LCD4884.cpp

00001 /*
00002 Modified by COX
00003 version 0.1
00004 
00005 Editor     : COX
00006 Date       : 06.03.2013
00007 
00008 *
00009 * Update DFRobot source to work on FRDM KL25Z
00010 *
00011 */
00012 
00013 #include "LCD4884.h"
00014 #include "font_6x8.h"
00015 #include "font_big.h"
00016 
00017 DigitalOut SpiClk(SPI_SCK);    //2- Serial Clock(Master Output)
00018 DigitalOut SpiMosi(SPI_MOSI);  //3- Master Output,Slave Input
00019 DigitalOut LcdDC(LCD_DC);      //4- Data/Command(command active low)
00020 DigitalOut SpiCS(SPI_CS);      //5- Chip Select,Slave Transmit Enable(active low,Master Output)
00021 DigitalOut LcdRst(LCD_RST);    //6- One Reset button
00022 PwmOut     LcdBl(LCD_BL);      //7- LCD backlight
00023 
00024 LCD4884::LCD4884()
00025 {};
00026 
00027 /******************************************************************/
00028 void LCD4884::backlight(float dat)
00029 {
00030     LcdBl = dat;
00031 }
00032 
00033 /******************************************************************/
00034 void LCD4884::LCD_init(void)
00035 {
00036     /* pin intializer */
00037     SpiClk = LOW;
00038     SpiMosi = LOW;
00039     SpiCS = LOW;
00040     LcdDC = LOW;
00041     LcdBl = LOW;
00042 
00043     LcdRst = LOW;
00044     wait(ONE_US);
00045     LcdRst = HIGH;
00046     
00047     SpiCS = LOW;  //Chip Select, Slave Transmit Enable(active low, Master Output)
00048     wait(ONE_US);
00049     SpiCS = HIGH;
00050     wait(ONE_US);
00051     LcdBl = LCD_INITIAL_BRIGHTNESS;
00052     
00053     //data_type=0, all are command bytes
00054     LCD_write_byte(0x21, 0); //Function Set:0 0 1 0 0 PD V H=0010 0001;PD=0,V=0,H=1;
00055     LCD_write_byte(0xc0, 0); //Set Vop:1 Vop6 Vop5 Vop4 Vop3 Vop2 Vop1 Vop0=1100 0000
00056     LCD_write_byte(0x06, 0); //Set Temperature Coefficient:0 0 0 0 0 1 Tc1 Tc0=0000 0110;Tc1=1,Tc0=0(Vlcd temperature coefficient 2)
00057     LCD_write_byte(0x13, 0); //Set Bias System (BSx):0 0 0 1 0 BS2 BS1 BS0=0001 0011;BS2=0, BS1=1, BS0=1==>N=4,MUX RATE=1:48
00058 
00059     LCD_write_byte(0x20, 0);//Function Set:0 0 1 0 0 PD V H=0010 0000;PD=0,V=0,H=0;
00060     LCD_clear();
00061     LCD_write_byte(0x0c, 0);//Display Control: 0 0 0 0 1 D 0 E=0000 1100 ;D=1,E=0:normal mode
00062 
00063     SpiCS = LOW;
00064 }
00065 
00066 /******************************************************************/
00067 void LCD4884::LCD_write_byte(unsigned char dat, unsigned char dat_type)
00068 {
00069     unsigned int i;
00070     SpiCS = LOW; //Chip Enable:Active LOW
00071 
00072     if (dat_type == 0)
00073         LcdDC = LOW; // D/C=0:the current data byte is interpreted as command byte
00074     else
00075         LcdDC = HIGH; // D/C=1:write data to display RAM
00076 
00077     for(i=0;i<8;i++)
00078     {
00079         if(dat&0x80) //1000 0000
00080         {
00081             SpiMosi = HIGH;
00082         }
00083         else
00084         {
00085             SpiMosi = LOW;
00086         }
00087         SpiClk = LOW;
00088         dat = dat << 1;
00089         SpiClk = HIGH;
00090     }
00091     SpiCS = HIGH;
00092 }
00093 
00094 /******************************************************************/
00095 void LCD4884::LCD_draw_bmp_pixel(unsigned char X,unsigned char Y,unsigned char *map,
00096                   unsigned char Pix_x,unsigned char Pix_y)
00097 {
00098     unsigned int i,n;
00099     unsigned char row;
00100 
00101     if (Pix_y%8==0)
00102         row=Pix_y/8; //row from 1 to 6;Pix_y from R0 to R47
00103     else
00104         row=Pix_y/8+1; //Quotient+1
00105     
00106     for (n=0;n<row;n++)
00107     {
00108         LCD_set_XY(X,Y);
00109         for(i=0; i<Pix_x; i++)
00110         {
00111             LCD_write_byte(map[i+n*Pix_x], 1); // D/C=1:write data to display RAM
00112         }
00113         Y++;
00114     }
00115 }
00116 
00117 /**************************************************************************************/
00118 void LCD4884::LCD_write_string(unsigned char X,unsigned char Y,char *s, char mode)
00119 {
00120     LCD_set_XY(X,Y);
00121     while (*s)
00122     {
00123         LCD_write_char(*s, mode);
00124         s++;
00125     }
00126 }
00127 
00128 /**************************************************************************************/
00129 void LCD4884::LCD_prop_write_string(unsigned char X,unsigned char Y,char *s, char mode)
00130 {
00131     LCD_set_XY(X,Y);
00132     while (*s)
00133     {
00134         LCD_prop_write_char(*s, mode);
00135         s++;
00136     }
