/*#include<reg52.h> #define uint unsigned int #define uchar unsigned char #define uchar unsigned char sbit K1=P3^4; sbit K2=P3^5; sbit ledr=P1^0; sbit ledg=P1^1; sbit ledb=P1^2; bit LEDDirection=0;//LED控制方向0：渐亮1：渐灭 char pwm=0; char pwmr=0; char scw=0;//中断记数 char tt=0; char n; void dealy(uint z); void Timer0Init(void) { TMOD=0x01; TH0=0xff; TL0=0x47; EX0=1; IT0=0; PX0=1; ET0=1; TR0=1; EA=1; } void main() { Timer0Init(); while(1){ if(K1==0) { dealy (1); if(K1==0) {TR0=1; ledr=0; dealy(5); TR0=0; } } if(K2==0) { dealy (1); if(K2==0) { while(1) { ledr=0; //亮 dealy(100-n*10); ledr=1; //熄 dealy(n*10); } } } } } void Time0Isr(void) interrupt 1 { // pwm=0; TH0=0xff; TL0=0x47; scw++; }*/ #include<reg52.h> #define uchar unsigned char bit LEDDirection=0; sbit P2_0=P1^0; sbit key1=P3^4; sbit key2=P3^5; sbit key3=P3^6; uchar zkb,i,t;// zkb指占空比 uchar pwm; void delay(uchar z) { uchar x,y; for(x=z;x>0;x--) for(y=110;y>0;y--); } void init() //初始化函数 { TMOD=0X01; TH0=(65536-1000)/256; TL0=(65536-1000)%256; EA=1; ET0=1; TR0=1; } void keyscan() //键盘扫描 { P3=0XFF; if(key1==0) { delay(5); if(key1==0) { while(!key1); if(zkb<9) { zkb++; } } } if(key2==0) { delay(5); if(key2==0) { while(!key2); if(zkb>0) { zkb--; } } } if(key3==0) {TR0=1; delay(5); if(key3==0) {while(!key3); if((zkb<=9)&&(0==LEDDirection)) { zkb++; if(zkb>9) { LEDDirection=1; zkb=9; } } if((zkb>=0 )&&(1==LEDDirection)) { zkb--; if(zkb<0 ) { LEDDirection=0; zkb=0 ; //dealy(3000); } } } //pwm=pwmr; } } void main() //主函数 { zkb=2; init(); while(1) { keyscan(); } } void time0(void) interrupt 1 //中断函数 { TH0=(65536-200)/256; TL0=(65536-200)%256; ++i; if(i>10) { i=0; }; if(i<=zkb) { P2_0=1; } else P2_0=0; } /*void time0(void) interrupt 0 //中断函数 { TH0=(65536-1000)/256; TL0=(65536-1000)%256; ++i; if(i>10) { i=0; }; if(i<=zkb) { P2_0=1; } else P2_0=0; }*/
标签： 调光
上传时间： 2016-07-02
上传用户：184890962
# include<stdio.h> # include<math.h> # define N 3 main(){ float NF2(float *x,float *y); float A[N][N]={{10,-1,-2},{-1,10,-2},{-1,-1,5}}; float b[N]={7.2,8.3,4.2},sum=0; float x[N]= {0,0,0},y[N]={0},x0[N]={}; int i,j,n=0; for(i=0;i<N;i++) { x[i]=x0[i]; } for(n=0;;n++){ //计算下一个值 for(i=0;i<N;i++){ sum=0; for(j=0;j<N;j++){ if(j!=i){ sum=sum+A[i][j]*x[j]; } } y[i]=(1/A[i][i])*(b[i]-sum); //sum=0; } //判断误差大小 if(NF2(x,y)>0.01){ for(i=0;i<N;i++){ x[i]=y[i]; } } else break; } printf("经过%d次雅可比迭代解出方程组的解：\n",n+1); for(i=0;i<N;i++){ printf("%f ",y[i]); } } //求两个向量差的二范数函数 float NF2(float *x,float *y){ int i; float z,sum1=0; for(i=0;i<N;i++){ sum1=sum1+pow(y[i]-x[i],2); } z=sqrt(sum1); return z; }
上传时间： 2019-10-13
上传用户：大萌萌撒
