alientek/dev/dev_can_id.c

/************************************************************************************************
 *                                          Include                                              *
 ************************************************************************************************/
#include "dev_can_id.h"
#include <stdint.h>

/************************************************************************************************
 *                                          Config                                                *
 ************************************************************************************************/
union
{
    uint32_t r;
    struct
    {
        uint8_t sa : 8;
        uint8_t ps : 8;
        uint8_t pf : 8;
        uint8_t dp : 1;
        uint8_t r  : 1;
        uint8_t p  : 3;
    } b;
} new_can_id;

#define CAN_PGN_PF 0xFFFF00
#define CAN_PGN_PS 0xFF00

uint32_t g_ps         = 0xF4;
uint32_t g_can_id     = 0x18F011F4;
uint32_t g_can_ota_id = 0x18DFE1F4;
uint8_t  g_can_iap    = 0xDF;

uint32_t get_new_can_id(uint8_t pf)
{
    new_can_id.r    = g_can_id;
    new_can_id.b.ps = new_can_id.b.sa;
    new_can_id.b.sa = g_ps;
    new_can_id.b.pf = pf;

    return new_can_id.r;
}

uint32_t set_new_can_id(uint16_t pgn)
{
    new_can_id.r    = g_can_id;
    new_can_id.b.sa = g_ps;
    new_can_id.b.ps = pgn & 0xFF;
    new_can_id.b.pf = pgn >> 8;
    return new_can_id.r;
}

uint32_t get_ota_id(uint8_t pf)
{
    new_can_id.r    = g_can_ota_id;
    new_can_id.b.ps = new_can_id.b.sa;
    new_can_id.b.sa = g_ps;
    new_can_id.b.pf = pf;

    return new_can_id.r;
}

/************************************************************************************************
 *                                          Data structs                                         *
 ************************************************************************************************/

/************************************************************************************************
 *                                          implements                                           *
 ************************************************************************************************/