MEGA16L单片机驱动2.4寸tft，控制芯片为ILI9325

e1909 · 发表于 2010-10-2 19:30:14

MEGA16L单片机驱动2.4寸tft，控制芯片为ILI9325，谁给一个程序吧。做了几天了都没做出来，特急，那位朋友和我一样是做单片机控制tft显示图形的，或者已做过了，探讨一下

zywh · 发表于 2010-10-2 23:06:48

我现在还只能让它显示红、绿、蓝.....只能知道大概的原理....给你看我最近写的程序...
好像如果要显示一张图片的话。。。m16的flash太小了。。。得装SD卡才行哦。。。

#include <avr/io.h>
#define F_CPU 11000000
#include <util/delay.h>

#define Bus_16 //16位数据模式，如果使用8位模式，请注释词句，如果使用16位模式，请打开词句
#define LCD_DataPORT_H PORTC //高8位数据口，8位模式下只使用高8位
#define LCD_DataPIN_H PINC
#define LCD_DataDDR_H DDRC
#define LCD_DataPORT_L PORTA //低8位数据口，8位模式下低8位可以不接线，请确认PA口已经上拉10K电阻，不宜太小，最小4.7K，推荐10K
#define LCD_DataPIN_L PINA
#define LCD_DataDDR_L DDRA

#define LCD_CTRL PORTD
#define LCD_CTRL_DDR DDRD
#define LCD_RS PD2 //
#define LCD_WR PD3
#define LCD_RD PD4
#define LCD_CS PD0
#define LCD_REST PD1

#define RS_0 (LCD_CTRL &= ~(1 << LCD_RS))
#define RS_1 (LCD_CTRL |= (1 << LCD_RS))

#define WR_0 (LCD_CTRL &= ~(1 << LCD_WR))
#define WR_1 (LCD_CTRL |= (1 << LCD_WR))

#define RD_0 (LCD_CTRL &= ~(1 << LCD_RD))
#define RD_1 (LCD_CTRL |= (1 << LCD_RD))

#define CS_0 (LCD_CTRL &= ~(1 << LCD_CS))
#define CS_1 (LCD_CTRL |= (1 << LCD_CS))

#define REST_0 (LCD_CTRL &= ~(1 << LCD_REST))
#define REST_1 (LCD_CTRL |= (1 << LCD_REST))

#define busy_time 5 //延时时间

#ifdef Bus_16 //条件编译-16位数据模式

void LCD_Port_Init(void) //LCD端口初始化
{
LCD_DataDDR_H = 0xff; //方向为输出
LCD_DataDDR_L = 0xff; //方向为输出
LCD_CTRL_DDR |= (1 << LCD_RS) | (1 << LCD_WR) | (1 << LCD_RD) | (1 << LCD_CS) | (1 << LCD_REST); //方向输出

}

void LCD_Writ_Bus(char VH, char VL) //并行数据写入函数
{
LCD_DataPORT_H = VH;
LCD_DataPORT_L = VL;
WR_0;
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_DataPORT_H = VH;
WR_0;
WR_1;
LCD_DataPORT_H = VL;
WR_0;
WR_1;
}
#endif

void LCD_Write_Com(char VH,char VL) //发送命令
{
RS_0;
LCD_Writ_Bus(VH, VL);
}

void LCD_Write_Data(char VH, char VL) //发送数据
{
RS_1;
LCD_Writ_Bus(VH, VL);
}

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)
{
REST_1;
_delay_ms(busy_time);
REST_0;
_delay_ms(busy_time);
REST_1;
CS_1;
RD_1;
WR_1;
_delay_ms(busy_time);

