can-bus 相关问题

控制器局域网（CAN）总线是一种通常用于汽车和其他车辆的网络技术。它支持多个传输节点的确定性优先级仲裁。

将两个消息结构链接在一起我有两个略有不同的结构，我希望以某种方式链接最快的结果。这是两个结构： /** * @brief可以tx消息结构定义 */ Typedef s ...

/** * @brief CAN Tx message structure definition */ typedef struct { uint32_t StdId; /*!< Specifies the standard identifier. This parameter must be a number between Min_Data = 0 and Max_Data = 0x7FF */ uint32_t ExtId; /*!< Specifies the extended identifier. This parameter must be a number between Min_Data = 0 and Max_Data = 0x1FFFFFFF */ uint32_t IDE; /*!< Specifies the type of identifier for the message that will be transmitted. This parameter can be a value of @ref CAN_Identifier_Type */ uint32_t RTR; /*!< Specifies the type of frame for the message that will be transmitted. This parameter can be a value of @ref CAN_remote_transmission_request */ uint32_t DLC; /*!< Specifies the length of the frame that will be transmitted. This parameter must be a number between Min_Data = 0 and Max_Data = 8 */ uint8_t Data[8]; /*!< Contains the data to be transmitted. This parameter must be a number between Min_Data = 0 and Max_Data = 0xFF */ }CanTxMsgTypeDef; /** * @brief CAN Rx message structure definition */ typedef struct { uint32_t StdId; /*!< Specifies the standard identifier. This parameter must be a number between Min_Data = 0 and Max_Data = 0x7FF */ uint32_t ExtId; /*!< Specifies the extended identifier. This parameter must be a number between Min_Data = 0 and Max_Data = 0x1FFFFFFF */ uint32_t IDE; /*!< Specifies the type of identifier for the message that will be received. This parameter can be a value of @ref CAN_Identifier_Type */ uint32_t RTR; /*!< Specifies the type of frame for the received message. This parameter can be a value of @ref CAN_remote_transmission_request */ uint32_t DLC; /*!< Specifies the length of the frame that will be received. This parameter must be a number between Min_Data = 0 and Max_Data = 8 */ uint8_t Data[8]; /*!< Contains the data to be received. This parameter must be a number between Min_Data = 0 and Max_Data = 0xFF */ uint32_t FMI; /*!< Specifies the index of the filter the message stored in the mailbox passes through. This parameter must be a number between Min_Data = 0 and Max_Data = 0xFF */ uint32_t FIFONumber; /*!< Specifies the receive FIFO number. This parameter can be CAN_FIFO0 or CAN_FIFO1 */ }CanRxMsgTypeDef;

c embedded can-bus iar type-punning

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我使用 SPI HAL 库将 can_fd 控制器 MCP2517FD 与 STM32F4 (Cortex-M) 连接。使用控制器驱动程序：https://github.com/SDibla/Cortex-M4-MCP2517FD_Driver 阻塞中...

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我遇到一个问题，我的 CAN 记录器没有记录任何传输的数据。我现在无法将代码粘贴到此处，但我确实有几条消息以 500 毫秒的周期传输了大约 500