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stm32f107的can1的1m波特率设置

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stm32f107的can1的1m波特率设置
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u8 CAN_Mode_Init(u8 tsjw,u8 tbs2,u8 tbs1,u16 brp,u8 mode) { GPIO_InitTypeDefGPIO_InitStructure; CAN_InitTypeDefCAN_InitStructure; CAN_FilterInitTypeDefCAN_FilterInitStructure; #if CAN_RX0_INT_ENABLE NVIC_InitTypeDefNVIC_InitStructure; #endif/* CAN Periph clock enable */ RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB | RCC_APB2Periph_AFIO ,ENABLE); //| RCC_APB2Periph_GPIOD RCC_APB1PeriphClockCmd(RCC_APB1Periph_CAN1, ENABLE); GPIO_PinRemapConfig(GPIO_Remap1_CAN1,ENABLE); /* Configure CAN pin: RX */ GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8; GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPU; //GPIO_Mode_IN_FLOATING; GPIO_Init(GPIOB, &GPIO_InitStructure); /* Configure CAN pin: TX */ GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP; GPIO_Init(GPIOB, &GPIO_InitStructure); //CAN单元设置 CAN_InitStructure.CAN_TTCM=DISABLE; //非时间触发通信模式 CAN_InitStructure.CAN_ABOM=DISABLE; //软件自动离线管理 CAN_InitStructure.CAN_AWUM=DISABLE; //睡眠模式通过软件唤醒(清除CAN->MCR的SLEEP位) CAN_InitStructure.CAN_NART=ENABLE; //禁止报文自动传送 CAN_InitStructure.CAN_RFLM=DISABLE; //报文不锁定,新的覆盖旧的 CAN_InitStructure.CAN_TXFP=DISABLE; //优先级由报文标识符决定 CAN_InitStructure.CAN_Mode= mode; //模式设置： mode:0,普通模式; 1,回环模式; //设置波特率 CAN_InitStructure.CAN_SJW=tsjw; //重新同步跳跃宽度(Tsjw)为tsjw+1个时间单位CAN_SJW_1tqCAN_SJW_2tq CAN_SJW_3tq CAN_SJW_4tq CAN_InitStructure.CAN_BS1=tbs1; //Tbs1=tbs1+1个时间单位CAN_BS1_1tq ~CAN_BS1_16tq CAN_InitStructure.CAN_BS2=tbs2; //Tbs2=tbs2+1个时间单位CAN_BS2_1tq ~ CAN_BS2_8tq CAN_InitStructure.CAN_Prescaler=brp; //分频系数(Fdiv)为brp+1 CAN_Init(CAN1, &CAN_InitStructure); //初始化CAN1 CAN时钟是36M CAN_FilterInitStructure.CAN_FilterNumber=0; //过滤器0 CAN_FilterInitStructure.CAN_FilterMode=CAN_FilterMode_IdMask; //屏蔽位模式 CAN_FilterInitStructure.CAN_FilterScale=CAN_FilterScale_32bit; //32位宽 CAN_FilterInitStructure.CAN_FilterIdHigh=0x01 <<5; //32位ID CAN_FilterInitStructure.CAN_FilterIdLow=0x0000; CAN_FilterInitStructure.CAN_FilterMaskIdHigh=0x1f <<5; //32位MASK CAN_FilterInitStructure.CAN_FilterMaskIdLow=0x0000; CAN_FilterInitStructure.CAN_FilterFIFOAssignment=CAN_Filter_FIFO0; //过滤器0关联到FIFO0 CAN_FilterInitStructure.CAN_FilterActivation=ENABLE; //激活过滤器0 CAN_FilterInit(&CAN_FilterInitStructure); //滤波器初始化 #if CAN_RX0_INT_ENABLE CAN_ITConfig(CAN1,CAN_IT_FMP0,ENABLE); //FIFO0消息挂号中断允许. NVIC_InitStructure.NVIC_IRQChannel = CAN1_RX0_IRQn; NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1; // 主优先级为1 NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0; // 次优先级为0 NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; NVIC_Init(&NVIC_InitStructure); #endif return 0; }

【stm32f107的can1的1m波特率设置】

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