CS_0; //打开片选使能

//************* Start Initial Sequence **********//
LCD_Write_Com(0x00,0xE5); LCD_Write_Data(0x78,0xF0); // set SRAM internal timing
LCD_Write_Com(0x00,0x01); LCD_Write_Data(0x01,0x00); // set SS and SM bit
LCD_Write_Com(0x00,0x02); LCD_Write_Data(0x07,0x00); // set 1 line inversion
LCD_Write_Com(0x00,0x03); LCD_Write_Data(0x10,0x30); // set GRAM write direction and BGR=1.
LCD_Write_Com(0x00,0x04); LCD_Write_Data(0x00,0x00); // Resize register
LCD_Write_Com(0x00,0x08); LCD_Write_Data(0x02,0x07); // set the back porch and front porch
LCD_Write_Com(0x00,0x09); LCD_Write_Data(0x00,0x00); // set non-display area refresh cycle ISC[3:0]
LCD_Write_Com(0x00,0x0A); LCD_Write_Data(0x00,0x00); // FMARK function
LCD_Write_Com(0x00,0x0C); LCD_Write_Data(0x00,0x00); // RGB interface setting
LCD_Write_Com(0x00,0x0D); LCD_Write_Data(0x00,0x00); // Frame marker Position
LCD_Write_Com(0x00,0x0F); LCD_Write_Data(0x00,0x00); // RGB interface polarity
//*************Power On sequence ****************//
LCD_Write_Com(0x00,0x10); LCD_Write_Data(0x00,0x00); // SAP, BT[3:0], AP, DSTB, SLP, STB
LCD_Write_Com(0x00,0x11); LCD_Write_Data(0x00,0x07); // DC1[2:0], DC0[2:0], VC[2:0]
LCD_Write_Com(0x00,0x12); LCD_Write_Data(0x00,0x00); // VREG1OUT voltage
LCD_Write_Com(0x00,0x13); LCD_Write_Data(0x00,0x00); // VDV[4:0] for VCOM amplitude
LCD_Write_Com(0x00,0x07); LCD_Write_Data(0x00,0x01);
_delay_ms(50); // Dis-charge capacitor power voltage
LCD_Write_Com(0x00,0x10); LCD_Write_Data(0x10,0x90); // 1490//SAP, BT[3:0], AP, DSTB, SLP, STB
LCD_Write_Com(0x00,0x11); LCD_Write_Data(0x02,0x27); // DC1[2:0], DC0[2:0], VC[2:0]
_delay_ms(50); // Delay 50ms
LCD_Write_Com(0x00,0x12); LCD_Write_Data(0x00,0x1F); //001C// Internal reference voltage= Vci;
_delay_ms(50); // Delay 50ms
LCD_Write_Com(0x00,0x13); LCD_Write_Data(0x15,0x00); //0x1000//1400 Set VDV[4:0] for VCOM amplitude 1A00
LCD_Write_Com(0x00,0x29); LCD_Write_Data(0x00,0x27); //0x0012 //001a Set VCM[5:0] for VCOMH //0x0025 0034
LCD_Write_Com(0x00,0x2B); LCD_Write_Data(0x00,0x0D); // Set Frame Rate 000C
_delay_ms(50); // Delay 50ms
LCD_Write_Com(0x00,0x20); LCD_Write_Data(0x00,0x00); // GRAM horizontal Address
LCD_Write_Com(0x00,0x21); LCD_Write_Data(0x00,0x00); // GRAM Vertical Address
// ----------- Adjust the Gamma Curve ----------//
LCD_Write_Com(0x00,0x30); LCD_Write_Data(0x00,0x00);
LCD_Write_Com(0x00,0x31); LCD_Write_Data(0x07,0x07);
LCD_Write_Com(0x00,0x32); LCD_Write_Data(0x03,0x07);
LCD_Write_Com(0x00,0x35); LCD_Write_Data(0x02,0x00);
LCD_Write_Com(0x00,0x36); LCD_Write_Data(0x00,0x08);//0207
LCD_Write_Com(0x00,0x37); LCD_Write_Data(0x00,0x04);//0306
LCD_Write_Com(0x00,0x38); LCD_Write_Data(0x00,0x00);//0102
LCD_Write_Com(0x00,0x39); LCD_Write_Data(0x07,0x07);//0707
LCD_Write_Com(0x00,0x3C); LCD_Write_Data(0x00,0x02);//0702
LCD_Write_Com(0x00,0x3D); LCD_Write_Data(0x1D,0x04);//1604

