//*****************************************************************************// 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 variablesunsigned int volts; // Current value of Battery Voltsunsigned int shuntvolts; // Current value of Shunt Voltsunsigned int pulse; // Pulses per Secondunsigned int windpulse; // Windspeed Pulses per secondunsigned int mode; // Dummy load on or offvoid 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;}