LPC11U24 LED例子

深山明月

main.c

#include "LPC11Uxx.h"

#define LED_NUM 4

const unsigned long led_mask[] = {1UL << 8, 1UL << 9, 1UL << 10, 1UL << 11};


/*----------------------------------------------------------------------------
  initialize LED Pins
  PIO1.8, PIO1.9 PIO1.10, PIO1.11
*----------------------------------------------------------------------------*/
void LED_Init (void)
{
    LPC_SYSCON->SYSAHBCLKCTRL |= (1UL <<  6);     /* enable clock for GPIO      */

    /* configure GPIO as output */
    LPC_GPIO->DIR[1]  |= (led_mask[0] | led_mask[1] |led_mask[2] |led_mask[3]);

    LPC_GPIO->CLR[1]  |= (led_mask[0] | led_mask[1] |led_mask[2] |led_mask[3]);
}

/*----------------------------------------------------------------------------
  Function that turns on requested LED
*----------------------------------------------------------------------------*/
void LED_On (unsigned int num)
{
    if (num < LED_NUM)
    {
        LPC_GPIO->SET[1] |= led_mask[num];
    }
}

/*----------------------------------------------------------------------------
  Function that turns off requested LED
*----------------------------------------------------------------------------*/
void LED_Off (unsigned int num)
{
    if (num < LED_NUM)
    {
        LPC_GPIO->CLR[1]  = led_mask[num];
    }
}

/*----------------------------------------------------------------------------
  Function that outputs value to LEDs
*----------------------------------------------------------------------------*/
void LED_Out(unsigned int value)
{
    int i;

    for (i = 0; i < LED_NUM; i++)
    {
        if (value & (1<<i))
        {
            LED_On (i);
        }
        else
        {
            LED_Off(i);
        }
    }
}

void Delay(unsigned int DelayTimes)
{
    LPC_CT16B0->TCR = 0x02;
    LPC_CT16B0->PR = 12;
    LPC_CT16B0->MR0 = DelayTimes;
    LPC_CT16B0->IR = 0xFF;
    LPC_CT16B0->MCR = 0x04;
    LPC_CT16B0->TCR = 0x01;
   
    while(LPC_CT16B0->TCR & 0x01);
    LPC_CT16B0->TCR = 0x00;
}

void Delay_Us(unsigned int DelayTimes)
{
    LPC_CT16B0->TCR = 0x02;     // reset timer
    LPC_CT16B0->PR = 48;           // set prescaler
    LPC_CT16B0->MR0 = DelayTimes;
    LPC_CT16B0->IR = 0xFF;         // rese all interrupts
    LPC_CT16B0->MCR = 0x04;     // stop timer on match
    LPC_CT16B0->TCR = 0x01;      // Start timer
   
    while(LPC_CT16B0->TCR & 0x01);
    LPC_CT16B0->TCR = 0x00;     // Close timer
}

void Delay_Ms(unsigned int DelayTimes)
{
    LPC_CT16B0->TCR = 0x02;
    LPC_CT16B0->PR = 48000;
    LPC_CT16B0->MR0 = DelayTimes;
    LPC_CT16B0->IR = 0xFF;
    LPC_CT16B0->MCR = 0x04;
    LPC_CT16B0->TCR = 0x01;
   
    while(LPC_CT16B0->TCR & 0x01);
    LPC_CT16B0->TCR = 0x00;
}


int main(void)
{   
    LPC_SYSCON->SYSAHBCLKCTRL |= (1 << 7);  // 打开CT16B0时钟
   
    LED_Init ();
    LED_Off(0);
    LED_Off(1);
    LED_Off(2);
    LED_Off(3);
    for(;;)
    {
        LED_On(0);
        Delay_Ms(500);   
        
        LED_Off(0);
        Delay_Ms(500);
    }   
}

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深山明月

KEIL工程，编译后会在obj下生成bin.bin,文件，连接开发板后，电脑会多出一个1.9M大小的盘符，将bin件拷贝到该盘符中，按复位键后程序会自动运行。

深山明月

开发板图片

jobszheng5

这个小MCU用来玩USB简直再好不过了

jacky1982512

这个板子也是论坛里活动吗