使用AT Client获取GPS定位信息碰到的问题

发布于 2024-03-07 18:27:11 浏览：490 订阅该版

```c
int get_gps_location(at_client_t client, int * err_code, char * loc)
{
    // 正常返回数据, 4行
    // 
    // +QGPSLOC: 142354.00,28.66313,121.42938,2.60,66.6,3,,2.161,1.184,200224,08
    // 
    // OK

// 错误返回数据, 2行
    // 
    // +CME ERROR: 516

// 先设置2行
    rt_size_t line_num = 2;
    rt_int32_t timeout = 1000;

at_response_t resp = at_create_resp(AT_CLIENT_RECV_BUFF_LEN, line_num, rt_tick_from_millisecond(timeout));
    if (resp == RT_NULL)
    {
        return -RT_ENOMEM;
    }

if (at_obj_exec_cmd(client, resp, "AT+QGPSLOC=2") != RT_EOK)
    {
        LOG_E("exec at command error.");
        at_delete_resp(resp);
        return -RT_ERROR;
    }

if (at_resp_parse_line_args_by_kw(resp, "+CME ERROR: ", "+CME ERROR: %d", err_code) == 1)
    {
        LOG_E("CME err_code: %d.", err_code);
        at_delete_resp(resp);
        return -RT_ERROR;
    }

resp->line_num = 4;

if (at_resp_parse_line_args_by_kw(resp, "+QGPSLOC:", "+QGPSLOC: %99[^\r\n]", loc) != 1)
    {
        LOG_E("get location error.");
        at_delete_resp(resp);
        return -RT_ERROR;
    }

at_delete_resp(resp);

return RT_EOK;
}
```

运行以后直接崩溃了
```
psr: 0x61000000
r00: 0x00000044
r01: 0x000000ff
r02: 0x00000002
r03: 0x200013dc
r04: 0x200005a4
r05: 0x00000002
r06: 0x200012cc
r07: 0xffffffff
r08: 0x20001618
r09: 0x00000000
r10: 0x20001482
r11: 0x00000002
r12: 0x200005b8
 lr: 0x08005447
 pc: 0x080054b4
hard fault on thread: mqtt_rec

rt_thread_ thread   pri  status      sp     stack size max used left tick  error
---------- -------- ---  ------- ---------- ----------  ------  ---------- ---
0x200066a4 at_clnt    9  suspend 0x0000006c 0x00000600    53%   0x00000003 EINTRPT
0x20001720 mqtt_sen  15  suspend 0x0000019c 0x00000400    68%   0x00000004 EINTRPT
0x20001290 mqtt_rec   0  running 0x0000045c 0x00000400    100%   0xffffffff OK
0x200062c8 at_clnt    9  suspend 0x00000068 0x00000600    06%   0x00000005 EINTRPT
0x20000e00 ec800     15  suspend 0x00000084 0x00000400    45%   0x00000002 EINTRPT
0x20005970 at_clnt    9  suspend 0x00000068 0x00000600    06%   0x00000005 EINTRPT
0x20003634 tshell    20  suspend 0x0000007c 0x00001000    03%   0x0000000a EINTRPT
0x20002fb8 qled       3  suspend 0x00000058 0x00000200    17%   0x00000014 EINTRPT
0x20000c6c tidle0    31  ready   0x00000040 0x00000100    28%   0x00000012 OK
0x20002b14 main      10  suspend 0x00000094 0x00000400    69%   0x00000002 EINTRPT
bus fault:
SCB_CFSR_BFSR:0x04 IMPRECISERR
```
请问下我的错误在哪里？