RT-Thread-[第3期空气质量分析仪]第1周作业--砍柴人三号RT-Thread问答社区

[第3期空气质量分析仪]第1周作业--砍柴人三号

发布于 2019-10-18 20:43:48 浏览：917 订阅该版

* 本帖最后由 nsdcwj 于 2019-10-18 20:47 编辑 *

一、平台介绍
        由于后续工作项目需要用到有线网络，选择了采用STM32F407Z6芯片的启明欣欣开发板。开发板包含RJZ45网口、DHT11温度传感器接口、3个LED指示灯、5向按键、6个串口、JTAG/SWD烧录接口等。

二、环境搭建
1、使用J-Link连接JTAG接口作为程序仿真和烧录。2、从RTT官方下载rt-thread包，所用开发板跟正点原子的stm32f407-atk-explorer硬件基本一样，所以选用stm32f407-atk-explorer的bsp来做修改。3、选用串口3-TLL作为与电脑通讯的console。在env中，menuconfig—RT-Thread Kernel – Kenel Dvice Object，选择(*)Using console for rt_kprintf，并修改(uart3)the device name for console。然后在Hardware Drivers Config – Onboard PeripheralDrivers中选中(*)EnableCOM3(uart3)4、Scons –target=mdk5生产keil工程。三、任务实现
1、LED报警任务实现        在application文件下新建led_alert.c和led_alert.h，并在keil工程中的Applictions目录下添加led_alert.c文件。代码如下：
```/* defined the LED0 pin: PE3 */
#define LED0_PIN    GET_PIN(E, 3)
#define LED1_PIN    GET_PIN(E, 4)
#define LED2_PIN    GET_PIN(G, 9)

void led_init(void)
{
 rt_pin_mode(LED0_PIN, PIN_MODE_OUTPUT); //设置LED0_PIN，输出模式
 rt_pin_mode(LED1_PIN, PIN_MODE_OUTPUT); //设置LED1_PIN，输出模式
 rt_pin_mode(LED2_PIN, PIN_MODE_OUTPUT); //设置LED2_PIN，输出模式
 rt_pin_write(LED0_PIN, PIN_HIGH); //LED共阳，高电平时灭灯
 rt_pin_write(LED1_PIN, PIN_HIGH); //LED共阳，高电平时灭灯
 rt_pin_write(LED2_PIN, PIN_HIGH); //LED共阳，高电平时灭灯
 rt_kprintf("LED init! ");
}

void led0_on(void)
{
        rt_pin_write(LED0_PIN, PIN_LOW); //LED共阳，低电平时亮灯
}

void led1_on(void)
{
        rt_pin_write(LED1_PIN, PIN_LOW); //LED共阳，低电平时亮灯
}

void led2_on(void)
{
        rt_pin_write(LED2_PIN, PIN_LOW); //LED共阳，低电平时亮灯
}

void led0_off(void)
{
        rt_pin_write(LED0_PIN, PIN_HIGH); //LED共阳，高电平时灭灯        
}

void led1_off(void)
{
        rt_pin_write(LED1_PIN, PIN_HIGH); //LED共阳，高电平时灭灯        
}

void led2_off(void)
{
        rt_pin_write(LED2_PIN, PIN_HIGH); //LED共阳，高电平时灭灯        
}

void led0_blink(void)
{
        rt_pin_write(LED0_PIN, PIN_LOW); //LED共阳，低电平时亮灯
        rt_thread_mdelay(200);
        rt_pin_write(LED0_PIN, PIN_HIGH); //LED共阳，高电平时灭灯
        rt_thread_mdelay(200);                
}

void led1_blink(void)
{
        rt_pin_write(LED1_PIN, PIN_LOW); //LED共阳，低电平时亮灯
        rt_thread_mdelay(200);
        rt_pin_write(LED1_PIN, PIN_HIGH); //LED共阳，高电平时灭灯
        rt_thread_mdelay(200);                
}

void led2_blink(void)
{
        rt_pin_write(LED2_PIN, PIN_LOW); //LED共阳，低电平时亮灯
        rt_thread_mdelay(200);
        rt_pin_write(LED2_PIN, PIN_HIGH); //LED共阳，高电平时灭灯
        rt_thread_mdelay(200);                
}```

2、按键模块任务实现        在application文件下新建key.c和key.h，并在keil工程中的Applictions目录下添加key.c文件。代码如下：为了解决在evn中menuconfig后会移除led_alert.c和key.c，需要修改application目录下的Sconscript，修改后文件如下：
```import rtconfig
from building import *

cwd     = GetCurrentDir()
CPPPATH = [cwd, str(Dir('#'))]

src     = Split("""
main.c
led_alert.c
key.c
""")

