启动定时器
## 启动定时器
```language
UINT32 xy_Timer_Start(UINT32 *pTimerId)
```
## 参数说明
|参数|功能说明|
|-|-|-|
|pTimerId|定时器ID|
## 返回值
成功：0
失败：发送断言信息
## 示例
```language
unsigned int user_timer_id= 0;
static void user_timer_timeout_report(UINT16 *timer)
{
xy_printf("timeout\r\n");
}
void user_timer_init()
{
xy_Timer_Create("user_timer_demo",&user_timer_id,1000,TIMER_AUTO_RELOAD,(xyTimerCallbackFunc)user_timer_timeout_report);
xy_Timer_Start(&user_timer_id);
}
```