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LIN:adjust the LIN flag

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Fix incorrect and non-existent flag usage in LIN handling:

- Replace undefined CANFD_FLAGS_BITS usage with valid bit definitions.
- Reassign CAN_TCF_FLAG to an available flag bit, as it is not defined in can.h.
- Add an identifier for LIN noise error frames.

Signed-off-by: wangxiaoxin <wangxiaoxin@xiaomi.com>
This commit is contained in:
wangxiaoxin
2024-12-02 14:13:53 +08:00
committed by Xiang Xiao
parent 96e8fce4de
commit 87d74d141a
1 changed files with 36 additions and 29 deletions
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include/nuttx/lin.h
+36 -29
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@@ -40,35 +40,40 @@
#define LIN_ID_MASK ((1 << LIN_ID_BITS) - 1)
#define LIN_ID_MAX LIN_ID_MASK
#define LIN_CTRL_FLAG CAN_EFF_FLAG /* Describe control information (such as write etc.) */
#define LIN_RTR_FLAG CAN_RTR_FLAG /* Describe the direction of sending and receiving */
#define LIN_ERR_FLAG CAN_ERR_FLAG /* The flag indicates this is LIN err_frame */
/* Describe control information (such as write etc.) */
/* Bit flags on can_frame.types
*
* Use can_frame.types to identify other special frame.
*
* LIN_TCF_FLAG : TxConfirmation message frame. Lower_half use this flag to
* confirm frame-transmit
*
* LIN_EVT_FLAG : Event message frame. Lower_half use this flag to report
* state switch event
*
* LIN_CACHE_RESP_FLAG: When slave response to master, slave node should send
* frame immediately which already be cached in last
* transmission in case of response interval over time.
*
* LIN_CHKSUM_EXT_FLAG: LIN checksum have two types, default type will be
* classic checksum
*
* LIN_SINGLE_RESP_FLAG: Cache LIN frame only work once, then will be cleared
#define LIN_CTRL_FLAG CAN_EFF_FLAG
/* Describe the direction of sending and receiving */
#define LIN_RTR_FLAG CAN_RTR_FLAG
/* The flag indicate this is LIN err_frame */
#define LIN_ERR_FLAG CAN_ERR_FLAG
/* Lower_half report state switch event frame */
#define LIN_EVT_FLAG CAN_EVT_FLAG
/* When slave response to master, slave node should send frame immediately
* which already be cached in last transmission in case of response interval
* over time
*/
#define LIN_TCF_FLAG CAN_TCF_FLAG
#define LIN_EVT_FLAG CAN_EVT_FLAG
#define LIN_CACHE_RESP_FLAG (1 << (CANFD_FLAGS_BITS + 2))
#define LIN_CHKSUM_EXT_FLAG (1 << (CANFD_FLAGS_BITS + 3))
#define LIN_SINGLE_RESP_FLAG (1 << (CANFD_FLAGS_BITS + 4))
#define LIN_CACHE_RESPONSE (1 << (LIN_ID_BITS))
/* LIN checksum have two types, default type will be classic checksum */
#define LIN_CHECKSUM_EXTENDED (1 << (LIN_ID_BITS + 1))
/* Cache LIN frame only work once. then will be clear */
#define LIN_SINGLE_RESPONSE (1 << (LIN_ID_BITS + 2))
/* TxConfirmation frame. Lower_half use the flag to confirm frame-transmit */
#define LIN_TCF_FLAG (1 << (LIN_ID_BITS + 3))
/* LIN Error Indications ****************************************************/
@@ -76,13 +81,14 @@
* The error frame consists of err_flag（LIN_ERR_FLAG)、err_class
* (defined in data[0]) and err_reason(defined in data[1] to data[4]).
* The error frame is described using the following structure:
* begin_packed_struct struct can_frame {
* struct can_frame {
* canid_t can_id;
* uint8_t can_dlc;
* uint16_t flags;
* uint8_t __pad;
* uint8_t __res0;
* uint8_t __res1;
* uint8_t data[CAN_MAX_DLEN] __attribute__((aligned(8)));
* } end_packed_struct;
* };
*
* Error frame description format：
*
@@ -143,6 +149,7 @@
#define LIN_ERR_CRTL_UNSPEC 0x00 /* Unspecified error */
#define LIN_ERR_CRTL_RXOVERFLOW (1 << 0) /* Hardware controller receive overflow */
#define LIN_ERR_CTRL_FRAMEERROR (1 << 1) /* Hardware controller frame error */
#define LIN_ERR_CTRL_NOISE (1 << 2) /* Hardware controller noise error */
/* LIN States Indications ***************************************************/