ILI9327.cpp

00001  /* mbed UniGraphic library - Device specific class
00002  * Copyright (c) 2015 Giuliano Dianda
00003  * Released under the MIT License: http://mbed.org/license/mit
00004  */
00005 #include "Protocols.h "
00006 #include "ILI9327.h"
00007 
00008 //////////////////////////////////////////////////////////////////////////////////
00009 // display settings ///////////////////////////////////////////////////////
00010 /////////////////////////////////////////////////////////////////////////
00011 
00012 // put in constructor
00013 //#define LCDSIZE_X       240 // display X pixels, TFTs are usually portrait view
00014 //#define LCDSIZE_Y       400  // display Y pixels
00015 
00016 
00017 
00018 ILI9327::ILI9327(proto_t displayproto, PortName port, PinName CS, PinName reset, PinName DC, PinName WR, PinName RD, const char *name , unsigned int LCDSIZE_X, unsigned  int LCDSIZE_Y)
00019     : TFT(displayproto, port, CS, reset, DC, WR, RD, LCDSIZE_X, LCDSIZE_Y, name)
00020 {
00021     hw_reset();
00022     BusEnable(true);
00023     identify(); // will collect tftID, set mipistd flag
00024     init();
00025     auto_gram_read_format();// try to get read gram pixel format, could be 16bit or 18bit, RGB or BGR. Will set flags accordingly
00026 //    scrollbugfix=1; // when scrolling 1 line, the last line disappears, set to 1 to fix it, for ili9481 is set automatically in identify()
00027     set_orientation(0);
00028     FastWindow(true); // most but not all controllers support this, even if datasheet tells they should. Give a try
00029     cls();
00030     locate(0,0); 
00031 }
00032 ILI9327::ILI9327(proto_t displayproto, PinName* buspins, PinName CS, PinName reset, PinName DC, PinName WR, PinName RD, const char *name , unsigned int LCDSIZE_X, unsigned  int LCDSIZE_Y)
00033     : TFT(displayproto, buspins, CS, reset, DC, WR, RD, LCDSIZE_X, LCDSIZE_Y, name)
00034 {
00035     hw_reset();
00036     BusEnable(true);
00037     identify(); // will collect tftID, set mipistd flag
00038     init();
00039     auto_gram_read_format();// try to get read gram pixel format, could be 16bit or 18bit, RGB or BGR. Will set flags accordingly
00040 //    scrollbugfix=1; // when scrolling 1 line, the last line disappears, set to 1 to fix it, for ili9481 is set automatically in identify()
00041     set_orientation(0);
00042     FastWindow(true); // most but not all controllers support this, even if datasheet tells they should. Give a try
00043     cls();
00044     locate(0,0); 
00045 }
00046 ILI9327::ILI9327(proto_t displayproto, int Hz, PinName mosi, PinName miso, PinName sclk, PinName CS, PinName reset, PinName DC, const char *name , unsigned int LCDSIZE_X , unsigned  int LCDSIZE_Y )
00047     : TFT(displayproto, Hz, mosi, miso, sclk, CS, reset, DC, LCDSIZE_X, LCDSIZE_Y, name)
00048 {
00049     hw_reset(); //TFT class forwards to Protocol class
00050     BusEnable(true); //TFT class forwards to Protocol class
00051     identify(); // will collect tftID and set mipistd flag
00052     init(); // per display custom init cmd sequence, implemented here
00053     auto_gram_read_format();// try to get read gram pixel format, could be 16bit or 18bit, RGB or BGR. Will set flags accordingly
00054  //   scrollbugfix=1; // when scrolling 1 line, the last line disappears, set to 1 to fix it, for ili9481 is set automatically in identify()
00055     set_orientation(0); //TFT class does for MIPI standard and some ILIxxx
00056     FastWindow(true); // most but not all controllers support this, even if datasheet tells they should. Give a try
00057     cls();
00058     locate(0,0); 
00059 }
00060 // read display ID
00061 void ILI9327::identify()
00062 {
00063     // ILI9327 custom cmd
00064     tftID=rd_reg_data32(0xEF);
00065     mipistd=true;
00066 }
00067 // reset and init the lcd controller
00068 void ILI9327::init()
00069 {
00070     wr_cmd8(0x11);
00071     wait_ms(150);
00072     
00073     wr_cmd8(0xF3); //Set EQ 
00074     wr_data8(0x08);    
00075     wr_data8(0x20);    
00076     wr_data8(0x20);    
00077     wr_data8(0x08);  
00078     
00079     wr_cmd8(0xE7);  
00080     wr_data8(0x60);   //OPON 
00081     
00082     wr_cmd8(0xD1);  // Set VCOM 
00083     wr_data8(0x00);    
00084     wr_data8(0x5D);    
00085     wr_data8(0x15);  
00086     
00087     wr_cmd8(0xD0); //Set power related setting 
00088     wr_data8(0x07);    
00089     wr_data8(0x02);   //VGH:15V,VGL:-7.16V (BOE LCD: VGH:12~18V,VGL:-6~10V)  
00090     wr_data8(0x8B);    
00091     wr_data8(0x03);    
00092     wr_data8(0xD4); 
00093 
00094     wr_cmd8(0x3A); // Set_pixel_format
00095     wr_data8(0x55); //0x55:16bit/pixel,65k;0x66:18bit/pixel,262k;
00096 
00097     wr_cmd8(0x36); //Set_address_mode
00098     wr_data8(0x38);
00099     
00100     wr_cmd8(0x20); //Exit_invert_mode 
00101     
00102     wr_cmd8(0xC1);   //Set Normal/Partial mode display timing  
00103     wr_data8(0x10);    
00104     wr_data8(0x1A);    
00105     wr_data8(0x02);    
00106     wr_data8(0x02); 
00107     
00108     wr_cmd8(0xC0);  //Set display related setting  
00109     wr_data8(0x10);    
00110     wr_data8(0x31);    
00111     wr_data8(0x00);    
00112     wr_data8(0x00);    
00113     wr_data8(0x01);    
00114     wr_data8(0x02);  
00115     
00116     wr_cmd8(0xC4);  //Set waveform timing 
00117     wr_data8(0x01);    
00118     
00119     wr_cmd8(0xC5);  //Set oscillator 
00120     wr_data8(0x04);   //72Hz
00121     wr_data8(0x01); 
00122     
00123     wr_cmd8(0xD2);  //Set power for normal mode 
00124     wr_data8(0x01);    
00125     wr_data8(0x44);   
00126     
00127     wr_cmd8(0xC8);  //Set gamma
00128     wr_data8(0x00);    
00129     wr_data8(0x77);    
00130     wr_data8(0x77);    
00131     wr_data8(0x00);    
00132     wr_data8(0x04);    
00133     wr_data8(0x00);    
00134     wr_data8(0x00);    
00135     wr_data8(0x00);    
00136     wr_data8(0x77);    
00137     wr_data8(0x00);    
00138     wr_data8(0x00);    
00139     wr_data8(0x08);    
00140     wr_data8(0x00);    
00141     wr_data8(0x00);    
00142     wr_data8(0x00); 
00143     
00144     wr_cmd8(0xCA);  //Set DGC LUT
00145     wr_data8(0x00); 
00146     
00147     wr_cmd8(0xEA);  //3-Gamma Function Control
00148     wr_data8(0x80);  // enable
00149     
00150     wr_cmd8(0x29);  // Set_display_on  
00151     wait_ms(150);
00152     
00153 }