main._c

LTC2449 AD转换 LTC2449 AD转换 LTC2449 AD转换

//ICC-AVR application builder : 2007-5-17 下午 09:24:21
// Target : M169
// Crystal: 4.0000Mhz
#define _MAIN_C
#include <iom169v.h>
#include <macros.h>
#include <stdio.h>
//#include "LTC2449.h"
#include "main.h"
#include "uart.h"
#include "cs5532.h"
#define average_quantity 15	//平均个数

void delay_loop(unsigned int i)
{
	while(i){i--;}
}
void port_init(void)
{
 PORTA = 0xFF;
 DDRA  = 0xFF;
 PORTB = 0x7F;
 DDRB  = 0x80;
 PORTC = 0xFF; 
 DDRC  = 0xFF;
 PORTD = 0xFF;
 DDRD  = 0xFF;
 PORTE = 0xA7;
 DDRE  = 0x58;
 PORTF = 0x0F;
 DDRF  = 0x0F;
 PORTG = 0x17;
 DDRG  = 0x1F;
}

//TIMER1 initialize - prescale:1
// WGM: 0) Normal, TOP=0xFFFF
// desired value: 1mSec
// actual value:  1.000mSec (0.0%)
void timer1_init(void)
{
 TCCR1B = 0x00; //stop
 TCNT1H = 0xD4; //setup
 TCNT1L = 0xCE;
 OCR1AH = 0x2B;
 OCR1AL = 0x32;
 OCR1BH = 0x2B;
 OCR1BL = 0x32;
 ICR1H  = 0x2B;
 ICR1L  = 0x32;
 TCCR1A = 0x00;
 TCCR1C = 0x00;
 TCCR1B = 0x01; //start Timer
}

#pragma interrupt_handler timer1_ovf_isr:10
void timer1_ovf_isr(void)
{
 TCNT1H = 0xD4; //setup
 TCNT1L = 0xCE;
 mcu_loop_time++;	//主程序20mS循环用
 if (load_time <10000)
 	{
 		load_time++;	//下载数据定时用
 	}
}

//call this routine to initialize all peripherals
void init_devices(void)
{
 //stop errant interrupts until set up
 CLI(); //disable all interrupts
 port_init();
 timer1_init();
 uart0_init();

 TIMSK0 = 0x00; //timer interrupt sources
 TIMSK1 = 0x01; //timer interrupt sources
 TIMSK2 = 0x00; //timer interrupt sources
 PCMSK0 = 0x00; //pin change mask
 PCMSK1 = 0x00; //pin change mask
 EICRA  = 0x00;  //int0 setup
 SEI(); //re-enable interrupts
 //all peripherals are now initialized
}
//************读出8通道AD值*********************
void AD_conversion()
{
	unsigned char j, jj, c;//通道号,平均值序号,通道号
	unsigned long sum;
	static unsigned char average_l=0;//平均值个数
	static unsigned int average[8][average_quantity];	//求平均数
	unsigned char unlikeliness;	//内部循环,1mS检测
	for (j=0; j<5; j++)
		{
			unlikeliness = mcu_loop_time;
			c=j;
		//average[j][average_l] =	LTC2449_RW(c);	//读取AD值
		average[j][average_l] = CS5532_RW(c);
		sum = 0;
		for (jj=0; jj<average_quantity; jj++)	//求平均值
			{
				sum += average[j][jj];
			}
		send_data.AD_data[j] = sum/average_quantity;
		//send_data.AD_data[j] = average[j][average_l];
		while (unlikeliness == mcu_loop_time){;}//等待1ms
	}
	average_l++;
	if (average_l > (average_quantity-1)) average_l = 0;
}
//************取8个按键值************************
void pb_check()
{
	unsigned char k;
	k=PINB;
	k=k<<1;
	if((PINE&0B01111111)!=0)
		k|=1;
	else 
		k&=254;
		k ^= 0xff;
	send_data.exterior_switch=k;
}
void main(void)
{
	init_devices();
	//LTC2449_init();
	Init5532();
	relay_init();
	load_init();
	updating=0;
	while(1)
	{
		//主程序循环定时
		while(mcu_loop_time<20){;}
		mcu_loop_time=0;
		data_load_manage();
		if(updating==1)
			{
				//**********继电器刷新****************
				RELAY_out(&(Down_load.Relay_out[0]));
				//*********上传数据********************
				data_send();
			}
		pb_check();
		AD_sample(void);
		//AD_conversion();
	}
}