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標題: stm32f103單片機+LCD12864一直藍屏,無任何顯示改如何調試? [打印本頁]

作者: hehe、 時間: 2023-1-25 20:13
標題: stm32f103單片機+LCD12864一直藍屏,無任何顯示改如何調試?

.h

#ifndef _LCD12864_H_
#define _LCD12864_H_

#include "stm32f10x.h"
#include "sys.h"

typedef struct{

      u8 c51 ;
      u8 num ;
      u8 *dat;

}LCD_InitTypeDef;

#define CS  GPIO_Pin_1 //RS
#define SID GPIO_Pin_2 //RW
#define CLK GPIO_Pin_3 //EN
#define PSB GPIO_Pin_4 //串并選擇 H并 L串
#define CMD_PROT GPIOA

#define CS_HIGH GPIO_SetBits(CMD_PROT,CS)
#define CS_LOW GPIO_ResetBits(CMD_PROT,CS)

#define SID_HIGH GPIO_SetBits(CMD_PROT,SID)
#define SID_LOW GPIO_ResetBits(CMD_PROT,SID)

#define CLK_HIGH GPIO_SetBits(CMD_PROT,CLK)
#define CLK_LOW GPIO_ResetBits(CMD_PROT,CLK)

#define PSB_HIGH GPIO_SetBits (CMD_PROT,PSB)
#define PSB_LOW GPIO_ResetBits(CMD_PROT,PSB)

#define CMD 0XF8
#define DAT 0XFA

void LCD12864_UserConfig(void);
void LCD12864_Write_Init(void);
void LCD12864_Opne(void);
void LCD12864_Shut(void);
void LCD12864_Write_Cmd_Data(u8 cmd,u8 data);
void LCD12864_Write_Word(LCD_InitTypeDef LCD_InitStructure);
void LCD12864_Write_Number(u8 c51,u16 num);

#endif

.c

#include "stm32f10x.h"
#include "Delay.h"
#include "LCD12864.h"

void LCD12864_UserConfig(void){

      GPIO_InitTypeDef GPIO_InitStructure;

      RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA,ENABLE);

      GPIO_InitStructure.GPIO_Pin = CS|SID|CLK|PSB; //CMD
      GPIO_InitStructure.GPIO_Speed = GPIO_Speed_10MHz;
      GPIO_InitStructure.GPIO_Mode  = GPIO_Mode_Out_PP;
      GPIO_Init(CMD_PROT,&GPIO_InitStructure);
}
void LCD12864_Write_Byte(u8 data){

      CS_HIGH;
      for(u8 i=0;i<8;i++){ // 1000 0000 << 0 >>

            ((data<<i)&0x80) ? SID_HIGH:SID_LOW;

            CLK_LOW;
            CLK_HIGH;
      }
      CS_LOW;
}
void LCD12864_Write_Cmd_Data(u8 cmd,u8 data){

      LCD12864_Write_Byte(cmd);
      LCD12864_Write_Byte(data&0xf0);//HIGH 0X38 1000 0000 & 1111 0000 1000 <<4
      LCD12864_Write_Byte((data<<4)&0xf0);
      Delay_ms(2);
}
void LCD12864_Write_Init(void){

      PSB_LOW;
      LCD12864_Write_Cmd_Data(CMD,0x30);
      LCD12864_Write_Cmd_Data(CMD,0x06);
      LCD12864_Write_Cmd_Data(CMD,0x0C);
      LCD12864_Write_Cmd_Data(CMD,0x01); //清屏
      LCD12864_Write_Cmd_Data(CMD,0x80);
}
void LCD12864_Opne(void){

      LCD12864_Write_Cmd_Data(CMD,0x0C);
}
void LCD12864_Shut(void){

      LCD12864_Write_Cmd_Data(CMD,0x08);
}
void LCD12864_Write_Word(LCD_InitTypeDef LCD_InitStructure){

      LCD12864_Write_Cmd_Data(CMD,LCD_InitStructure.c51);

      for(u8 i=0;i<LCD_InitStructure.num;i++){

            LCD12864_Write_Cmd_Data(DAT,*LCD_InitStructure.dat++);

            Delay_ms(200);
      }
}

void LCD12864_Write_Number(u8 c51,u16 num){

      const u8 number[] = {"0123456789"};

      LCD12864_Write_Cmd_Data(CMD,c51);

      LCD12864_Write_Cmd_Data(DAT,number[num/1000]); //1314 1
      LCD12864_Write_Cmd_Data(DAT,number[num%1000/100]);//1314 3
      LCD12864_Write_Cmd_Data(DAT,number[num%100/10]);  //1314 1
      LCD12864_Write_Cmd_Data(DAT,number[num%100%10]);  //1314 4
}

main

#include "stm32f10x.h"
#include "LCD12864.h"
#include "Delay.h"

LCD_InitTypeDef LCD_InitStructure;

int main(void){

      LCD12864_UserConfig();
LCD12864_Write_Init();

      LCD12864_Opne();

      LCD_InitStructure.c51 = 0X80; //0X80-0X8F 16 8
      LCD_InitStructure.num = 16;
      LCD_InitStructure.dat = (u8*)&"勝日尋芳泗水濱，";
      LCD12864_Write_Word(LCD_InitStructure);

      LCD_InitStructure.c51 = 0X90; //0X90-0X9F 16 8
      LCD_InitStructure.num = 16;
      LCD_InitStructure.dat = (u8*)&"無邊光景一時新。";
      LCD12864_Write_Word(LCD_InitStructure);

      LCD_InitStructure.c51 = 0X88; //0X88-0X8F 16 8
      LCD_InitStructure.num = 16;
      LCD_InitStructure.dat = (u8*)&"等閑識得東風面，";
      LCD12864_Write_Word(LCD_InitStructure);

      LCD_InitStructure.c51 = 0X98; //0X98-0X9F 16 8
      LCD_InitStructure.num = 16;
      LCD_InitStructure.dat = (u8*)&"萬紫千紅總是春。";
      LCD12864_Write_Word(LCD_InitStructure);

      Delay_ms(500);

      LCD12864_Write_Cmd_Data(CMD,0x01);

      LCD12864_Write_Number(0x80,1314);//u8 0-255 u16 0-65535

      while(1){

            for(u8 i=0;i<200;i++){

                     LCD12864_Write_Number(0x90,i);//u8 0-255 u16 0-65535
                     Delay_ms(200);
            }
      }
}

作者: XLinliY.Zhang 時間: 2023-1-26 02:11
調一下對比度，你這是對比度有問題

作者: hehe、 時間: 2023-1-26 05:05
我看csdn上很多直接vo對比度空接根本不管

作者: hehe、 時間: 2023-1-26 06:45

XLinliY.Zhang 發表于 2023-1-26 02:11
調一下對比度，你這是對比度有問題

我按照csdn 上例程來的很多csdn博主都把VO對比度空接了

作者: fishafish 時間: 2023-1-26 13:13
如何代碼沒有bug，那么調低單片機的主頻試試

作者: 君工創 時間: 2023-1-26 14:19
有一些12864的背面有對比度調節電位器。

歡迎光臨 (http://www.zg4o1577.cn/bbs/)

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