嵌入式优秀课程设计电子词典硬件设计.doc

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上海电力学院嵌入式系统课程设计汇报题　　目：电子词典设计姓名：学号：院　　系：　　专业年级：　同组组员：　年　月　日一、试验内容及要求在LCD屏幕左侧绘制出单词输入框和释义显示框和一个搜索键，右侧绘制4*4键盘按钮，模拟出简易电子词典功效，按钮操作用触摸屏或键盘实现均可。实现功效：（1）LCD屏幕上显示4*4键盘，显示单词及其翻译、例句。（2）一个键可完成2个英文字母输入，如左上角第一个键可实现输入a,b两个字母，第一次按下时为输入a，假如需输入b，只需连续快速按键两次即可。（3）在输入完单词后，点击搜索键，即可在释义显示框中显示该单词词性、汉字解释、示例词组和句子等。（4）当发觉输入单词在库中不存在时，可实现将该单词添加入库操作。二、设计思绪（1）经过LCD显示模块画出电子词典操作界面。（2）对应界面中各键位置设置键盘对应键值。（3）设定功效键，实现以下3个功效：①退格键：删除最终一位字母；②搜索∕保留键：对输入框单词进行判定，若单词存在于词库中，则显示单词词性、词义、例句；若单词不存在则自动进行保留；③转换键：按下后，字母键输出对应第二个字母。（4）按键后赋值并显示。三、软件构架开始 LCD模块键盘模块结束四、模块分析（1）键盘模块步骤图：开始键盘初始化键盘是否按下 Y 读取键值是否是功效键 Y N 实施功效赋值显示结束 N 源代码：/********************************************************************************************* * File： keyboard.c * Author: embest * Desc： keyboard source code * History: *********************************************************************************************/ /*--- include files ---*/ #include "44b.h" #include "44blib.h" #include "def.h" #include "keyboard.h" #include "lcd.h" #include "dict.h" #ifndef KEY_INT #define KEY_INT #endif #ifndef BUT_INT #define BUT_INT #endif /*--- global variables ---*/ int input_char,n=0; char word[20]; int wordIndex=0; int x = 15; int num=0; int counter=0; /* keyboard control address */ volatile UCHAR *keyboard_base = (UCHAR *)0x06000000; /*--- function declare ---*/ void init_keyboard(); void close_keyboard(); void KeyboardInt(void);// __attribute__ ((interrupt ("IRQ"))); void Eint4567Isr(void);// __attribute__ ((interrupt ("IRQ"))); /*--- function code ---*/ /********************************************************************************************* * name: Test_Keyboard * func: test keyboard * para: none * ret: none * modify: * comment: ********************************************************************************************/ void Test_Keyboard() { Uart_Printf("\n Keyboard Test Example\n"); Uart_Printf("\n Please press one key on keyboard and look at LED ...\n"); // init keyboard init_keyboard(); while(1); // close keyboard // close_keyboard(); } /********************************************************************************************* * name: init_keyboard * func: init keyboard interrupt * para: none * ret: none * modify: * comment: ********************************************************************************************/ extern void isrEINT1(void); extern void isrEint4567(void); void init_keyboard() { /* enable interrupt */ rINTMOD = 0x0; rINTCON = 0x1; /* set EINT1 interrupt handler */ rINTMSK =~(BIT_GLOBAL|BIT_EINT1|BIT_EINT4567); pISR_EINT1 = (int)isrEINT1; pISR_EINT4567 = (int)isrEint4567; /* PORT G */ rPCONG = 0xffff; // EINT7~0 rPUPG = 0x0; // pull up enable rEXTINT = rEXTINT|0x20; // EINT1 falling edge mode rI_ISPC = BIT_EINT1|BIT_EINT4567; // clear pending bit rEXTINTPND = 0xf; // clear EXTINTPND reg } /********************************************************************************************* * name: close_keyboard * func: close keyboard interrupt * para: none * ret: none * modify: * comment: ********************************************************************************************/ void