请教AT组件相关应用

发布于 2020-06-05 19:46:20 浏览：1193 订阅该版

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！

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
```c
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));
    }
}
```