MDK+DNW+Supervivi下载裸机程序到nand flash

#include<s3c2440.h> #define Led1_On() {GPBDAT&=(~(1<<5));} #define Led1_Off() {GPBDAT|=(1<<5);} #define Led2_On() {GPBDAT&=(~(1<<6));} #define Led2_Off() {GPBDAT|=(1<<6);} #define Led3_On() {GPBDAT&=(~(1<<7));} #define Led3_Off() {GPBDAT|=(1<<7);} #define Led4_On() {GPBDAT&=(~(1<<8));} #define Led4_Off() {GPBDAT|=(1<<8);} void Led_Init(void) { GPBCON&=~((3<<10)|(3<<12)|(3<<14)|(3<<16)); GPBCON|=((1<<10)|(1<<12)|(1<<14)|(1<<16));//设置GPB5-8口为输出功能 GPBUP&=~((1<<5)|(1<<6)|(1<<7)|(1<<8));//上拉电阻使能 GPBDAT|=(1<<5)|(1<<6)|(1<<7)|(1<<8);//令GPBDAT5-8均为高电平，即令4个led灯全灭 } int main() { Led_Init(); Led1_On(); //LED1亮 Led3_On(); //LED2亮 while(1); }