//------------------ Set GRAM area ---------------//
LCD_Write_Com(0x00,0x50); LCD_Write_Data(0x00,0x00); // Horizontal GRAM Start Address
LCD_Write_Com(0x00,0x51); LCD_Write_Data(0x00,0xEF); // Horizontal GRAM End Address
LCD_Write_Com(0x00,0x52); LCD_Write_Data(0x00,0x00); // Vertical GRAM Start Address
LCD_Write_Com(0x00,0x53); LCD_Write_Data(0x01,0x3F); // Vertical GRAM Start Address
LCD_Write_Com(0x00,0x60); LCD_Write_Data(0xA7,0x00); // Gate Scan Line
LCD_Write_Com(0x00,0x61); LCD_Write_Data(0x00,0x01); // NDL,VLE, REV
LCD_Write_Com(0x00,0x6A); LCD_Write_Data(0x00,0x00); // set scrolling line
//-------------- Partial Display Control ---------//
LCD_Write_Com(0x00,0x80); LCD_Write_Data(0x00,0x00);
LCD_Write_Com(0x00,0x81); LCD_Write_Data(0x00,0x00);
LCD_Write_Com(0x00,0x82); LCD_Write_Data(0x00,0x00);
LCD_Write_Com(0x00,0x83); LCD_Write_Data(0x00,0x00);
LCD_Write_Com(0x00,0x84); LCD_Write_Data(0x00,0x00);
LCD_Write_Com(0x00,0x85); LCD_Write_Data(0x00,0x00);
//-------------- Panel Control -------------------//
LCD_Write_Com(0x00,0x90); LCD_Write_Data(0x00,0x10);
LCD_Write_Com(0x00,0x92); LCD_Write_Data(0x06,0x00);
LCD_Write_Com(0x00,0x07); LCD_Write_Data(0x01,0x33); // 262K color and display ON

CS_1; //关闭片选使能
}

void Pant(char VH, char VL)
{
int i, j;
CS_0; //打开片选使能
Address_set(0,0,240,320);
for(i = 0; i < 320; i++)
{
for (j = 0; j < 240; j++)
{
LCD_Write_Data(VH, VL);
}
}
CS_1; //关闭片选使能
}

int main(void)
{
LCD_Port_Init(); //TFT端口初始化
LCD_Init(); //TFT初始化
Pant(0xff, 0xff); //TFT清屏
while(1)
{
Pant(0xF8, 0x00); //红色
_delay_ms(2000);
Pant(0x07, 0xE0); //红色
_delay_ms(2000);
Pant(0x00, 0x1F); //红色
_delay_ms(2000);
}
}

turf456 · 发表于 2010-10-3 02:37:33

如果用PORTC了别忘了禁用JTAG，好多人卡在这里了。
坛子里的程序大把大把，能搜到。改一下端口基本都好使

turf456 · 发表于 2010-10-3 02:41:12

这是我以前做过的。初始化成功后就是定义区域然后写像素了。基本就是这些。

(原文件名:ourdev_575061.jpg)

e1909 · 发表于 2010-10-3 10:09:59

有没有ILI9325的中文资料，网上搜到的全都是英文的，看不懂，我主要是想看懂初始化tft的细节，深入研究一下

e1909 · 发表于 2010-10-3 13:32:40

回复【1楼】zywh
-----------------------------------------------------------------------

做出来了，太感谢你了

turf456 · 发表于 2010-10-3 16:06:46

这些资料没多少是英文的。你找一些关键的就行了，比如扫描方向等，看图就明白了

e1909 · 发表于 2010-10-3 21:11:06

找到了一部分中文翻译，剩下的麻烦大家再找下

点击此处下载 ourdev_587362FP3A29.rar(文件大小:2.33M) (原文件名:ILI9325.rar)

adai · 发表于 2010-10-4 21:51:15

mark

zywh · 发表于 2010-10-4 22:09:23

回复【3楼】turf456
-----------------------------------------------------------------------

好像你的屏幕跟我的是一样的哦。。。是不是都是淘宝买的58块钱的啊？？？
请问显示一张图片。。。单片机的内存太小。。。是不是得通过sd卡读取啊？？？？

XA144F · 发表于 2010-10-4 22:25:05

LZ做的不错，但是显示那样的图片就是大错特错了！至少是苍老师的才行啊！

e1909 · 发表于 2010-10-4 22:38:07

回复【9楼】zywh
-----------------------------------------------------------------------