00137 }
00138 
00139 /*************************************************************************************/
00140 void LCD4884::LCD_write_chinese(unsigned char X, unsigned char Y,unsigned char *c,unsigned char ch_with,unsigned char num,unsigned char line,unsigned char row)
00141 {
00142     unsigned char i,n;
00143     LCD_set_XY(X,Y);                             
00144     for (i=0;i<num;)
00145     {
00146         for (n=0; n<ch_with*2; n++)
00147         {
00148             if (n==ch_with)
00149             {
00150                 if (i==0)
00151                     LCD_set_XY(X,Y+1);
00152                 else
00153                   LCD_set_XY((X+(ch_with+row)*i),Y+1);
00154             }
00155             LCD_write_byte(c[(i*ch_with*2)+n],1);
00156         }
00157         i++; 
00158         LCD_set_XY((X+(ch_with+row)*i),Y); 
00159     }
00160 }
00161 
00162 
00163 /******************************************************************/
00164 void LCD4884::LCD_write_string_big ( unsigned char X,unsigned char Y, char *string, char mode )
00165 {
00166     while ( *string )
00167     {
00168         LCD_write_char_big( X, Y, *string , mode );
00169         
00170         if(*string++ == '.')
00171             X += 5;
00172         else
00173             X += 12;
00174     }
00175 }
00176 
00177 /******************************************************************/
00178 /* write char in big font */
00179 void LCD4884::LCD_write_char_big (unsigned char X,unsigned char Y, unsigned char ch, char mode)
00180 {
00181    unsigned char i, j;
00182    unsigned char *pFont;
00183    unsigned char ch_dat;
00184    
00185    pFont = (unsigned char *) big_number;
00186    
00187    if(ch == '.')
00188         ch = 10;
00189    else if (ch == '+')
00190         ch = 11;
00191    else if (ch == '-')
00192         ch = 12;
00193    else
00194         ch = ch & 0x0f;
00195 
00196    for(i=0;i<3;i++)
00197    {
00198         LCD_set_XY ( X, Y+i);
00199 
00200         for(j=0; j<16; j++)
00201         {
00202             ch_dat = *(pFont+ch*48 + i*16 +j);
00203             LCD_write_byte( (mode == MENU_NORMAL)? ch_dat : (ch_dat^0xff), 1);
00204         }
00205    }
00206 }
00207   
00208 /******************************************************************/
00209 void LCD4884::LCD_write_char(unsigned char c, char mode)
00210 {
00211     unsigned char line;
00212     unsigned char *pFont;
00213     unsigned char ch; 
00214     
00215     pFont = (unsigned char *)font6_8; //pointer *pFont points at font6_8[][6]
00216     c -= 32; // the ASCII of "SP" is 32
00217 
00218     for (line=0; line<6; line++)
00219     {
00220         ch = *(pFont+c*6+line); //read c from the font6_8[][6] (the detail information is in the "font6x8.h")
00221         LCD_write_byte( (mode==MENU_NORMAL)? ch: (ch^ 0xff) , 1); //MENU_NORMAL=0,True:return ch;False:return ch
00222     }
00223 }
00224 
00225 /*******************************************************************/
00226 unsigned char LCD4884::LCD_prop_write_char(unsigned char c, char mode)
00227 {
00228     int line, line_s=0, line_e=2;
00229     unsigned char *pFont;
00230     unsigned char ch;
00231 
00232     pFont = (unsigned char *)font6_8;
00233     if (c -= 32)
00234     {
00235         for (line_s=0; line_s<6; line_s++)
00236         {
00237             if(*(pFont+c*6+line_s))
00238                 break;
00239         }
00240         for (line_e=5; line_e<0; line_e--)
00241         {
00242             if(*(pFont+c*6+line_e))
00243                 break;
00244         }
00245     }
00246     for (line=line_s; line<line_e+1; line++)
00247     {
00248         ch = *(pFont+c*6+line);
00249         LCD_write_byte( (mode==MENU_NORMAL)? ch: (ch^ 0xff) , 1);
00250     }
00251     LCD_write_byte( (mode==MENU_NORMAL)? 0:0xff, 1);
00252     return ((unsigned char)(line_e+2 - line_s));
00253 }
00254 
00255 /******************************************************************/
00256 void LCD4884::LCD_set_XY(unsigned char X, unsigned char Y)
00257 {
00258     LCD_write_byte(0x40 | Y, 0);        // column
00259     LCD_write_byte(0x80 | X, 0);        // row
00260 }
00261 
00262 /******************************************************************/
00263 void LCD4884::LCD_clear(void)
00264 {
00265     unsigned int i;
00266 
00267     LCD_write_byte(0x0c, 0);
00268     LCD_write_byte(0x80, 0);
00269 
00270     for (i=0; i<504; i++)  //6*84
00271     {
00272         LCD_write_byte(0, 1);
00273     }
00274 }
00275