close_keyboard() { pISR_EINT1 = NULL; pISR_EINT4567 = NULL; /* Mask interrupt */ rINTMSK = rINTMSK | BIT_EINT1 | BIT_EINT4567; } /********************************************************************************************* * name: KeyboardInt * func: keyboard interrupt handler function * para: none * ret: none * modify: * comment: ********************************************************************************************/ void KeyboardInt(void) { int nTemp,i,j,k,m=0; char bbyte; rI_ISPC = BIT_EINT1; // clear pending bit char pbyte[10]; nTemp = key_read(); if(nTemp > -1) { // Lcd_Draw_HLine(10, 310, 80, WHITE, 50); input_char = nTemp; Lcd_DspAscII8x16(15,45,WHITE,word); switch(input_char) { case 0: num=1;break; case 1: num=2;break; case 2: num=3;break; case 3: num=4;break; case 4: num=5;break; case 5: num=6;break; case 6: num=7;break; case 7: num=8;break; case 8: num=9;break; case 9: counter=1;break; case 10: counter=2;break; case 11: counter=3;break; case 12: m=1; Lcd_Draw_HLine(15+n-10, 15+n, 45, WHITE, 16); n-=10; word[wordIndex]='\0'; wordIndex--; break; /*if(n==0) { word[20]=0; wordIndex=0; Lcd_Draw_HLine(10, 310,85, WHITE, 160); }break;*/ case 13: word[wordIndex]='\0'; wordIndex=0; for(i=0;i<20;i++) { if(strcmp(word,vocab[i].c)==0) { j=0; k=i; break; } else j=1; } if(j==0) { //#ifdef Eng_v Lcd_DspAscII8x16(15,40,BLUE,vocab[k].c); Lcd_DspAscII8x16(15,60,BLUE,vocab[k].d); Lcd_DspAscII8x16(15,80,BLUE,vocab[k].f); //#else Lcd_DspHz16(15,100,BLUE,vocab[k].e); //#endif } else { Lcd_DspHz16(15,120,BLUE,"未找到对应单词"); DelayMs(600); Lcd_DspHz16(15,120,WHITE,"未找到对应单词"); } break; case 14: word[wordIndex]='\0'; wordIndex=0; for(i=0;i<20;i++) { if(strcmp(word,vocab[i].c)==0) { j=0; k=i; break; } else j=1; } if(j==0) { //#ifdef Eng_v Lcd_DspAscII8x16(15,40,BLUE,vocab[k].c); Lcd_DspAscII8x16(15,60,BLUE,vocab[k].d); Lcd_DspAscII8x16(15,80,BLUE,vocab[k].f); //#else Lcd_DspHz16(15,100,BLUE,vocab[k].e); //#endif } else { if(20>x>0) { for(i = 0; i < 20; i++) vocab[x].c[i]=word[i]; word[i]='\0'; Lcd_DspAscII8x16(15,40,BLUE,vocab[x].c); x++; } else x=15; //Lcd_DspAscII8x16(15,45,BLUE,word); for(i = 0; i < 20; i++) word[i]='\0'; } break; case 15: //Lcd_Draw_Box(10,40,310,80,GREEN); break; } if(num!=0&&counter!=0) { switch(3*(num-1)+counter-1) { case 0: bbyte='a';break; case 1: bbyte='b';break; case 2: bbyte='c';break; case 3: bbyte='d';break; case 4: bbyte='e';break; case 5: bbyte='f';break; case 6: bbyte='g';break; case 7: bbyte='h';break; case 8: bbyte='i';break; case 9: bbyte='j';break; case 10: bbyte='k';break; case 11: bbyte='l';break; case 12: bbyte='m';break; case 13: bbyte='n';break; case 14: bbyte='o';break; case 15: bbyte='p';break; case 16: bbyte='q';break; case 17: bbyte='r';break; case 18: bbyte='s';break; case 19: bbyte='t';break; case 20: bbyte='u';break; case 21: bbyte='v';break; case 22: bbyte='w';break; case 23: bbyte='x';break; case 24: bbyte='y';break; case 25: bbyte='z';break; case 26: bbyte='y';break; } num=0;counter=0; if(m==0) { word[wordIndex]=bbyte; wordIndex++; //n+=10; } } Lcd_DspAscII8x16(15,210,BLUE,word); // Uart_Printf("Key is:%x \r",input_char); } } /********************************************************************************************* * name: key_read * func: read key value * para: none * ret: key value, -1 -- error * modify: * comment: ********************************************************************************************/ inline int key_read() { int value; char temp; /* read line 1 */ temp = *(keyboard_base+0xfd); /* not 0xF mean key down */ if(( temp & KEY_VALUE_MASK) != KEY_VALUE_MASK) { if( (temp&0x1) == 0 ) value = 3; else if( (temp&0x2) == 0 ) value = 2; else if( (temp&0x4) == 0 ) value = 1; else if( (temp&0x8) == 0 ) value = 0; while(( temp & KEY_VALUE_MASK) != KEY_VALUE_MASK) // release temp = *(keyboard_base+0xfd); return value; } /* read line 2 */ temp = *(keyboard_base+0xfb); /* not 0xF mean key down */ if(( temp & KEY_VALUE_MASK) != KEY_VALUE_MASK) { if( (temp&0x1) == 0 ) value = 7; else if( (temp&0x2) == 0 ) value = 6; else if( (temp&0x4) == 0 ) value = 5; else if( (temp&0x8) == 0 ) value = 4; while(( temp & KEY_VALUE_MASK) != KEY_VALUE_MASK) // release temp = *(keyboard_base+0xfb); return value; } /* read line 3 */ temp = *(keyboard_base+0xf7); /* not 0xF mean key down */ if(( temp & KEY_VALUE_MASK) != KEY_VALUE_MASK) { if( (temp&0x1) == 0 ) value = 0xb; else if( (temp&0x2) == 0 ) value = 0xa; else if( (temp&0x4) == 0 ) value = 9; else if( (temp&0x8) == 0 ) value = 8; while(( temp & KEY_VALUE_MASK) != KEY_VALUE_MASK) // release temp = *(keyboard_base+0xf7); return value; } /* read line 4 */ temp = *(keyboard_base+0xef); /* not 0xF mean key down */ if(( temp & KEY_VALUE_MASK) != KEY_VALUE_MASK) { if( (temp&0x1) == 0 ) value = 0xf; else if( (temp&0x2) == 0 ) value = 0xe; else if( (temp&0x4) == 0 ) value = 0xd; else if( (temp&0x8) == 0 ) value = 0xc; while(( temp & KEY_VALUE_MASK) != KEY_VALUE_MASK) // release temp = *(keyboard_base+0xef); return value; } return -1; } /********************************************************************************************* * name: Eint4567Isr * func: * para: none * ret: none * modify: * comment: *********************************************************************************************/ void Eint4567Isr(void) { unsigned char which_int; Uart_Printf("\n SB2 or SB3 had pressed and light LED."); which_int=rEXTINTPND; rEXTINTPND=0xf; //clear EXTINTPND reg. rI_ISPC=BIT_EINT4567; //clear pending_bit if(which_int == 4) // SB2 { Led_Display(0x0); Led_Display(0x1); } else if(which_int == 8) // SB3 { Led_Display(0x0); Led_Display(0x2); } } （2）LCD模块步骤图：开始 LCD初始化显示开机画面显示操作界面结束源代码：/********************************************************************************************* * File： lcd.c * Author: embest * Desc： LCD control and display functions * History: *********************************************************************************************/ /*--- include files ---*/ #include "lcd.h" //#include "bmp.h" #include "44b.h" /*--- global variables ---*/ INT32U aLcdActiveBuffer[LCD_YSIZE][LCD_XSIZE/4]; /*--- extern variables ---*/ extern const INT8U aucTempBitmap[][76800]; /*--- function code ---*/ /********************************************************************************************* * name: Lcd_Init() * func: Initialize LCD