我买的是35元的屏，2.4寸，只是一个单屏，没带触摸屏控制芯片和tf卡插口，我用的是mega16芯片控制，ram为1k字节，一幅240X320大小的图片大小为240*320*2=150k字节（一个像素为两个字节），远远不够显示一幅图片，所以必需要用tf卡，我这几天正在研究用tf卡显示图片，研究了几天了，还挺麻烦，不过在屏幕上显示各种颜色还是挺简单的，你可以先试试

fengyuganyu · 发表于 2010-10-5 00:16:08

我用的M128做的读SD卡里的二进制文件显示，好像坛子里有做直接读bmp文件的文件系统，可以参阅

turf456 · 发表于 2010-10-5 01:45:20

回复【9楼】zywh
回复【3楼】turf456
-----------------------------------------------------------------------
好像你的屏幕跟我的是一样的哦。。。是不是都是淘宝买的58块钱的啊？？？
请问显示一张图片。。。单片机的内存太小。。。是不是得通过sd卡读取啊？？？？
-----------------------------------------------------------------------

必须用sd卡，一张16位的320*240的bmp图片时160K。

turf456 · 发表于 2010-10-5 01:47:09

回复【11楼】e1909
回复【9楼】zywh
-----------------------------------------------------------------------
我买的是35元的屏，2.4寸，只是一个单屏，没带触摸屏控制芯片和tf卡插口，我用的是mega16芯片控制，ram为1k字节，一幅240x320大小的图片大小为240*320*2=150k字节（一个像素为两个字节），远远不够显示一幅图片，所以必需要用tf卡，我这几天正在研究用tf卡显示图片，研究了几天了，还挺麻烦，不过在屏幕上显示各种颜色还是挺简单的，你可以先试试
-----------------------------------------------------------------------

加油吧，我研究SD卡都快哭了才成功的。
还有fat32文件系统，看懂容易写起来超级费脑细胞

zywh · 发表于 2010-10-5 15:57:42

回复【14楼】turf456
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正在看振南的sd卡的视频教程。。。呵呵。。。。我也要加油学习咯。。。哈哈。。。

gxy508 · 发表于 2010-10-5 16:03:57

mark

cuikai12345 · 发表于 2010-10-7 18:18:12

mark

aajie777 · 发表于 2010-11-1 01:56:32

天了，太难了，我也想学这个，但现在还一头乌水。。。。只看明白了你作品中的图片！！

lanbin · 发表于 2011-6-1 13:28:31

MARK
看到3楼，我有些想吐了

chenxingye · 发表于 2011-6-1 15:44:31

记录下

laohuang868 · 发表于 2011-7-5 14:46:25

谢谢，学习了，原来是我的CS信号有问题！

ccmj4708 · 发表于 2011-7-7 14:13:02

mark

lyi619 · 发表于 2011-8-9 16:08:31

回复【21楼】laohuang868
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你怎么看出来哪个信号有问题的？

WinLiu · 发表于 2011-10-21 20:31:43

mark

longfeix86 · 发表于 2011-10-22 10:35:31

ILI9325+M16+IAR用起来很爽的

mingqiang · 发表于 2012-10-12 17:08:15

参照2楼的c程序，改写成了16位数据模式汇编程序的，端口有点变化，已经驱动成功。
; Target : ATMega16
; Crystal: 4.0000Mhz
; 16位数据模式，全屏循环刷成红色，绿色，蓝色。
;
.include "m16def.inc"

;-------------------I/O定义----------
.equ lcd_dataport_h =portc ;高8位数据口，8位模式下只使用高8位
.equ lcd_datapin_h  =pinc
.equ lcd_dataddr_h  =ddrc
.equ lcd_dataport_l =porta ;低8位数据口
.equ lcd_datapin_l  =pina
.equ lcd_dataddr_l  =ddra

.equ lcd_ctrl    =portd
.equ lcd_ctrl_ddr =ddrd
.equ lcd_rs    =pd3
.equ lcd_wr    =pd4
.equ lcd_rd    =pd5
.equ lcd_cs    =pd6
.equ lcd_rest    =pd7

;-------------------工作寄存器定义----------
.def temp0       =r16
.def temp1       =r17
.def temp2       =r18
.def temp3       =r19
.def temp4       =r20
.def temp5       =r21
.def temp6       =r22
.def temp7       =r23
.def temp8       =r24
.def temp9       =r25
.def tempa       =r26
.def tempb       =r27

