Revision 2:ebedda77b33b, committed 2014-09-02

Comitter:

cstevens

Date:

Tue Sep 02 09:02:18 2014 +0000

Parent:

1:1085b6177f6e

Child:

3:f999653c1069

Commit message:

based on fuentes library for tft lcd - this does the ssd0139 samsung driver for 240x320 color screens like those often sold on ebay

Changed in this revision

--- a/LCDTFT.cpp	Tue Mar 15 01:47:35 2011 +0000
+++ b/LCDTFT.cpp	Tue Sep 02 09:02:18 2014 +0000
@@ -14,8 +14,8 @@
 ////                                                                   ////
 ////                                                                   ////
 ////        (C) Copyright 2011 www.micros-designs.com.ar               ////
-//// Este código puede ser usado, modificado y distribuido libremente  ////
-//// sin eliminar esta cabecera y  sin garantía de ningún tipo.        ////
+//// Este c�digo puede ser usado, modificado y distribuido libremente  ////
+//// sin eliminar esta cabecera y  sin garant�a de ning�n tipo.        ////
 ////                                                                   ////
 ////                                                                   ////
 /////////////////////////////////////////////////////////////////////////// 
@@ -31,8 +31,62 @@
     _Alto=1;
     _Color=0x0000;
 }
+// global variable for screen orientation set by init
+bool orient=0;
 
-void LCDTFT::vLCDTFTSetParametersPrintf(unsigned short Xo,unsigned short Yo,unsigned short Xmin,unsigned short Xmax,unsigned char Alto, unsigned short Color){
+ static const unsigned short regValues[] = {
+    0x0000, 0x0001, // start oscillation
+    0x00FF, 0x0010, // wait 16 ms
+    0x0007, 0x0000, //display control - zeros everything ??? 
+    0x0013, 0x0000, // power control 3 setting = all zero
+    0x0011, 0x2604, //power control 2 seting = gvd voltage 0x26 vci1 voltage 0x04
+    0x0014, 0x0015, // power contrlol 4 setting vcmr=0 vcomh=0 vml=13 = amplitude of vcom voltage
+    0x0010, 0x3C00, // power control 1 bt3=0 sap=7 (0b111) bt=4 (0b100)
+    0x0013, 0x0040, //power control 3 PON=1 PON1=0 AON=0
+    0x00FF,0x0010, // wait 16ms
+    0x0013, 0x0060, // power control 3 PON=1 PON1=1 AON=0    
+    0x00FF, 0x0032, // wait 50ms
+    0x0013, 0x0070, //power control 3 PON=1 PON1=1 AON=1
+    0x00FF, 0x0028, // wait 40ms
+       
+    0x0001, 0x0127,  // driver ouptut control
+    0x0002, 0x0700,  //LCD driving waveform settings
+    0x0003, 0x1030,  // entry mode settingtri=0 dfm=0 bgr=1 id1:id0=11
+    0x0007, 0x0000,  // display control 1 pt1-0=0 vle2-1=0 spt=0 gon=0 rev=0 d1-0=0
+    0x0008, 0x0404,  //black period control fp3-0=4 bp3-0=4
+    0x000B, 0x0200,  //frame cycle setting nd1-0=0 sdt1-0=2 ecs2-0=0 div1-0=0 dcr_ex=0 dcr2-0=0 rtn1-0=0
+    0x000C, 0x0000,  //external interface controlrm=0 dm1-0=0 rim1-0=0
+    0x00015,0x0000,  //sub panel control sub_im1-0=0 stn_en=0 mpu_mode=0 fcv_en=0
+       
+    //gamma setting    
+    0x0030, 0x0000,      
+    0x0031, 0x0606,    
+    0x0032, 0x0006,    
+    0x0033, 0x0403,  
+    0x0034, 0x0107,  
+    0x0035, 0x0101, 
+    0x0036, 0x0707,   
+    0x0037, 0x0304,   
+    0x0038, 0x0A00,     
+    0x0039, 0x0706,     
+       // end of gamma settings
+    0x0040, 0x0000,   // gate scan position (start g1 scan) scn5-0=0
+    0x0041, 0x0000,   // vertical scroll setting vl8-0=0
+    0x0042, 0x013F,   // screen end position se18-10=0x13F
+    0x0043, 0x0000,   // screen_start position ss28-20=0
+    0x0044, 0x0000,   // 2nd screen driving position end 00
+    0x0045, 0x0000,   //2nd screen driving position start =00
+    0x0046, 0xEF00,   //window addre horizontal ram for x0,x1 HEA=0xEF HSA=00 ie x=0 and x=239
+    0x0047, 0x013F,   //vertical ram address end vea=0x13F ie y=319
+    0x0048, 0x0000,    //vertical ram address start=00 ie y=0
+    0x0007, 0x0011,  //dispaly control 1
+    0x00FF, 0x0028, //wait 40ms
+    0x0007, 0x0017,    //display control 1
+
+};
+
+
+void LCDTFT::vLCDTFTSetParametersPrintf(unsigned short Xo,unsigned short Yo,unsigned short Xmin,unsigned short Xmax,unsigned char Alto, unsigned short Color,unsigned short BackColor){
 
