自收自发文件清单.doc

头文件：can_selfdef.h/对管脚分配进行了定义/对子函数进行了声明# define uchar unsigned char# define uint unsigned int# define NOP5_nop_();_nop_();_nop_();_nop_();_nop_();/*延时5us*/#define N_can 13/一帧字节数bit TXD_flag = 0;/ 若为1，要求发送处理bit RXD_flag = 0; /有无数据可以接收；无，有uchar code led=0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f,0x00;/ 0, 1, 2, 3, 4, 5uchar RX_buffer13; /接收的数据uchar TX_buffer13; /接收的数据uchar Txd_data = 0;/CAN总线要发送的数据，也是要在数码管1-2位置显示的数据uchar Rxd_data= 0;/CAN总线要接收的数据，也是要在数码管3-4位置显示的数据/*P2 口分配*/sbit LED_RED = P21;sbit LED_GRE = P22;sbit SJA_RST = P23;/SJA1000复位管脚sbit SJA_CS = P20;/SJA1000片选管脚/*CAN总线SJA1000寄存器地址定义（用的是PeliCAN模式，扩展帧EFF模式）*/#define MODR (*(unsigned char volatile xdata *)0xFE00) / 模式寄存器#define CMR (*(unsigned char volatile xdata *)0xFE01) / 命令寄存器#define SR (*(unsigned char volatile xdata *)0xFE02) / 状态寄存器#define IR (*(unsigned char volatile xdata *)0xFE03) / 中断寄存器#define IER (*(unsigned char volatile xdata *)0xFE04) / 中断使能寄存器#define BTR0 (*(unsigned char volatile xdata *)0xFE06) / 总线定时寄存器0 ；总线波特率的选择#define BTR1 (*(unsigned char volatile xdata *)0xFE07) / 总线定时寄存器1 ；总线波特率的选择#define OCR (*(unsigned char volatile xdata *)0xFE08) / 输出控制寄存器#define ACR (*(unsigned char volatile xdata *)0xFE10) / #define ACR1 (*(unsigned char volatile xdata *)0xFE11) / #define ACR2 (*(unsigned char volatile xdata *)0xFE12) / #define ACR3 (*(unsigned char volatile xdata *)0xFE13) /接收代码（0x16_0x19）；接收过滤位的选择*复位模式#define AMR (*(unsigned char volatile xdata *)0xFE14) / #define AMR1 (*(unsigned char volatile xdata *)0xFE15) / #define AMR2 (*(unsigned char volatile xdata *)0xFE16) / #define AMR3 (*(unsigned char volatile xdata *)0xFE17) / 掩码（0x20_0x23）; 接收过滤位的选择*复位模式#define CDR (*(unsigned char volatile xdata *)0xFE1F) / 时钟分频器#define ALC (*(unsigned char volatile xdata *)0xFE0B) / 仲裁丢失捕捉寄存器#define ECC (*(unsigned char volatile xdata *)0xFE0C) / 误码捕捉寄存器#define TBSR (*(unsigned char volatile xdata *)0xFE10) /发送缓冲器地址(0x16_0x28)#define TBSR1 (*(unsigned char volatile xdata *)0xFE11) / #define TBSR2 (*(unsigned char volatile xdata *)0xFE12) / #define TBSR3 (*(unsigned char volatile xdata *)0xFE13) /#define TBSR4 (*(unsigned char volatile xdata *)0xFE14) / #define TBSR5 (*(unsigned char volatile xdata *)0xFE15) /#define TBSR6 (*(unsigned char volatile xdata *)0xFE16) /#define TBSR7 (*(unsigned char volatile xdata *)0xFE17) /#define TBSR8 (*(unsigned char volatile xdata *)0xFE18) /#define TBSR9 (*(unsigned char volatile xdata *)0xFE19) /#define TBSR10 (*(unsigned char volatile xdata *)0xFE1A) /#define TBSR11 (*(unsigned char volatile xdata *)0xFE1B) /#define TBSR12 (*(unsigned char volatile xdata *)0xFE1C) /#define RBSR (*(unsigned char volatile xdata *)0xFE10) /接收缓冲器首地址(0x16_0x28)#define