.org $0000
jmp reset    ;复位

reti          ;IRQ0 中断向量
nop
reti          ;IRQ1 中断向量
nop
reti          ;Time2 比较中断向量
nop
reti          ;Time2 溢出中断向量
nop
reti          ;Time1 捕捉中断向量
nop
reti          ;Time1 比较A中断向量
nop
reti          ;Time1 比较B中断向量
nop
reti          ;Time1 溢出中断向量
nop
reti          ;Time0 溢出中断向量
nop
reti          ;SPI 传输结束中断向量
nop
reti          ;USART RX结束中断向量
nop
reti          ;UDR 空中断向量
nop
reti          ;USART TX结束中断向量
nop
reti          ;ADC 转换结束中断向量
nop
reti          ;EEPROM就绪
nop
reti          ;模拟比较器中断向量
nop
reti          ;两线串行接口中断向量
nop
reti          ;IRQ2 中断向量
nop
reti          ;Time0 比较中断向量
nop
reti          ;SPM 就绪中断向量
nop

.org $002A
reset:
ldi temp0,low(ramend)    ;设置堆栈指针
out spl,temp0
ldi temp0,high(ramend)
out sph,temp0

rcall lcd_port_init       ;端口初始化
rcall lcd_init             ;lcd初始化

ser tempa                ;清屏
ser tempb
rcall pant

scan:
ldi tempa,0xf8          ;红色
ldi tempb,0x00
rcall pant
rcall delay_2000ms

ldi tempa,0x07          ;绿色
ldi tempb,0xe0
rcall pant
rcall delay_2000ms

ldi tempa,0x00          ;蓝色
ldi tempb,0x1f
rcall pant
rcall delay_2000ms
rjmp scan

;*************端口初始化*************
lcd_port_init:
ser temp0
out lcd_dataddr_h,temp0 ;高8位为输出
out lcd_dataddr_l,temp0 ;低8位为输出
ldi temp0,(1<<lcd_rs)|(1<<lcd_wr)|(1<<lcd_rd)|(1<<lcd_cs)|(1<<lcd_rest)
out lcd_ctrl_ddr,temp0 ;5个控制位为输出
ret

;*************16位并行数据写入函数*************
;temp0存高8位数据，temp1存低8位数据
lcd_write_bus:
out lcd_dataport_h,temp0
out lcd_dataport_l,temp1
cbi lcd_ctrl,lcd_wr    ;wr=0
sbi lcd_ctrl,lcd_wr    ;wr=1
ret

;*************发送命令*************
;temp0存高8位，temp1存低8位
lcd_write_com:
cbi lcd_ctrl,lcd_rs    ;cs=0
rcall lcd_write_bus
ret

;*************发送数据*************
;temp0存高8位，temp1存低8位
lcd_write_data:
sbi lcd_ctrl,lcd_rs    ;cs=1
rcall lcd_write_bus
ret

;*************设置X,Y坐标*************
;temp2存x1坐标高8位，temp3存x1坐标低8位，temp4存y1坐标高8位，temp5存y1坐标低8位
;temp6存x2坐标高8位，temp7存x2坐标低8位，temp8存y2坐标高8位，temp9存y2坐标低8位
address_set:
ldi temp0,0x00       ;设置X坐标位置
ldi temp1,0x20
rcall lcd_write_com
mov temp0,temp2
mov temp1,temp3
rcall lcd_write_data

ldi temp0,0x00       ;设置Y坐标位置
ldi temp1,0x21
rcall lcd_write_com
mov temp0,temp4
mov temp1,temp5
rcall lcd_write_data

ldi temp0,0x00       ;开始X
ldi temp1,0x50
rcall lcd_write_com
mov temp0,temp2
mov temp1,temp3
rcall lcd_write_data

ldi temp0,0x00       ;开始Y
ldi temp1,0x52
rcall lcd_write_com
mov temp0,temp4
mov temp1,temp5
rcall lcd_write_data

ldi temp0,0x00       ;结束X
ldi temp1,0x51
rcall lcd_write_com
mov temp0,temp6
mov temp1,temp7
rcall lcd_write_data

