RCC_APB1PeriphClockCmd(RCC_APB1Periph_CAN, ENABLE);
CAN_DeInit();
CAN_StructInit(&CAN_InitStructure);
// CAN cell init
CAN_InitStructure.CAN_TTCM=DISABLE;
CAN_InitStructure.CAN_ABOM=DISABLE;
CAN_InitStructure.CAN_AWUM=DISABLE;
CAN_InitStructure.CAN_NART=DISABLE;
CAN_InitStructure.CAN_RFLM=DISABLE;
CAN_InitStructure.CAN_TXFP=DISABLE;
CAN_InitStructure.CAN_Mode=CAN_Mode_Normal;
#if(1)
CAN_InitStructure.CAN_SJW=CAN_SJW_1tq;
CAN_InitStructure.CAN_BS1=CAN_BS1_8tq;
CAN_InitStructure.CAN_BS2=CAN_BS2_7tq;
CAN_InitStructure.CAN_Prescaler=9; //此种设置CAN通讯不正常
#else
CAN_InitStructure.CAN_SJW=CAN_SJW_1tq;
CAN_InitStructure.CAN_BS1=CAN_BS1_6tq;
CAN_InitStructure.CAN_BS2=CAN_BS2_5tq;
CAN_InitStructure.CAN_Prescaler=12; //此种设置CAN通讯正常
#endif
CAN_Init(&CAN_InitStructure);
时钟主频72MHZ，CAN通讯波特率采用250K，上面两种设置应该都是250K的波特率，为什么第2种设置能够正常，而第一种设置通讯不正常？ |
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楼主