include<reg52.h> #define uint unsigned int #define uchar unsigned char uint temp,aa,wang,qian,bai,shi,ge; sbit dula=P2^6; sbit wela=P2^7; uchar code table[]={ 0x3f,0x06,0x5b,0x4f, 0x66,0x6d,0x7d,0x07, 0x7f,0x6f,0x77,0x7c, 0x39,0x5e,0x79,0x71}; void display( uint wang,uint qian,uint bai,uint shi,uint ge); void delay(uint z); void init(); void main() { init();//初始化子程序 while(1) { if(aa==20) { aa=0; temp++; if(temp==99999) { temp=0; } wang=temp/10000; qian=(temp-wang*10000)/1000; bai=(temp-wang*10000-qian*1000)/100; shi=(temp-wang*10000-qian*1000-bai*100)/10; ge=temp%10; } display(wang,qian, bai,shi,ge); } } void delay(uint z) { uint x,y; for(x=z;x>0;x--) for(y=110;y>0;y--); } void display(uint wang,uint qian,uint bai,uint shi,uint ge) { dula=1; P0=table[wang]; dula=0; P0=0xff; wela=1; P0=0xfe; wela=0; delay(1); dula=1; P0=table[qian]; dula=0; P0=0xff; wela=1; P0=0xfd; wela=0; delay(1); dula=1; P0=table[bai]; dula=0; P0=0xff; wela=1; P0=0xfb; wela=0; delay(1); dula=1; P0=table[shi]; dula=0; P0=0xff; wela=1; P0=0xf7; wela=0; delay(1); dula=1; P0=table[ge]; dula=0; P0=0xff; wela=1; P0=0xef; wela=0; delay(1); } void init() { wela=0; dula=0; temp=0; TMOD=0x01; TH0=(65536-50000)/256; TL0=(65536-50000)%256; EA=1; ET0=1; TR0=1; } void timer0() interrupt 1 { TH0=(65536-50000)/256; TL0=(65536-50000)%256; aa++; } include<reg52.h> #define uint unsigned int #define uchar unsigned char uint temp,aa,wang,qian,bai,shi,ge; sbit dula=P2^6; sbit wela=P2^7; uchar code table[]={ 0x3f,0x06,0x5b,0x4f, 0x66,0x6d,0x7d,0x07, 0x7f,0x6f,0x77,0x7c, 0x39,0x5e,0x79,0x71}; void display( uint wang,uint qian,uint bai,uint shi,uint ge); void delay(uint z); void init(); void main() { init();//初始化子程序 while(1) { if(aa==20) { aa=0; temp++; if(temp==99999) { temp=0; } wang=temp/10000; qian=(temp-wang*10000)/1000; bai=(temp-wang*10000-qian*1000)/100; shi=(temp-wang*10000-qian*1000-bai*100)/10; ge=temp%10; } display(wang,qian, bai,shi,ge); } } void delay(uint z) { uint x,y; for(x=z;x>0;x--) for(y=110;y>0;y--); } void display(uint wang,uint qian,uint bai,uint shi,uint ge) { dula=1; P0=table[wang]; dula=0; P0=0xff; wela=1; P0=0xfe; wela=0; delay(1); dula=1; P0=table[qian]; dula=0; P0=0xff; wela=1; P0=0xfd; wela=0; delay(1); dula=1; P0=table[bai]; dula=0; P0=0xff; wela=1; P0=0xfb; wela=0; delay(1); dula=1; P0=table[shi]; dula=0; P0=0xff; wela=1; P0=0xf7; wela=0; delay(1); dula=1; P0=table[ge]; dula=0; P0=0xff; wela=1; P0=0xef; wela=0; delay(1); } void init() { wela=0; dula=0; temp=0; TMOD=0x01; TH0=(65536-50000)/256; TL0=(65536-50000)%256; EA=1; ET0=1; TR0=1; } void timer0() interrupt 1 { TH0=(65536-50000)/256; TL0=(65536-50000)%256; aa++; } include<reg52.h> #define uint unsigned