做了个摇摇棒，烧坏了14个IO口

donglaile · 发表于 2012-4-30 15:09:55

也不是没事儿做，但就不想做当前的事儿，于是就网上找了资料做了个最简单的摇摇棒，直接电源接LED再加个100欧姆的电阻到STC89C52RC的io口。
做好后，摇了一天没事儿。第二天就只有两个灯还亮了。。。。后悔没有用三极管驱动啊！

jjj206 · 发表于 2012-4-30 15:35:54

嘿嘿，換個芯片加驅動吧。

zhenglu891028 · 发表于 2012-4-30 17:29:41

什么原因啊

looklooktom · 发表于 2012-4-30 18:09:13

100欧太小

little_Monkey · 发表于 2012-4-30 18:23:25

100欧姆太小

goolloo · 发表于 2012-4-30 19:19:57

100r。。。少说330r啊。。。
换成1k的保证你不坏

rei1984 · 发表于 2012-4-30 19:22:06

680 510 330 1k 表示无压力。

100欧姆，你要类似 51 啊。 stc 皮还不够厚。估计atmel的能挺住

syuan163 · 发表于 2012-4-30 21:32:43

电流太大了。

lxa0 · 发表于 2012-4-30 22:17:24

STC89C52RC的驱动能力不够大
没有资料上吹嘘的那么大

xsh2005105326 · 发表于 2012-4-30 22:19:15

一般led压降在2V左右，100欧姆电阻，电流有30mA！

xiaobendan001 · 发表于 2012-4-30 22:37:59

是有点大了，不过你确定是IO坏了？30MA，LED很亮了。我一般用330的，如果要求亮度高，我就用164了，还省IO呢。

marshallemon · 发表于 2012-4-30 22:49:19

学单片机初期，试过用2节电池供电，好像没用限流电阻，竟然无事，现在想想很可怕

maguanglu · 发表于 2012-4-30 22:49:30

呵呵，如果你是用PIC系列的单片机，那么，烧坏的就有可能不是单片机的I/O口了，而是LED了。PIC系列的单片机驱动能力很强哦。

512826028 · 发表于 2012-5-1 16:45:12

楼主应该算一算电流的啊。100偶的电阻，倒是用在拉电流上可以使。
我就做了一个，但是很是失败，但是没有意识到拉电流和灌电流。结果，做出来一个POV LED是拉电流的，一点也不亮，必须在关灯的情况下才可以欣赏。

donglaile · 发表于 2012-5-4 20:39:37

本帖最后由 donglaile 于 2012-5-4 20:43 编辑

对不起大家！
我查了一天，最后把单片机拿下来试了端口没烧，但一插上去就是只有两个灯很亮，其他的只是微弱的亮，开始百思不得其解，后面继续弄，突然想到会不会是焊接的问题，就一个一个的试了看，发现是我用的那个免刮漆包线的问题，有部分短路了，一气之下，全部扯掉，用排线焊了，一切恢复正常。额，，，，，通过这件事儿，让我学到了做事要耐心不要急躁，要怀疑自己，才能找出问题。
开始时，我急躁了，现在想想觉得自己好笨，唉，要慢慢熬啊！

以下是参考别人的程序，自己改了一点，做出的效果和代码：

/**********************************************************
名称：LED摇摇棒64*16像素自适应速度
说明：外中断方式INT0显示；取模方式：从上到下从左到右，纵向8点下高位
**********************************************************/
#include"STC89.h"
#define uchar unsigned char
#define uint unsigned int //宏定义
/*********外部接口定义**********/
#define  data1  P1    //16位数据低8位
#define  data2  P2    //16位数据高8位
#define  KEY P34  //定义画面切换按键

/*********全局变量定义**********/
unsigned long int TimeCount=0;       //定时器单位时间计数
unsigned int    DelayN=80;          //延时临时计数
unsigned int    DelayTime=80;       //每次延时的周期个数

unsigned char KY;    //计数开关
unsigned char disp;    //显示汉字指针
unsigned char pic=0; //按键次数；
unsigned char num=0; //中断次数

uchar code love[] = {    //64*16
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0xFE,0x3F,0x00,0x20,0x00,0x20,0x00,0x20,

0x00,0x20,0x00,0x20,0x00,0x20,0x00,0x20,
0x00,0x00,0x00,0x00,0x00,0x00,0xF8,0x0F,
0x04,0x10,0x02,0x20,0x02,0x20,0x02,0x20,
0x02,0x20,0x04,0x10,0xF8,0x0F,0x00,0x00,

