/**********************************************************************
* Authors: 
* MagSem
* Fork:
* Ole Dreessen
*
* Revisions:
* 1.0.0       01.03.2019      initial code
* 
* 
* Aim: If you want to connect only a battery to the MAX32620FTHR board
* and run any application, you have to initialize the boards
* PWR-hold-GPIO to be high.
* Otherwise the PMIC will shut down the system after few moments.
* This example will only work with connected battery and NO USB input!
* 
* Function: 
* Press Power-On-Button
*           v
* Do some Application stuff
*           v
* Goto Power-Off state        
* 
**********************************************************************/

//Pin Definitions
// µC Pin 18 -> connected to MAX77650 power hold input pin (A1)
#define MAX32620FTHR_PHLD 18
#define MAX32620FTHR_RLED 20  // User LED RED
#define MAX32620FTHR_GLED 21  // User LED GREEN
#define MAX32620FTHR_BLED 22  // User LED BLUE

void setup(void)
{
  // configure pin as output
  pinMode(MAX32620FTHR_PHLD, OUTPUT);
  // set output to HIGH to hold the power-on state
  digitalWrite(MAX32620FTHR_PHLD, HIGH);

  // Prepare the User LEDs
  pinMode(MAX32620FTHR_RLED, OUTPUT);
  pinMode(MAX32620FTHR_GLED, OUTPUT);
  pinMode(MAX32620FTHR_BLED, OUTPUT);
}

void loop(void)
{
  //Do some stuff and goto power off again
  digitalWrite(MAX32620FTHR_RLED, LOW ); // LED On - inverse 
  digitalWrite(MAX32620FTHR_GLED, HIGH);
  digitalWrite(MAX32620FTHR_BLED, HIGH);
  delay(1000);

  digitalWrite(MAX32620FTHR_RLED, HIGH);
  digitalWrite(MAX32620FTHR_GLED, LOW );
  digitalWrite(MAX32620FTHR_BLED, HIGH);
  delay(1000);

  digitalWrite(MAX32620FTHR_RLED, HIGH);
  digitalWrite(MAX32620FTHR_GLED, HIGH);
  digitalWrite(MAX32620FTHR_BLED, LOW );
  delay(1000);

  digitalWrite(MAX32620FTHR_RLED, LOW );
  digitalWrite(MAX32620FTHR_GLED, LOW );
  digitalWrite(MAX32620FTHR_BLED, LOW );
  delay(1000);

  // set output to LOW to goto power off again after some seconds  
  digitalWrite(MAX32620FTHR_PHLD, LOW );  
}