control._c

Atmega8

//ICC-AVR application builder : 2006-12-10 17:22:46
// Target : M8
// Crystal: 8.0000Mhz
//ICC-AVR application builder : 2006-12-10 21:46:41
// Target : M8
// Crystal: 8.0000Mhz

#include <iom8v.h>
#include <macros.h>
long Ddummy,Counter_MotorSpeedPulse,Counter_IRPulse,Settings_IRTopValue;
char Settings_PrintQuality;
const FTC2 =64;

void port_init(void)
{
 PORTB = 0x00;
 DDRB  = 0xFF;
 PORTC = 0x7F; //m103 output only
 DDRC  = 0x00;
 PORTD = 0xFF;
 DDRD  = 0x00;
}

//TIMER1 initialisation - prescale:1
// WGM: 4) CTC, TOP=OCRnA
// desired value: 1KHz
// actual value:  1.000KHz (0.0%)
void timer1_init(void)
{
 TCCR1B = 0x00; //stop
 TCNT1  = 0x00; //setup
 ICR1H  = 0x1F;
 ICR1L  = 0x3F;
 OCR1A = FTC2*Settings_PrintQuality;    //每组Settings_PrintQuality个墨滴选一个充电
 OCR1B = FTC2/2;                        //充电脉宽是墨滴周期时间的一半，充电相位为0，充电好坏由断点调整
 TCCR1A = 0x50;
 TCCR1B = 0x09; //start Timer
}
//
#pragma interrupt_handler timer1_compa_isr:7   
void timer1_compa_isr(void)   //开始一个新的充电墨滴时PB1开始产生一个下降沿或上升沿
{   //compare occured TCNT1=OCR1A
    //if(PINB1==0){   //如果PB1是低电平，就开始一个新的DA转换
	//   ;
	//}
}

#pragma interrupt_handler timer1_compb_isr:8
void timer1_compb_isr(void)   //停止充电时刻，PB2开始产生上升沿或下降沿
{
 //compare occured TCNT1=OCR1B
}
//

//TIMER2 initialisation - prescale:1
// WGM: Normal
// desired value: 62.5KHz
// actual value: 62.5KHz (0.0%)
void timer2_init(void)
{
 TCCR2 = 0x00; //stop
 ASSR  = 0x00; //set async mode
 TCNT2 = 0x00; //setup
 OCR2  = FTC2; //0x40;振荡频率的分频值，8M－64，4M－32 
 TCCR2 = 0x19; //CTC 模式
}

#pragma interrupt_handler int0_isr:2
void int0_isr(void)  //external interupt on INT0  记录电机速度
{
     Counter_MotorSpeedPulse++;
	 if(Counter_MotorSpeedPulse>1000){
               if(PINB5>0){PORTB &=223;} //PB5脚置低电平
	           else{PORTB |=32;} //PB5脚置高电平
	    Counter_MotorSpeedPulse =0;
		//计算并显示电机速度
	 }
}

#pragma interrupt_handler int1_isr:3
void int1_isr(void) //external interupt on INT1   记录光电开关的触发脉冲
{
     Counter_IRPulse++;
	 if(Counter_IRPulse >= Settings_IRTopValue){
               if(PINB6>0){PORTB &=191;} //PB6脚置低电平
	           else{PORTB |=64;} //PB6脚置高电平
	    Counter_IRPulse=0;
		//计算并触发打印按钮
	 }
}

//call this routine to initialise all peripherals
void init_devices(void)
{
 //stop errant interrupts until set up
 CLI(); //disable all interrupts
 port_init();
 timer2_init();
 timer1_init();

 MCUCR = 0x0F;
 GICR  = 0xC0;
 TIMSK = 0x18; //timer interrupt sources
 SEI(); //re-enable interrupts
 //all peripherals are now initialised
}

void main()
{
   Settings_IRTopValue = 1000;        //光电开关触发Settings_IRTopValue次后就开始打印一条信息 
   Settings_PrintQuality = 10;     //10个墨滴选一个充电
   Counter_MotorSpeedPulse =0;
   Counter_IRPulse =0;
   
   init_devices();
}