0x00,0x00,0x00,0x00,0xFE,0x07,0x00,0x08,
0x00,0x10,0x00,0x20,0x00,0x20,0x00,0x10,
0x00,0x08,0xFE,0x07,0x00,0x00,0x00,0x00,
0x00,0x00,0xFE,0x3F,0x82,0x20,0x82,0x20,

0x82,0x20,0x82,0x20,0x82,0x20,0x82,0x20,
0x82,0x20,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,/*LOVE*/
};

uchar code loveyou[] = { //64*16
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,

0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x78,0x00,0xFC,0x00,0xFE,0x01,0xFE,0x03,
0xFE,0x07,0xFE,0x0F,0xFE,0x1F,0xFC,0x3F,

0xF8,0x7F,0xFC,0x3F,0xFE,0x1F,0xFE,0x0F,
0xFE,0x07,0xFE,0x03,0xFE,0x01,0xFC,0x00,
0x78,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,

0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,/*心形图案*/
};

uchar code hehe[] = { //64*16
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0xC0,0x01,
0x40,0x01,0xC0,0x01,0x00,0x00,0x00,0x00,

0xF0,0x0F,0x08,0x10,0x04,0x20,0x00,0x00,
0x00,0x00,0xF0,0x3F,0x08,0x00,0x04,0x00,
0x04,0x00,0x04,0x00,0x08,0x00,0xF0,0x3F,
0x00,0x00,0x00,0x00,0x00,0x20,0x00,0x20,

0x00,0x20,0x00,0x20,0x00,0x20,0x00,0x00,
0x00,0x00,0xF0,0x3F,0x08,0x00,0x04,0x00,
0x04,0x00,0x04,0x00,0x08,0x00,0xF0,0x3F,
0x00,0x00,0x00,0x00,0x04,0x20,0x08,0x10,

0xF0,0x0F,0x00,0x00,0x00,0x00,0xC0,0x01,
0x40,0x01,0xC0,0x01,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,/*呵呵o(∩_∩)o图案*/
};

unsigned char code hanzi[] = {    //64*16
//-- 欢 --
   0x04,0x10,0x34,0x08,0xC4,0x06,0x04,0x01,
   0xC4,0x82,0x3C,0x8C,0x20,0x40,0x10,0x30,
   0x0F,0x0C,0xE8,0x03,0x08,0x0C,0x08,0x10,
   0x28,0x60,0x18,0xC0,0x00,0x40,0x00,0x00,
//-- 迎 --
   0x40,0x00,0x42,0x40,0x44,0x20,0xC8,0x1F,
   0x00,0x20,0xFC,0x47,0x04,0x42,0x02,0x41,
   0x82,0x40,0xFC,0x7F,0x04,0x40,0x04,0x42,
   0x04,0x44,0xFE,0x63,0x04,0x20,0x00,0x00,
//-- 使 --
   0x40,0x00,0x20,0x00,0xF8,0xFF,0x07,0x00,
   0x04,0x80,0xF4,0x43,0x14,0x45,0x14,0x29,
   0x14,0x19,0xFF,0x17,0x14,0x21,0x14,0x21,
   0x14,0x41,0xF6,0xC3,0x04,0x40,0x00,0x00,
//-- 用 --
   0x00,0x80,0x00,0x60,0xFE,0x1F,0x22,0x02,
   0x22,0x02,0x22,0x02,0x22,0x02,0xFE,0x7F,
   0x22,0x02,0x22,0x02,0x22,0x42,0x22,0x82,
   0xFF,0x7F,0x02,0x00,0x00,0x00,0x00,0x00,
//-- 神 --
   0x08,0x01,0x88,0x00,0x49,0x00,0xEE,0xFF,
   0x58,0x00,0x88,0x00,0x00,0x00,0xF8,0x1F,
   0x88,0x08,0x88,0x08,0xFF,0xFF,0x88,0x08,
   0x88,0x08,0xFC,0x1F,0x08,0x00,0x00,0x00,
//-- 奇 --
   0x40,0x00,0x40,0x00,0x44,0x00,0x44,0x3E,
   0x64,0x12,0x54,0x12,0x4C,0x12,0x47,0x12,
   0x4C,0x3F,0x54,0x42,0x74,0x80,0xC6,0x7F,
   0x44,0x00,0x60,0x00,0x40,0x00,0x00,0x00,
//-- 魔 --
   0x00,0x40,0x00,0x30,0xFE,0x8F,0x4A,0x80,
   0xAA,0x5F,0x9A,0x4A,0xFE,0x2A,0xAA,0x1A,
   0xCB,0x0F,0xAA,0x7A,0xFE,0x8A,0x9A,0xAA,
   0xAA,0x8F,0x6B,0x80,0x22,0xE0,0x00,0x00,
//-- 幻 --
   0x80,0x20,0xC0,0x30,0xA0,0x28,0x98,0x24,
   0x87,0x22,0x80,0x21,0xC4,0x30,0x04,0x60,
   0x04,0x00,0x04,0x20,0x04,0x40,0x04,0x80,
   0x04,0x40,0xFE,0x3F,0x04,0x00,0x00,0x00,
//-- 摇 --
   0x10,0x02,0x10,0x42,0x10,0x81,0xFF,0x7F,
   0x90,0x04,0x54,0x05,0xCC,0xF4,0xB4,0x44,
   0x84,0x44,0xBC,0x7F,0x82,0x44,0xA2,0x44,
   0x9B,0xF4,0x82,0x06,0x00,0x04,0x00,0x00,
//-- 摇 --
   0x10,0x02,0x10,0x42,0x10,0x81,0xFF,0x7F,
   0x90,0x04,0x54,0x05,0xCC,0xF4,0xB4,0x44,
   0x84,0x44,0xBC,0x7F,0x82,0x44,0xA2,0x44,
   0x9B,0xF4,0x82,0x06,0x00,0x04,0x00,0x00,
//-- 棒 --
   0x10,0x04,0x10,0x03,0xD0,0x00,0xFF,0xFF,
   0x90,0x00,0x54,0x05,0x44,0x12,0xD4,0x15,
   0x74,0x14,0x5F,0xFF,0xD4,0x14,0x54,0x15,
   0x56,0x12,0x44,0x06,0x40,0x02,0x00,0x00,
//-- ！ --
   0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
   0x00,0x00,0x00,0x00,0x7C,0x10,0xFE,0x3B,
   0xFE,0x3B,0x7C,0x10,0x00,0x00,0x00,0x00,
   0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00
};

