File syn_j1939.h¶

File List > proto > syn_j1939.h
#ifndef SYN_J1939_H
#define SYN_J1939_H

#if __has_include("syn_config.h")
#include "syn_config.h"
#endif

#if !defined(SYN_USE_J1939) || SYN_USE_J1939

#include "../common/syn_defs.h"
#include "../drivers/syn_can.h"

#include <stdbool.h>
#include <stddef.h>
#include <stdint.h>

#ifdef __cplusplus
extern "C" {
#endif

#define SYN_J1939_ADDR_GLOBAL 0xFFU 
#define SYN_J1939_ADDR_NULL 0xFEU   
#define SYN_J1939_PGN_REQUEST 59904U    
#define SYN_J1939_PGN_TP_DT 60160U      
#define SYN_J1939_PGN_TP_CM 60416U      
#define SYN_J1939_PGN_ADDR_CLAIM 60928U 
#define SYN_J1939_PGN_PROPRIETARY_A 61184U 
#define SYN_J1939_PGN_EEC1 61444U          
#define SYN_J1939_PGN_DM1 65226U           
#define SYN_J1939_PGN_DM2 65227U           
#define SYN_J1939_PGN_DM3 65228U           
#define SYN_J1939_PGN_DM11 65235U          
#define SYN_J1939_PGN_BMS 65251U           
#define SYN_J1939_PGN_ET1 65262U           
#define SYN_J1939_PGN_PROPRIETARY_B 65280U 
#define SYN_J1939_TP_CTRL_RTS 16U    
#define SYN_J1939_TP_CTRL_CTS 17U    
#define SYN_J1939_TP_CTRL_ACK 19U    
#define SYN_J1939_TP_CTRL_BAM 32U    
#define SYN_J1939_TP_CTRL_ABORT 255U 
typedef struct {
    uint8_t priority; 
    uint8_t dp;       
    uint8_t pf;       
    uint8_t ps;       
    uint8_t sa;       
    uint8_t da;       
    uint32_t pgn;     
    bool is_pdu1;     
} SYN_J1939_Header;

typedef struct {
    uint32_t identity_number;    
    uint16_t manufacturer_code;  
    uint8_t ecu_instance;        
    uint8_t function_instance;   
    uint8_t function;            
    uint8_t vehicle_system;      
    uint8_t vehicle_system_inst; 
    uint8_t
        industry_group; 
    bool arbitrary_addr_cap; 
} SYN_J1939_Name;

typedef struct {
    uint32_t spn;              
    uint8_t fmi;               
    uint8_t occurrence_count;  
    uint8_t conversion_method; 
} SYN_J1939_DTC;

typedef enum {
    SYN_J1939_STATE_UNCLAIMED = 0,
    SYN_J1939_STATE_CLAIMING = 1,
    SYN_J1939_STATE_CLAIMED = 2,
    SYN_J1939_STATE_CANNOT_CLAIM = 3
} SYN_J1939_AddressState;

typedef struct {
    bool active;              
    bool is_bam;              
    uint8_t sa;               
    uint8_t da;               
    uint32_t pgn;             
    uint16_t total_bytes;     
    uint8_t total_packets;    
    uint8_t next_seq;         
    uint8_t received_packets; 
    uint8_t data[1785];       
} SYN_J1939_TpRxSession;

typedef struct {
    uint8_t sa;                   
    SYN_J1939_Name name;          
    SYN_J1939_AddressState state; 
    SYN_J1939_TpRxSession tp_rx;  
} SYN_J1939_Node;

uint32_t syn_j1939_id_pack(uint8_t priority, uint32_t pgn, uint8_t sa, uint8_t da);

SYN_Status syn_j1939_id_unpack(uint32_t can_id, SYN_J1939_Header *header);

uint32_t syn_j1939_calc_pgn(uint8_t dp, uint8_t pf, uint8_t ps);

void syn_j1939_name_encode(const SYN_J1939_Name *name, uint8_t buf[8]);

void syn_j1939_name_decode(const uint8_t buf[8], SYN_J1939_Name *name);

SYN_Status syn_j1939_node_init(SYN_J1939_Node *node, uint8_t sa, const SYN_J1939_Name *name);

SYN_Status syn_j1939_build_address_claim(const SYN_J1939_Node *node, SYN_CAN_Frame *frame);

SYN_Status syn_j1939_build_request(uint8_t sa, uint8_t da, uint32_t requested_pgn,
                                   SYN_CAN_Frame *frame);

SYN_Status syn_j1939_build_tp_bam(uint8_t sa, uint32_t pgn, uint16_t total_bytes,
                                  SYN_CAN_Frame *frame);

SYN_Status syn_j1939_build_tp_dt(uint8_t sa, uint8_t sequence, const uint8_t *payload,
                                 size_t payload_len, SYN_CAN_Frame *frame);

size_t syn_j1939_encode_dm1(uint8_t *buf, size_t buf_size, const SYN_J1939_DTC *dtc_list,
                            size_t dtc_count, uint8_t mil_lamp_status);

SYN_Status syn_j1939_process_frame(SYN_J1939_Node *node, const SYN_CAN_Frame *frame,
                                   uint32_t *out_pgn, const uint8_t **out_data, size_t *out_len);

size_t syn_j1939_encode_dm2(uint8_t *buf, size_t buf_size, const SYN_J1939_DTC *dtc_list,
                            size_t dtc_count, uint8_t mil_lamp_status);

#ifndef SYN_J1939_MAX_LOGGED_DTCS
#define SYN_J1939_MAX_LOGGED_DTCS 16
#endif

typedef struct {
    SYN_J1939_DTC active_dtcs[SYN_J1939_MAX_LOGGED_DTCS];
    size_t active_count;
    SYN_J1939_DTC prev_dtcs[SYN_J1939_MAX_LOGGED_DTCS];
    size_t prev_count;
} SYN_J1939_DTCLog;

void syn_j1939_dtc_log_init(SYN_J1939_DTCLog *log);

SYN_Status syn_j1939_dtc_add_active(SYN_J1939_DTCLog *log, uint32_t spn, uint8_t fmi);

SYN_Status syn_j1939_dtc_clear_active(SYN_J1939_DTCLog *log, uint32_t spn, uint8_t fmi);

void syn_j1939_dtc_clear_dm3(SYN_J1939_DTCLog *log);

void syn_j1939_dtc_clear_dm11(SYN_J1939_DTCLog *log);

#ifdef __cplusplus
}
#endif

#endif /* SYN_USE_J1939 */

#endif /* SYN_J1939_H */