UniGraphic-Fork for ST7920-LCD-controller and SH1106. Tested with 128x64 LCD with SPI and 128x64-OLED with IIC
Dependents: UniGraphic-St7920-Test AfficheurUTILECO
Fork of UniGraphic by
Fork of the UniGraphic-Library for monochrome LCDs with ST7920 controller and 128x64-IIC-OLED-Display with SH1106-Controller
Had to adapt LCD for following reasons:
- Give access to screenbuffer buffer[] to parent class
- pixel() and pixel_read() as they are hardware-dependent
- added reset-pin to IIC-Interface
GraphicDisplay:: sends buffer to LCD when auto_update is set to true.
Testprogram for ST7920 can be found here:
https://developer.mbed.org/users/charly/code/UniGraphic-St7920-Test/
Diff: Display/TFT.cpp
- Revision:
- 7:bb0383b91104
- Parent:
- 5:b222a9461d6b
- Child:
- 8:26757296c79d
--- a/Display/TFT.cpp Mon Feb 16 01:18:29 2015 +0000 +++ b/Display/TFT.cpp Tue Feb 17 11:02:06 2015 +0000 @@ -23,7 +23,7 @@ #define SWAP(a, b) { a ^= b; b ^= a; a ^= b; } TFT::TFT(proto_t displayproto, PortName port, PinName CS, PinName reset, PinName DC, PinName WR, PinName RD, const int lcdsize_x, const int lcdsize_y, const char *name) - : GraphicsDisplay(name), LCDSIZE_X(lcdsize_x), LCDSIZE_Y(lcdsize_y) + : GraphicsDisplay(name), screensize_X(lcdsize_x), screensize_Y(lcdsize_y) { if(displayproto==PAR_8) proto = new PAR8(port, CS, reset, DC, WR, RD); else if(displayproto==PAR_16) proto = new PAR16(port, CS, reset, DC, WR, RD); @@ -34,11 +34,13 @@ foreground(White); background(Black); set_auto_up(false); //we don't have framebuffer + topfixedareasize=0; + scrollareasize=0; // cls(); // locate(0,0); } TFT::TFT(proto_t displayproto, int Hz, PinName mosi, PinName miso, PinName sclk, PinName CS, PinName reset, PinName DC, const int lcdsize_x, const int lcdsize_y, const char *name) - : GraphicsDisplay(name), LCDSIZE_X(lcdsize_x), LCDSIZE_Y(lcdsize_y) + : GraphicsDisplay(name), screensize_X(lcdsize_x), screensize_Y(lcdsize_y) { if(displayproto==SPI_8) { @@ -56,6 +58,8 @@ foreground(White); background(Black); set_auto_up(false); + topfixedareasize=0; + scrollareasize=0; // locate(0,0); } void TFT::wr_cmd8(unsigned char cmd) @@ -83,13 +87,17 @@ { proto->wr_grambuf(data, lenght); } -unsigned int TFT::rd_data32_wdummy() - { - return proto->rd_data32_wdummy(); - } unsigned short TFT::rd_gram() { - return (proto->rd_gram()); + return proto->rd_gram(); + } +unsigned int TFT::rd_reg_data32(unsigned char reg) + { + return proto->rd_reg_data32(reg); + } +unsigned int TFT::rd_extcreg_data32(unsigned char reg, unsigned char SPIreadenablecmd) + { + return proto->rd_extcreg_data32(reg, SPIreadenablecmd); } //for TFT, just send data, position counters are in hw void TFT::window_pushpixel(unsigned short color) @@ -121,29 +129,34 @@ case 0:// default, portrait view 0° if(mipistd) wr_data8(0x0A); // this is in real a vertical flip enabled, seems most displays are vertical flipped else wr_data8(0x48); //for some other ILIxxxx - set_width(LCDSIZE_X); - set_height(LCDSIZE_Y); + set_width(screensize_X); + set_height(screensize_Y); break; case 1:// landscape view +90° if(mipistd) wr_data8(0x28); else wr_data8(0x29);//for some other ILIxxxx - set_width(LCDSIZE_Y); - set_height(LCDSIZE_X); + set_width(screensize_Y); + set_height(screensize_X); break; case 2:// portrait view +180° if(mipistd) wr_data8(0x09); else wr_data8(0x99);//for some other ILIxxxx - set_width(LCDSIZE_X); - set_height(LCDSIZE_Y); + set_width(screensize_X); + set_height(screensize_Y); break; case 3:// landscape view -90° if(mipistd) wr_data8(0x2B); else wr_data8(0xF8);//for some other ILIxxxx - set_width(LCDSIZE_Y); - set_height(LCDSIZE_X); + set_width(screensize_Y); + set_height(screensize_X); break; } } +void TFT::invert(unsigned char o) +{ + if(o == 0) wr_cmd8(0x20); + else wr_cmd8(0x21); +} // TFT have both column and raw autoincrement inside a window, with internal counters void TFT::window(int x, int y, int w, int h) { @@ -186,10 +199,70 @@ if(mipistd) color = BGR2RGB(color); // in case, convert BGR to RGB (should depend on cmd36 bit3) but maybe is device specific return color; } +void TFT::setscrollarea (int startY, int areasize) // ie 0,480 for whole screen +{ + unsigned int bfa; + topfixedareasize=startY; + scrollareasize=areasize; + wr_cmd8(0x33); + wr_data16(topfixedareasize); //num lines of top fixed area + wr_data16(scrollareasize+scrollbugfix); //num lines of vertical scroll area, +1 for ILI9481 fix + if((areasize+startY)>height()) bfa=0; + else bfa = height()-(areasize+startY); + wr_data16(bfa); //num lines of bottom fixed area +} +void TFT::scroll (int lines) // ie 1= scrollup 1, 479= scrolldown 1 +{ + wr_cmd8(0x37); + wr_data16((topfixedareasize+lines)%scrollareasize); //num lines of top fixed area +} +void TFT::scrollreset() +{ + wr_cmd8(0x13); //normal display mode +} void TFT::cls (void) { WindowMax(); - // proto->wr_gram(_background,LCDSIZE_X*LCDSIZE_Y); - // proto->wr_gram(0,LCDSIZE_X*LCDSIZE_Y); - wr_gram(_background,LCDSIZE_X*LCDSIZE_Y); + // proto->wr_gram(_background,screensize_X*screensize_Y); + // proto->wr_gram(0,screensize_X*screensize_Y); + wr_gram(_background,screensize_X*screensize_Y); +} +// try to identify display controller +void TFT::identify() +{ + // MIPI std read ID cmd + tftID=rd_reg_data32(0xBF); + mipistd=true; + // debug("ID MIPI : 0x%8X\r\n",tftID); + if(((tftID&0xFF)==((tftID>>8)&0xFF)) && ((tftID&0xFF)==((tftID>>16)&0xFF))) + { + mipistd=false; + // ILI specfic read ID cmd + tftID=rd_reg_data32(0xD3)>>8; + // debug("ID ILI : 0x%8X\r\n",tftID); + } + if(((tftID&0xFF)==((tftID>>8)&0xFF)) && ((tftID&0xFF)==((tftID>>16)&0xFF))) + { + // ILI specfic read ID cmd with ili9341 specific spi read-in enable 0xD9 cmd + tftID=rd_extcreg_data32(0xD3, 0xD9); + // debug("ID D9 extc ILI : 0x%8X\r\n",tftID); + } + if(((tftID&0xFF)==((tftID>>8)&0xFF)) && ((tftID&0xFF)==((tftID>>16)&0xFF))) + { + // ILI specfic read ID cmd with ili9486/88 specific spi read-in enable 0xFB cmd + tftID=rd_extcreg_data32(0xD3, 0xFB); + // debug("ID D9 extc ILI : 0x%8X\r\n",tftID); + } + if(((tftID&0xFF)==((tftID>>8)&0xFF)) && ((tftID&0xFF)==((tftID>>16)&0xFF))) tftID=0xDEAD; + if ((tftID&0xFFFF)==0x9481) scrollbugfix=1; + else scrollbugfix=0; + hw_reset(); // in case wrong cmds messed up important settings +} +int TFT::sizeX() +{ + return screensize_X; +} +int TFT::sizeY() +{ + return screensize_Y; } \ No newline at end of file