RT-Thread-v2.0.0移植到STM32及驅動LCD和測溫


先簡單記錄下安裝:

1. 安裝 sourcery工具鏈或 keil都行
安裝python 和 scons:
配置這些工具路徑以及RT-Thread源碼路徑RTT_ROOT,添加到環境變量

2. 開始編譯 bsp\stm32f10x工程,在編譯以前需要稍微修改如下幾個文件
rtconfig.py 此文件必須修改
rtconfig.h 此文件用於裁剪rt-thread(根據需要修改)
比如使用 keil工具來編譯:
修改rtconfig.py,
CROSS_TOOL='keil'
EXEC_PATH='D:\Keil_v5'
cmd命令行 cd到bsp\stm32f10x:
D:\rt-thread\bsp\stm32f10x>scons
即可在 bsp\stm32f10x路徑下生成 axf文件和bin文件
scons -c 清除編譯出來的文件,如.o
scons -j4 多線程編譯,2個線程/每個CPU核

 

主要在 rt-thread-v2.0.0\bsp\stm32f10x\ 下的文件進行修改和添加:

drivers\SConscript 添加驅動文件,

# add the general drivers.
src = Split("""
board.c
stm32f10x_it.c
led.c
LCD5110.c
sys.c
ds18b20.c
usart.c
""")

這些基本的驅動文件里的延時需要調試下。

其他文件不用怎么改,接下來在 applications\application.c 中創建自己的線程函數了,實現相關功能。

/*
application.c
2015.12.4 by Huangtao
 
 */

#include <board.h>
#include <rtthread.h>

#ifdef  RT_USING_COMPONENTS_INIT
#include <components.h>
#endif  /* RT_USING_COMPONENTS_INIT */

#ifdef RT_USING_DFS
/* dfs filesystem:ELM filesystem init */
#include <dfs_elm.h>
/* dfs Filesystem APIs */
#include <dfs_fs.h>
#endif

#ifdef RT_USING_RTGUI
#include <rtgui/rtgui.h>
#include <rtgui/rtgui_server.h>
#include <rtgui/rtgui_system.h>
#include <rtgui/driver.h>
#include <rtgui/calibration.h>
#endif

#include "led.h"
#include "LCD5110.h"
#include "ds18b20.h"

// Thread ID
static rt_thread_t led_id = RT_NULL;
static rt_thread_t lcd5110_id = RT_NULL;
static rt_thread_t ds18b20_id = RT_NULL;

#define CPU_USAGE_CALC_TICK    10
#define CPU_USAGE_LOOP        100

static rt_uint8_t  cpu_usage_major = 0, cpu_usage_minor= 0;
static rt_uint32_t total_count = 0;

static void cpu_usage_idle_hook()
{
    rt_tick_t tick;
    rt_uint32_t count;
    volatile rt_uint32_t loop;

    if (total_count == 0)
    {
        /* get total count */
        rt_enter_critical();
        tick = rt_tick_get();
        while(rt_tick_get() - tick < CPU_USAGE_CALC_TICK)
        {
            total_count ++;
            loop = 0;
            while (loop < CPU_USAGE_LOOP) loop ++;
        }
        rt_exit_critical();
    }

    count = 0;
    /* get CPU usage */
    tick = rt_tick_get();
    while (rt_tick_get() - tick < CPU_USAGE_CALC_TICK)
    {
        count ++;
        loop  = 0;
        while (loop < CPU_USAGE_LOOP) loop ++;
    }

    /* calculate major and minor */
    if (count < total_count)
    {
        count = total_count - count;
        cpu_usage_major = (count * 100) / total_count;
        cpu_usage_minor = ((count * 100) % total_count) * 100 / total_count;
    }
    else
    {
        total_count = count;

        /* no CPU usage */
        cpu_usage_major = 0;
        cpu_usage_minor = 0;
    }

}

/*void cpu_usage_get(rt_uint8_t *major, rt_uint8_t *minor)
{
    RT_ASSERT(major != RT_NULL);
    RT_ASSERT(minor != RT_NULL);

    *major = cpu_usage_major;
    *minor = cpu_usage_minor;
}*/

void cpu_usage_init()
{
    /* set idle thread hook */
    rt_thread_idle_sethook(cpu_usage_idle_hook);
}


/*
// led
ALIGN(RT_ALIGN_SIZE)
static rt_uint8_t led_stack[ 512 ];
static struct rt_thread led_thread;*/
static void led_thread_entry(void* parameter)
{
    rt_hw_led_init();

    while (1)
    {
        /* led1 on */
        rt_hw_led_on(0);

        // 順便清屏
        ClearScreen();

        rt_thread_delay( 100 ); /* sleep 1 second and switch to other thread */

        /* led1 off */
        rt_hw_led_off(0);

        // 順便清屏
        //ClearScreen();

        rt_thread_delay( 100 );

    }
}

// lcd5110
static void lcd5110_thread_entry(void* parameter)
{
    LcdInit();

    while(1)
    {
        DispString(15,0,"RT-Thread");
        DispString(0,1,"CPU:");
        DispNum(30,1,cpu_usage_major);
        DispChar(45,1,'%');

        rt_thread_delay( 5 );