ldi temp0,0x00       ;结束Y
ldi temp1,0x53
rcall lcd_write_com
mov temp0,temp8
mov temp1,temp9
rcall lcd_write_data

ldi temp0,0x00
ldi temp1,0x22
rcall lcd_write_com
ret

;*************延时5ms(temp0,temp1,temp2)*************
delay_5ms:
ldi temp0,1
ldi temp1,0
Delay5:
subi temp0,255    ;加1操作
sbci temp1,255
cpi temp0,0x29    ;0x29
ldi temp2,0x0b    ;0x0b29 = 2857
cpc temp1,temp2
brlo Delay5       ;未达2857继续
ret

;*************延时50ms(temp0,temp1,temp2)*************
delay_50ms:
ldi temp0,1
ldi temp1,0
Delay50:
subi temp0,255
sbci temp1,255
cpi temp0,0x9b
ldi temp2,0x6f
cpc temp1,temp2
brlo Delay50
ret

;*************延时2000ms(temp0,temp1,temp2，temp3)*************
delay_2000ms:
clr temp3
Delay2000:
rcall delay_50ms
inc temp3
cpi temp3,40
brlo Delay2000
ret
;*************LCD初始化*************
lcd_init:
sbi lcd_ctrl,lcd_rest ;rest=1
rcall delay_5ms
cbi lcd_ctrl,lcd_rest ;rest=0
rcall delay_5ms
sbi lcd_ctrl,lcd_rest ;rest=1
sbi lcd_ctrl,lcd_cs    ;cs=1
sbi lcd_ctrl,lcd_rd    ;rd=1
sbi lcd_ctrl,lcd_wr    ;wr=1

rcall delay_5ms

cbi lcd_ctrl,lcd_cs    ;cs=0,打开片选使能

;--------------Start Initial Sequence--------------
ldi temp0,0x00       ;
ldi temp1,0xe5
rcall lcd_write_com
ldi temp0,0x78
ldi temp1,0xf0
rcall lcd_write_data

ldi temp0,0x00       ;set SS and SM bit
ldi temp1,0x01
rcall lcd_write_com
ldi temp0,0x01
ldi temp1,0x00
rcall lcd_write_data

ldi temp0,0x00       ;set 1 line inversion
ldi temp1,0x02
rcall lcd_write_com
ldi temp0,0x07
ldi temp1,0x00
rcall lcd_write_data

ldi temp0,0x00       ;set GRAM write direction and BGR=1
ldi temp1,0x03
rcall lcd_write_com
ldi temp0,0x10
ldi temp1,0x30
rcall lcd_write_data

ldi temp0,0x00       ;Resize register
ldi temp1,0x04
rcall lcd_write_com
ldi temp0,0x00
ldi temp1,0x00
rcall lcd_write_data

ldi temp0,0x00       ;set the back porch and front porch
ldi temp1,0x08
rcall lcd_write_com
ldi temp0,0x02
ldi temp1,0x07
rcall lcd_write_data

ldi temp0,0x00       ;set non-display area refresh cycle ISC[3:0]
ldi temp1,0x09
rcall lcd_write_com
ldi temp0,0x00
ldi temp1,0x00
rcall lcd_write_data

ldi temp0,0x00       ;FMARK function
ldi temp1,0x0a
rcall lcd_write_com
ldi temp0,0x00
ldi temp1,0x00
rcall lcd_write_data

ldi temp0,0x00       ;RGB interface setting
ldi temp1,0x0c
rcall lcd_write_com
ldi temp0,0x00
ldi temp1,0x00
rcall lcd_write_data

ldi temp0,0x00       ;Frame marker Position
ldi temp1,0x0d
rcall lcd_write_com
ldi temp0,0x00
ldi temp1,0x00
rcall lcd_write_data

ldi temp0,0x00       ;RGB interface polarity
ldi temp1,0x0f
rcall lcd_write_com
ldi temp0,0x00
ldi temp1,0x00
rcall lcd_write_data

