CAN总线的实现-SJA1000实例

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1、一、以下是我做的CAN节点的测试程序,实现两个节点传送数据，程序主要分三部分SJA1000的初始化,接收数据,发送数据./******************************************************函数原型：  bitSja_1000_Init(void)**功   能：  初始化SJA10000**入口参数:   无**返回值:          0：初始化成功     1：复位失败     2: 测试sja1000失败     3：设置失败     4：设置验收滤波器失败     5：设置波特率失败    ***********************

2、******************************/unsignedcharSja_1000_Init(void){ bits;  EA=0;  s=BCAN_ENTER_RETMODEL(); if(s==1)return1;    s=BCAN_CREATE_COMMUNATION();   if(s==1)return2;  s=BCAN_SET_OUTCLK(0xc0);//Pelican if(s==1)return3; s=BCAN_SET_OBJECT(0xFF,0x4E,0x16,0x00,0xff,0x00,0x00,0x00);  if(s==1)retur

3、n4; s=BCAN_SET_BANDRATE(CAN_BPS_1M);     if(s==1)return5;    SJA_BCANAdr=REG_OCR;       *SJA_BCANAdr=0x1a;            SJA_BCANAdr=REG_IER;      *SJA_BCANAdr=0x03;     s=BCAN_SET_CONTROL(0x08); if(s==1)return6;EA=1; return0;  }}/*********************************************************************

4、函数原型:bitBCAN_SET_OUTCLK(unsignedcharClock_Out)           **参数说明:                                                            **     Clock_Out:存放时钟分频寄存器(CDR)的参数设置                    **返回值:                                                              **          0;设置成功                               

5、                **          1;设置失败                                               **说明:设置SJA1000的时钟分频。该子程序只能用于复位模式                     *******************************************************************/bitBCAN_SET_OUTCLK(unsignedcharClock_Out){ SJA_BCANAdr=REG_CDR;            *SJA_BCANAdr=Clock_O

6、ut;        if(*SJA_BCANAdr!=Clock_Out)    return1;  else    return0;}/*********************************************************************函数原型:bitBCAN_SET_OBJECT(unsignedchar BCAN_ACR0,BCAN_ACR1,BCAN_ACR2,BCAN_ACR3， BCAN_AMR0,BCAN_AMR1,BCAN_AMR2,BCAN_AMR3 )   *参数说明:                              

7、                               **   BCAN_ACR(0-3):存放验收代码寄存器（ACR）的参数设置                 **   BCAN_AMR(0-3):存放接收屏蔽寄存器（AMR）的参数设置                 **返回值:                                                               **