官方给的1602和12864的例子为啥都不行呢？我都没有编译，直接烧写官方编译好的都不行
参考：https://www.stcaimcu.com/forum.p ... d=125103&ptid=11854这里首先得注意一下硬件：
这是我用的屏幕
1.G:\code\stc\Ai8051U\AI8051U-DEMO-CODE-V1.2\36.1-LCD1602显示程序-IO口模拟M6800并行接口
烧写进去后，没有任何反应。
2.G:\code\stc\Ai8051U\AI8051U-DEMO-CODE-V1.2\36.2-LCD1602显示程序-硬件M6800并行接口驱动
这个烧写进去也是没反应。
这个是烧写时的配置。 理论上只需要修改时钟是24即可对吧？可是为啥不行呢？
1602默认是不能用的吧？
参考：https://www.stcaimcu.com/forum.p ... d=123705&ptid=11854
做了一个实物图片。
https://www.stcaimcu.com/data/attachment/forum/202505/11/202746hvl7jecbklks7j5b.jpg
3.3v的似乎要改试验箱硬件？
https://www.stcaimcu.com/forum.p ... 1854&pid=123705
5V的我当时是用最小系统板测的。
https://www.stcaimcu.com/forum.p ... 1854&pid=124119
G:\code\stc\Ai8051U\AI8051U-DEMO-CODE-V1.2\36.3-LCD1602显示程序-硬件M6800并行接口+DMA刷新
这个背光电阻一定要改嘛？原来的不行嘛？
这个12864的也是一样不行。 试了下用试验箱和自己接线，
例程分8bit和32bit两个文件夹
例程36.1、36.2、36.3、36.4都能显示
下载的时候，ISP里的8bit和32bit选对了吗
另外试试在例程里加个闪灯之类程序同时运行，看单片机有没有在工作。
大明狐 发表于 2025-5-11 14:08
试了下用试验箱和自己接线，
例程分8bit和32bit两个文件夹
我8bit和32bit都试过，都是不行的。除了时钟，bit数，还有其他需要设置的吗？我用官方编译好的hex,没有自己编译。其实代码我也看过了，也没看出问题。但是就是烧写后不显示。 durongze 发表于 2025-5-11 14:20
我8bit和32bit都试过，都是不行的。除了时钟，bit数，还有其他需要设置的吗？我用官方编译好的hex,没有自 ...
屏幕本身 或者接线有没检查过？
我也是没编译直接用的例程里的hex，ISP里也是只改了bit和IRC频率。
接线只用了一把杜邦线和一个调节背光的电位器，其它什么都没加。
大明狐 发表于 2025-5-11 14:23
屏幕本身 或者接线有没检查过？
我也是没编译直接用的例程里的hex，ISP里也是只改了bit和IRC频率。
接线只 ...
这个屏幕之前在stg32上用过，是可以用的。
我重新下载了官方的例程。
https://www.stcaimcu.com/data/download/DemoCode/AI8051U-DEMO-CODE-V1.2.zip
使用的工具：
https://www.stcaimcu.com/data/download/Tools/AIapp-ISP-v6.95N.zip
/*---------------------------------------------------------------------*/
/* --- Web: www.STCAI.com ---------------------------------------------*/
/*---------------------------------------------------------------------*/
/*************功能说明 **************
本例程基于AI8051U为主控芯片的实验箱9.6版本进行编写测试。
使用Keil C251编译器，Memory Model推荐设置XSmall模式，默认定义变量在edata，单时钟存取访问速度快。
edata建议保留1K给堆栈使用，空间不够时可将大数组、不常用变量加xdata关键字定义到xdata空间。
128*64的LCD显示程序
显示图形，汉字，英文，数字
下载时, 选择时钟 12MHz (用户可自行修改频率).
