[实战入门学习营] [第二期空气质量分析仪]第1周作业

发布于 2019-08-30 01:41:15 浏览：969 订阅该版

目标：
任务 1、BSP 跑起来
任务 2、实现按键模块/* 引脚编号，通过查看设备驱动文件drv_gpio.c确定 */
#define KER_USER_PIN_NUM							(45)//GET_PIN(C, 13)
int key_value;
static void key_scan(void)
{
		key_value ++;
		key_value = key_value % 3;
}

static void pin_key_sample(void)
{
    /* 按键0引脚为输入模式 */
    rt_pin_mode(KER_USER_PIN_NUM, PIN_MODE_INPUT_PULLUP);
    /* 绑定中断，下降沿模式，回调函数名为beep_on */
    rt_pin_attach_irq(KER_USER_PIN_NUM, PIN_IRQ_MODE_FALLING, key_scan, RT_NULL);
    /* 使能中断 */
    rt_pin_irq_enable(KER_USER_PIN_NUM, PIN_IRQ_ENABLE);
}
/* 导出到 msh 命令列表中 */
MSH_CMD_EXPORT(pin_key_sample, pin key sample);

任务 3、实现报警模块

#include <rtthread.h>
#include <rtdevice.h>
#include <board.h>
#include "key.h"

/* 指向线程控制块的指针 */
static rt_thread_t tid 					= RT_NULL;
/* 指向信号量的指针 */
static rt_sem_t sem_led_blink 	= RT_NULL;
static rt_sem_t sem_led_on 			= RT_NULL;

#define THREAD_STACK_SIZE				(1024)
#define THREAD_PRIORITY					(10)
#define THREAD_TIMESLICE				(20)
/* defined the LED0 pin: PA5 */
#define LED0_PIN								GET_PIN(A, 5)
#define LED_B       						GET_PIN(A, 6)

void led_init(void)
{
 rt_kprintf("init led! ");
 /* set LED0 pin mode to output */
 rt_pin_mode(LED0_PIN, PIN_MODE_OUTPUT);
}

void led_on(void)
{
 rt_kprintf("turn on led! ");
 /* 拉 高 LED引 脚 */
 rt_pin_write(LED0_PIN, PIN_HIGH);		
}

void led_off(void)
{
 rt_kprintf("turn off led! ");
 /* 拉 低 LED引 脚 */
 rt_pin_write(LED0_PIN, PIN_LOW);
}

void led_blink(void)
{
 static rt_bool_t state = PIN_HIGH;
 rt_kprintf("blink led! ");
 state = ~state;
 rt_pin_write(LED0_PIN, state);
}

void thread_sem_entry(void *pra)
{
    while(1)
    {
        if(key_value == 1)
        {/* 释放一次信号量 */
            rt_thread_mdelay(500); 
            rt_sem_release(sem_led_blink);
        }
				else if(key_value == 2)
				{
						rt_sem_release(sem_led_on);
				}
				else
				{
						/*do_nothing*/
				}
    }   
}

void thread_led_entry(void *pra)
{
    led_init();
	
    while(1)
    {
        if (rt_sem_take(sem_led_blink, RT_WAITING_FOREVER) == RT_EOK)
        {
            led_blink();
        }
				else if(rt_sem_take(sem_led_on, RT_WAITING_FOREVER) == RT_EOK)
				{
            led_on();				
				}
				else
				{
				    led_off();	
				}
				rt_thread_mdelay(100); 
    }   
}

int led_alert_sample()
{
 /* 创建2个信号量，初始值是0 */
 sem_led_blink = rt_sem_create("sem_led_blink", 0, RT_IPC_FLAG_PRIO);
 if (sem_led_blink == RT_NULL)
 {
 rt_kprintf("create sem thread failed ");
 return RT_ERROR;
 }

sem_led_on = rt_sem_create("sem_led_on", 0, RT_IPC_FLAG_PRIO);
 if (sem_led_on == RT_NULL)
 {
 rt_kprintf("create sem thread failed ");
 return RT_ERROR;
 }
 /* 创建线程 */
 tid = rt_thread_create("thread_sem",
 thread_sem_entry, RT_NULL, /* thread_sem_entry, 入口参数是RT_NULL */
 THREAD_STACK_SIZE, THREAD_PRIORITY-1, THREAD_TIMESLICE);
 if (tid != RT_NULL)
 rt_thread_startup(tid);
 else
 {
 rt_kprintf("create sem thread failed ");
 return RT_ERROR;
 }

/* 创建线程 */
 tid = rt_thread_create("thread_led",
 thread_led_entry, RT_NULL, /* thread_sem_entry, 入口参数是RT_NULL */
 THREAD_STACK_SIZE, THREAD_PRIORITY, THREAD_TIMESLICE);
 if (tid != RT_NULL)
 rt_thread_startup(tid);
 else
 {
 rt_kprintf("create led thread failed ");
 return RT_ERROR;
 }

return RT_EOK;
}

MSH_CMD_EXPORT(led_alert_sample,led_alert sample);

任务 4、实现温湿度传感器驱动（To be continue）
 \ | /
- RT -     Thread Operating System
 / | \     4.0.1 build Aug 30 2019
 2006 - 2019 Copyright by rt-thread team
[I/SAL_SKT] Socket Abstraction Layer initialize success.
[I/at.clnt] AT client(V1.2.0) on device uart6 initialize success.
[I/at.rw007] AT network initialize success!
[E/sensor.bosch.bme280] can not find device  
msh />pin_key_sample
msh />ps
thread   pri  status      sp     stack size max used left tick  error
-------- ---  ------- ---------- ----------  ------  ---------- ---
tshell    20  running 0x00000140 0x00001000    12%   0x00000009 000
at_clnt    9  suspend 0x000000ac 0x00000600    11%   0x00000001 000
tidle0    31  ready   0x00000048 0x00000100    35%   0x00000017 000
msh />led_alert_sample
init led!
msh />blink led!
blink led!
blink led!
blink led!
blink led!
blink led!
blink led!