at_device ESP8266 onenet

AT Client receive failed？？？

发布于 2021-03-25 13:35:12 浏览：974 订阅该版

4 个回答

Jone 2021-03-25

写了还是懒

草原狼123 2021-03-25

这家伙很懒，什么也没写！

Jone 2021-03-25

写了还是懒

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flashman2002 2021-03-25

这家伙很懒，什么也没写！

草原狼123 2021-03-25

这家伙很懒，什么也没写！

/**
 * AT client receive fixed-length data.
 *
 * @param client current AT client object
 * @param buf   receive data buffer
 * @param size  receive fixed data size
 * @param timeout  receive data timeout (ms)
 *
 * @note this function can only be used in execution function of URC data
 *
 * @return >0: receive data size
 *         =0: receive failed
 */
rt_size_t at_client_obj_recv(at_client_t client, char *buf, rt_size_t size, rt_int32_t timeout)
{
    rt_size_t read_idx = 0;
    rt_err_t result = RT_EOK;
    char ch;

RT_ASSERT(buf);

if (client == RT_NULL)
    {
        LOG_E("input AT Client object is NULL, please create or get AT Client object!");
        return 0;
    }

while (1)
    {
        if (read_idx < size)
        {
            result = at_client_getchar(client, &ch, timeout);
            if (result != RT_EOK)
            {
                LOG_E("AT Client receive failed, uart device get data error(%d)", result);
                return 0;
            }

buf[read_idx++] = ch;
        }
        else
        {
            break;
        }
    }

#ifdef AT_PRINT_RAW_CMD
    at_print_raw_cmd("urc_recv", buf, size);
#endif

return read_idx;
}