RT-Thread-[第3期空气质量分析仪]第3周作业RT-Thread问答社区

[第3期空气质量分析仪]第3周作业

发布于 2019-11-01 18:17:21 浏览：783 订阅该版

* 本帖最后由 Carry 于 2019-11-1 18:21 编辑 *

1，建立mylog
```struct msg        /* 创建消息类型结构体 */
{
  char *tag;
  rt_uint32_t dat;
};

struct rt_mailbox mb;
/* 用于放邮件的内存池 */
char mb_pool[128];

static void mylog_entry(void *parameter)
{
 struct msg *msg_ptr;
 
 while(1)
 {
 if (rt_mb_recv(&mb, (rt_ubase_t *)&msg_ptr, RT_WAITING_FOREVER) == RT_EOK)
 {
 rt_kprintf("[%s] data is:%d ",msg_ptr -> tag, msg_ptr -> dat); /* 发送日志数据 */
 }
 rt_thread_delay(100);
 } 
}```2，系统跑起来，利用事件来改变LED的不同状态（我的板子上只有一个按键和LED），所以只有温度事件，来改变LED状态
```int led_alert_init(void)
{
 rt_err_t ret;
 static rt_thread_t led_event_tid = RT_NULL;

rt_pin_mode(LED_ALERT_PIN, PIN_MODE_OUTPUT);
    led_alert_off();

ret = rt_event_init(&led_event,
 "LED_ALARM",
 RT_IPC_FLAG_FIFO);
 if (ret != RT_EOK)
 {
 rt_kprintf("event init failed. ");
 return -1;
 }

led_event_tid = rt_thread_create("Led_Event",
                                     led_entry,
                                     RT_NULL,
                                     512,
                                     10,
                                     20);
    if (led_event_tid != RT_NULL)
    {
        rt_thread_startup(led_event_tid);
    }

return RT_EOK;
}

void led_entry(void *parameter)
{
    rt_err_t ret;
    rt_uint32_t event_now;

while (1)
    {
        ret = rt_event_recv(&led_event,
                            (EVENT_LED_ON | EVENT_LED_OFF | EVENT_LED_BLINK), /* 接收事件 */
                            RT_EVENT_FLAG_OR | RT_EVENT_FLAG_CLEAR,           /* 接收选项 */
                            RT_WAITING_FOREVER,                               /* 超时时间 */
                            &event_now);
        if (ret == RT_EOK)
        {
            if (event_now & EVENT_LED_ON)
            {
                led_alert_on();
            }
            if (event_now & EVENT_LED_OFF)
            {
                led_alert_off();
            }
            if (event_now & EVENT_LED_BLINK)
            {
                set_alert_hz_blink();
                set_alert_hz_blink();
            }
        }
    }
}```2.1，温湿度线程的事件判断，对应LED的不同事件状态,key_status%2 != 0判断按键奇数
```    rt_device_control(dev, RT_SENSOR_CTRL_SET_ODR, (void *)(&get_data_freq));

while (1)
 {
 if (key_status%2 != 0)
 {
 res = rt_device_read(dev, 0, &sensor_data, 1);
 if (res != 1)
 {
 rt_kprintf("read data failed! result is %d ", res);
 rt_device_close(dev);
 return;
 }
 else
 { 
 if (sensor_data.data.temp >= 0)
 {
 uint8_t temp = (sensor_data.data.temp & 0xffff) >> 0; // get temp
 uint8_t humi = (sensor_data.data.temp & 0xffff0000) >> 16; // get humi
 
 if(temp > UPPER_TEMP)rt_event_send(&led_event, EVENT_LED_ON);
 else rt_event_send(&led_event, EVENT_LED_BLINK);
 // rt_kprintf("temp:%d, humi:%d " ,temp, humi);
 mylog("temp :",temp);
 mylog("humi :",humi);
 
 }
 }
 }
 else rt_event_send(&led_event, EVENT_LED_OFF);
 
 rt_thread_mdelay(1000);
 }```2.2，按键中断中累加按键次数```rt_uint8_t key_status = 0;

void key_callback1(void *args)
{
  if (rt_pin_read(KEY_PIN) == PIN_LOW)
  {
    rt_pin_write(KEY_PIN, PIN_LOW);
		
    if(key_status == 255)key_status = 0;
		// rt_kprintf("key_status = %d", key_status);
    key_status++;

// rt_kprintf("turn on led! ");
 }
 else if (rt_pin_read(KEY_PIN) == PIN_HIGH)
 {
 // rt_pin_write(LED_ALERT_PIN, PIN_HIGH);
 // rt_kprintf("turn off led! ");
 }
}```
3，一点小坑，我的芯片flash只有64K但是各模块的甲醛+pm2.5+led+key+温湿度组合起来就超过64K了。
在MDK把代码优化跳到了level-1，我之后删了几个模块又调回了level-0这时候编译完串口打印会各种乱码！！！
搞了我一下午！！！

4，成果图

![QQ图片20191101181639.png](https://oss-club.rt-thread.org/uploads/201911/01/181657xwwbeb6g1af2fk8w.png)