CAN Hal STM32 Typedefinition in can_lld.h
Posted: Fri Jun 10, 2016 9:33 am
Hi,
im wondering, why in the following CAN Message type
has no Union support for uint64 included.
Im working with 64 Bit CAN messages very often and splitting into
32 Bit is little bit fiddly.
There is the example including this Union:
Ist the same for RX Frame
Greetings mb
im wondering, why in the following CAN Message type
has no Union support for uint64 included.
Im working with 64 Bit CAN messages very often and splitting into
32 Bit is little bit fiddly.
There is the example including this Union:
Code: Select all
/*===========================================================================*/
/* Driver data structures and types. */
/*===========================================================================*/
/**
* @brief Type of a transmission mailbox index.
*/
typedef uint32_t canmbx_t;
/**
* @brief CAN transmission frame.
* @note Accessing the frame data as word16 or word32 is not portable because
* machine data endianness, it can be still useful for a quick filling.
*/
typedef struct {
struct {
uint8_t DLC:4; /**< @brief Data length. */
uint8_t RTR:1; /**< @brief Frame type. */
uint8_t IDE:1; /**< @brief Identifier type. */
};
union {
struct {
uint32_t SID:11; /**< @brief Standard identifier.*/
};
struct {
uint32_t EID:29; /**< @brief Extended identifier.*/
};
};
union {
uint8_t data8[8]; /**< @brief Frame data. */
uint16_t data16[4]; /**< @brief Frame data. */
uint32_t data32[2]; /**< @brief Frame data. */
uint64_t data;
};
} CANTxFrame;
Ist the same for RX Frame
Greetings mb