;--------------Power On sequence --------------
ldi temp0,0x00       ;SAP, BT[3:0], AP, DSTB, SLP, STB
ldi temp1,0x10
rcall lcd_write_com
ldi temp0,0x00
ldi temp1,0x00
rcall lcd_write_data

ldi temp0,0x00       ;DC1[2:0], DC0[2:0], VC[2:0]
ldi temp1,0x11
rcall lcd_write_com
ldi temp0,0x00
ldi temp1,0x07
rcall lcd_write_data

ldi temp0,0x00       ;VREG1OUT voltage
ldi temp1,0x12
rcall lcd_write_com
ldi temp0,0x00
ldi temp1,0x00
rcall lcd_write_data

ldi temp0,0x00       ;VDV[4:0] for VCOM amplitude
ldi temp1,0x13
rcall lcd_write_com
ldi temp0,0x00
ldi temp1,0x00
rcall lcd_write_data

ldi temp0,0x00
ldi temp1,0x07
rcall lcd_write_com
ldi temp0,0x00
ldi temp1,0x01
rcall lcd_write_data

rcall delay_50ms    ;200ms的延时
rcall delay_50ms
rcall delay_50ms
rcall delay_50ms

ldi temp0,0x00       ;
ldi temp1,0x10
rcall lcd_write_com
ldi temp0,0x10
ldi temp1,0x90
rcall lcd_write_data

ldi temp0,0x00       ;
ldi temp1,0x11
rcall lcd_write_com
ldi temp0,0x02
ldi temp1,0x27
rcall lcd_write_data

rcall delay_50ms

ldi temp0,0x00       ;
ldi temp1,0x12
rcall lcd_write_com
ldi temp0,0x00
ldi temp1,0x1f
rcall lcd_write_data

rcall delay_50ms

ldi temp0,0x00
ldi temp1,0x13
rcall lcd_write_com
ldi temp0,0x15
ldi temp1,0x00
rcall lcd_write_data

ldi temp0,0x00
ldi temp1,0x29
rcall lcd_write_com
ldi temp0,0x00
ldi temp1,0x27
rcall lcd_write_data

ldi temp0,0x00
ldi temp1,0x2b
rcall lcd_write_com
ldi temp0,0x00
ldi temp1,0x0d
rcall lcd_write_data

rcall delay_50ms

ldi temp0,0x00
ldi temp1,0x20
rcall lcd_write_com
ldi temp0,0x00
ldi temp1,0x00
rcall lcd_write_data

ldi temp0,0x00
ldi temp1,0x21
rcall lcd_write_com
ldi temp0,0x00
ldi temp1,0x00
rcall lcd_write_data

;----------- Adjust the Gamma Curve ----------
ldi temp0,0x00
ldi temp1,0x30
rcall lcd_write_com
ldi temp0,0x00
ldi temp1,0x00
rcall lcd_write_data

ldi temp0,0x00
ldi temp1,0x31
rcall lcd_write_com
ldi temp0,0x07
ldi temp1,0x07
rcall lcd_write_data

ldi temp0,0x00
ldi temp1,0x32
rcall lcd_write_com
ldi temp0,0x03
ldi temp1,0x07
rcall lcd_write_data

ldi temp0,0x00
ldi temp1,0x35
rcall lcd_write_com
ldi temp0,0x02
ldi temp1,0x00
rcall lcd_write_data

ldi temp0,0x00
ldi temp1,0x36
rcall lcd_write_com
ldi temp0,0x00
ldi temp1,0x08
rcall lcd_write_data

ldi temp0,0x00
ldi temp1,0x37
rcall lcd_write_com
ldi temp0,0x00
ldi temp1,0x04
rcall lcd_write_data

ldi temp0,0x00
ldi temp1,0x38
rcall lcd_write_com
ldi temp0,0x00
ldi temp1,0x00
rcall lcd_write_data

ldi temp0,0x00
ldi temp1,0x39
rcall lcd_write_com
ldi temp0,0x07
ldi temp1,0x07
rcall lcd_write_data

ldi temp0,0x00
ldi temp1,0x3c
rcall lcd_write_com
ldi temp0,0x00
ldi temp1,0x02
rcall lcd_write_data

ldi temp0,0x00
ldi temp1,0x3d
rcall lcd_write_com
ldi temp0,0x1d
ldi temp1,0x04
rcall lcd_write_data

