hello.cpp

/* Basic embedded hello world -- blink a LED
   
   Compilation and device programming notes:
   http://coderlut.blogspot.com/2012/02/avr-compilation-and-device-programming.html

   sudo apt-get install avrdude gcc-avr avr-libc binutils-avr
   
   // Find out what your CPU is named both in code and on the command line
   avr-g++ -mlist-devices --target-help
   // Compile this
   avr-g++ -mmcu=attiny24a -Os hello.cpp -o hello.o
   // Convert it into a format avrdude can understand 
   avr-objcopy -j .text -j .data -O ihex  hello.o  hello.hex
   // program the chip:
   sudo avrdude -c usbtiny -p t24 -v -U flash:w:hello.hex
   
 */

#include "avrez.h"


// Hook a LED up to this pin: 5v->1k resistor->LED->pin
#ifdef PINOUT_ATmega48
#define LED_PIN pinB2  // B0 is on most chips but you can change this to any pin your chip has
#define ANALOG_PIN pinC0  // pinB3
#endif
#ifdef PINOUT_ATtiny13
#define LED_PIN pinB0
#define ANALOG_PIN pinB3
#endif
#ifdef PINOUT_ATtiny24
#define LED_PIN pinB0
#define ANALOG_PIN pinA0
#endif

#ifndef LED_PIN
#error You did not define pins for me to use!
#endif


void digitalTest()
{
  /* If a LED is connected to the pin (with resistor), it should show bright,off,bright,off,dim,off. */
  pinMode(LED_PIN,OUTPUT);
  digitalWrite(LED_PIN,1);
  _delay_ms(1000);
  digitalWrite(LED_PIN,0);
  _delay_ms(1000);
  pinToggle(LED_PIN);
  _delay_ms(1000);
  pinToggle(LED_PIN);
  _delay_ms(1000);  
  pinMode(LED_PIN,INPUT);
  pinPull(LED_PIN,UP);
  _delay_ms(1000);
  pinPull(LED_PIN,FLOAT);
  _delay_ms(1000);
}

void analogInputTest()
{
  AnalogInput.begin();
  pinMode(ANALOG_PIN,ANALOG_INPUT);

  pinMode(LED_PIN,OUTPUT);
  digitalWrite(LED_PIN,1);

  
  
  for (unsigned long int time=0;time<10000;)
    {
    uint16_t sample = analogInput(ANALOG_PIN);
    digitalWrite(LED_PIN,1);
    delay(1+(sample/2));    
    digitalWrite(LED_PIN,0);
    delay(1+(sample/2));
    time+= 2+sample;
    }
  digitalWrite(LED_PIN,0);
  AnalogInput.pause();
}

int main(void)
{
  while(1)
    {
      digitalTest();
      //analogInputTest();
    }
  return 0;
}