基于avr atmega的ADC和PWM，lcd1602程序

#include<iom128v.h> #include"1602.h" #include"lcd1602.h" #define uchar unsigned char #define uint unsigned int uchar F_out[]={"Out:1KHZ . %"}; uchar adc_1[]={"ADC_1: . V"}; /*uchar get_key(void) { unsigned char i; static unsigned char j;//按键记录 PORTD|=0x0c;//pd2,pd3上拉电阻 DDRD&=0xf3;//pd2,pd3为输入 if((PIND&0x04)==0)i='A'; else if((PIND&0x08)==0)i='B'; else i=0x00; if (i == 0x00)//无有效按键按下 { j = 0x00;//清除按键记录 return 0x00;//程序退出 } if (j == 0x00) //为新按键 {j = i;//保存本次采样结果 s_ms(10);//去按键颤抖 if((PIND&0x04)==0)i='A'; else if((PIND&0x08)==0)i='B'; else i=0x00; if(i == j) {return i;} } return 0x00; }*/ void init_timer0(void) { DDRB|=0x10;//OC0匹配输出 TCNT0=0x00;//清除定时器值 //TCCR0=0x6d;//快速PWM模式,匹配时OC0清零,top时置数,系统时钟1024分频 频,输出比较匹配清除定时器值 //OCR0=128;//128;//OCR0置初值,占空比50% 0x80 } /*void F_set(void) { static unsigned char i; if(i!=5)i++; else i=1; switch(i)//频率选择 { case 1: { TCCR0=0x6d; LCD_write_string(6,0," 28HZ"); break; } //1024分频,F=28HZ case 2: { TCCR0=0x6c; LCD_write_string(6,0," 112HZ"); break; }// 256分频,F=112HZ case 3: { TCCR0=0x6b; LCD_write_string(6,0," 450HZ"); break; } // 64分频,F=450HZ case 4: { TCCR0=0x6a; LCD_write_string(6,0," 7200HZ"); break; } // 8分频,F=7200HZ case 5: { TCCR0=0x69; LCD_write_string(6,0,"28800HZ"); break; } // 无分频,F=28800HZ default:break; } } void R_set(void) { static unsigned char i; if(i!=9)i++; else i=1; switch(i)//频率选择 { case 1: { OCR0=256*0.1;//0x0a;//占空比10% LCD_write_string(13,0,"10%"); break; } case 2: { OCR0=256*0.2;//0x14;//占空比20% LCD_write_string(13,0,"20%"); break; } case 3: { OCR0=256*0.3;//0x1e;//占空比30% LCD_write_string(13,0,"30%"); break; } case 4: { OCR0=256*0.4;//0x28;//占空比40% LCD_write_string(13,0,"40%"); break; } case 5: { OCR0=0x80;//占空比50% LCD_write_string(13,0,"50%"); break; } case 6: { OCR0=256*0.6;//0x3c;//占空比60% LCD_write_string(13,0,"60%"); break; } case 7: { OCR0=256*0.7;//0x46;//占空比70% LCD_write_string(13,0,"70%"); break; } case 8: { OCR0=256*0.8;//0x50;//占空比80% LCD_write_string(13,0,"80%"); break; } case 9: { OCR0=256*0.9;//0x5a;//占空比90% LCD_write_string(13,0,"90%"); break; } default:break; } }*/ //主函数 main() { uchar ten_1,ten_2,ten_3,ten_4,k,ten_5,ten_6,ten_7,ten_8,ten_9;//key; uint adc_data0,adc_l0,adc_h0,adc_data1,adc_l1,adc_h1,adc_value[6],adc_min,adc_max; //初始化端口 DDRA=0xff; PORTA=0x00; DDRB=0xff; PORTB=0x00; DDRC=0xff; PORTC=0x00; DDRD=0xff; PORTD=0x00; DDRF=0xff; PORTF=0x00; DDRG=0xff; PORTG=0x00; init_timer0(); //1602初始化 LcdInit(); //LCD_write_string(0,0,"F_out: 28HZ50%"); WriteChar(1,0,16,F_out); WriteChar(2,2,12,adc_1); while(1) { for(k=0;k<6;k++) { s_ms(600); adc_min=adc_value[0]; adc_max=adc_value[0]; if(adc_min>adc_value[k]) adc_min=adc_value[k]; if(adc_max<adc_value[k]) adc_max=adc_value[k]; //取ADC_1 ADCSRA=0x00; ADMUX=0x46; ADCSRA=(1<<ADEN)|(1<<ADSC)|(1<<ADFR)|0x07; s_ms(500); adc_l1=ADCL; adc_h1=ADCH; adc_value[k]=adc_h1<<8|adc_l1; adc_data1=(adc_value[0]+adc_value[1]+adc_value[2]+adc_value[3]+adc_value[4]+adc_value[5]-adc_max-adc_min)*1.11631345490389;//35; TCCR0=0x6b;//0x6d;//快速PWM模式,匹配时OC0清零,top时置数,系统时钟1024分频 频,输出比较匹配清除定时器值 OCR0=adc_data1*0.056512141280353200883002207505519;//0.028;//128;//OCR0置初值,占空比50% 0x80 //显示ADC1 ten_4=(adc_data1)/1000; ten_3=(adc_data1-(ten_4*1000))/100; ten_2=(adc_data1-(ten_4*1000)-(ten_3*100))/10; ten_1=adc_data1-(ten_4*1000)-(ten_3*100)-ten_2*10; ten_1+=0x30; ten_2+=0x30; ten_3+=0x30; ten_4+=0x30; WriteNum(2,8,(ten_4)); WriteNum(2,10,(ten_3)); WriteNum(2,11,(ten_2)); WriteNum(2,12,(ten_1)); ten_9=(OCR0)/255; ten_8=(OCR0-(ten_9*255))/25.5; ten_7=(OCR0-(ten_9*255)-(ten_8*25.5))/2.55; ten_6=OCR0-(ten_9*255)-(ten_8*25.5)-ten_7*2.55; ten_5=OCR0-(ten_9*255)-(ten_8*25.5)-(ten_7*2.55)-ten_6*0.255; ten_5+=0x30; ten_6+=0x30; ten_7+=0x30; ten_8+=0x30; ten_9+=0x30; WriteNum(1,9,(ten_9)); WriteNum(1,10,(ten_8)); WriteNum(1,11,(ten_7)); WriteNum(1,13,(ten_6)); WriteNum(1,14,(ten_5)); /*key=get_key(); if(key=='A')F_set(); if(key=='B')R_set();*/} } }