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標題: avr單片機雙通信C程序 [打印本頁]

作者: admin 時間: 2013-6-14 18:20
標題: avr單片機雙通信C程序
將下面2個程序分別燒錄進2個單片機中.

單片機U1
//ICC-AVR application builder : 2013-6-14 10:17:58
// Target : M16
// Crystal: 8.0000Mhz
#include <iom16v.h>
#include <macros.h>
#define LED1_ON PORTD|=(1<<PD4)
#define LED1_OFF PORTD&=~(1<<PD4)
#define LED2_ON PORTD|=(1<<PD5)
#define LED2_OFF PORTD&=~(1<<PD5)
//共陽極數碼管
unsigned char table[]={0XC0,0XF9,0XA4,0xB0,0x99,0x92,0x82,0xF8,0X80,0X90,0X88,0X83,0XC6,0XA1,0X86,0X8e};
unsigned char count=0,count_h,count_l;
unsigned char a=0,cnt,cnt1;
unsigned char key,count_temp;
void port_init(void)
{
 PORTA = 0xFF;
 DDRA  = 0x00;
 PORTB = 0xFF;
 DDRB  = 0x00;
 PORTC = 0xFF; //m103 output only
 DDRC  = 0xFF;
 PORTD = 0xFF;
 DDRD  = 0x32;
}
//TIMER0 initialize - prescale:256
// WGM: Normal
// desired value: 0.005Sec
// actual value:  0.005Sec (0.2%)
void timer0_init(void)
{
 TCCR0 = 0x00; //stop
 TCNT0 = 0x64; //set count
 OCR0  = 0x9C;  //set compare
 TCCR0 = 0x04; //start timer
}
#pragma interrupt_handler timer0_ovf_isr:iv_TIM0_OVF
void timer0_ovf_isr(void)
{
    a++;
 TCNT0 = 0x64; //reload counter value
}
//UART0 initialize
// desired baud rate: 9600
// actual: baud rate:9615 (0.2%)
void uart0_init(void)
{
 UCSRB = 0x00; //disable while setting baud rate
 UCSRA = 0x00;
 UCSRC = BIT(URSEL) | 0x06;
 UBRRL = 0x33; //set baud rate lo
 UBRRH = 0x00; //set baud rate hi
 UCSRB = 0x98;
}
#pragma interrupt_handler uart0_rx_isr:iv_USART0_RXC
void uart0_rx_isr(void)
{
 //uart has received a character in UDR
    unsigned char udr0;
 udr0=UDR;
 count_temp=udr0;
}
//call this routine to initialize all peripherals
void init_devices(void)
{
 //stop errant interrupts until set up
 CLI(); //disable all interrupts
 port_init();
 timer0_init();
 uart0_init();
 MCUCR = 0x00;
 GICR  = 0x00;
 TIMSK = 0x01; //timer interrupt sources
 SEI(); //re-enable interrupts
 //all peripherals are now initialized
}
//發送數據uart0_TX
//函數功能：把要發送的數據data送到發送數據緩存器UDR中，然后發送出去
void uart0_TX(unsigned char data)
{
     while(!(UCSRA&(1<<UDRE)));
  UDR=data;
}
//8M晶振頻率下的延時一毫秒
void delay(unsigned int k)
{
    unsigned int m,n;
 for(m=0;m<k;m++)
 {
     for(n=0;n<1140;n++)
  {;}
 }
}
//數碼管顯示函數
void display(void)
{
    count_h=count/10;
 count_l=count%10;
 PORTC=table[count_h];
 LED1_ON;
 delay(1);//這個延時很重要，不加的話CUP運行過快將會導致LED數碼管無法顯示；
 LED1_OFF;
 PORTC=table[count_l];
 LED2_ON;
 delay(1);
 LED2_OFF;
}
//主函數
void main(void)
{
    init_devices();
 while(1)
 {
     key=PINB;
  uart0_TX(key);
  display();
  switch(count_temp)
  {
      case 1: TIMSK = 0x01;break;
   case 2: TIMSK = 0x00;break;
   case 3: count=0X00;TIMSK = 0x01;break;
  }
  if(a==150)
  {
      a=0;
   if(count==59)
   { count=0; }
   else { count++; }
  }
 }
}