RBSR1 (*(unsigned char volatile xdata *)0xFE11) / #define RBSR2 (*(unsigned char volatile xdata *)0xFE12) / #define RBSR3 (*(unsigned char volatile xdata *)0xFE13) /#define RBSR4 (*(unsigned char volatile xdata *)0xFE14) / #define RBSR5 (*(unsigned char volatile xdata *)0xFE15) /#define RBSR6 (*(unsigned char volatile xdata *)0xFE16) /#define RBSR7 (*(unsigned char volatile xdata *)0xFE17) /#define RBSR8 (*(unsigned char volatile xdata *)0xFE18) /#define RBSR9 (*(unsigned char volatile xdata *)0xFE19) /#define RBSR10 (*(unsigned char volatile xdata *)0xFE1A) /#define RBSR11 (*(unsigned char volatile xdata *)0xFE1B) /#define RBSR12 (*(unsigned char volatile xdata *)0xFE1C) /void CPU_init(void);/CPU初始化子函数void CAN_init( void ); /初始化CAN总线芯片void CAN_TXD( void ); /CAN发送子函数void Rxd_deal(void);/接收处理函数void Txd_deal(void);/发送处理函数void Delay(uchar delay_time);/延时子函数void led_seg8();/显示子函数头文件：reg52.h#ifndef _REG52_H_#define _REG52_H_/* BYTE Registers */sfr P0 = 0x80;sfr P1 = 0x90;sfr P2 = 0xA0;sfr P3 = 0xB0;sfr PSW = 0xD0;sfr ACC = 0xE0;sfr B = 0xF0;sfr SP = 0x81;sfr DPL = 0x82;sfr DPH = 0x83;sfr PCON = 0x87;sfr TCON = 0x88;sfr TMOD = 0x89;sfr TL0 = 0x8A;sfr TL1 = 0x8B;sfr TH0 = 0x8C;sfr TH1 = 0x8D;sfr IE = 0xA8;sfr IP = 0xB8;sfr SCON = 0x98;sfr SBUF = 0x99;/* 8052 Extensions */sfr T2CON = 0xC8;sfr RCAP2L = 0xCA;sfr RCAP2H = 0xCB;sfr TL2 = 0xCC;sfr TH2 = 0xCD;/* BIT Registers */* PSW */sbit CY = PSW7;sbit AC = PSW6;sbit F0 = PSW5;sbit RS1 = PSW4;sbit RS0 = PSW3;sbit OV = PSW2;sbit P = PSW0; /8052 only/* TCON */sbit TF1 = TCON7;sbit TR1 = TCON6;sbit TF0 = TCON5;sbit TR0 = TCON4;sbit IE1 = TCON3;sbit IT1 = TCON2;sbit IE0 = TCON1;sbit IT0 = TCON0;/* IE */sbit EA = IE7;sbit ET2 = IE5; /8052 onlysbit ES = IE4;sbit ET1 = IE3;sbit EX1 = IE2;sbit ET0 = IE1;sbit EX0 = IE0;/* IP */sbit PT2 = IP5;sbit PS = IP4;sbit PT1 = IP3;sbit PX1 = IP2;sbit PT0 = IP1;sbit PX0 = IP0;/* P3 */sbit RD = P37;sbit WR = P36;sbit T1 = P35;sbit T0 = P34;sbit INT1 = P33;sbit INT0 = P32;sbit TXD = P31;sbit RXD = P30;/* SCON */sbit SM0 = SCON7;sbit SM1 = SCON6;sbit SM2 = SCON5;sbit REN = SCON4;sbit TB8 = SCON3;sbit RB8 = SCON2;sbit TI = SCON1;sbit RI = SCON0;/* P1 */sbit T2EX = P11; / 8052 onlysbit T2 = P10; / 8052 only /* T2CON */sbit TF2 = T2CON7;sbit EXF2 = T2CON6;sbit RCLK = T2CON5;sbit TCLK = T2CON4;sbit EXEN2 = T2CON3;sbit TR2 = T2CON2;sbit C_T2 = T2CON1;sbit CP_RL2 = T2CON0;#endif/功能描述：/ INT0按键程序+显示程序+CAN自收发程序 /数码管1-2（从右至左）显示（十进制）本节点计数结果，数码管3-4显示（十进制）接收到的数据 /CAN主要参数: /PeliCAN模式，扩展帧EFF模式 / 29位标示码结构： / 发送数据结构：计数结果 / 接收数据结构: 待显示数据 / 本节点的地址: 0x01,0x02,0x03,0xff;（ACR03） /验收屏蔽寄存器：0xff,0xff,0xff,0xff;（AMR03）可以接收全部节点的数据 / 报文标识符：0x01,0x02,0x03,0xff;C语言文件：Can_self.c#include #include #include sfr LedPort = 