苏嵌学习日志6

学习日志

姓名：唐小玲 日期：2018.7.16

 

今日学习任务	单片机基本原理与仿真
今日任务完成情况   （详细说明本日任务是否按计划完成，开发的代码量）	单片机最小系统 LED灯，流水灯 蜂鸣器 行列式键盘
今日开发中出现的问题汇总	个人单片机这一部分知识点学的不好，掌握程度不够，编写程序的时候有很多问题，需要重新多加练习编写代码。
今日未解决问题	依旧不会独立编写难度稍高的代码。
今日开发收获	1.单片机 单芯片微型计算机 2.led全亮 #include<reg51.h>   #define LED P1   void main() { P1 = 0; while(1); } 3.亮一个 #include<reg51.h> #define LED P1   sbit LED1 = P1^1;   void main() { LED1 = 0;   while(1); } 4.隔一个亮 #include<reg51.h> #define LED P1   sbit LED1 = P1^1;   void main() { P1 = 0xaa;   while(1); } 5.两个灯交替闪烁 #include<reg51.h> #define LED P1   sbit LED1 = P1^0; sbit LED2 = P1^1;   void delay() { int x = 100, i;   while(x--) { for(i=0; i<60;i++); } }   void main() { LED1 = 0;   while(1) { LED1 = 0; delay(); LED1 = 1; LED2 = 0; delay(); LED2 = 1; }   } 6.流水灯 #include<reg51.h> #define LED P1   void delay() { int x = 100, i;   while(x--) { for(i=0; i<60; i++); } }   void main() { int i; while(1) { for(i = 0; i < 8; i++) { P1 = ~(1 << i); delay(); } } } 7.依次点亮每一个灯，不熄灭已点亮的灯，直至全部点亮再熄灭 #include<reg51.h> #define LED P1   void delay() { int x = 100, i;   while(x--) { for(i=0; i<60; i++); } }   void main() { int i;   P1 = 0xff; delay();   while(1) { for(i = 0; i < 9; i++) { //P1 &= ~(1 << i); P1 <<= i; delay(); } } } 8.蜂鸣器响 #include<reg51.h> sbit Beep = P2^3;   void main() { Beep = 0; } 9.改变音调 #include<reg51.h>   sbit Beep = P2^3;   void delay(x) { int i; while(x--) { for(i=0; i<10; i++); } } void main() { while(1) { Beep = 0; delay(15);//?μ??′ó￡?ò?μ÷???? Beep = 1; delay(1); } } 10.按键(按一下灯亮然后熄灭) #include<reg51.h>   sbit s2 = P3^0; sbit s3 = P3^1; sbit s4 = P3^2; sbit s5 = P3^3;   sbit led1 = P1^0; sbit led2 = P1^1; sbit led3 = P1^2; sbit led4 = P1^3; void delay(x) { int i; while(x--) { for(i=0; i<10; i++); } } int main() { while(1) { P1 = 0xff; if(s2 == 0) { led1 = 0; } else if(s3 == 0) { led2 = 0; } else if(s4 == 0) { led3 = 0; } else if(s5 == 0) { led4 = 0; } }   return 0; } 11.矩阵键盘 #include <reg51.h>   #define LED   P0 sbit LED1 = P0^0; sbit LED2 = P0^1; sbit LED3 = P0^2; sbit LED4 = P0^3;   int key;   int main() { while (1) { key = 0; LED = 0xff; P3 = 0xf0;//判断哪一列被按下 if(P3 != 0xf0) { switch(P3) { case 0xe0: key = 0; break; case 0xd0: key = 1; break; case 0xb0: key = 2; break; case 0x70: key = 3; break; } P3 = 0x0f;//判断哪一行被按下 switch(P3) { case 0x0e: key += 1; break; case 0x0d: key += 5; break; case 0x0b: key += 9; break; case 0x07: key += 13; break; } }   switch (key) { case 1: LED1 = 0; break; case 2: LED2 = 0; break; case 3: LED3 = 0; break; case 4: LED4 = 0; break; } }   return 0; }
自我评价 (是否按开发规范完成既定任务，需要改进的地方，与他人合作效果等)	一些简单的练习能够做出，但是有一些小知识点遗忘了，不够熟练，需要多多实践练习！
作业	1.通过矩阵按键控制蜂鸣器发出不同音调的声音 #include <reg51.h>   sbit Beep = P2^3;   int key;   void delay(int x) {     int  i;       while(x --)     {         for(i = 0; i < 60; i ++);     } }   int main() {     while (1)     {         key = 0;         P3 = 0xf0;//判断哪一列被按下         if(P3 != 0xf0)         {             switch(P3)             {                 case 0xe0:    key = 0;    break;                 case 0xd0:    key = 1;    break;                 case 0xb0:    key = 2;    break;                 case 0x70:    key = 3;    break;             }             P3 = 0x0f;//判断哪一行被按下             switch(P3)             {                 case 0x0e:    key += 1;    break;                 case 0x0d:    key += 5;    break;                 case 0x0b:    key += 9;    break;                 case 0x07:    key += 13;    break;             }         }           switch (key)         {             case 1:                 Beep = 0;                 delay(5);                 Beep = 1;                 delay(1);                 break;             case 2:                 Beep = 0;                 delay(10);                 Beep = 1;                 delay(2);                 break;             case 3:                 Beep = 0;                 delay(30);                 Beep = 1;                 delay(4);                 break;             case 4:                 Beep = 0;                 delay(4);                 Beep = 1;                 delay(5);                 break;             case 5:                 Beep = 0;                 delay(250);                 Beep = 1;                 delay(7);                 break;             case 6:                 Beep = 0;                 delay(30);                 Beep = 1;                 delay(9);                 break;             case 7:                 Beep = 0;                 delay(70);                 Beep = 1;                 delay(11);                 break;             case 8:                 Beep = 0;                 delay(80);                 Beep = 1;                 delay(14);                 break;             case 9:                 Beep = 0;                 delay(90);                 Beep = 1;                 delay(16);                 break;             case 10:                 Beep = 0;                 delay(100);                 Beep = 1;                 delay(15);                 break;             case 11:                 Beep = 0;                 delay(110);                 Beep = 1;                 delay(17);                 break;             case 12:                 Beep = 0;                 delay(120);                 Beep = 1;                 delay(19);                 break;             case 13:                 Beep = 0;                 delay(130);                 Beep = 1;                 delay(21);                 break;             case 14:                 Beep = 0;                 delay(140);                 Beep = 1;                 delay(24);                 break;             case 15:                 Beep = 0;                 delay(150);                 Beep = 1;                 delay(28);                 break;             case 16:                 Beep = 0;                 delay(160);                 Beep = 1;                 delay(26);                 break;         }     }     return 0; }