基于LPC1114的学习型红外遥控器
烁灯的程序。
![](../img/eep/emb/emb-486395mtyqxycmv3.jpg)
#include
#include
//---------------------------------------------------------
void sysint(void);
//---------------------------------------------------------
main(void)
{
uint32_t i;
/* Enable AHB clock to the GPIO domain. */
LPC_SYSCON->SYSAHBCLKCTRL |= (1<<6);
/* Set up NVIC when I/O pins are configured as external interrupts. */
NVIC_EnableIRQ(EINT0_IRQn);
NVIC_EnableIRQ(EINT1_IRQn);
NVIC_EnableIRQ(EINT2_IRQn);
NVIC_EnableIRQ(EINT3_IRQn);
LPC_GPIO0->DIR=0xFF;
while(1)
{
LPC_GPIO0->DATA=~LPC_GPIO0->DATA;
i=300000;
while(i--);
}
}
//---------------------------------------------------------
void sysint (void)
{
// uint32_t i;
#ifdef __DEBUG_RAM
LPC_SYSCON->SYSMEMREMAP = 0x1; /* remap to internal RAM */
#else
#ifdef __DEBUG_FLASH
LPC_SYSCON->SYSMEMREMAP = 0x2; /* remap to internal flash */
#endif
#endif
#if (CLOCK_SETUP) /* Clock Setup */
/* bit 0 default is crystal bypass,
bit1 0=0~20Mhz crystal input, 1=15~50Mhz crystal input. */
LPC_SYSCON->SYSOSCCTRL = 0x00;
/* main system OSC run is cleared, bit 5 in PDRUNCFG register */
LPC_SYSCON->PDRUNCFG &= ~(0x1<<5);
/* Wait 200us for OSC to be stablized, no status
indication, dummy wait. */
for ( i = 0; i < 0x100; i++ );
#if (MAIN_PLL_SETUP)
Main_PLL_Setup();
#endif
#endif /* endif CLOCK_SETUP */
/* System clock to the IOCON needs to be enabled or
most of the I/O related peripherals won't work. */
LPC_SYSCON->SYSAHBCLKCTRL |= (1<<16);
return;
}
心情:利用了2天的业余时间,终于LED灯闪亮了,感觉LPC1114的功能真的很强大,比一般的51单片机复杂的多。以后要多努力学习了。
不知不觉已经11点多了。在喝一瓶,洗洗睡了。
GPIO"库"函数中文说明
NXP的LPC11XX功能很强大。"库"函数也非常多,功能也很强大,充分理解"库"函数能帮助我们快速学习LPC11XX,下面是英文和中文"库"函数的翻译,希望能帮助大家快速学习LPC11XX,以后我会抽出时间,翻译其他功能的"库"函数。
/*****************************************************************************
* gpio.c: GPIO C file for NXP LPC11xx Family Microprocessors
*
* Copyright(C) 2008, NXP Semiconductor
* All rights reserved.
*
* History
* 2008.07.20 ver 1.00 Prelimnary version, first Release
*
*****************************************************************************/
#include "LPC11xx.h" /* LPC11xx Peripheral Registers */
#include "gpio.h"
/* Shadow registers used to prevent chance of read-modify-write errors */
/* Ultra-conservative approach... */
volatile uint32_t GPIOShadowPort0;
volatile uint32_t GPIOShadowPort1;
volatile uint32_t GPIOShadowPort2;
volatile uint32_t GPIOShadowPort3;
volatile uint32_t gpio0_counter = 0;
volatile uint32_t gpio1_counter = 0;
volatile uint32_t gpio2_counter = 0;
volatile uint32_t gpio3_counter = 0;
volatile uint32_t p0_1_counter = 0;
volatile uint32_t p1_1_counter = 0;
volatile uint32_t p2_1_counter = 0;
volatile uint32_t p3_1_counter = 0;
/*****************************************************************************
** Function name: PIOINT0_IRQHandler
**
** Descriptions: Use one GPIO pin(port0 pin1) as interrupt source
**
** parameters: None
** Returned value: None
**
*****************************************************************************/
void PIOINT0_IRQHandler(void)
{
uint32_t regVal;
gpio0_counter++;
regVal = GPIOIntStatus( PORT0, 1 );
if ( regVal )
{
p0_1_counter++;
GPIOIntClear( PORT0, 1 );
}
return;
}
/*****************************************************************************
** Function name: PIOINT1_IRQHandler
**
** Descriptions: Use one GPIO pin(port1 pin1) as interrupt source
**
** parameters: None
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