The definition of ID_EXT seems incorrect in the MPC5746R.h file. ID_EXT needs to be 29bit long to be useful and is a superset of ID_STD. However, the definition provided in ver 5.0.3 of the file is only 18 bits long.
typedef union CAN_MB_ID_union_tag { /* Message Buffer 0 ID Register */
vuint32_t R;
struct {
vuint32_t PRIO:3; /* Local Priority */
vuint32_t ID_STD:11; /* Frame Identifier Standard */
vuint32_t ID_EXT:18; /* Frame Identifier Extended */ <--- INCORRECT
} B;
} CAN_MB_ID_tag;
So, as labelled:
ID_STD should be bits 3-13 i.e. 11 bits long
ID_EXT should be bits 3-31 i.e. 29 bits long
This is what I'm using instead which behaves as I would expect.
typedef union CAN_MB_ID_union_tag { /* Message Buffer 0 ID Register */
vuint32_t R;
struct {
vuint32_t PRIO:3; /* Local Priority */
vuint32_t ID_STD:11; /* Frame Identifier Standard */
vuint32_t unused:18; /* Not used */
} B_STD;
struct {
vuint32_t PRIO:3; /* Local Priority */
vuint32_t ID_EXT:29; /* Frame Identifier Extended */
} B_EXT;
} CAN_MB_ID_tag;
Has this been fixed in newer versions of the file? I updated my S32DS today and that's still the version used when I create a new project.
James