******************************************/
#include "../comm/AI8051U.h"
#include "stdio.h"
#include "intrins.h"
typedef unsigned char u8;
typedef unsigned int u16;
typedef unsigned long u32;
#define MAIN_Fosc 12000000UL
/****************************** 用户定义宏 ***********************************/
sbit LCD_RS = P4^5;//定义引脚
sbit LCD_RW = P3^6;//9.5版本之前实验箱需要将P42与P44对调才能正常使用
sbit LCD_E= P3^7;
//sbit PSB = P3^5; //PSB脚为12864的串、并通讯功能切换，我们使用8位并行接口，PSB=1
sbit LCD_RESET = P4^7; //17---RESETL-->Enable
#define LCD_Data P2
#define Busy 0x80 //用于检测LCD状态字中的Busy标识
/*****************************************************************************/
/*************本地常量声明 **************/
u8code uctech[] = {"深圳国芯人工智能"};
u8code net[] = {" www.stcai.com "};
u8code mcu[] = {"专业设计51单片机"};
u8code qq[] = {"AI8051U LQFP48 "};
//128*64点阵图形数据
u8 code gImage_gxw = { /* 0X10,0X01,0X00,0X80,0X00,0X40, */
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x3F,0x03,0xF0,0x3F,0x03,0xF0,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x21,0x02,0x10,0x21,0x02,0x10,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x21,0x02,0x10,0x21,0x02,0x10,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x21,0x02,0x10,0x21,0x02,0x10,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x21,0x02,0x10,0x21,0x02,0x10,0x00,0x00,0x00,0x01,0x00,0x00,0x00,0x7F,0xF0,
0x00,0x21,0x02,0x10,0x21,0x02,0x10,0x01,0xFF,0xF0,0x41,0x00,0x7F,0xC0,0x00,0x00,
0x00,0x21,0x02,0x10,0x21,0x02,0x10,0x01,0x08,0x10,0x41,0x00,0x40,0x40,0x00,0x00,
0x00,0x21,0x02,0x10,0x21,0x02,0x10,0x01,0x08,0x10,0x41,0x00,0x40,0x40,0x00,0x00,
0x7F,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xF9,0x1F,0x90,0x41,0x00,0x7F,0xC0,0x00,0x00,
0x7F,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xF9,0x31,0x10,0x7F,0xF0,0x40,0x41,0xFF,0xFC,
0x60,0x00,0x00,0x00,0x00,0x00,0x00,0x19,0x4A,0x10,0x40,0x00,0x40,0x40,0x02,0x00,
0x60,0x00,0x00,0x00,0x00,0x00,0x00,0x19,0x04,0x10,0x40,0x00,0x7F,0xC0,0x02,0x00,
0x60,0x00,0x00,0x00,0x00,0x00,0x00,0x19,0x1B,0x10,0x40,0x00,0x11,0x00,0x22,0x20,
0x60,0x00,0x00,0x00,0x00,0x00,0x00,0x19,0xE0,0xF0,0x7F,0x81,0x11,0x10,0x22,0x10,
0x60,0x00,0x00,0x00,0x00,0x00,0x00,0x19,0x0C,0x10,0x40,0x80,0x91,0x10,0x42,0x08,
0x60,0x00,0x00,0x00,0x00,0x00,0x00,0x19,0x02,0x10,0x40,0x80,0x51,0x20,0x82,0x04,
0x60,0x00,0x00,0x00,0x00,0x00,0x00,0x19,0x18,0x10,0x40,0x80,0x51,0x41,0x02,0x04,
0x60,0x00,0x00,0x00,0x00,0x00,0x00,0x19,0x06,0x10,0x80,0x80,0x11,0x00,0x0A,0x00,
0x60,0x00,0x00,0x00,0x00,0x00,0x00,0x19,0xFF,0xF0,0x80,0x83,0xFF,0xF8,0x04,0x00,
