LCD1602不能正常显示

HSIR08

输入输入2、4显示的是6；输入3、5显示的是7；输入B、D显示F；输入C、E显示的是G
# include "sys.h"
# include "usart.h"
# include "delay.h"
# include "RUN.h"
typedef volatile unsigned char  uint8; //??·???8??±???
typedef volatile unsigned int   uint16;//??·???16??????±???
typedef volatile unsigned long  uint32;//??·???32???¤????±???
void LCD_Init(void);//?ù?÷
void LCD_FBUF(void);//?ù?÷
void LCD1602_Init(void);//?ù?÷
void LCD_WriteCom(unsigned char Com);//?ù?÷
void LCD_WriteData(unsigned char Date);//?ù?÷

//?÷????
int main(void)
{
Stm32_Clock_Init(9);
delay_init(72);
LCD_Init() ;   //GPIO??????????????
  LCD1602_Init();//LCD??????
while(1)
  {
LCD_WriteCom  (0x80+00);   //??????
  LCD_WriteData (0x36);
 }
}

/*
  LCDRS=0;       //RS=0,6
     LCDRW=0;       //RW=1,5
     LCDEN=0;       //EN=1,4
DATA_OUT=0X95; //????????1
   LCD_WriteCom  (0x80+00);   //??????
   LCD_WriteData ('A');    //??????
LCD_WriteData (0xA3);
LCD_WriteCom  (0x80+2);   //??????
   LCD_WriteData ('B');    //??????
LCD_WriteData (0xA3);
LCD_WriteCom  (0x80+40);   //??????
   LCD_WriteData ('C');    //??????
LCD_WriteData (0xA3);
LCD_WriteCom  (0x80+40);   //??????
   LCD_WriteData ('A');    //??????
LCD_WriteData ('B');    //??????
LCD_WriteData ('C');    //??????
LCD_WriteData ('D');    //??????
LCD_WriteData ('E');    //??????
LCD_WriteData ('F');    //??????
LCD_WriteData ('G');    //??????
LCD_WriteData ('H');    //??????
LCD_WriteData ('I');    //??????
LCD_WriteData ('G');    //??????
LCD_WriteData ('K');    //??????
LCD_WriteData ('L');    //??????
LCD_WriteData ('M');    //??????
LCD_WriteData ('N');    //??????
   LCD_WriteData ('O');    //??????
LCD_WriteCom  (0x80+00);   //??????
LCD_WriteData ('1');    //??????
LCD_WriteData ('2');    //??????
LCD_WriteData ('3');    //??????
LCD_WriteData ('4');    //??????
LCD_WriteData ('5');    //??????
LCD_WriteData ('6');    //??????
LCD_WriteData ('7');    //??????
LCD_WriteData ('8');    //??????
LCD_WriteData ('9');    //??????
LCD_WriteData ('1');    //??????
LCD_WriteData ('2');    //??????
LCD_WriteData ('3');    //??????
LCD_WriteData ('4');    //??????
LCD_WriteData ('5');    //??????
LCD_WriteData ('6');    //??????
LCD_WriteData ('7');    //??????*/
 



# include "run.h"
# include "delay.h"
//??????PB4??PB5??PB6·?±???EN??RW??RS
//8????????·?±?????
//lcd IO??????
void LCD_Init(void)
{
RCC->APB2ENR|=1<<3;//????PORTB?±??
  RCC->APB2ENR|=1<<4;//????PORTC?±??
JTAG_Set(SWD_ENABLE);//??±?JTAG????SWD
  GPIOB->CRL&=0XF000FFFF;//PB4??PB5??PB6??×÷????????????
GPIOB->CRL|=0X03330000;//PB4??PB5??PB6???©????????50Hz
GPIOB->ODR=0X0070;
GPIOC->CRL&=0X00000000;//??PC0~PC7??×÷????????????
GPIOC->CRL|=0X33333333;//PC0~PC7???©????????50Hz
GPIOC->ODR=0X00FF;
}
//?????ò
void LCD_FBUF(void)
{
  LCDRS=0;       //RS=0,6
  LCDRW=1;       //RW=1,5
  LCDEN=1;       //EN=1,4
delay_ms(5); 
  DATA_OUT=0XFF; //????????1
  while((DATA_OUT & 0x80) == 0x80);    //??????????D7 PC9??·????±??
  LCDRW=1;       //RW=1
  LCDEN=0;       //EN=0
}

//LCD??????×?????
void LCD_WriteCom(unsigned char Com)
{
//LCD_FBUF();                 //?ì????·?????×???
  LCDRS=0;                    //RS=0
  LCDRW=0;                    //RW=0
  LCDEN=0;                   //EN=0
  delay_ms(2); 
DATA_OUT = Com;             //????????
  delay_ms(2);               //???±1ms
  LCDEN=1;                    //EN=1
  delay_ms(2);                //???±1ms
  LCDEN=0;                    //EN=0
delay_ms(2);
}

//LCD??????×?????
void LCD_WriteData(unsigned char Date)
{
//LCD_FBUF();                     //?ì????·?????×???
  LCDRS=1;                        //RS=1
  LCDRW=0;                        //RW=0
  LCDEN=0;                        //EN=0
  delay_ms(2); 
DATA_OUT = Date;                //????????
  delay_ms(2);                    //???±4ms
  LCDEN=1;                        //EN=1
  delay_ms(2);                    //???±4ms
  LCDEN=0;                        //EN=0
delay_ms(2);
}

//LCD????????????????
void LCD1602_Init(void)
{
delay_ms(2);  
  LCD_WriteCom(0X38);           //?è??16*2??????5*7???ó??8??????????
  delay_ms(2);                                     //???±200us
  LCD_WriteCom(0X38);           //?è??16*2??????5*7???ó??8??????????
  delay_ms(2);                                   //???±200us
  LCD_WriteCom(0X0C);           //?è???ò??????
  delay_ms(2);                                     //???±200us
  LCD_WriteCom(0X06);           //???ò????????×?·??ó??1
  delay_ms(2);                                    //???±200us
  LCD_WriteCom(0X01);           //????????
  delay_ms(2);                                     //???±200us
}

HSIR08

OK已经解决

xuande

这种显示，中间过程太多，不好说。

先对照硬件，看每个字符的编码对不对；

然后看程序，是否输出了对应的编码。

先编个简单的程序，把硬件和编码固定下来。

HSIR08

回复【2楼】xuande:
--其实就是一个主函数去显示了一个字符，有的显示没有问题，有的却显示错误，-------------------------------
int main(void)
{
Stm32_Clock_Init(9);
delay_init(72);
LCD_Init() ;   //GPIO初始化
  LCD1602_Init();//LCD初始化
while(1)
  {
LCD_WriteCom  (0x80+00);   //写指令
  LCD_WriteData (0x36);//写数据
 }
}

HSIR08

回复【2楼】xuande:
---------------------------------
要加上拉电阻么？

黑夜之狼

可以参考我的帖子
http://www.openedv.com/posts/list/46874.htm