unsigned char code GB_16[] =       //64*16数据表
{
//"欢",
   0x04,0x10,0x34,0x08,0xC4,0x06,0x04,0x01,
   0xC4,0x82,0x3C,0x8C,0x20,0x40,0x10,0x30,
   0x0F,0x0C,0xE8,0x03,0x08,0x0C,0x08,0x10,
   0x28,0x60,0x18,0xC0,0x00,0x40,0x00,0x00,

//"迎",
   0x40,0x00,0x42,0x40,0x44,0x20,0xC8,0x1F,
   0x00,0x20,0xFC,0x47,0x04,0x42,0x02,0x41,
   0x82,0x40,0xFC,0x7F,0x04,0x40,0x04,0x42,
   0x04,0x44,0xFE,0x63,0x04,0x20,0x00,0x00,

//"您",
   0x40,0x40,0x20,0x30,0x10,0x00,0xFC,0x77,
   0x23,0x80,0x10,0x81,0x8C,0x88,0x67,0x92,
   0x04,0xB4,0xF4,0x83,0x04,0x80,0x44,0xE0,
   0x94,0x00,0x8C,0x11,0x00,0x60,0x00,0x00,

//"！",
   0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
   0x00,0x00,0x00,0x00,0x7C,0x10,0xFE,0x3B,
   0xFE,0x3B,0x7C,0x10,0x00,0x00,0x00,0x00,
   0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
//"欢",
   0x04,0x10,0x34,0x08,0xC4,0x06,0x04,0x01,
   0xC4,0x82,0x3C,0x8C,0x20,0x40,0x10,0x30,
   0x0F,0x0C,0xE8,0x03,0x08,0x0C,0x08,0x10,
   0x28,0x60,0x18,0xC0,0x00,0x40,0x00,0x00,

//"迎",
   0x40,0x00,0x42,0x40,0x44,0x20,0xC8,0x1F,
   0x00,0x20,0xFC,0x47,0x04,0x42,0x02,0x41,
   0x82,0x40,0xFC,0x7F,0x04,0x40,0x04,0x42,
   0x04,0x44,0xFE,0x63,0x04,0x20,0x00,0x00,

//"您",
   0x40,0x40,0x20,0x30,0x10,0x00,0xFC,0x77,
   0x23,0x80,0x10,0x81,0x8C,0x88,0x67,0x92,
   0x04,0xB4,0xF4,0x83,0x04,0x80,0x44,0xE0,
   0x94,0x00,0x8C,0x11,0x00,0x60,0x00,0x00,