0x60,0x00,0x00,0x00,0x00,0x00,0x00,0x19,0x00,0x11,0x00,0x80,0x00,0x00,0x00,0x00,
0x60,0x00,0x00,0x00,0x00,0x00,0x00,0x18,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x60,0x00,0x00,0x00,0x00,0x00,0x00,0x18,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x60,0x00,0x00,0x00,0x00,0x00,0x00,0x18,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x60,0x00,0x00,0x00,0x00,0x00,0x00,0x18,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x60,0x00,0x00,0x00,0x00,0x00,0x00,0x18,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x60,0x00,0x00,0x00,0x00,0x00,0x00,0x18,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x60,0x00,0x00,0x00,0x00,0x00,0x00,0x18,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x63,0x07,0x87,0x83,0xCF,0xC1,0x8C,0xD8,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x67,0x83,0x0C,0xC6,0x6C,0x03,0x8C,0xD8,0x00,0x00,0x00,0x00,0x00,0x3E,0x00,0x00,
0x6C,0xC3,0x0C,0xC6,0xEC,0x0F,0x8C,0xD8,0x00,0x3C,0x00,0x00,0x00,0xFF,0x80,0x00,
0x6C,0xC3,0x0E,0xC6,0xEC,0x01,0x8C,0xD8,0x00,0xFF,0x80,0x00,0x03,0xFF,0xE0,0x00,
0x6C,0xC3,0x07,0x86,0x6F,0x81,0x8C,0xD8,0x03,0xFF,0xE0,0x00,0x07,0xFF,0xF0,0x00,
0x6F,0xC3,0x0D,0xC7,0x60,0xC1,0x8C,0xD8,0x07,0x80,0xF0,0x00,0x0F,0xFF,0xF8,0x00,
0x6C,0xC3,0x0C,0xC7,0x60,0xC1,0x8C,0xD8,0x0E,0x18,0x38,0x00,0x1F,0xFF,0xFC,0x00,
0x6C,0xC3,0x0C,0xC6,0x61,0x81,0x8C,0xD8,0x1C,0x18,0x1C,0x00,0x1F,0xFF,0xFC,0x00,
0x6C,0xC7,0x87,0x83,0xCF,0x01,0x87,0x98,0x38,0x18,0x0E,0x00,0x3F,0xFF,0xFE,0x00,
0x60,0x00,0x00,0x00,0x00,0x00,0x00,0x18,0x30,0x18,0x06,0x00,0x3F,0xFF,0xFE,0x00,
0x60,0x00,0x00,0x00,0x00,0x00,0x00,0x18,0x70,0x18,0x07,0x00,0x7C,0x3E,0x1F,0x00,
0x60,0x00,0x00,0x00,0x00,0x00,0x00,0x18,0x60,0x18,0x03,0x00,0x7C,0x3E,0x1F,0x00,
0x60,0x00,0x00,0x00,0x00,0x00,0x00,0x18,0x60,0x18,0x03,0x00,0x7E,0x7F,0x3F,0x00,
0x60,0x00,0x00,0x00,0x00,0x00,0x00,0x18,0xF0,0x18,0x07,0x80,0x7F,0xFF,0xFF,0x00,
0x60,0x00,0x00,0x00,0x00,0x00,0x00,0x18,0xF8,0x1F,0xCF,0x80,0x7F,0xFF,0xFF,0x00,
0x60,0x00,0x00,0x00,0x00,0x00,0x00,0x18,0xF8,0x1F,0xCF,0x80,0x7F,0xFF,0xFF,0x00,
0x60,0x00,0x00,0x00,0x00,0x00,0x00,0x18,0xF0,0x00,0x07,0x80,0x7F,0xFF,0xFF,0x00,
0x60,0x00,0x00,0x00,0x00,0x00,0x00,0x18,0x60,0x00,0x03,0x00,0x7F,0x80,0xFF,0x00,
0x60,0x00,0x00,0x00,0x00,0x00,0x00,0x18,0x70,0x00,0x07,0x00,0x3F,0x80,0xFE,0x00,
0x60,0x00,0x00,0x00,0x00,0x00,0x00,0x18,0x30,0x00,0x06,0x00,0x3F,0xC1,0xFE,0x00,
0x60,0x00,0x00,0x00,0x00,0x00,0x00,0x18,0x38,0x00,0x0E,0x00,0x1F,0xE3,0xFC,0x00,
0x60,0x00,0x00,0x00,0x00,0x00,0x00,0x18,0x1C,0x00,0x1C,0x00,0x0F,0xFF,0xF8,0x00,
