#include <oulib.h>

// Load the ISRs
#include "oulib_serial_buffered.h"

/*************************
 * USB Serial Connection *
 *************************/
#define SERIAL_PORT     0
#define SERIAL_BAUD     38400
#define SERIAL_BUFFER_SIZE   40

///////////////////////////////////////////////////////////////////////////
// File pointer for USB connection
FILE* fp0 = NULL;

///////////////////////////////////////////////////////////////////////////

///////////////////////////////////////////////////////////////////////////
int main(void)
{
  char c;
  uint8_t i;

  // LED on the Arduino
  DDRB = 0x80;

  // Flash the LED a few times
  PORTB ^= 0x80;
  delay_ms(100);
  PORTB ^= 0x80;
  delay_ms(100);
  PORTB ^= 0x80;
  delay_ms(100);
  PORTB ^= 0x80;
  delay_ms(100);

  // Initialize the serial port connected to the USB cable
  fp0 = serial_init_buffered(SERIAL_PORT, SERIAL_BAUD, SERIAL_BUFFER_SIZE, SERIAL_BUFFER_SIZE);

  // Initialize all interrupts
  sei();

  // Say 'hello'
  fprintf(fp0, "hello world\n\r");

  while(1){
    // Is there anything coming in from the serial port?
    if(serial_buffered_input_waiting(fp0)) {
      // Yes - read that character
      c = fgetc(fp0);

      // Report that we received this char
      fprintf(fp0, "Got character: %c %d\n\r", c, c);

      // Do something specific depending on which character it is
      switch(c)
	{
	case 'f':
	  // Flash the LED fast
	  for(i = 0; i < 8; ++i) {
	    PORTB ^= 0x80;
	    delay_ms(100);
	  };
	  break;       // Don't forget to terminate cases with breaks!
	case 's':
	  // Flash the LED slow
	  for(i = 0; i < 2; ++i) {
	    PORTB ^= 0x80;
	    delay_ms(1000);
	  };
	  break;

	};
    };
    // Default flash rate
    PORTB ^= 0x80;
    delay_ms(250);
  };

  return(0);

}