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add lin status changes the format of the reported frame and add the macros that lin needs

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Signed-off-by: wangxiaoxin <wangxiaoxin@xiaomi.com>
This commit is contained in:
wangxiaoxin 2024-06-27 16:26:26 +08:00 committed by GUIDINGLI
parent d22ad37cd7
commit 366ede9530
1 changed files with 45 additions and 21 deletions
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66
include/nuttx/lin.h
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@ -30,6 +30,8 @@
#include <nuttx/config.h>
#include <nuttx/can.h>
#ifdef CONFIG_NET_CAN
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
@ -38,37 +40,49 @@
#define LIN_ID_MASK ((1 << LIN_ID_BITS) - 1)
#define LIN_ID_MAX LIN_ID_MASK
#define LIN_CTRL_FRAME CAN_EFF_FLAG
#define LIN_CTRL_FLAG CAN_EFF_FLAG /* Describe control information(such as wirte et.) */
#define LIN_RTR_FLAG CAN_RTR_FLAG /* Describe the direction of sending and receiving */
#define LIN_ERR_FLAG CAN_ERR_FLAG /* The flag indicate this is LIN err_frame */
/* 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;
/* 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_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))
#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))
/* LIN Error Indications ****************************************************/
/* LIN_ERR_FLAG: Used to distinguish it from ordinary frames.
* The error frame consists of err_flag、err_class(defined in data[0])
* and err_reason(defined in data[1] to data[4]).
* 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:
* struct can_frame {
* canid_t can_id;
* uint8_t can_dlc;
* uint8_t __pad;
* uint8_t __res0;
* uint16_t flags;
* uint8_t __res1;
* uint8_t data[CAN_MAX_DLEN] __attribute__((aligned(8)));
* };
* }__attribute__((packed));
*
* Error frame description format：
*
@ -85,8 +99,6 @@
* define in data[0] ~ data[4] in can_frame.
*/
#define LIN_ERR_FLAG CAN_ERR_FLAG /* The flag indicate this is LIN err_frame */
/* ERR_CLASS in data[0] */
#define LIN_ERR_UNSPEC 0x00 /* Unspecified error */
@ -124,7 +136,7 @@
#define LIN_ERR_BUS_PID (1 << 0) /* Bit 0: Pid received back is not equal to the pid sent */
#define LIN_ERR_BUS_TXCKSUM (1 << 1) /* Bit 1: Checksum received back is not equal to checksum sent */
#define LIN_ERR_BUS_SYNC (1 << 2) /* Bit 2: Master send sync, but receive back sync is not 0x55 */
#define LIN_ERR_BUS_DATA (1 << 3) /* Bit 3: Data received back is not equal to the data sent */
#define LIN_ERR_BUS_DATA (1 << 3) /* Bit 3: Data received back is not equal to the data sent */
/* Data[4] error status of LIN-controller */
@ -132,6 +144,17 @@
#define LIN_ERR_CRTL_RXOVERFLOW (1 << 0) /* Hardware controller receive overflow */
#define LIN_ERR_CTRL_FRAMEERROR (1 << 1) /* Hardware controller frame error */
/* LIN States Indications ***************************************************/
/* lower_half State switch events are defined in data[0] */
#define LIN_EVT_UNSPEC 0x00 /* Unspecified state event */
#define LIN_EVT_WAKEUP (1 << 0) /* Already send a wake-up command to lin_bus */
#define LIN_EVT_WAKEUP_PASSIVE (1 << 1) /* Wake up when detecte low level signal of bus a for a period of time(such as 250us-5ms) */
#define LIN_EVT_SLEEP (1 << 2) /* Send a sleep command(0x3c) to the bus, only Master */
#define LIN_EVT_SLEEP_PASSIVE (1 << 3) /* Receive a sleep command from bus */
#define LIN_EVT_SLEEP_IDLE (1 << 4) /* Go to sleep when bus keep in the inactive for a period of time(such as 4s) */
/****************************************************************************
* Public Function Prototypes
****************************************************************************/
@ -150,4 +173,5 @@ extern "C"
}
#endif
#endif /* CONFIG_CAN */
#endif /* __INCLUDE_NUTTX_LIN_H */