adc.rar_ADC 发送_adc 电压 串口

#include<iom16v.h> #include<macros.h> #include "abs.h" /* 七段译码字形表 */ /*const unsigned char tabel[]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90, 0x88,0x83,0xc6,0xa1,0x86,0x8e};*/ //放一个串口通讯时自己能看懂的数据简单处理 const unsigned char tabel[]={0x00,0x01,0x02,0x03,0x04,0x05,0x06,0x07,0x08,0x09,0x10,0x11,0x12,0x13,0x14,0x15}; /* 显示缓冲区 */ unsigned int d[]={0,0,0,0,0,0,0,0,0,0,0}; void port_init(void)//端口初始化 { PORTA = 0x00;DDRA = 0xff; PORTB = 0x00;DDRB = 0x00; PORTC = 0x00;DDRC = 0x00; PORTD = 0xff;DDRD = 0x00; DDRA =0xff&((~(1<<PA3))|(~(1<<PA6)) ); } void display() { USART_Transmit8(tabel[d[3]]); //送数据 delay_nms(10); USART_Transmit8(tabel[d[2]]); delay_nms(10); USART_Transmit8(tabel[d[1]]); delay_nms(10); USART_Transmit8(tabel[d[0]]); delay_nms(10); } unsigned int ad_con;//存放PA0的AD转换结果 /* 将AD结果转换成电压 */ #define vref 502 void adctovol(unsigned int adc) { unsigned int temp; unsigned char i; unsigned char *char_p; temp=(unsigned int)(((unsigned long)((unsigned long)adc*vref))/1024); for(i=0;i<3;i++) { d[i]=temp%10; temp=temp/10; } } /* AD转换程序 */ #pragma interrupt_handler adc_isr:15 void adc_isr(void) { unsigned int temp=0; while(temp<6) temp++; ad_con=ADC; ADCSR|=(1<<ADSC);//启动转换 } //将AD转换结果转换成电压数值 void main(void) { unsigned char i; port_init(); WDT_ON(); USART_InitM1681(9600); Red_LedON;Green_LedON; delay_nms(500); //延时1秒 Red_LedOFF; Green_LedOFF; USART_Transmit8(2); USART_Transmit8(0x0d); //发送一个回车 USART_Transmit8(0x0a); //发送一个换行 MCUCSR=0; //ADMUX=0x00;//0通道 ADMUX=0x03;//3 // ADMUX=0x06;//6 ADCSR=(1<<ADEN)|(1<<ADSC)|(1<<ADIF)|(1<<ADIE)|0x06; SEI(); i=0; USART_Transmit_2();//发个Hello while(1) { if((i==127)|(i==0)) adctovol(ad_con);//降低AD结果刷新速率 display(); //使末位闪烁不太明显 Red_D1glint;delay_nms(500);//红绿灯交替亮灭 Green_D1glint;delay_nms(500); i++; } }