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最近开始学习TFT遇到了点问题 希望大家帮帮忙,单片机是飞思卡尔系列的 驱动用的9320,现在感觉是数据没写进去,想写一个读寄存器的函数 但好像不能用,已经调试了两天了,硬件什么的都没问题~大家帮忙分析下 谢谢了~ 下面是代码
#include <hidef.h> /* common defines and macros */
#include "derivative.h" /* derivative-specific definitions */
#include <MC9S12XS128.h>
#define Bus_16 //16位数据模式,如果使用8位模式,请注释此语句,如果使用16位模式,请打开此句
#define LCD_DataPortH PTT //高8位数据口,8位模式下只使用高8位
#define LCD_DataPortL PORTA //低8位数据口 ,8位模式下低8位可以不接线,请确认P0口已经上拉10K电阻,不宜太小,最小4.7K,推荐10K.
#define LCD_RS PTP_PTP0 //数据/命令切换
#define LCD_WR PTP_PTP1 //写控制
#define LCD_RD PTP_PTP2 //读控制
#define LCD_CS PTP_PTP3 //片选
#define LCD_REST PTP_PTP4
void delayms(int count) // /* X1ms */
{
int i,j;
for(i=0;i<count;i++)
for(j=0;j<1000;j++);
}
#ifdef Bus_16 //条件编译-16位数据模式
void LCD_Writ_Bus(char VH,char VL) //并行数据写入函数
{
LCD_DataPortH=VH;
LCD_DataPortL=VL;
LCD_WR=0;
LCD_WR=1;
}
#else //条件编译-8位数据模式
void LCD_Writ_Bus(char VH,char VL) //并行数据写入函数
{
LCD_DataPortH=VH;
LCD_WR=0;
LCD_WR=1;
LCD_DataPortH=VL;
LCD_WR=0;
LCD_WR=1;
}
#endif
void Lcd_Write_Com(char VH,char VL) //发送命令-8位参数
{
LCD_RS=0;
LCD_Writ_Bus(VH,VL);
}
void Lcd_Write_Data(char VH,char VL) //发送数据-8位参数
{
LCD_RS=1;
LCD_Writ_Bus(VH,VL);
}
void Lcd_Write_Com_Data(int com,int val) //发送数据命令
{
Lcd_Write_Com(com>>8,com);
Lcd_Write_Data(val>>8,val);
}
void LCD_read_com(char VH,char VL) //读寄存器编号
{
int a,b;
LCD_CS=0;
Lcd_Write_Com(VH,VL); //写入要读的寄存器号
DDRA= 0x00;
DDRT=0x00;
DDRP=0xff;
LCD_DataPortH=0x00; //全部输出0
LCD_DataPortL=0x00;
LCD_CS=0;
LCD_RS=1;
LCD_RD=1;
LCD_RD=0;
LCD_RD=1;
//读取数据(读寄存器时,并不需要读2次)
a= LCD_DataPortH;
b= LCD_DataPortL;
DDRA= 0xff;
DDRT=0xff;
DDRP=0xff;
LCD_CS=1;
}
void Address_set(unsigned int x1,unsigned int y1,unsigned int x2,unsigned int y2)
{
Lcd_Write_Com(0x00,0x20);Lcd_Write_Data(x1>>8,x1); //设置X坐标位置
Lcd_Write_Com(0x00,0x21);Lcd_Write_Data(y1>>8,y1); //设置Y坐标位置
Lcd_Write_Com(0x00,0x50);Lcd_Write_Data(x1>>8,x1); //开始X
Lcd_Write_Com(0x00,0x52);Lcd_Write_Data(y1>>8,y1); //开始Y
Lcd_Write_Com(0x00,0x51);Lcd_Write_Data(x2>>8,x2); //结束X
Lcd_Write_Com(0x00,0x53);Lcd_Write_Data(y2>>8,y2); //结束Y
Lcd_Write_Com(0x00,0x22);
}
void Lcd_Init(void)
{
DDRA= 0xff;
DDRT=0xff;
DDRP=0xff;
PUCR=0x11;
LCD_REST=1;
delayms(5);
LCD_REST=0;
delayms(5);
LCD_REST=1;
LCD_CS=1;
LCD_RD=1;
LCD_WR=1;
delayms(5);
LCD_CS =0; //打开片选使能
//************* Start Initial Sequence **********//
Lcd_Write_Com_Data(0x00e5, 0x8000);
Lcd_Write_Com_Data(0x0000, 0x0001);
Lcd_Write_Com_Data(0x0001, 0x0100);
Lcd_Write_Com_Data(0x0002, 0x0700);
Lcd_Write_Com_Data(0x0003, 0x1030);
Lcd_Write_Com_Data(0x0004, 0x0000);