     X=Xo;
     Y=Yo;
@@ -40,6 +94,7 @@
     X_max=Xmax;
     _Alto=Alto;
     _Color=Color;
+    _Background=BackColor;
 }
 
 int LCDTFT::_putc(int value){
@@ -47,13 +102,13 @@
 
     if(value=='\n'){
         X=X_min;
-        Y+=7*_Alto + 1;
+        Y+=8*_Alto + 1;
     }else{
-        vLCDTFTText(X,Y,(const char *)&Fmt[0],&ARIAL[0],_Alto,_Color);
+        vLCDTFTText(X,Y,(const char *)&Fmt[0],&ARIAL[0],_Alto,_Color,_Background);
         X+=5*_Alto+1;
         if(X >= X_max){
             X = X_min;                           
-            Y += 7*_Alto + 1;                
+            Y += 8*_Alto + 1;                
         }
     }
     return(value);
@@ -67,16 +122,23 @@
     
     LCD_PIN_RS=0;
     LCD_PIN_CS=0;   
-    LCD_PORT->write(Data);   
+    LCD_PORT->write(Data>>8);   // MSB so with an 8 bit port we need to write here the high and ,low bytes successively
     LCD_PIN_WR=0;
     LCD_PIN_WR=1;
+    LCD_PORT->write(Data & 0x00FF);   // LSB
+    LCD_PIN_WR=0;
+    LCD_PIN_WR=1;
+    
     LCD_PIN_CS=1;   
 }
 
 void LCDTFT::vLCDTFTWriteData(unsigned short Data){
     LCD_PIN_RS=1;
     LCD_PIN_CS=0;   
-    LCD_PORT->write(Data);   
+    LCD_PORT->write(Data>>8);   // MSB so with an 8 bit port we need to write here the high and ,low bytes successively
+    LCD_PIN_WR=0;
+    LCD_PIN_WR=1;
+    LCD_PORT->write(Data & 0x00FF);   // LSB
     LCD_PIN_WR=0;
     LCD_PIN_WR=1;
     LCD_PIN_CS =1;   
@@ -100,23 +162,59 @@
 
 void LCDTFT::vLCDTFTAddressSetPoint(unsigned short x,unsigned short y){ 
 
-    vLCDTFTWriteCommandData(0x004e,x);
-    vLCDTFTWriteCommandData(0x004f,y);
-    vLCDTFTWriteCommand(0x0022);       
+// CGRAM addresses are given by (x+y*256) - for some reason the y cordinate 
+// addresses require 17 bits
+// equiv if y is given by 0xYYY and x by 0xXX
+// then address of point x,y is 0xYYYXXX
+     int add;
+     int adl,adh;
+     if(orient==0){ // portrait
+            add=x+y*256; //240 x 320 y but 256 bytes for each x row
+         
+            }
+    else{
+            add=(239-y)+x*256;
+        }   
+      adl=add & 0x00FF; // selects the 8 low bits
+            adh=(add >>8); // the 9 high bits
+   vLCDTFTWriteCommandData(0x0020,adl); // 8 lsb of address
+   vLCDTFTWriteCommandData(0x0021,adh); //9 msb of address
+    vLCDTFTWriteCommand(0x0022);       // prepare to send rgb data
 }  
 