//"！",
   0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
   0x00,0x00,0x00,0x00,0x7C,0x10,0xFE,0x3B,
   0xFE,0x3B,0x7C,0x10,0x00,0x00,0x00,0x00,
   0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
//"你",
   0x40,0x00,0x20,0x00,0xF8,0xFF,0x07,0x00,
   0x40,0x00,0x20,0x08,0x18,0x04,0x0F,0x43,
   0x08,0x80,0xC8,0x7F,0x08,0x00,0x08,0x01,
   0x28,0x06,0x18,0x0C,0x00,0x00,0x00,0x00,

//"好",
   0x10,0x40,0x10,0x22,0xF0,0x15,0x1F,0x08,
   0x10,0x14,0xF0,0x63,0x80,0x00,0x82,0x00,
   0x82,0x40,0x82,0x80,0xE2,0x7F,0x92,0x00,
   0x8A,0x00,0xC6,0x00,0x80,0x00,0x00,0x00,

//"吗",
   0x00,0x00,0xFC,0x1F,0x04,0x08,0x04,0x08,
   0xFE,0x1F,0x04,0x08,0x02,0x08,0xFA,0x09,
   0x02,0x09,0x02,0x09,0x02,0x0D,0xFF,0x49,
   0x02,0x81,0x80,0x7F,0x00,0x01,0x00,0x00,

//"？",
   0x00,0x00,0x00,0x00,0x30,0x00,0x38,0x00,
   0x28,0x00,0x04,0x00,0x04,0x20,0x04,0x70,
   0x84,0x73,0x84,0x21,0xC4,0x00,0x4C,0x00,
   0x78,0x00,0x30,0x00,0x00,0x00,0x00,0x00
};

// 汉字表：

unsigned char code GB_161[] =       // 数据表
{
//"欢",
   0x04,0x10,0x34,0x08,0xC4,0x06,0x04,0x01,
   0xC4,0x82,0x3C,0x8C,0x20,0x40,0x10,0x30,
   0x0F,0x0C,0xE8,0x03,0x08,0x0C,0x08,0x10,
   0x28,0x60,0x18,0xC0,0x00,0x40,0x00,0x00,

//"迎",
   0x40,0x00,0x42,0x40,0x44,0x20,0xC8,0x1F,
   0x00,0x20,0xFC,0x47,0x04,0x42,0x02,0x41,
   0x82,0x40,0xFC,0x7F,0x04,0x40,0x04,0x42,
   0x04,0x44,0xFE,0x63,0x04,0x20,0x00,0x00,

//"您",
   0x40,0x40,0x20,0x30,0x10,0x00,0xFC,0x77,
   0x23,0x80,0x10,0x81,0x8C,0x88,0x67,0x92,
   0x04,0xB4,0xF4,0x83,0x04,0x80,0x44,0xE0,
   0x94,0x00,0x8C,0x11,0x00,0x60,0x00,0x00,

//"！",
   0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
   0x00,0x00,0x00,0x00,0x7C,0x10,0xFE,0x3B,
   0xFE,0x3B,0x7C,0x10,0x00,0x00,0x00,0x00,
   0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00
};
/*********子程序声明**********/
/*****函数声明*****/
void SysInit(void);

void display1(void);
void display2(void);
void display3(void);
void display4(void);
void DelayUs(uint N);
void delay(unsigned char n);
void display_lzd(void);

void display(void);
void display_pic(unsigned char code *pic);       //显示16*16点阵图

/*****主函数*****/
void main(void)
{
SysInit();
display_pic(GB_16);
while(1)    //主程序中只检测按键
{
if(KEY==0)    //画面切换键按下
{
   DelayUs(5000);       //按键去抖处理
   if(KEY==0)
   {
   pic++;
   if(pic >= 5)
         {pic = 0;}
   while(KEY == 0);//等待按键释放
   }
      }
   };
}
/*****外部中断0 服务程序*****/
void intersvr0(void) interrupt 0 using 1    //使用外部中断0
{
KY=~KY;
if(KY==0)
{
    num++;    //计算中断次数
    }
if(TimeCount<800) return; //中断去抖4500
data1=0xff;             //清显示
data2=0xff;
DelayTime=TimeCount/200;//设定每次延时时钟周期数=总时间/（16列*2组*1个字）640
TimeCount=0;                      //延时周期计数清零
delay(70);             //延时20列

