typedef struct {	uint32_t mailbox;	CAN_TxHeaderTypeDef hdr;	uint8_t payload[8]; }CAN_TxPacketTypeDef; typedef struct {	CAN_RxHeaderTypeDef hdr;	uint8_t payload[8]; }CAN_RxPacketTypeDef;/// CAN过滤器寄存器位宽类型定义 typedef union { __IO uint32_t value; struct { uint8_t REV : 1;	///