{
    "db": [
        {
            "db_start": 64,
            "db_end": 127,
            "period": 10,
            "comment": "CFG_PARA"
        },
        {
            "db_start": 128,
            "db_end": 253,
            "period": 10,
            "comment": "SUMMARY_INFO"
        },
        {
            "db_start": 256,
            "db_end": 319,
            "period": 10,
            "comment": "CRITICAL_STATE"
        },
        {
            "db_start": 320,
            "db_end": 381,
            "period": 40,
            "comment": "WARN_PARA"
        },
        {
            "db_start": 384,
            "db_end": 445,
            "period": 40,
            "comment": "WARN_PARA_RECOVER"
        },
        {
            "db_start": 448,
            "db_end": 510,
            "period": 10,
            "comment": "VERSION_INFO"
        },
        {
            "db_start": 512,
            "db_end": 1023,
            "period": 40,
            "comment": "BAT_TEMP"
        },
        {
            "db_start": 1024,
            "db_end": 1535,
            "period": 40,
            "comment": "BAT_VOLTAGE"
        },
        {
            "db_start": 1536,
            "db_end": 2047,
            "period": 40,
            "comment": "RESISTANCE"
        },
        {
            "db_start": 2048,
            "db_end": 2559,
            "period": 40,
            "comment": "OTHER_TEMP"
        },
        {
            "db_start": 2560,
            "db_end": 2687,
            "period": 10,
            "comment": "RESVER_INFO"
        },
        {
            "db_start": 2944,
            "db_end": 3009,
            "period": 40,
            "comment": "PACK_VOL_AND_OTER"
        },
        {
            "db_start": 3072,
            "db_end": 3583,
            "period": 40,
            "comment": "BAT_TEMP_RISE"
        },
        {
            "db_start": 3584,
            "db_end": 4095,
            "period": 40,
            "comment": "BAT_BALANCE_STATUS"
        }
    ],
    "comment": "db字段中的period单位是50ms。不用刻意错开period，代码中会对period加上当前json对象在数组中的偏移"
}