刚开始学32f407zgt6这块板子，想控制LCD1602在网上找了例程，编译可以通过，下载后LCD没反应，是怎么回事，那位大哥能帮忙看一下

ZYL1111111 · 发表于 2019-8-14 14:29:25

#include "sys.h"
#include "1602.h"
u8  table1[]="->China Yancheng" ;
u8  table2[]="  Welcome To You" ;
/*******************Ö÷º¯Êý************************/
int main(void)
{
  u8 i;
  delay_init(3);//ÑÓÊ±º¯Êý³õÊ¼»¯
  LCD1602_Init();//LCD1602³õÊ¼»¯º¯Êý
  while(1)
  {
LCD_Write_Command(0x80);//µÚÒ»ÐÐµÄÊ×µØÖ·
for(i=0;i<16;i++)
{
   LCD_Write_Date(table1[i]);
   delay_ms(3);
}
LCD_Write_Command(0x80+0x40);//µÚ¶þÐÐµÄÊ×µØÖ·
for(i=0;i<16;i++)
{
   LCD_Write_Date(table2[i]);
   delay_ms(3);
}
  }
}
#include"1602.h"
#include"sys.h"
#include "delay.h"

/*******************LCD1602³õÊ¼»¯************************/
void LCD1602_Init(void)
{
   GPIO_InitTypeDef  GPIO_InitStructure;
RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOD|RCC_AHB1Periph_GPIOC, ENABLE);  //Ê¹Ä&Uuml

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   GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0|GPIO_Pin_1|GPIO_Pin_2;    //LCD1602µÄÈý¸ù¿ØÖÆÏßrs,rw,en
   GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; //IO¿ÚËÙ¶ÈÎª50MHz
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_OUT; //ÆÕÍ¨Êä³öÄ£Ê½
   GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;    //ÍÆÍìÊä³ö
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;//ÉÏÀ
   GPIO_Init(GPIOC, &GPIO_InitStructure);//¸ù¾ÝÉè¶¨²ÎÊý³õÊ¼»¯GPIOC

GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0|GPIO_Pin_1|GPIO_Pin_2|GPIO_Pin_3|GPIO_Pin_4|GPIO_Pin_5|GPIO_Pin_6|GPIO_Pin_7;//LCD1602µÄ8¸úÊý¾ÝÏß       //LED1-->

E.5 ¶Ë¿ÚÅäÖÃ, ÍÆÍìÊä³ö
   //GPIO_InitStructure.GPIO_Mode = GPIO_Mode_OUT; //ÆÕÍ¨Êä³öÄ£Ê½
   //GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;    //ÍÆÍìÊä³ö
   //GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;//IO¿ÚËÙ¶ÈÎª50MHz
//GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;//ÉÏÀ
   GPIO_Init(GPIOD, &GPIO_InitStructure);//¸ù¾ÝÉè¶¨²ÎÊý³õÊ¼»¯GPIOD
LCD_Write_Command(0x38);//ÉèÖÃLCDÁ½ÐÐÏÔÊ¾£¬Ò»¸öÊý¾ÝÓÉ5*7µãÕó±íÊ¾,Êý¾ÝÓÉ8¸ùÏß´«Êä
   delay_ms(2);
LCD_Write_Command(0x01);//Çå³ýÆÁÄ»ÏÔÊ¾
delay_ms(2);
LCD_Write_Command(0x06);//Éè¶¨ÊäÈë·½Ê½£¬ÔöÁ¿²»ÒÆÎ»
delay_ms(2);
LCD_Write_Command(0x0c);//¿ªÕûÌåÏÔÊ¾£¬¹Ø¹â±ê£¬²»ÉÁË¸
delay_ms(2);
}

/*******************Ð´Ö¸Áîº¯Êý************************/
void LCD_Write_Command(u8 com)
{ GPIO_Write(GPIOD, 0XFF&com);//¿ÉÒÔÒ»´ÎÐÔ¸ø¶à¸öI/O¿Ú¸³Öµ£¬½«Êý¾ÝÐ´ÈëÖ¸¶¨µÄGPIO¶Ë¿Ú
  rs=0;
rw=0;
en=1;  //Ð´Ö¸Áî    ÊäÈë£ºRS=L£¬RW=L£¬E=ÏÂ½µÑØÂö³å
  //GPIO_Write(GPIOD, 0XFF&com);//¿ÉÒÔÒ»´ÎÐÔ¸ø¶à¸öI/O¿Ú¸³Öµ£¬½«Êý¾ÝÐ´ÈëÖ¸¶¨µÄGPIO¶Ë¿Ú
  delay_ms(2);
  en=0;
}

/*******************Ð´Êý¾Ýº¯Êý************************/
void LCD_Write_Date(u8 date)
{ GPIO_Write(GPIOD, 0XFF&date);//GPIOAµÄµÚ°ËÎ»ÓÃÀ´×÷Îª8Î»Êý¾Ý¿Ú
  rs=1;
rw=0;
en=1; //Ð´Êý¾Ý    ÊäÈë£ºRS=H£¬RW=L£¬E=ÏÂ½µÑØÂö³å
  //GPIO_Write(GPIOD, 0XFF&date);//GPIOAµÄµÚ°ËÎ»ÓÃÀ´×÷Îª8Î»Êý¾Ý¿Ú
  delay_ms(2);
  en=0;
}