用普通LED灯传感器及数据传输的方法研究程序.doc

数据传输系统代码： 接收代码： #define F_CPU ？（各自电脑的CPU频率） #include avr/io.h #include util/delay.h #include string.h #include avr/interrupt.h #define TRUE 1 #define FALSE 0 #define SBIT(x,y) (x|=(1y)) #define CBIT(x,y) (x=~(1y)) #define BIT(x,y) (x(1y)) #define B_9600 51 #define LED_PORT PORTA #define LED_DDR DDRA #define LED_PIN PINA #define LED_N PA0 //LED+ #define LED_P PA1 //LED- #define LED_N_OUT() SBIT(LED_DDR, LED_N) #define LED_P_OUT() SBIT(LED_DDR, LED_P) #define LED_N_IN() CBIT(LED_DDR, LED_N) #define LED_P_IN() CBIT(LED_DDR, LED_P) #define LED_N_HIG() SBIT(LED_PORT, LED_N) #define LED_N_LOW() CBIT(LED_PORT, LED_N) #define LED_P_HIG() SBIT(LED_PORT, LED_P) #define LED_P_LOW() CBIT(LED_PORT, LED_P) #define PB_FUNC(x) (x[0] 4) #define PB_DATN(x) (x[0] 0x0F) void delay_ms(unsigned int); void port_init(void); void usart_init(unsigned int); unsigned char led_light_recv(void); unsigned char led_send_char(const unsigned char); void led_send_pack(const char, const void *, const char); unsigned char rs,rb,rn,ln,bn,ro,pack[18],rb_event; //=============================================== //名称：delay_ms //功能：毫秒延时 //参数：unsigned int 要延时的毫秒数 //返回：无 //备注：无 //=============================================== void delay_ms(unsigned int ) { unsigned int i; while(c--) { for(i=0;i100;i++) asm(“nop;”); } } //=============================================== //名称：usart_init //功能：串口初始化 //参数：unsigned int baud 波特率 //返回：无 //备注：无 //=============================================== void usart_init(unsigned int baud) { UBRRH = (unsigned char)(baud 8); UBRRL = (unsigned char)baud; UCSRB = (1RXEN)|(1TXEN); //接收器和发送器使能 UCSRC = (1URSEL)|(1USBS)|(1UCSZ0); //设置为8个数据位，1个停止位 } //=============================================== //名称：port_init //功能：端口初始化 //参数：无 //返回：无 //备注：无 //=============================================== void port_init(void) { PORTA = 0xFF; PORTB