Controller * para: none * ret: none * modify: * comment: *********************************************************************************************/ void Lcd_Init (void) { rDITHMODE=0x12210; rDP1_2 =0xa5a5; rDP4_7 =0xba5da65; rDP3_5 =0xa5a5f; rDP2_3 =0xd6b; rDP5_7 =0xeb7b5ed; rDP3_4 =0x7dbe; rDP4_5 =0x7ebdf; rDP6_7 =0x7fdfbfe; // disable,8B_SNGL_SCAN,WDLY=16clk,WLH=16clk, rLCDCON1=(0x0)|(2<<5)|(MVAL_USED<<7)|(0x3<<8)|(0x3<<10)|(CLKVAL_COLOR<<12); // LINEBLANK=10 (without any calculation) rLCDCON2=(LINEVAL)|(HOZVAL_COLOR<<10)|(10<<21); rLCDCON3=0; // 256-color, LCDBANK, LCDBASEU rLCDSADDR1= (0x3<<27) | ( ((unsigned int)aLcdActiveBuffer>>22)<<21 ) | M5D((unsigned int)aLcdActiveBuffer>>1); rLCDSADDR2= M5D((((unsigned int)aLcdActiveBuffer+(SCR_XSIZE*LCD_YSIZE))>>1)) | (MVAL<<21); rLCDSADDR3= (LCD_XSIZE/2) | ( ((SCR_XSIZE-LCD_XSIZE)/2)<<9 ); //The following value has to be changed for better display. rREDLUT =0xfdb96420; // 1111 1101 1011 1001 0110 0100 0010 0000 rGREENLUT=0xfdb96420; // 1111 1101 1011 1001 0110 0100 0010 0000 rBLUELUT =0xfb40; // 1111 1011 0100 0000 rLCDCON1=(0x1)|(2<<5)|(MVAL_USED<<7)|(0x3<<8)|(0x3<<10)|(CLKVAL_COLOR<<12); // rPDATE=rPDATE&0x0e; rPDATE=0xfe; Lcd_Clr(); } /********************************************************************************************* * name: Lcd_Clr() * func: clear LCD screen * para: none * ret: none * modify: * comment: *********************************************************************************************/ void Lcd_Clr(void) { INT32U i; INT32U *pDisp = (INT32U*)aLcdActiveBuffer; for (i = 0; i < (SCR_XSIZE * SCR_YSIZE / 4); i++) { *pDisp++ = ALLWHITE; } } /********************************************************************************************* * name: LcdClrRect() * func: fill appointed area with appointed color * para: usLeft,usTop,usRight,usBottom -- area's rectangle acme coordinate * ucColor -- appointed color value * ret: none * modify: * comment: also as clear screen function *********************************************************************************************/ void LcdClrRect(INT16 usLeft, INT16 usTop, INT16 usRight, INT16 usBottom, INT8U ucColor) { INT32U i, j; INT8U *pDisp = (INT8U*)aLcdActiveBuffer; for(i=usTop;i<=usBottom;i++) { for(j=usLeft;j<=usRight;j++) { LCD_PutPixel(j, i, ucColor); } } } #ifdef MON_LCD /********************************************************************************************* * name: LcdClrRect() * func: fill appointed area with appointed color * para: usLeft,usTop,usRight,usBottom -- area's rectangle acme coordinate * ucColor -- appointed color value * ret: none * modify: * comment: also as clear screen function *********************************************************************************************/ void LcdClrRect(INT16 usLeft, INT16 usTop, INT16 usRight, INT16 usBottom, INT8U ucColor) { INT16 i=0; INT16 k,l; INT16 m; INT32U ulColor = (ucColor << 28) | (ucColor << 24) | (ucColor << 20) | (ucColor << 16) | (ucColor << 12) | (ucColor << 8) | (ucColor << 4) | ucColor; if((usRight-usLeft)<=8) { for(i=usTop;i<=usBottom;i++) { for(m=usLeft;m<

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