group = DefineGroup('Applications', src, depend = [''], CPPPATH = CPPPATH)
Return('group')```
使用了4个按键，Key.c代码如下：
```#include <rtthread.h>
#include <rtdevice.h>
#include <board.h>
#include <key.h>
#include <led_alert.h>

/* defined the KEY0 pin: PF9 */
#define KEY0_PIN    GET_PIN(F, 9)
#define KEY1_PIN    GET_PIN(F, 8)
#define KEY2_PIN    GET_PIN(F, 7)
#define KEY3_PIN    GET_PIN(F, 6)

void key0_cb(void *args)
{
 if(rt_pin_read(KEY0_PIN))
 {
 led0_off();
 rt_kprintf("KEY0:Up! ");
 }
 else
 {
 led0_on();
 rt_kprintf("KEY0:Press! ");
 }
}

void key1_cb(void *args)
{
 if(rt_pin_read(KEY1_PIN))
 {
 led1_off();
 rt_kprintf("KEY1:Up! ");
 }
 else
 {
 led1_on();
 rt_kprintf("KEY1:Press! ");
 }
}

void key2_cb(void *args)
{
 if(rt_pin_read(KEY2_PIN))
 {
 led2_off();
 rt_kprintf("KEY2:Up! ");
 }
 else
 {
 led2_on();
 rt_kprintf("KEY2:Press! ");
 }
}

void key_init(void)
{
        rt_pin_mode(KEY0_PIN, PIN_MODE_INPUT_PULLUP); //设置KEY0_PIN，输入模式，上拉
        rt_pin_attach_irq(KEY0_PIN, PIN_IRQ_MODE_RISING_FALLING, key0_cb, RT_NULL);
    rt_pin_irq_enable(KEY0_PIN, PIN_IRQ_ENABLE);
    
        rt_pin_mode(KEY1_PIN, PIN_MODE_INPUT_PULLUP); //设置KEY1_PIN，输入模式，上拉
    rt_pin_attach_irq(KEY1_PIN,PIN_IRQ_MODE_RISING_FALLING, key1_cb, RT_NULL);
    rt_pin_irq_enable(KEY1_PIN, PIN_IRQ_ENABLE);
    
        rt_pin_mode(KEY2_PIN, PIN_MODE_INPUT_PULLUP); //设置KEY0_PIN，输入模式，上拉
    rt_pin_attach_irq(KEY2_PIN,PIN_IRQ_MODE_RISING_FALLING,key2_cb, RT_NULL);
    rt_pin_irq_enable(KEY2_PIN, PIN_IRQ_ENABLE);

rt_kprintf("KEY PIN init! ");
}
```
3、温湿度传感器任务实现 选用ATH10温湿度传感器，在RTT软件包上有写好的驱动，直接使用软件包即可。步骤如下：
（1）选择aht10驱动：RT-Thread online packages – peripheral libraries and drivers,选择(*)aht10: digital humidity and temperaturesensor ath10 driver library。（2）添加I2C驱动：Hardware Drivers Config – On-chip Peripheral Drivers,选择(*)Enable I2C1 BUS(software simulation)。
（3）添加Sensor框架：RT-Thread Components – Device Drivers, 选(*)Using Sensor device drivers。

（4）更新在线软件包，pkgs –update；更新keil工程，scons –target=mdk5。会发现在工程文件中增加了aht10文件夹和Sensors文件夹。
4、main.c```#include <rtthread.h>
#include <rtdevice.h>
#include <board.h>
#include <led_alert.h>
#include <key.h>
#include <aht10.h>
#include "sensor_asair_aht10.h"

int main(void)
{
    int count = 1;
    struct rt_sensor_config cfg;
    led_init();
    key_init();
    
    cfg.intf.dev_name = "i2c1";
    cfg.intf.user_data = (void *)AHT10_I2C_ADDR;
    rt_hw_aht10_init("aht10", &cfg);
    led0_blink();

while(count++)
    {
       aht10_read_temperature();
       aht10_read_humidity();
       rt_thread_mdelay(1000);
    }
    return RT_EOK;
}
``` 
 
四、      运行结果
 
由于论坛发帖无法显示图片，仅复制文字。
```
 \ | /
- RT -     Thread Operating System
 / | \     4.0.1 build Oct 18 2019
 2006 - 2019 Copyright by rt-thread team
lwIP-2.1.0 initialized!
[I/SAL_SKT] Socket Abstraction Layer initialize success.
LED init!
KEY PIN init!
[I/sensor] rt_sensor init success
[I/sensor] rt_sensor inKEY1:Press!
KEY2:Press!
t success
KEY0:Press!
temp:26  
humi:57
temp:26  
humi:57

```