//display_pic(GB_16); //显示一个16*16的字或图片
display();
//display_lzd();
data1=0xff;
data2=0xff;
while(P32==1);//每个摇动来回水银开关会在摆幅两端分别产生下降沿中断，
            //只提取其中一次（从左向右摇才显示），根据自己的硬件结构调整是等于0或1
}
/***定时器0 中断服务程序****/
void timer0(void) interrupt 1 using 2 //定时器1中断子程序
{
TimeCount++;
if (DelayN!=0)
         DelayN--;
}
void SysInit(void)
{
IT0=1;
EX0=1; //下降沿中断

IP=0x02;    //设置中断优先级，T0高优先级
TMOD=0x02;    //定时器0方式2，8位重装载
TH0=0x80;    //设定定时器初值
TL0=0x80;
ET0=1;       //定时器0中断允许
TR0=1;       //启动定时器0，开始计时

EA=1;    //开中断
KY=0;
}

/************************************************************/

/*****n(us)延时子程序*****/
void DelayUs(uint N)
{
uint x;
for(x=0; x<=N;x++);
}
/*********自适应延时子程序**********/
void delay(unsigned char n)
{
for(;n>0;n--)
{
   DelayN=DelayTime;
   while (DelayN);
}
}

/*********显示内容选择子程序**********/
void display(void)
{
switch(pic)    //选择画面
{
case 0:{display1();}break;
case 1:{display2();}break;
case 2:{display3();}break;
case 3:{display4();}break;
case 4:{display_lzd();}break;
default:{display1();}
  }
}
/*********图片显示子程序**********/
void display_pic(unsigned char code *pic)       //显示16*16点阵图
{    unsigned char i;
      for(i=0;i<16;i++)
{
     P1=~pic[i*2];
     P2=~pic[i*2+1];
      delay(1);
}
}
/*****显示（汉字）*****/
void display_lzd(void)
{
   uchar i;
   if(num>10){disp++;num=0;}  //12个汉字分为3次显示完（每次显示4个），每中断10次切换
   if(disp>2)disp=0;

   for(i=0;i<64;i++)
   {
      P1=~GB_16[disp*128+i*2];
      P2=~GB_16[disp*128+i*2+1];
   delay(1);
   }
}

/*****显示子程序1（汉字）*****/
void display1(void)
{
   uchar i;
   if(num>10)
   {disp++;num=0;}    //12个汉字分为3次显示完（每次显示4个），每中断10次切换
   if(disp>2)
   {disp=0;}
   for(i=0;i<64;i++)
   {
      P1=~hanzi[disp*128+i*2];
      P2=~hanzi[disp*128+i*2+1];
   delay(1);
   }
}
/*****显示子程序2（LOVE）*****/
void display2(void)
{
   uchar i;
   for(i=0;i<64;i++)
   {
      P1=~love[i*2];
      P2=~love[i*2+1];
   delay(1);
   }
}
/*****显示子程序3（心形图案）*****/
void display3(void)
{
   uchar i;
   for(i=0;i<64;i++)
   {
      P1=~loveyou[i*2];
      P2=~loveyou[i*2+1];
   delay(1);
   }
}
/*****显示子程序4（呵呵o(∩_∩)o图案）*****/
void display4(void)
{
   uchar i;
   for(i=0;i<64;i++)
   {
      P1=~hehe[i*2];
      P2=~hehe[i*2+1];
   delay(1);
   }
}
效果图：

xo37 · 发表于 2012-5-5 07:43:23

很不错……

一般的51说是输出50mA，实际的话即使对半也是25mA，LED一般的电流是15mA左右

littlepig · 发表于 2012-5-5 09:40:38

很漂亮哦

wye11083 · 发表于 2012-5-5 10:04:00

不要相信什么所谓的免刮漆包线，第一，线太细，0.05mm线径，电阻大得惊人，用于微安级超低频信号还行，接个LED都有可能烧坏；第二，真的免刮？不是的，烙铁温度不够是烫不掉漆的。我现在就用普通线，最细我用0.15mm，再细就没有实际价值了，然后烙铁开325度就够了，把漆包线头往一坨锡里一插，5-10秒之后漆基本就全掉了，剩下的就是晶莹的锡包铜了。焊接时一般我开300，开300锡氧化太快，但是开275不容易焊接，基本上是一放到器件上就没温度了。

598439837 · 发表于 2013-1-27 11:52:42

我是stc89c52rc想做个，求助啊？

做了个摇摇棒，烧坏了14个IO口

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阿莫论坛20周年了！感谢大家的支持与爱护！！

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