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今天完成了320X240液晶屏的測試，先上個效果圖，然后上程序。
這是我的測試環境：
這個是圖形模式：
再上個文字模式：
350大洋呀，在單色屏里這是我玩的最貴的屏了.
我把程序放到另一個文章中吧，因為比較多。一個主文件，一個頭文件，大家用的時候看一下，不要復雜然后不能用，再來罵我。
用這個屏比較討厭的地方就是，如果程序不對了，調節對比度的電位器是沒反應的，不知道別人用過的屏是不是這個樣子的。電位器中間接VO，一端接VOUT,另外一端接地。INT和BUSY腳沒接。來了背光，屏的工作電流在250mA左右，挺大的。
- 主程序（RA8803.C）：
- /****************************************************
- 圖片橫向取模
- *********************************************************/
- #include <reg52.h>
- #include <driver.h>
- code uchar s1[]={"320X240液晶驅動"};
- code uchar s2[]={"-- RA8803控制器 Crasyboye"};
- code uchar s3[]={"RA8803是一款雙圖層文字/圖形LCD控制器,"
- "支持320X240，擴展模式可支持640X240和320X480。"
- "RA8803支持屏幕水平卷動及垂直卷動"
- "支持512Byte sRAM可自行造字等等"};
- code uchar s4[]={"本驅動來源于網絡，經修參照資料改后顯示穩定，"
- "可以用來測試采用RA8803控制器的液晶屏，"
- "如轉摘請注明出處:"};
- code uchar s5[]={"http*//hi*baidu*com*crasyboye"};
- /***************************************************
- 函數：void display_NET()
- 功能：網點的顯示,大小四種網點
- ****************************************************/
- void display_NET(uchar s,uchar n)
- {
- lcd_cmdwrite(0x00,0xc5); //圖形顯示模式
- lcd_cursorxy(0,0);
- for(i=0;i<240;i++) //行畫點控制
- {
- for(j=0;j<40;j++) //同時進行8列
- {
- if(n==1)lcd_datawrite(s);
- if(n==2) lcd_datawrite(s);
- if(n==4)lcd_datawrite(s);
- if(n==8)
- if(j%2)lcd_datawrite(s);
- else lcd_datawrite(~s);
- }
- if(n==1) s=~s;
- if(n==2) if((i)%2) s=~s;
- if(n==4) if((i+1)%4==0) s=~s;
- if(n==8) if((i+1)%8==0) s=~s;
- }
- }
- /*************************************************
- 主程序
- ***************************************************/
- void main(void)
- {
- delay(10);
- lcd_Initial();
- while(1)
- {
- lcd_clear();
- display_NET(0x0f,4);
- DelayKey(1,4);
- lcd_clear();
- display_NET(0x00,8);
- DelayKey(1,4);
- lcd_clear();
- lcd_clear();
- lcd_cursorxy(5,10);
- display_Bstring(s1);
- lcd_cursorxy(7,50);
- display_string(s2);
- lcd_cursorxy(4,74);
- display_string(s3);
- lcd_cursorxy(4,145);
- display_string(s4);
- lcd_cursorxy(4,200);
- display_string(s5);
- DelayKey(1,4);
- }
- }
- 頭文件（driver.h）：
- #ifndef _driver_h
- #define _driver_h
- #define uchar unsigned char
- #define uint unsigned int
- #define x 320
- #define y 240
- #define xy (x/8)*y
- sbit lcd_RS= P3^1; //A0
- sbit lcd_WR= P3^4;
- sbit lcd_RD= P3^3;
- sbit lcd_CS= P3^2 ; //CE27
- sbit lcd_RES= P3^0;
- #define lcd_data P0
- sbit key= P3^4; //用來定住顯示的
- uint i,j;
- void melay(unsigned int MS)
- {
- unsigned char us,usn;
- while(MS!=0)
- {
- usn = 2; //for 12M
- while(usn!=0)
- {
- us=0xf6;
- while (us!=0){us--;};
- usn--;
- }
- MS--;
- }
- }
- void DelayKey(unsigned int Second , unsigned int MS100)
- { //輸入精確到0.1S,是用,
- unsigned int i;
- for(i=0;i<Second*100+MS100;i++)
- {
- if(key==0)
- {
- melay(20);
- while(key==0) melay(100);
- break;
- }
- else melay(50);
- }
- }
- /**********************************************
- 函數：void delay(uint t)
- 功能：延時微秒的設定
- **************************************************/
- void delay(uint t)
- {
- while(t--);
- }
- /**************************************************
- 函數：void lcd_cmdwrite (uchar cmdx , uchar cmdy)
- 功能：在指定的寄存器寫下命令
- ********************************************************/
- void lcd_cmdwrite (uchar cmdx , uchar cmdy)
- {
- lcd_data=cmdx;
- lcd_CS=0;
- lcd_RD=1;
- lcd_RS=0;
- lcd_WR=0;
- lcd_WR=1;
- lcd_RS=1;
- lcd_CS=1;
-
- lcd_data=cmdy;
- lcd_CS=0;
- lcd_RD=1;
- lcd_RS=0;
- lcd_WR=0;
- lcd_WR=1;
- lcd_RS=1;
- lcd_CS=1;
- }
- /*************************************************
- 函數：void lcd_datawrite(unsigned char datax)