-void LCDTFT::vLCDTFTInit(void){
+void LCDTFT::vLCDTFTInit(bool format){
 
+    int i;
+    unsigned short  address,data;
+    orient=format;
     LCD_PIN_RESET=1;
-    wait_ms(5);   
+    wait_ms(5);   // must hold for at least 1ms after reset
     LCD_PIN_RESET=0;
-    wait_ms(10);
+    wait_ms(10); // wait for stable R-C oscillation
     LCD_PIN_RESET=1;
+    wait_ms(5); // final wait for rest to be acitvated
     LCD_PIN_CS=1;
     LCD_PIN_RD=1;
     LCD_PIN_WR=1;
     wait_ms(20);
+    
+    for(i=0;i<sizeof(regValues)/4;i++)
+    {
+        address=regValues[i*2];
+        data=regValues[i*2+1];
+        
+        if(address==0xFF)
+        {
+            wait_ms(data);
+            }
+            else {
+                vLCDTFTWriteCommandData(address,data);
+                }
+        }
+        wait_ms(1);
+        
 
+/*
     vLCDTFTWriteCommandData(0x0000,0x0001);    wait_ms(1);  
     vLCDTFTWriteCommandData(0x0003,0xA8A4);    wait_ms(1);  
     vLCDTFTWriteCommandData(0x000C,0x0000);    wait_ms(1);   
@@ -159,11 +257,15 @@
     vLCDTFTWriteCommandData(0x004f,0);        
     vLCDTFTWriteCommandData(0x004e,0);        
     vLCDTFTWriteCommand(0x0022);
+    */
 }
 
 void LCDTFT::vLCDTFTFillScreen(unsigned short Color){
     unsigned short i,j;
-    vLCDTFTAddressSet(0,0,239,319);
+
+     vLCDTFTWriteCommandData(0x0020,00); //set x=0
+    vLCDTFTWriteCommandData(0x0021,00); // set y=0
+    vLCDTFTWriteCommand(0x0022);       
 
     for(i=0;i<320;i++){
         for (j=0;j<240;j++){
@@ -178,7 +280,7 @@
     vLCDTFTWriteData(Color);
 }
  
-void LCDTFT::vLCDTFTText(unsigned short x,unsigned short y,const char *PtrText,const char (*Fuente)[5],unsigned char Alto,unsigned short Color){
+void LCDTFT::vLCDTFTText(unsigned short x,unsigned short y,const char *PtrText,const char (*Fuente)[5],unsigned char Alto,unsigned short Color,unsigned short BackColor){
    unsigned short i, j, k, l, m, temp;           
    char DataPunto[5]; 
    const char *Ptr;
@@ -205,9 +307,16 @@
                        for(l=0; l < Alto; ++l){                         
                           for(m=0; m < Alto; ++m){
                              vLCDTFTPoint(x+m,y+k*Alto+l,Color);
-                          }
-                       }
-                    }
+                          }//endform
+                       }//endforl
+                    }//endif
+                    else{
+                        for(l=0; l < Alto; ++l){                         
+                          for(m=0; m < Alto; ++m){
+                             vLCDTFTPoint(x+m,y+k*Alto+l,BackColor);
+                          }//endform
+                       }//endforl
+                        }
                  }
               }
               x++;
@@ -271,11 +380,11 @@
 void LCDTFT::vLCDTFTRectangle(unsigned short x1,unsigned short y1,unsigned short x2,unsigned short y2,bool Filled,unsigned short Color){
    
     if(Filled){
-        int Lenght=((int)(x2-x1+1)*(y2-y1+1));  
+        int Lenght=(int)(x2-x1);  
        
-        vLCDTFTAddressSet(x1,y1,x2,y2);      
+            
         for(int i=0;i<Lenght;i++){
-            vLCDTFTWriteData(Color);                         
+            vLCDTFTLine(x1,y1+i,x2,y1+i,Color);                         
         }   
     }else{
         vLCDTFTLine(x1, y1, x2, y1, Color);     
@@ -313,7 +422,7 @@
         else P += 5 + 2 * (a++ - b--);
     }while(a <= b);
 }
-
+/*
 void LCDTFT::vDrawImageBMP24Bits(const char *NameImagen){
 