Lcd_Write_Com_Data(0x0008, 0x0202);
Lcd_Write_Com_Data(0x0009, 0x0000);
Lcd_Write_Com_Data(0x000A, 0x0000);
Lcd_Write_Com_Data(0x000C, 0x0000);
Lcd_Write_Com_Data(0x000D, 0x0000);
Lcd_Write_Com_Data(0x000F, 0x0000);
//-----Power On sequence-----------------------
Lcd_Write_Com_Data(0x0010, 0x0000);
Lcd_Write_Com_Data(0x0011, 0x0007);
Lcd_Write_Com_Data(0x0012, 0x0000);
Lcd_Write_Com_Data(0x0013, 0x0000);
delayms(150);
Lcd_Write_Com_Data(0x0010, 0x17B0);
Lcd_Write_Com_Data(0x0011, 0x0007);
delayms(50);
Lcd_Write_Com_Data(0x0012, 0x013A);
delayms(50);
Lcd_Write_Com_Data(0x0013, 0x1A00);
Lcd_Write_Com_Data(0x0029, 0x000c);
delayms(50);
//-----Gamma control-----------------------
Lcd_Write_Com_Data(0x0030, 0x0000);
Lcd_Write_Com_Data(0x0031, 0x0505);
Lcd_Write_Com_Data(0x0032, 0x0004);
Lcd_Write_Com_Data(0x0035, 0x0006);
Lcd_Write_Com_Data(0x0036, 0x0707);
Lcd_Write_Com_Data(0x0037, 0x0105);
Lcd_Write_Com_Data(0x0038, 0x0002);
Lcd_Write_Com_Data(0x0039, 0x0707);
Lcd_Write_Com_Data(0x003C, 0x0704);
Lcd_Write_Com_Data(0x003D, 0x0807);
//-----Set RAM area-----------------------
Lcd_Write_Com_Data(0x0050, 0x0000);
Lcd_Write_Com_Data(0x0051, 0x00EF);
Lcd_Write_Com_Data(0x0052, 0x0000);
Lcd_Write_Com_Data(0x0053, 0x013F);
Lcd_Write_Com_Data(0x0060, 0x2700);
Lcd_Write_Com_Data(0x0061, 0x0001);
Lcd_Write_Com_Data(0x006A, 0x0000);
Lcd_Write_Com_Data(0x0021, 0x0000);
Lcd_Write_Com_Data(0x0020, 0x0000);
//-----Partial Display Control------------
Lcd_Write_Com_Data(0x0080, 0x0000);
Lcd_Write_Com_Data(0x0081, 0x0000);
Lcd_Write_Com_Data(0x0082, 0x0000);
Lcd_Write_Com_Data(0x0083, 0x0000);
Lcd_Write_Com_Data(0x0084, 0x0000);
Lcd_Write_Com_Data(0x0085, 0x0000);
//-----Panel Control----------------------
Lcd_Write_Com_Data(0x0090, 0x0010);
Lcd_Write_Com_Data(0x0092, 0x0000);
Lcd_Write_Com_Data(0x0093, 0x0003);
Lcd_Write_Com_Data(0x0095, 0x0110);
Lcd_Write_Com_Data(0x0097, 0x0000);
Lcd_Write_Com_Data(0x0098, 0x0000);
//-----Display on-----------------------
Lcd_Write_Com_Data(0x0007, 0x0173);
delayms(50);
LCD_CS =1; //关闭片选使能
}
void Pant(char VH,char VL)
{
int i,j;
LCD_CS =0; //打开片选使能
Address_set(0,0,239,319);
for(i=0;i<320;i++)
{
for (j=0;j<240;j++)
{
Lcd_Write_Data(VH,VL);
}
}
LCD_CS =1; //关闭片选使能
}
main()
{
Lcd_Init(); //TFT初始化
Pant(0xff,0xff); //TFT清屏
delayms(2000);
LCD_read_com(0x00,0x22);
while(1)
{
Pant(0xf8,0x00); //红色
delayms(2000);
Pant(0X07,0xE0); //绿色
delayms(2000);
Pant(0x00,0x1f); //蓝色
delayms(2000);
}
}
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阿莫论坛20周年了!感谢大家的支持与爱护!!
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