- 功能：寫下顯示的數據
- *****************************************************/
- void lcd_datawrite(unsigned char datax)
- {
- lcd_data=datax;
- lcd_CS=0;
- lcd_RD=1;
- lcd_RS=1;
- lcd_WR=0;
- lcd_WR=1;
- lcd_RS=0;
- lcd_CS=1;
- }
- /****************************************************
- 函數：uchar lcd_cmdread(unsigned char cmdx)
- 功能：讀回一個值
- *********************************************************/
- uchar lcd_cmdread(uchar cmdx)
- {
- uchar address_cmd;
- lcd_data=cmdx;
- lcd_CS=0;
- lcd_RD=1;
- lcd_RS=0;
- lcd_WR=0;
- lcd_WR=1;
- lcd_RS=1;
- lcd_CS=1;
- lcd_data=0xff;
- lcd_CS=0;
- lcd_WR=1;
- lcd_RS=0;
- lcd_RD=0;
- address_cmd=lcd_data;
- lcd_RD=1;
- lcd_RS=1;
- lcd_CS=1;
- return(address_cmd);
- }
- /******************************************************
- 函數：void lcd_Initial(void)
- 功能：初始化好多寄存器
- **********************************************************/
- void lcd_Initial(void)
- {
- lcd_cmdwrite(0x00,0xcd); //WLCR 正常模式；文字模式；屏幕開啟；不閃爍；不反白；
- lcd_cmdwrite(0x01,0x03); //MISC 系統頻率選擇：8M
- lcd_cmdwrite(0x02,0x10); //APSR
- lcd_cmdwrite(0x03,0x80); //ADSR 平移方向動控制
- lcd_cmdwrite(0x10,0x6b); //WCCR 正常顯示，不加粗
- lcd_cmdwrite(0x12,0xb3); //MAMR
- lcd_cmdwrite(0x20,0x27); //AWRR
- lcd_cmdwrite(0x30,0xef); //AWBR
- lcd_cmdwrite(0x40,0x00); //AWLR
- lcd_cmdwrite(0x50,0x00); //AWTR
- lcd_cmdwrite(0x21,0x27); //DWRR
- lcd_cmdwrite(0x31,0xef); //DWBR
- lcd_cmdwrite(0x41,0x00); //DWLR
- lcd_cmdwrite(0x51,0x00); //DWTR
- lcd_cmdwrite(0x60,0x00); //CPXR
- lcd_cmdwrite(0x61,0x00); //BGSG
- lcd_cmdwrite(0x70,0x00); //CPYR
- lcd_cmdwrite(0x71,0x00); //BGCM
- lcd_cmdwrite(0x72,0xef); //EDCM
- lcd_cmdwrite(0x90,0x09); //SCCR
- lcd_cmdwrite(0xc0,0xc8); //TPCR
- lcd_cmdwrite(0xc1,0x3a); //TPSR
- lcd_cmdwrite(0xc8,0x80); //TPXR
- lcd_cmdwrite(0xc9,0x80); //TPYR
- lcd_cmdwrite(0xca,0x00); //TPZR
- lcd_cmdwrite(0xd0,0x0f); //LCCR
- lcd_cmdwrite(0xe0,0x00); //PNTR
- lcd_cmdwrite(0xf0,0xa0); //FNCR
- lcd_cmdwrite(0xf1,0x0f); //FVHT 字體不放大
- }
- /*****************************************************
- 函數：void lcd_clear()
- 功能：清除內存
- ********************************************************/
- void lcd_clear()
- {
- uchar reg;
- lcd_cmdwrite(0xe0,0x00);
- reg = lcd_cmdread(0xf0);
- reg &=0xf7;
- reg |=0x08;
- lcd_cmdwrite(0xf0,reg);
- delay(300);
- }
- /******************************************************
- 函數：void lcd_cursorxy(unsigned int xn,unsigned int yn)
- 功能：設定要顯示數據的地址
- **********************************************************/
- void lcd_cursorxy(uint xn,uint yn)
- {
- lcd_cmdwrite(0x60,xn);
- lcd_cmdwrite(0x70,yn);
- }
- /***********************************************
- 函數：void lcd_showbig(uchar *text,uint xn)
- 功能：顯示字符，漢字
- ******************************************************/
- void display_string(uchar *text)
- {
- lcd_cmdwrite(0x00,0xcd);
- lcd_cmdwrite(0xf1,0x0f); //不放大
- while(*text != '\0')
- {
- lcd_datawrite(*text);
- ++text;
- }
- }
- void display_Bstring(uchar *text)
- {
- lcd_cmdwrite(0x00,0xcd);
- lcd_cmdwrite(0xf1,0x5f); //放大一倍
- while(*text != '\0')
- {
- lcd_datawrite(*text);
- ++text;
- }
- }
- /***********************************************
- 函數：void display_img(uchar code *p)
- 功能：顯示一幅320*240的完美圖片,但分正顯和反顯
- 顯示，我用的S52，放不下了。
- ***********************************************
- void display_img(uchar code *p,bit c)
- {
- lcd_cmdwrite(0x00,0xc5);
- lcd_cursorxy(0,0);
- for(i=0;i<xy;i++)
- {
- if(c)lcd_datawrite(p[i]); //320*240
- else lcd_datawrite(~p[i]);
- }
- }
- */
- #endif
-
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