//*****************************************************************************
// File Name	: a2dtest.c
// 
// Title		: example usage of some avr library functions
// 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
//*****************************************************************************
 
//----- 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

#define NOS 500          // Define number of milliseconds between collects
#define NOC 30              // Define number of collects (1-512) between reset
#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 pulse;       // Pulses per Second
unsigned int windpulse;   // Windspeed Pulses per second
unsigned int mode;        // Dummy load on or off

void SwitchToCharging(void);
void SwitchToLoad(void);

//----- Begin Code ------------------------------------------------------------


int main(void)
{
 	uartInit();
	uartSetBaudRate(4800);		// set UART speed to 9600 baud
	rprintfInit(uartSendByte);
	timerInit();
	a2dInit();

	vt100ClearScreen();
	//vt100SetCursorPos(1,1);
	//rprintf("Hi i am alive \r\n");
	
	DDRC = 0x00;
	PORTC = 0x00;

	a2dSetPrescaler(ADC_PRESCALE_DIV64);
	a2dSetReference(ADC_REFERENCE_256V);
	
	// 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
        pulse      = a2dConvert10bit(2);    // Get ADC Value
        windpulse  = a2dConvert10bit(3);    // Get ADC Value
        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>0<M>]\r\n",volts,shuntvolts,pulse,windpulse);
        timerPause(NOS);      // pause for interval between checking routine
    } 
}

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

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