Question

51单片机1602显示不出来，那里出问题了？

#include <reg52.h>#define LCD1602_DB P0sbit LCD1602_RS = P1^0;sbit LCD1602_RW = P1^1;sbit LCD1602_E = P1^5;void InitLcd1602();void LcdShowStr(unsigned char x, unsigned char y, unsigned char *str);void main(){ unsigned char str[] = "guoFei"; InitLcd1602(); // x×ø±ê y×ø±ê ×Ö·û´®Ö¸ÕëÂë Ö¸Õë±äÁ¿ LcdShowStr(2, 0, str); LcdShowStr(0, 1, "1234"); EA=1; ET0=1; TR0=1; while(1); }void LcdWaitReady() //µÈ´ý ÅжÏÊÇ·ñæ{ unsigned char sta; LCD1602_DB = 0xFF; LCD1602_RS = 0; LCD1602_RW = 1; do { LCD1602_E = 1; sta = LCD1602_DB; LCD1602_E = 0; }while(sta & 0x80);}void LcdWriteCmd(unsigned char cmd) //дָÁî{ LcdWaitReady(); LCD1602_RS = 0; LCD1602_RW = 0; LCD1602_DB = cmd; LCD1602_E = 1; LCD1602_E = 0;}void LcdWriteDat(unsigned char dat) //дÊý¾Ý{ LcdWaitReady(); LCD1602_RS = 1; LCD1602_RW = 0; LCD1602_DB = dat; LCD1602_E = 1; LCD1602_E = 0;}void LcdSetCursor(unsigned char x, unsigned char y){ unsigned char addr; if(y == 0) addr = 0x00 + x; else addr = 0x40 + x; LcdWriteCmd(addr | 0x80);}void LcdShowStr(unsigned char x, unsigned char y, unsigned char *str){ LcdSetCursor(x, y); while(*str != '\0') { LcdWriteDat(*str++); }}void InitLcd1602(){ ///³õʼ»¯ LcdWriteCmd(0x38); //ÉèÖÃ16¡Á2ÏÔʾ £¬ 5¡Á7µãÕó £¬8λÊý¾Ý½Ó¿Ú LcdWriteCmd(0x0C); LcdWriteCmd(0x06); LcdWriteCmd(0x01); //Çå0}

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Answer 1

这种现象我遇过 1602显示太亮 无法看清 在V0与接地接个10K电位器就好了 还有的杜邦线没插紧或插错 代码没问题

追问

您好，对于您刚才的回答的，我不太理解   您看一下我的  接线  告诉我一下，谢谢

追答

你V0直接接地吗

V0不要直接负极 加个电位器或者串个3K电阻

这是我直接V0接地 变这样的

没电位器 直接接了一个发光二极管 就好了

自己做的 比较辣鸡 不要见笑

那个叫可调电阻器 不叫电位器 搞错了 纠正下