lpc4370实验，点亮LED灯

sxdahss · 发表于 2016-4-15 10:39:32

自己新建的工程，keil 5.15版本功能led等交替闪烁
/*
* @brief Blinky example using sysTick
*
* @note
* Copyright(C) NXP Semiconductors, 2013
* All rights reserved.
*
* @par
* Software that is described herein is for illustrative purposes only
* which provides customers with programming information regarding the
* LPC products.  This software is supplied "AS IS" without any warranties of
* any kind, and NXP Semiconductors and its licensor disclaim any and
* all warranties, express or implied, including all implied warranties of
* merchantability, fitness for a particular purpose and non-infringement of
* intellectual property rights.  NXP Semiconductors assumes no responsibility
* or liability for the use of the software, conveys no license or rights under any
* patent, copyright, mask work right, or any other intellectual property rights in
* or to any products. NXP Semiconductors reserves the right to make changes
* in the software without notification. NXP Semiconductors also makes no
* representation or warranty that such application will be suitable for the
* specified use without further testing or modification.
*
* @par
* Permission to use, copy, modify, and distribute this software and its
* documentation is hereby granted, under NXP Semiconductors' and its
* licensor's relevant copyrights in the software, without fee, provided that it
* is used in conjunction with NXP Semiconductors microcontrollers.  This
* copyright, permission, and disclaimer notice must appear in all copies of
* this code.
*/

#include "board.h"
#include <stdio.h>
#include "stopwatch.h"

/*****************************************************************************
* Private types/enumerations/variables
****************************************************************************/
#define TICKRATE_HZ1 (1000) /* 10 ticks per second */
#define SDRAM_START_ADDRESS 0x28000000

/*****************************************************************************
* Public types/enumerations/variables
****************************************************************************/

/*****************************************************************************
* Private functions
****************************************************************************/

/*****************************************************************************
* Public functions
****************************************************************************/

/**
* @brief Handle interrupt from SysTick timer
* @return Nothing
*/
void SysTick_Handler(void)
{
static int x = 0;
if (x++ > 500) {
Board_LED_Toggle(0);
Board_LED_Toggle(1);
x = 0;
}
}

/* Set up and initialize all required blocks and functions related to the
board hardware */
void Board_Init(void)
{
/* Sets up DEBUG UART */
DEBUGINIT();

/* Initializes GPIO */
Chip_GPIO_Init(LPC_GPIO_PORT);

/* Initialize LEDs */
Board_LED_Init();
}

/**
* @brief main routine for blinky example
* @return Function should not exit.
*/
int main(void)
{
SystemCoreClockUpdate();
Board_Init();

/* Enable and setup SysTick Timer at a periodic rate */
SysTick_Config(SystemCoreClock / TICKRATE_HZ1);

while (1) {
__WFI();
}

return 0;
}

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