[分享内容]: 转事件到主循环执行

### 对执行位置有限制的函数
##### 1. 关机函数
le_trans_set_soft_poweroff();
hidkey_set_soft_poweroff();
power_set_soft_poweroff();等等

##### 2. 写flash
syscfg_write();
fwrite();

##### 3. 蓝牙回调里面不适宜执行耗时处理

<br>

### 需要转事件到最低优先级执行

```c
#define DEVICE_EVENT_FROM_TMR   (('T' << 24) | ('M' << 16) | ('R' << 8) | '\0')

#include "app_main.h"
void app_timer_event_to_user(u8 event, u32 value)
{
    struct sys_event *e = event_pool_alloc();
    if (e == NULL) {
        log_info("Memory allocation failed for sys_event");
        return;
    }
    e->type = SYS_DEVICE_EVENT;
    e->arg  = (void *)DEVICE_EVENT_FROM_TMR;
    e->u.dev.event = event;
    e->u.dev.value = value;
    main_application_operation_event(NULL, e);
}

void app_timer_event_handler(struct sys_event *e)
{
    int ret = 0;
    if ((u32)e->arg == DEVICE_EVENT_FROM_TMR) {
        u8 event = e->u.dev.event;
        u32 value = e->u.dev.value;
        log_info("%s[event:%d value:%d]", __func__, event, value);
        switch(event) {
            case 1:
                le_trans_set_soft_poweroff();  //关机函数，必须放最低优先级线程执行
                break;
            case 2:
                u32 var;
                #define CFG_USER_VAR	 2
                ret = syscfg_write(CFG_USER_VAR, &var, sizeof(u32));
                break;
            case 3:
                //其余耗时操作
                printf("%s(line:%d), value= %d", __func__, __LINE__, value);
                break;
            default:
                break;
        }
    }
}

app_timer_event_handler(event);

app_timer_event_to_user(1,2);
```
![输入图片说明](https://foruda.gitee.com/images/1741154932442253694/f59d679b_11285002.png "屏幕截图")
注：其他例子或HID工程则需要添加到相应文件的对应地方

珠海杰理科技/fw-AW31N_BLE_SDK

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