ATmega16连接2.4寸TFT模块后只有白屏

哈喽KT · 发表于 2016-3-28 15:23:05

搞了好几天了，液晶屏幕一直是白屏，程序就是给了一个基本的ILI9325控制和一个刷屏函数，至今不能实现刷屏，求大神帮助啊！！！以下是我的程序，硬件电路端口都借了10K的上拉电阻~~
#include <iom16v.h>
#include <macros.h>
#include <TFT9325.h>

#define White       0xFFFF
#define Black       0x0000
#define Blue          0x001F
#define Blue2       0x051F
#define Red          0xF800
#define Magenta       0xF81F
#define Green       0x07E0
#define Cyan          0x7FFF
#define Yellow       0xFFE0

void delay_us(unsigned int n)
{
while(n--)
   ;
}
void delay_ms(unsigned int n)
{
unsigned int j;
while(n--)
   for(j=0;j<1140;j++);
}

/*写一个命令到TFT控制器*/
void write_cmd(uchar CH,uchar CL)//CH,CL分别为命令字的高8位和低8位，指定要执行的命令。
{
CS_0;
RS_0;
PORTA=CH;
RW_0;
RW_1;
PORTA=CL;
RW_0;
RW_1;
CS_1;
}
/*写一个数据到TFT控制器*/
void write_data(uchar DH,uchar DL)//DH,DL分别为数据字的高8位和低8位，指定要写入的数据
{
CS_0;
RS_1;
PORTA=DH;
RW_0;
RW_1;
PORTA=DL;
RW_0;
RW_1;
CS_1;
}
/*写命令数据到TFT控制器*/
void write_cmd_data (uchar cmd,uint dat)//cmd为要写入的命令字节；dat为要写入的16位数据。
{
uchar m,n;
m=dat>>8;
n=dat;
write_cmd(0x00,cmd);
write_data(m,n);
}
void ILI9325_initial(void)
{
CS_1;
delay_ms(5);
RST_0;
delay_ms(5);
RST_1;
delay_ms(50);//可以适当调整延时，保障稳定显示
write_cmd_data(0x0001,0x0100); //源扫描设置SS=0, 输出的移动方向是从S1到S720
//（源扫描设置SS=1, 输出的移动方向是从S720到S1）
//SM=0，逐行扫描（SM=1，隔行扫描）
write_cmd_data(0x0002,0x0700); //B/C=1、EOR=1：行倒置（B/C=0：帧/场倒置）
write_cmd_data(0x0003,0x1030); //AM=0，地址在水平方向自动加1
//I/D[1:0] = 11：水平垂直方向均增加
//BGR=1:采用BGR格式
//TRI=0、DFM=*：8位机、两次数据传送
write_cmd_data(0x0004,0x0000); //比例缩放设置：不缩放
//显示控制
write_cmd_data(0x0008,0x0207); //设置后边沿和前沿
write_cmd_data(0x0009,0x0000);//设置非显示区时间间隔ISC[3:0]
write_cmd_data(0x000A,0x0000); //帧标记功能
write_cmd_data(0x000C,0x0000);//RGB显示接口控制1
write_cmd_data(0x000D,0x0000);//帧标记位置
write_cmd_data(0x000F,0x0000);//RGB显示接口控制2
//电源配置
write_cmd_data(0x0010,0x0000);
write_cmd_data(0x0011,0x0007);
write_cmd_data(0x0012,0x0000);
write_cmd_data(0x0013,0x0000);
//vgh
write_cmd_data(0x0010,0x1290);
write_cmd_data(0x0011,0x0227);
//delayms(100);
//vregiout
write_cmd_data(0x0012,0x001d); //0x001b
//delayms(100);
//vom amplitude
write_cmd_data(0x0013,0x1500);
//delayms(100);
//vom H
write_cmd_data(0x0029,0x0018);
write_cmd_data(0x002B,0x000D);
//伽马校正
write_cmd_data(0x0030,0x0004);
write_cmd_data(0x0031,0x0307);
write_cmd_data(0x0032,0x0002);//0006
write_cmd_data(0x0035,0x0206);
write_cmd_data(0x0036,0x0408);
write_cmd_data(0x0037,0x0507);
write_cmd_data(0x0038,0x0204);//0200
write_cmd_data(0x0039,0x0707);
write_cmd_data(0x003C,0x0405);//0504
write_cmd_data(0x003D,0x0F02);
//窗口设置
write_cmd_data(0x0050,0x0000);//水平起始位置
write_cmd_data(0x0051,0x00EF);//水平终止位置
write_cmd_data(0x0052,0x0000);//垂直起始位置
write_cmd_data(0x0053,0x013F);//垂直终止位置
write_cmd_data(0x0060,0xA700);//门扫描设置，GS=1：从G320扫描到G1，320线
write_cmd_data(0x0061,0x0001);
write_cmd_data(0x006A,0x0000);
write_cmd_data(0x0080,0x0000);
write_cmd_data(0x0081,0x0000);
write_cmd_data(0x0082,0x0000);
write_cmd_data(0x0083,0x0000);
write_cmd_data(0x0084,0x0000);
write_cmd_data(0x0085,0x0000);
write_cmd_data(0x0090,0x0010);
write_cmd_data(0x0092,0x0600);
write_cmd_data(0x0093,0x0003);
write_cmd_data(0x0095,0x0110);
write_cmd_data(0x0097,0x0000);
write_cmd_data(0x0098,0x0000);
write_cmd_data(0x0007,0x0133);
//write_cmd_data(0x0022);
}
/*写一个16位数据到TFT控制器*/
void write_data_u16(uint dat)//入口参数: dat为要写入的16位数据。
{
uchar m,n;
m=dat>>8;
n=dat;
write_data(m,n);
}
/*设置TFT模块的显示窗口*/
void LCD_setwindow(uchar x0,uint y0,uchar x1,uint y1)//入口参数: x0 y0,为显示窗口左上角坐标；x1,y1为显示窗口右下角坐标。
{
write_cmd_data(WINDOW_XADDR_START,x0);//水平起始位置
write_cmd_data(WINDOW_XADDR_END,x1);//水平终止位置
write_cmd_data(WINDOW_YADDR_START,y0);//垂直起始位置
write_cmd_data(WINDOW_YADDR_END,y1);//垂直终止位置
write_cmd_data(GRAM_XADDR,x0);//设置X坐标位置
write_cmd_data(GRAM_YADDR,y0);//设置Y坐标位置
write_cmd(0x00,0x22);//LCD_WriteCMD(GRAMWR);
}
/*设定当前显示坐标*/
//说明：本函数实际上是LCD_setwindow函数的一个特例，显示窗口为最小，仅是一个像素点。
void LCD_setxy(uchar x,uint y)//x,y为当前显示坐标
{
LCD_setwindow(x,y,x,y);
}
/*清屏*/
void GUI_clearscreen(uint b_color)//b_color是背景颜色
{
uint i,j;
LCD_setwindow(0,0,240,320);
for (i=0;i<320;i++)
{
  for(j=0;j<240;j++)
  write_data_u16(b_color);
}
}

void main(void)
{
DDRA=0XFF;
DDRC|=0XF0;
ILI9325_initial();
delay_ms(20);
GUI_clearscreen(Blue);
while(1);
}