0x80; /段选段P0sfr LedCtrl = 0xa0; /位选段P2uchar DisBuff4;void INT0_Counter( void ) interrupt 0 using 1/INT0按键为计数按键 EA = 0; Txd_data+; /存储计数结果，并为待发送的数据 TXD_flag = 1;/要发送数据标志位 EA = 1;void CAN_RXD( void ) interrupt 2/接收数据函数，在中断服务程序中调用 uchar data Judge;uchar data CanDataLength;/报文数据长度变量unsigned char volatile xdata *p;/外部寄存器指针uchar i; EA = 0;/关CPU中断 IE0 = 0; Judge = IR; if( Judge & 0x01) /IR.0 = 1 接收中断CanDataLength = RBSR & 0x0f;/CAN数据报文的数据长度p = &RBSR;for( i=0; i = (CanDataLength + 5); i+ ) RX_bufferi = *p+; RXD_flag = 1;/置有接收标志 CMR = 0X04; Judge = ALC;/释放仲裁随时捕捉寄存器 Judge = ECC;/释放错误代码捕捉寄存器 IER = 0x01;/ .0=1-接收中断使能； EA = 1;/打开CPU中断void main(void)CPU_init();/CPU初始化 CAN_init( ); /SJA1000初始化，对 SJA1000寄存器的读写是采用外部寄存器寻址方式，所以不需要程序单独控制片选有效无效 _nop_(); _nop_(); while(1) _nop_(); _nop_(); Rxd_deal();/接收处理程序 Txd_deal();/发送处理程序 led_seg8(); / led_seg7(3,Rxd_data); /*CPU初始化函数*void CPU_init(void)/初始化CPU SJA_RST = 0;/CAN总线复位管脚有效Delay(20 ); SJA_RST = 1;/CAN总线复位管脚无效 SJA_CS = 0;/CAN总线片选有效 EX1 = 1; IT1 = 0;/CAN总线接收中断 IT0 = 1;/外部中断0负边沿触发 EX0 = 1;/打开外部中断0 EA = 1; /打开总中断 /SJA_CS = 1;/CAN总线片选无效，使对数据总线的操作不会影响SJA1000。/*处理函数*void Rxd_deal(void)/ 接收处理程序/ if( RXD_flag ) EA = 0;/关闭CPU中断 RXD_flag = 0; Rxd_data = RX_buffer5;if (RX_buffer5=0x25) LED_GRE=0;if (RX_buffer5=0x26) LED_GRE=1; EA = 1; / 接收处理程序/void Txd_deal(void)/发送处理函数，主要是准备数据，并且调用发送函数 if( TXD_flag = 1 ) _nop_(); TXD_flag = 0; TX_buffer5 = Txd_data;/ CAN_TXD(); _nop_(); _nop_(); /*处理函数*/*CAN子函数*void CAN_init( void )/SJA1000 的初始化 uchar bdata Judge; uchar ACRR4; uchar AMRR4; ACRR0 = 0x01; ACRR1 = 0x02; ACRR2 = 0x03; ACRR3 = 0xff;/接收代码寄存器 AMRR0 = 0x00; AMRR1 = 0X00; AMRR2 = 0x00; AMRR3 = 0xff;/接收屏蔽寄存器,接收任何标识符的报文 do / .0=1-reset MODRe,进入复位模式，以便设置相应的寄存器 /防止未进入复位模式，重复写入 MODR = 0x09;Judge = MODR ; while( !(Judge & 0x01) ); CDR = 0x88;/ CDR.3=1-时钟关闭, .7=0-basic CAN, .7=1-Peli CAN BTR0 = 0x31; BTR1 = 0x1c;/总线波特率设定 IER = 0x01;/ .0=1-接收中断使能； .1=0-关闭发送中断使能 OCR = 0xaa;/ 配置输出控制寄存器 CMR = 0x04;/释放接收缓冲器 ACR = ACRR0; ACR1 = ACRR1; ACR2 = ACRR2; ACR3 = ACRR3;/初始化标示码 AMR = AMRR0; AMR1 = AMRR1; AMR2 = AMRR2; AMR3 = AMRR3;/初始化掩码MODR=0x04; do /确保进入自接收模式MODR = 0x04;Judge = MODR; while( !(Judge & 0x04) );/SJA1000 的初始化void CAN_TXD( void ) uchar data Judge; uchar data TX_buffer N_can ;/初始化标识符头信息 TX_buffer0 = 0x81;/报文信息；.7=0扩展帧；.6=0数据帧; .30=1数据长度 TX_buffer1 = 0x01;/报文标识符 TX_buffer2 = 0x02;/ TX_buffer3 = 0x03;/ TX_buffer4 = 0xff;/初始化标识符头信息/初始化发送数据单元 TX_buffer5 = Txd_data;/初始化数据信息 EA = 0; /关中断 do Judge = SR; LED_RED = 0;/ while( Judge & 0x10 ); /SR.4=1 正在接收，等待 do Judge = SR; LED_RED = 0;/ while(!(Judge & 0x08); /SR.3=0,发送请求未处理完，等待 do Judge = SR; LED_RED = 0;/ while(!(Judge & 0x04); /SR.2=0,发送缓冲器被锁。等待 LED_RED = !LED_RED; / LED_GRE = !LED_GRE;/灯闪烁 TBSR = TX_buffer0; TBSR1 = TX_b