RT-Thread-TA的回答

问 easyflash的GC出现错误

发布于3年前

设备后面自动重启了，并且flash存储的内容全部没有了，下面是我的flash代码，底层用的ef4.1.0

uint32_t Flash_Get(uint8_t id)
{
    uint32_t Counter = 0;
//    char *Counter_Temp = rt_malloc(32);//申请临时buffer空间;
    char *Counter_Temp;
    Counter_Temp = strdup(ef_get_env((const char*)&Key_list[id]));
    if (Counter_Temp == RT_NULL)
        Counter_Temp[0] = '0';
    Counter = atol(Counter_Temp);
    rt_free(Counter_Temp);//释放临时buffer对应内存空间
    LOG_D("Reading From %s is %d\r\n", Key_list[id],Counter);
    return Counter;
}
void Flash_Set(uint8_t id,uint32_t value)
{
    char * Counter_Temp;
    Counter_Temp = rt_malloc(32);
    snprintf(Counter_Temp, 32,"%ld", value);
    ef_set_env((const char*)&Key_list[id], Counter_Temp);
    ef_save_env();
    rt_free(Counter_Temp);
    LOG_D("Writing to %s is %d\r\n", Key_list[id],value);
    rt_thread_mdelay(10);
}

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问线程错误怎么判断哪里的问题（其他线程都ok）

发布于3年前

线程有电机，lcd，现象就是电机跑固定圈数，屏幕就只是白屏，不显示其他。看们狗没触发，其他线程都是ok的

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问 studio 2.1.0 cubemx加载时间过长？

发布于3年前

算是找到了，生成工程后必须把cubemx给关闭，不然就会遇到我的情况

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问 FlashDB在哪里修改版本号实现自动更新？

发布于3年前

这里更改版本号进行更改判断

static void kv_auto_update(fdb_kvdb_t db)//这个代码是自动更新的源码
{
    size_t saved_ver_num, setting_ver_num = db->ver_num;
    if (get_kv(db, VER_NUM_KV_NAME, &saved_ver_num, sizeof(size_t), NULL) > 0) {
        /* check version number */
        if (saved_ver_num != setting_ver_num) {//判断是否更新
            struct fdb_kv kv;
            size_t i, value_len;
            struct kvdb_sec_info sector;
            FDB_DEBUG("Update the KV from version %u to %u.\n", saved_ver_num, setting_ver_num);
            for (i = 0; i < db->default_kvs.num; i++) {
                /* add a new KV when it's not found */
                if (!find_kv(db, db->default_kvs.kvs[i].key, &kv)) {
                    /* It seems to be a string when value length is 0.
                     * This mechanism is for compatibility with older versions (less then V4.0). */
                    if (db->default_kvs.kvs[i].value_len == 0) {
                        value_len = strlen(db->default_kvs.kvs[i].value);
                    } else {
                        value_len = db->default_kvs.kvs[i].value_len;
                    }
                    sector.empty_kv = FAILED_ADDR;
                    create_kv_blob(db, §or, db->default_kvs.kvs[i].key, db->default_kvs.kvs[i].value, value_len);
                }
            }
        } else {
            /* version number not changed now return */
            return;
        }
    }
    set_kv(db, VER_NUM_KV_NAME, &setting_ver_num, sizeof(size_t));
}