//*****************************************************************************
// File Name    : a2dtest.c
// 
// Title                : Windlogger
// Revision          : 1.0
// Notes                :       
// Target MCU   : Atmel AVR series
// Editor Tabs  : 4
// 
// Revision History:
// When   Who                  Description of change
// -----------  -----------       -----------------------
// 20-Oct-2002  pstang        Created the program
// Oct - 2006 RifRaf changes stuff
//*****************************************************************************
 
//----- Include Files ---------------------------------------------------------
#include <avr/io.h>            // include I/O definitions (port names, pin names, etc)
#include <avr/signal.h>        // include "signal" names (interrupt names)
#include <avr/interrupt.h>     // include interrupt support
 
#include "global.h"            // include our global settings
#include "uart.h"              // include uart function library
#include "rprintf.h"           // include printf function library
#include "timer.h"             // include timer function library (timing, PWM, etc)
#include "a2d.h"               // include A/D converter function library
#include "vt100.h"             // include VT100 terminal support
#include "extint.h"	           // include external interrupt library

#define SetBit(BIT, PORT)        PORT |= (1<<BIT)
#define ClearBit(BIT, PORT)      PORT &= ~(1<<BIT)
#define IsHigh(BIT, PORT)       (PORT & (1<<BIT)) != 0
#define IsLow(BIT, PORT)        (PORT & (1<<BIT)) == 0
 
//global variables
unsigned int volts;       // Current value of Battery Volts
unsigned int shuntvolts;  // Current value of Shunt Volts
unsigned int mode;        // Dummy load on or off
volatile u16 Int0Count;
volatile u16 Int1Count;
u16 pulse;                 // Pulses per 3 Seconds
u16 windpulse;             // Windspeed Pulses per 3 seconds

// functions 
void SwitchToCharging(void);
void SwitchToLoad(void);
void rpmSetup(void);
void myInt0Handler(void);
void myInt1Handler(void);
 
//----- Begin Code ------------------------------------------------------------
 
int main(void)
{
        uartInit();
        uartSetBaudRate(4800);    // set UART speed to 9600 baud
        rprintfInit(uartSendByte);
        timerInit();
        a2dInit();
 
        vt100ClearScreen();
		//rprintf("hello");
            
        DDRC = 0x00;
        PORTC = 0x00;
 
        a2dSetPrescaler(ADC_PRESCALE_DIV64);
        a2dSetReference(ADC_REFERENCE_AVCC);
		rpmSetup();
        
        // use a2dConvert8bit(channel#) to get an 8bit a2d reading
        // use a2dConvert10bit(channel#) to get a 10bit a2d reading
 
        while (1)                 // do this until finished or broken
        {
        volts      = a2dConvert10bit(0);    // Get ADC Value
        shuntvolts = a2dConvert10bit(1);    // Get ADC Value
		// reset interrupt counters
		Int0Count = 0;
		Int1Count = 0;
		// wait 3 seconds
		timerPause(3000);
		// get counter values
		pulse = Int0Count;
		windpulse = Int1Count;
        if (volts > 580) { mode = 0; SwitchToLoad(); }
        if (volts < 540) { mode = 1;  SwitchToCharging(); }
            vt100SetCursorPos(1,1);
            rprintf("[<V>%d</V><A>%d</A><R>%d</R><S>%d</S><M>%d<M>]\r\n",volts,shuntvolts,pulse,windpulse,mode);
        } 
}
 
void rpmSetup(void)
{
	extintInit();
	extintConfigure(EXTINT0, EXTINT_EDGE_RISING);
	extintConfigure(EXTINT1, EXTINT_EDGE_RISING);
	extintAttach(EXTINT0, myInt0Handler);
	extintAttach(EXTINT1, myInt1Handler);
	sbi(GIMSK, INT0);
	sbi(GIMSK, INT1);
}

void SwitchToCharging(void) { 
  ClearBit(2, PORTC) ; 
  return;
}
 
void SwitchToLoad(void) { 
  SetBit(2, PORTC) ;
  return;
} 

void myInt0Handler(void)
{
	Int0Count++;
}

void myInt1Handler(void)
{
	Int1Count++;
}