///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
單片機U2

 //ICC-AVR application builder : 2013-6-14 10:31:18
// Target : M16
// Crystal: 8.0000Mhz
#include <iom16v.h>
#include <macros.h>
unsigned char led_dis;
unsigned char count_temp,cnt1,cnt=1;
void port_init(void)
{
 PORTA = 0x00;
 DDRA  = 0x00;
 PORTB = 0xFF;
 DDRB  = 0xFF;
 PORTC = 0x00; //m103 output only
 DDRC  = 0x00;
 PORTD = 0xFF;
 DDRD  = 0x02;
}
//UART0 initialize
// desired baud rate: 9600
// actual: baud rate:9615 (0.2%)
void uart0_init(void)
{
 UCSRB = 0x00; //disable while setting baud rate
 UCSRA = 0x00;
 UCSRC = BIT(URSEL) | 0x06;
 UBRRL = 0x33; //set baud rate lo
 UBRRH = 0x00; //set baud rate hi
 UCSRB = 0x98;
}
#pragma interrupt_handler uart0_rx_isr:iv_USART0_RXC
void uart0_rx_isr(void)
{
 //uart has received a character in UDR
 unsigned char udr0;
   udr0=UDR;
   led_dis=udr0;
}
#pragma interrupt_handler int0_isr:iv_INT0
void int0_isr(void)
{
 //external interupt on INT0
    cnt++;
 if(cnt==1)
 {  
     count_temp=1;
    }
 else if(cnt==2)
 {
     count_temp=2;
  cnt=0;
 }
}
#pragma interrupt_handler int1_isr:iv_INT1
void int1_isr(void)
{
 //external interupt on INT1
     count_temp=3;
}
//call this routine to initialize all peripherals
void init_devices(void)
{
 //stop errant interrupts until set up
 CLI(); //disable all interrupts
 port_init();
 uart0_init();
 MCUCR = 0x0A;
 GICR  = 0xC0;
 TIMSK = 0x00; //timer interrupt sources
 SEI(); //re-enable interrupts
 //all peripherals are now initialized
}
//發送數據函數
void USART_TX(unsigned char data)
{
    while(!(UCSRA&(1<<UDRE)));
 UDR=data;
}
//主函數
void main(void)
{
    init_devices();
 while(1)
 {
     cnt1=count_temp;
  USART_TX(cnt1);
  PORTB=led_dis;
 }
}

作者: 風暴下的小草 時間: 2015-7-27 17:20
大神：這個方案能做嗎？
硬件：
二套AVR電路板，每套電路板有一個AVR單片機，四位液晶顯示電路，一個蜂鳴報警電路，一個振動電路，二個遙控接收放大電路，一個電源指示電路，一個狀態指示燈電路，一個晶振電路，一個高電平復位電路，
編程要求：
二個遙控器交替按下，按下時間在0.3左右（0.25到0.35之間）A遙控器按下0.3左右停頓0.055秒左右B遙控器按下0.3左右停頓0.055秒左右，也就是說A遙控器不發送紅線信號到B遙控器發送紅外線信號的時間不能大于0.07秒（如0.071秒）蜂鳴器就報一下警，顯示器數字就加1。小于0.04秒振動器振動一下。
遙控器按下的時間0.3秒左右單片機不用管，單片機只控制A遙控器抬起到B遙控器按下的時間和B遙控器抬起到A遙控器按下的時間。

作者: 風暴下的小草 時間: 2015-7-27 17:24
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作者: 風暴下的小草 時間: 2015-8-11 20:51

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