     #define OffsetWidthPixel    18
@@ -391,7 +500,7 @@
     }
     fclose(Imagen);
 }
-
+*/
 void LCDTFT::vLCDTFTDrawImage(unsigned short x,unsigned short y, unsigned short Width, unsigned short Heigh, unsigned int Lenght, const unsigned short *Imagen){
 
     vLCDTFTAddressSet(x,y,x+Width-1,y+Heigh-1);      

--- a/LCDTFT.h	Tue Mar 15 01:47:35 2011 +0000
+++ b/LCDTFT.h	Tue Sep 02 09:02:18 2014 +0000
@@ -14,8 +14,8 @@
 ////                                                                   ////
 ////                                                                   ////
 ////        (C) Copyright 2011 www.micros-designs.com.ar               ////
-//// Este código puede ser usado, modificado y distribuido libremente  ////
-//// sin eliminar esta cabecera y  sin garantía de ningún tipo.        ////
+//// Este c�digo puede ser usado, modificado y distribuido libremente  ////
+//// sin eliminar esta cabecera y  sin garant�a de ning�n tipo.        ////
 ////                                                                   ////
 ////                                                                   ////
 /////////////////////////////////////////////////////////////////////////// 
@@ -68,7 +68,7 @@
 #define    ColorLime            0x7e0
 #define    ColorAqua            0x7ff
 
-#define       LCD_X_MAX            240
+#define       LCD_X_MAX            240 // these swapped
 #define       LCD_Y_MAX            320
 
 class LCDTFT: public Stream {
@@ -84,9 +84,9 @@
          */
         LCDTFT(PinName PIN_RD,PinName PIN_WR,PinName PIN_RS,PinName PIN_CS,PinName PIN_RESET, BusOut *BUSLCD);
         /** Inicializa LCD
-        *
+        * format =0 portrait and 1 for landscape
         */
-        void vLCDTFTInit(void);
+        void vLCDTFTInit(bool format);
         /** Fija parametros para escritura mediante printf
         *
         * @param Xo X inicial
@@ -95,8 +95,9 @@
         * @param Xmax X maximo
         * @param Alto Alto de letra (1,2,3..)
         * @param Color Color de letra 16-bits
+        * and the background color for clearing
         */
-        void vLCDTFTSetParametersPrintf(unsigned short Xo,unsigned short Yo,unsigned short Xmin,unsigned short Xmax,unsigned char Alto, unsigned short Color);
+        void vLCDTFTSetParametersPrintf(unsigned short Xo,unsigned short Yo,unsigned short Xmin,unsigned short Xmax,unsigned char Alto, unsigned short Color, unsigned short BackColor);
         /** Pinta pantalla completa de color
         * @param Color Color de 16-bits
         */
@@ -115,7 +116,7 @@
         * @param Alto Alto de letra (1,2,3)
         * @param Color Color de 16-bits
         */
-        void vLCDTFTText(unsigned short x,unsigned short y,const char *PtrText,const char (*Fuente)[5],unsigned char Alto,unsigned short Color);
+        void vLCDTFTText(unsigned short x,unsigned short y,const char *PtrText,const char (*Fuente)[5],unsigned char Alto,unsigned short Color,unsigned short BackColor);
         
         void vLCDTFTLine(unsigned short x1,unsigned short y1,unsigned short x2,unsigned short y2,unsigned short Color);
         void vLCDTFTRectangle(unsigned short x1,unsigned short y1,unsigned short x2,unsigned short y2,bool Filled,unsigned short Color);
@@ -143,7 +144,7 @@
     private:
         DigitalOut LCD_PIN_RD,LCD_PIN_WR,LCD_PIN_RS,LCD_PIN_CS,LCD_PIN_RESET;    
         BusOut *LCD_PORT;    
-        unsigned short X,Y,X_min,X_max,_Alto,_Color;
+        unsigned short X,Y,X_min,X_max,_Alto,_Color,_Background;
         // Stream implementation functions
         virtual int _putc(int value);
         virtual int _getc();