    }

}

// ds18b20
static void ds18b20_thread_entry(void* parameter)
{
    short temperature = 0;
    while(DS18B20_Init());

    while(1)
    {
        DispString(0,3,"Temp: ");
        temperature = DS18B20_Get_Temp();
        if(temperature<0)
        {
            DispChar(40,3,'-');         
            temperature=-temperature;   
        }
        else 
            DispChar(40,3,' '); 

        DispNum(48,3,((u16)temperature)/10);    //顯示正數部分    
        DispChar(60,3,'.');     
        DispNum(67,3,((u16)temperature)%10);    //顯示小數部分 

        rt_thread_delay( 5 );
    }

}


void rt_init_thread_entry(void* parameter)
{
#ifdef RT_USING_COMPONENTS_INIT
    /* initialization RT-Thread Components */
    rt_components_init();
#endif

#ifdef  RT_USING_FINSH
    finsh_set_device(RT_CONSOLE_DEVICE_NAME);
#endif  /* RT_USING_FINSH */

    /* Filesystem Initialization */
#if defined(RT_USING_DFS) && defined(RT_USING_DFS_ELMFAT)
    /* mount sd card fat partition 1 as root directory */
    if (dfs_mount("sd0", "/", "elm", 0, 0) == 0)
    {
        rt_kprintf("File System initialized!\n");
    }
    else
        rt_kprintf("File System initialzation failed!\n");
#endif  /* RT_USING_DFS */

#ifdef RT_USING_RTGUI
    {
        extern void rt_hw_lcd_init();
        extern void rtgui_touch_hw_init(void);

        rt_device_t lcd;

        /* init lcd */
        rt_hw_lcd_init();

        /* init touch panel */
        rtgui_touch_hw_init();

        /* find lcd device */
        lcd = rt_device_find("lcd");

        /* set lcd device as rtgui graphic driver */
        rtgui_graphic_set_device(lcd);

#ifndef RT_USING_COMPONENTS_INIT
        /* init rtgui system server */
        rtgui_system_server_init();
#endif

        calibration_set_restore(cali_setup);
        calibration_set_after(cali_store);
        calibration_init();
    }
#endif /* #ifdef RT_USING_RTGUI */
}

int rt_application_init(void)
{
    rt_thread_t init_thread;


    /*
    rt_err_t result;
    // 靜態創建 led 線程 
    result = rt_thread_init(&led_thread,                // 線程控制塊內存地址
                            "led",                      // 線程名稱
                            led_thread_entry,           // 線程入口入口函數
                            RT_NULL,                    // 線程入口入口函數參數
                            (rt_uint8_t*)&led_stack[0], // 線程棧起始地址
                            sizeof(led_stack),          // 線程棧大小
                            20,                         // 線程優先級
                            5);                         // 線程時間片大小
    if (result == RT_EOK)
    {
        rt_thread_startup(&led_thread);
    }
    */

    // 動態創建 led 線程
    led_id = rt_thread_create("led",            // 線程名稱
                            led_thread_entry,   // 線程入口入口函數 
                            RT_NULL,            // 線程入口入口函數參數 
                            512,                // 線程棧大小
                            21,                 // 線程優先級
                            10);                // 線程時間片大小
    // 如果獲得線程控制塊,啟動這個線程
    if (led_id != RT_NULL) 
        rt_thread_startup(led_id);
    
    // 動態創建 lcd5110 線程
    lcd5110_id = rt_thread_create("lcd5110",        // 線程名稱
                            lcd5110_thread_entry,   // 線程入口入口函數 
                            RT_NULL,                // 線程入口入口函數參數 
                            2048,                   // 線程棧大小
                            20,                     // 線程優先級
                            20);                    // 線程時間片大小
    if (lcd5110_id != RT_NULL) 
        rt_thread_startup(lcd5110_id);

    // 動態創建 ds18b20 線程
    ds18b20_id = rt_thread_create("ds18b20",        // 線程名稱
                            ds18b20_thread_entry,   // 線程入口入口函數 
                            RT_NULL,                // 線程入口入口函數參數 
                            2048,                   // 線程棧大小
                            19,                     // 線程優先級
                            20);                    // 線程時間片大小
    if (ds18b20_id != RT_NULL) 
        rt_thread_startup(ds18b20_id);

    // CPU %
    cpu_usage_init();

#if (RT_THREAD_PRIORITY_MAX == 32)
    init_thread = rt_thread_create("init",
                                   rt_init_thread_entry, RT_NULL,
                                   2048, 8, 20);
#else
    init_thread = rt_thread_create("init",
                                   rt_init_thread_entry, RT_NULL,
                                   2048, 80, 20);
#endif

    if (init_thread != RT_NULL)
        rt_thread_startup(init_thread);

    return 0;
}

/*@}*/

這些線程時間片和每個線程中的延時根據需要調整,不然出現屏幕顯示異常。^_^

下面放張效果圖:

 


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