程序运行延迟

发布于 2013-11-27 17:37:53 浏览：2894 订阅该版

4 个回答

jiezhi320 2013-11-27

这家伙很懒，什么也没写！

omania 2013-11-27

这家伙很懒，什么也没写！

用的主芯片是LPC1768，如下是application代码，led线程文件，及led文件

```

/*
 * File      : application.c
 * This file is part of RT-Thread RTOS
 * COPYRIGHT (C) 2009, RT-Thread Development Team
 *
 * The license and distribution terms for this file may be
 * found in the file LICENSE in this distribution or at
 * http://www.rt-thread.org/license/LICENSE
 *
 * Change Logs:
 * Date           Author       Notes
 * 2009-01-05     Bernard      the first version
 * 2010-03-04     Magicoe      for LPC1766 version
 * 2010-05-02     Aozima       add led function
 * 2010-05-24     Bernard      add filesystem initialization and move led function to led.c
 */

/**
 * @addtogroup LPC17
 */
/*@{*/

#include <rtthread.h>

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

#ifdef RT_USING_LWIP
#include <lwip/sys.h>
#include <lwip/api.h>
#include <netif/ethernetif.h>
#endif
#include "led.h"
/* thread phase init */
void rt_init_thread_entry(void *parameter)
{
    /* Filesystem Initialization */
#ifdef RT_USING_DFS
    {
        /* init the device filesystem */
        dfs_init();

/* init the elm FAT filesystam*/
        elm_init();

/* mount sd card fat partition 1 as root directory */
        if (dfs_mount("sd0", "/", "elm", 0, 0) == 0)
            rt_kprintf("File System initialized!
");
        else
            rt_kprintf("File System init failed!
");
    }
#endif

/* LwIP Initialization */
#ifdef RT_USING_LWIP
    {
        extern void lwip_sys_init(void);
        extern void lpc17xx_emac_hw_init(void);

eth_system_device_init();

/* register ethernetif device */
        lpc17xx_emac_hw_init();
        /* init all device */
        rt_device_init_all();

/* init lwip system */
        lwip_sys_init();
        rt_kprintf("TCP/IP initialized!
");
    }
#endif
}

static char led_thread_stack[512];

/* 线程的TCB控制块*/
static struct rt_thread led_thread;
extern	void led_thread_entry(void* parameter);

//////////////////////////////////////////////////////////////////////////////////////////

int rt_application_init()
{
    rt_thread_t init_thread;

#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);

//Thread初始化
   	rt_thread_init(&led_thread,"led",led_thread_entry, RT_NULL, &led_thread_stack[0], sizeof(led_thread_stack),	25, 8);
		//Thread运行
	rt_thread_startup(&led_thread);

return 0;
}

/*@}*/

//led_thread.c 文件

#include <rthw.h>
#include <rtthread.h>
#include "LPC17xx.h"
#include "led.h"
	 /////////////////////////////////////////////////////////////////////////////////
void led_thread_entry(void* parameter)
{				
//	int i;
	rt_hw_led_init();
	while(1)
	{

rt_hw_led_on(0);
	 rt_hw_led_off(1);		
	 rt_thread_delay(50);

rt_hw_led_on(1);
	 rt_hw_led_off(0);		
	 rt_thread_delay(50);
	}
}

led.c文件

#include "LPC17xx.h"
#include "led.h"

void rt_hw_led_init(void)
{
//	LPC_PINCON->PINSEL2 =0;   	//

LPC_GPIO2->FIODIR0 |= 1<<0; /* led0:P2.0 */
    LPC_GPIO2->FIODIR0 |= 1<<1; /* led1:P2.1 */
	LPC_GPIO2->FIODIR0 |= 1<<2; /* led2:P2.2 */
	LPC_GPIO2->FIODIR0 |= 1<<3; /* led3:P2.3 */
	LPC_GPIO2->FIODIR0 |= 1<<4; /* led4:P2.4 */
	LPC_GPIO2->FIODIR0 |= 1<<5; /* led5:P2.5 */
	LPC_GPIO2->FIODIR0 |= 1<<6; /* led6:P2.6 */
	LPC_GPIO2->FIODIR0 |= 1<<7; /* led7:P2.7 */
}

void rt_hw_led_on(rt_uint32_t led)
{
    switch(led)
    {
    case 0: /* P2.0 = 1 */
        LPC_GPIO2->FIOSET0 = 1<<0;
        break;
    case 1: /* P2.1 = 1 */
        LPC_GPIO2->FIOSET0 = 1<<1;
        break;
    case 2: /* P2.2 = 1 */
        LPC_GPIO2->FIOSET0 = 1<<2;
        break;
    case 3: /* P2.3 = 1 */
        LPC_GPIO2->FIOSET0 = 1<<3;
        break;
    case 4: /* P2.4 = 1 */
        LPC_GPIO2->FIOSET0 = 1<<4;
        break;
    case 5: /* P2.5 = 1 */
        LPC_GPIO2->FIOSET0 = 1<<5;
        break;
    case 6: /* P2.6 = 1 */
        LPC_GPIO2->FIOSET0 = 1<<6;
        break;
    case 7: /* P2.7 = 1 */
        LPC_GPIO2->FIOSET0 = 1<<7;
        break;
    default:
        break;
    }
}

void rt_hw_led_off(rt_uint32_t led)
{
    switch(led)
    {
    case 0: /* P2.0 = 0 */
        LPC_GPIO2->FIOCLR0 = 1<<0;
        break;
    case 1: /* P2.1 = 0 */
        LPC_GPIO2->FIOCLR0 = 1<<1;
        break;
	case 2: /* P2.2 = 1 */
        LPC_GPIO2->FIOCLR0 = 1<<2;
        break;
    case 3: /* P2.3 = 1 */
        LPC_GPIO2->FIOCLR0 = 1<<3;
        break;
    case 4: /* P2.4 = 1 */
        LPC_GPIO2->FIOCLR0 = 1<<4;
        break;
    case 5: /* P2.5 = 1 */
        LPC_GPIO2->FIOCLR0 = 1<<5;
        break;
    case 6: /* P2.6 = 1 */
        LPC_GPIO2->FIOCLR0 = 1<<6;
        break;
    case 7: /* P2.7 = 1 */
        LPC_GPIO2->FIOCLR0 = 1<<7;
        break;
    default:
        break;
    }
}
```

其他系统文件，我都没动