0x60,0x00,0x00,0x00,0x00,0x00,0x00,0x18,0x0E,0x18,0x38,0x00,0x07,0xFF,0xF0,0x00,
0x60,0x00,0x00,0x00,0x00,0x00,0x00,0x18,0x07,0xBC,0xF0,0x00,0x03,0xFF,0xE0,0x00,
0x60,0x00,0x00,0x00,0x00,0x00,0x00,0x18,0x03,0xFF,0xE0,0x00,0x01,0xFF,0xC0,0x00,
0x60,0x00,0x00,0x00,0x00,0x00,0x00,0x18,0x00,0xFF,0x80,0x00,0x00,0x3E,0x00,0x00,
0x7F,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xF8,0x00,0x3C,0x00,0x00,0x00,0x00,0x00,0x00,
0x7F,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xF8,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x21,0x02,0x10,0x21,0x02,0x10,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x21,0x02,0x10,0x21,0x02,0x10,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x21,0x02,0x10,0x21,0x02,0x10,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x21,0x02,0x10,0x21,0x02,0x10,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x21,0x02,0x10,0x21,0x02,0x10,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x21,0x02,0x10,0x21,0x02,0x10,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x21,0x02,0x10,0x21,0x02,0x10,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x3F,0x03,0xF0,0x3F,0x03,0xF0,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
};
/*************本地变量声明 **************/
/*************本地函数声明 **************/
void delay_ms(u16 ms);
void WriteDataLCD(u8 WDLCD);
void WriteCommandLCD(u8 WCLCD,u8 BuysC);
u8 ReadDataLCD(void);
u8 ReadStatusLCD(void);
void LCDInit(void);
void LCDClear(void);
void LCDFlash(void);
void DisplayOneChar(u8 X, u8 Y, u8 DData);
void DisplayListChar(u8 X, u8 Y, u8 code *DData);
void DisplayImage (u8 code *DData);
/********************* 主函数 *************************/
void main(void)
{
WTST = 0;//设置程序指令延时参数，赋值为0可将CPU执行指令的速度设置为最快
EAXFR = 1; //扩展寄存器(XFR)访问使能
CKCON = 0; //提高访问XRAM速度
P0M1 = 0x00; P0M0 = 0x00; //设置为准双向口
P1M1 = 0x00; P1M0 = 0x00; //设置为准双向口
P2M1 = 0x00; P2M0 = 0x00; //设置为准双向口
P3M1 = 0x00; P3M0 = 0xc0; //设置为准双向口
P4M1 = 0x00; P4M0 = 0xa0; //设置为准双向口
P5M1 = 0x00; P5M0 = 0x00; //设置为准双向口
P6M1 = 0x00; P6M0 = 0x00; //设置为准双向口
P7M1 = 0x00; P7M0 = 0x00; //设置为准双向口
delay_ms(100); //启动等待，等LCD讲入工作状态
LCDInit(); //LCM初始化
delay_ms(5); //延时片刻(可不要)
while(1)
{
LCDClear();
DisplayImage(gImage_gxw);//显示图形
delay_ms(3000);
LCDClear();
DisplayListChar(0,1,uctech); //显示字库中的中文数字
DisplayListChar(0,2,net); //显示字库中的中文数字
DisplayListChar(0,3,mcu); //显示字库中的中文
DisplayListChar(0,4,qq); //显示字库中的中文数字
delay_ms(3000);
}
}
//========================================================================
// 函数: void delay_ms(u8 ms)
// 描述: 延时函数。
// 参数: ms,要延时的ms数, 这里只支持1~255ms. 自动适应主时钟.
