off for one second, repeatedly.
  (c)2018 Forward Computing and Control Pty. Ltd.
  This example code is in the public domain.
*/

#include <lp_BLESerial.h>
// Pin 13 has an LED connected on most Arduino boards, including NanoV2
int led = 13;
bool ledOn = false;
lp_timer ledTimer;
const unsigned long DELAY_TIME = 1000; // ms == 1sec
lp_BLESerial ble;

// the setup routine runs once when you press reset:
void setup() {
  // initialize the digital pin as an output.
  pinMode(led, OUTPUT);
  ble.setName("Led Control"); // set advertised name, default name is "Nordic BLE UART"
  ble.begin(); // start advertising and be ready to accept connections
  ledTimer.startTimer(DELAY_TIME, handleLedTimer);
}

void loop() {
  sleep(); // just sleep here waiting for the timer to trigger
  // check for new BLE cmd  'a' starts blinking, 'b' stops blinking
  while (ble.available() ) {
    int i = ble.read();
    if ('a' == i) {
      ledTimer.startTimer(DELAY_TIME, handleLedTimer); // start blinking
    } else if ('b' == i) {
      ledTimer.stop();    // stop blinking
    }
  }
}

void handleLedTimer() {
  ledOn = !ledOn; // toggle state
  if (ledOn) {
    digitalWrite(led, HIGH);   // turn the LED on (HIGH is the voltage level)
  } else {
    digitalWrite(led, LOW);    // turn the LED off by making the voltage LOW
  }
}