;------------------ Set GRAM area ---------------
ldi temp0,0x00
ldi temp1,0x50
rcall lcd_write_com
ldi temp0,0x00
ldi temp1,0x00
rcall lcd_write_data

ldi temp0,0x00
ldi temp1,0x51
rcall lcd_write_com
ldi temp0,0x00
ldi temp1,0xef
rcall lcd_write_data

ldi temp0,0x00
ldi temp1,0x52
rcall lcd_write_com
ldi temp0,0x00
ldi temp1,0x00
rcall lcd_write_data

ldi temp0,0x00
ldi temp1,0x53
rcall lcd_write_com
ldi temp0,0x01
ldi temp1,0x3f
rcall lcd_write_data

ldi temp0,0x00
ldi temp1,0x60
rcall lcd_write_com
ldi temp0,0xa7
ldi temp1,0x00
rcall lcd_write_data

ldi temp0,0x00
ldi temp1,0x61
rcall lcd_write_com
ldi temp0,0x00
ldi temp1,0x01
rcall lcd_write_data

ldi temp0,0x00
ldi temp1,0x6a
rcall lcd_write_com
ldi temp0,0x00
ldi temp1,0x00
rcall lcd_write_data

;-------------- Partial Display Control ---------
ldi temp0,0x00
ldi temp1,0x80
rcall lcd_write_com
ldi temp0,0x00
ldi temp1,0x00
rcall lcd_write_data

ldi temp0,0x00
ldi temp1,0x81
rcall lcd_write_com
ldi temp0,0x00
ldi temp1,0x00
rcall lcd_write_data

ldi temp0,0x00
ldi temp1,0x82
rcall lcd_write_com
ldi temp0,0x00
ldi temp1,0x00
rcall lcd_write_data

ldi temp0,0x00
ldi temp1,0x83
rcall lcd_write_com
ldi temp0,0x00
ldi temp1,0x00
rcall lcd_write_data

ldi temp0,0x00
ldi temp1,0x84
rcall lcd_write_com
ldi temp0,0x00
ldi temp1,0x00
rcall lcd_write_data

ldi temp0,0x00
ldi temp1,0x85
rcall lcd_write_com
ldi temp0,0x00
ldi temp1,0x00
rcall lcd_write_data

;-------------- Panel Control -------------------
ldi temp0,0x00
ldi temp1,0x90
rcall lcd_write_com
ldi temp0,0x00
ldi temp1,0x10
rcall lcd_write_data

ldi temp0,0x00
ldi temp1,0x92
rcall lcd_write_com
ldi temp0,0x06
ldi temp1,0x00
rcall lcd_write_data

ldi temp0,0x00
ldi temp1,0x07
rcall lcd_write_com
ldi temp0,0x01
ldi temp1,0x33
rcall lcd_write_data

sbi lcd_ctrl,lcd_cs    ;关闭片选使能

ret

;-------------------扫描LCD----------
;tempa,tempb
pant:
cbi lcd_ctrl,lcd_cs
ldi temp2,0
ldi temp3,0
ldi temp4,0
ldi temp5,0
ldi temp6,0
ldi temp7,240
ldi temp8,1
ldi temp9,64
rcall address_set

clr temp8
clr temp9
Yd:
clr temp2
Xd:
mov temp0,tempa
mov temp1,tempb
rcall lcd_write_data
inc temp2
cpi temp2,240
brlo Xd
adiw temp8,1
cpi temp9,1
brlo Yd
cpi temp8,64
brlo Yd
sbi lcd_ctrl,lcd_cs
ret

mingqiang · 发表于 2012-10-16 16:09:27

发现了一个问题，开窗口的时候结束X不是240，而应该是239，结束Y不是320，而应该是319，当然窗口开成整屏的时候不会出错，因为屏幕本来就没有那么大。我用点阵显示8X16字符的时候，开窗口的时候开始X为0，开始Y为0，结束X为8，结束Y为16，结果显示不对，卡了我好久，最后才发觉应该是（0，0，7，15）。

zuolaosan · 发表于 2012-12-18 16:56:54

请问8位控制怎么控制，

MEGA16L单片机驱动2.4寸tft，控制芯片为ILI9325

阿莫论坛20周年了！感谢大家的支持与爱护！！