// 返回: none.
// 版本: VER1.0
// 日期: 2013-4-1
// 备注:
//========================================================================
void delay_ms(u16 ms)
{
u16 i;
do{
i = MAIN_Fosc / 6000;
while(--i);
}while(--ms);
}
//******************************************
void LCD_delay(void)
{
NOP(30); //电压降低，IO口翻转速度变慢，驱动信号需要增加延时时间
NOP(30);
}
//写数据
void WriteDataLCD(u8 WDLCD)
{
ReadStatusLCD(); //检测忙
LCD_RS = 1;
LCD_delay();
LCD_RW = 0;
LCD_Data = WDLCD;
LCD_delay();
LCD_E = 1;
LCD_delay();
LCD_E = 0;
}
//写指令
void WriteCommandLCD(u8 WCLCD,u8 BuysC) //BuysC为0时忽略忙检测
{
if (BuysC) ReadStatusLCD(); //根据需要检测忙
LCD_RS = 0;
LCD_delay();
LCD_RW = 0;
LCD_Data = WCLCD;
LCD_delay();
LCD_E = 1;
LCD_delay();
LCD_E = 0;
}
//读状态
u8 ReadStatusLCD(void)
{
LCD_Data = 0xFF;
LCD_RS = 0;
LCD_delay();
LCD_RW = 1;
LCD_delay();
LCD_E = 1;
LCD_delay();
while (LCD_Data & Busy); //检测忙信号
LCD_E = 0;
return(LCD_Data);
}
void LCDInit(void) //LCM初始化
{
//PSB = 1; //并口
//PSB = 0; //SPI口
delay_ms(10);
LCD_RESET = 0;
delay_ms(10);
LCD_RESET = 1;
delay_ms(100);
WriteCommandLCD(0x30,1); //显示模式设置,开始要求每次检测忙信号
WriteCommandLCD(0x01,1); //显示清屏
WriteCommandLCD(0x06,1); // 显示光标移动设置
WriteCommandLCD(0x0C,1); // 显示开及光标设置
}
void LCDClear(void) //清屏
{
WriteCommandLCD(0x01,1); //显示清屏
WriteCommandLCD(0x34,1); // 显示光标移动设置
WriteCommandLCD(0x30,1); // 显示开及光标设置
}
//按指定位置显示一串字符
void DisplayListChar(u8 X, u8 Y, u8 code *DData)
{
u8 ListLength,X2;
ListLength = 0;
X2 = X;
if(Y < 1) Y=1;
if(Y > 4) Y=4;
X &= 0x0F; //限制X不能大于16，Y在1-4之内
switch(Y)
{
case 1: X2 |= 0X80; break;//根据行数来选择相应地址
case 2: X2 |= 0X90; break;
case 3: X2 |= 0X88; break;
case 4: X2 |= 0X98; break;
}
WriteCommandLCD(X2, 1); //发送地址码
while (DData >= 0x20) //若到达字串尾则退出
{
if (X <= 0x0F) //X坐标应小于0xF
{
WriteDataLCD(DData); //
ListLength++;
X++;
}
}
}
//图形显示122*32
void DisplayImage (u8 code *DData)
{
u8 x,y,i;
unsigned int tmp=0;
for(i=0;i<9;) //分两屏，上半屏和下半屏，因为起始地址不同，需要分开
{
for(x=0;x<32;x++) //32行
{
WriteCommandLCD(0x34,1);
WriteCommandLCD((u8)(0x80+x),1);//列地址
WriteCommandLCD((u8)(0x80+i),1); //行地址，下半屏，即第三行地址0X88
WriteCommandLCD(0x30,1);
for(y=0;y<16;y++)
WriteDataLCD(DData);//读取数据写入LCD
tmp+=16;
}
i+=8;
}
WriteCommandLCD(0x36,1); //扩充功能设定
WriteCommandLCD(0x30,1);
}