int #define uchar unsigned char uint temp,aa,wang,qian,bai,shi,ge; sbit dula=P2^6; sbit wela=P2^7; uchar code table[]={ 0x3f,0x06,0x5b,0x4f, 0x66,0x6d,0x7d,0x07, 0x7f,0x6f,0x77,0x7c, 0x39,0x5e,0x79,0x71}; void display( uint wang,uint qian,uint bai,uint shi,uint ge); void delay(uint z); void init(); void main() { init();//初始化子程序 while(1) { if(aa==20) { aa=0; temp++; if(temp==99999) { temp=0; } wang=temp/10000; qian=(temp-wang*10000)/1000; bai=(temp-wang*10000-qian*1000)/100; shi=(temp-wang*10000-qian*1000-bai*100)/10; ge=temp%10; } display(wang,qian, bai,shi,ge); } } void delay(uint z) { uint x,y; for(x=z;x>0;x--) for(y=110;y>0;y--); } void display(uint wang,uint qian,uint bai,uint shi,uint ge) { dula=1; P0=table[wang]; dula=0; P0=0xff; wela=1; P0=0xfe; wela=0; delay(1); dula=1; P0=table[qian]; dula=0; P0=0xff; wela=1; P0=0xfd; wela=0; delay(1); dula=1; P0=table[bai]; dula=0; P0=0xff; wela=1; P0=0xfb; wela=0; delay(1); dula=1; P0=table[shi]; dula=0; P0=0xff; wela=1; P0=0xf7; wela=0; delay(1); dula=1; P0=table[ge]; dula=0; P0=0xff; wela=1; P0=0xef; wela=0; delay(1); } void init() { wela=0; dula=0; temp=0; TMOD=0x01; TH0=(65536-50000)/256; TL0=(65536-50000)%256; EA=1; ET0=1; TR0=1; } void timer0() interrupt 1 { TH0=(65536-50000)/256; TL0=(65536-50000)%256; aa++; }
标签： 矩阵式键盘
上传时间： 2021-12-18
上传用户：2590813506
本源代码是基于STM32F4xx硬件平台设计的贪吃蛇小游戏，主要难点在：随机点产生、贪吃蛇转向、贪吃蛇贪吃点；本部分主要接收产生随机点，产生随机点需要注意两个方面：1、随机点在有效的范围内；2、贪吃点与贪吃蛇不重合。产生随机点主要有两个函数，分别如下：//随机数产生任务void rng_chansheng(void *p_arg){OS_ERR err;while(1){OSSemPend(&RNG_SEM,0,OS_OPT_PEND_BLOCKING,0,&err);zou.x = RNG_Get_RandomRange(0,50)*8 + 40;zou.y = RNG_Get_RandomRange(0,50)*8 + 260;lcd_fangkuan(zou.x,zou.y,zou.x+SHE_FAANGKUAN_SIZE,zou.y+SHE_FAANGKUAN_SIZE);OSTimeDlyHMSM(0,0,0,500,OS_OPT_TIME_HMSM_STRICT,&err); //延时500ms}}//往下方向画一个实心的正方形，代表贪食蛇的一段void lcd_fangkuan(u16 x1,u16 y1,u16 x2 ,u16 y2){u16 i,j;u16 xx,yy;if(((x2 - x1) != SHE_FAANGKUAN_SIZE)||((y2 - y1) != SHE_FAANGKUAN_SIZE))return ;if(x1 > x2) {xx = x1;x1 = x2;x2 = xx;}if(y1 > y2){yy = y1;y1 = y2;y2 = yy;}if((y1 < 260)|| (y2 > 660)||(x1 < 40)||(x2 > 448)){game_yun_error = 1;LCD_ShowString(150,300,500,24,24,"GAME OVER!!");return ;}for(i=x1; i<x2; i++){for(j=y1; j<y2; j++){LCD_DrawPoint(i,j);}}}
上传时间： 2022-08-10
上传用户：
安规方面 X电容与Y电容的设计与计算方法
上传时间： 2013-05-31
上传用户：gjzeus
X电容是指跨于L-N之间的电容器， Y电容是指跨于L-G/N-G之间的电容器。(L=Line, N=Neutral, G=Ground).
标签： 电容
上传时间： 2014-12-23
上传用户：haohao
X电容和Y电容的使用及注意方法
上传时间： 2013-11-22
上传用户：sevenbestfei
介绍X,Y电容的一片通俗易懂的资料
标签： 电容
上传时间： 2013-10-30
上传用户：teddysha
支持X/Y/Z Modem协议的传输文件的通讯程序
上传时间： 2015-01-03
上传用户：xg262122
计算水仙花数（x^3+y^+z^3=x+y+z)3的程序.
上传时间： 2014-01-27
上传用户：WMC_geophy
