请教AT组件相关应用

发布于 2020-06-05 19:46:20 浏览：1319 订阅该版

版本 RT-THread 4.0.0

文件 at_client.c at.h

void at_client_deinit(void)
{
  int idx = 0;
  at_client_t client = RT_NULL;
  for (idx = 0; idx < AT_CLIENT_NUM_MAX; idx++)
  {
      client = &at_client_table[idx];
      rt_device_close(client->device);
      at_client_table[idx].device = NULL;
  }
}

有些设备要通过AT命令进行设置，设置完之后，就进入非AT命令模式，为方便转换特加入此函数，请大神指点。

2 个回答

piaoxueboy 2020-06-24

这家伙很懒，什么也没写！

版本 RT-THread 4.0.2

文件 at_client.c(v1.3.0) at.h
```c
void at_client_deinit(void)
{
int idx = 0;
at_client_t client = RT_NULL;

for (idx = 0; idx < AT_CLIENT_NUM_MAX; idx++)
{

  client = &at_client_table[idx];
  if (client->lock)
  {
      rt_mutex_delete(client->lock);
  }
  if (client->rx_notice)
  {
      rt_sem_delete(client->rx_notice);
  }
  if (client->resp_notice)
  {
      rt_sem_delete(client->resp_notice);
  }
  if (client->device)
  {
      rt_device_close(client->device);
  }
  if (client->recv_line_buf)
  {
      rt_free(client->recv_line_buf);
  }
  if (client->parser)
  {
      rt_thread_delete(client->parser);
  }
  at_client_table[idx].device = NULL;
  client->parser = RT_NULL;
  client->urc_table = RT_NULL;
  client->urc_table_size = 0;
  rt_memset(client, 0x00, sizeof(struct at_client));

}


执行`at_client_init("uart2",128)`，后在执行`at_client_deinit();`
然后在执行`at_client_init("uart2",128)`就会报

(0) assertion failed at function:stm32_dma_config,
```

请教一下该如何解决？

qq_还没想好 2020-08-26

这家伙很懒，什么也没写！

感觉像是底层串口驱动的问题。好像有修复串口相关的问题，拉最新的代码试试看。

moneng 2021-08-18

这家伙很懒，什么也没写！

版本 RT-THread 4.0.3

通过at_client对应的serial_device名称查找at_client并将其deinit

void at_client_deinit(const char *dev_name)
{
    at_client_t client = RT_NULL;
    RT_ASSERT(dev_name);
    client = at_client_get(dev_name);
    if (client == RT_NULL)
    {
        return;
    }
    {
        if (client->lock)
        {
            rt_mutex_delete(client->lock);
        }
        if (client->rx_notice)
        {
            rt_sem_delete(client->rx_notice);
        }
        if (client->resp_notice)
        {
            rt_sem_delete(client->resp_notice);
        }
        if (client->device)
        {
            rt_device_close(client->device);
        }
        if (client->recv_line_buf)
        {
            rt_free(client->recv_line_buf);
        }
        if (client->parser)
        {
            rt_thread_delete(client->parser);
        }
        if (client->urc_table)
        {
            rt_free(client->urc_table);
            client->urc_table = RT_NULL;
            client->urc_table_size = 0;
        }
        client->device = NULL;
        client->parser = RT_NULL;
        rt_memset(client, 0x00, sizeof(struct at_client));
    }
}