LPC1768 Mini-DK board with 2.8" SPI TFT and SPI touch
Dependencies: Mini-DK mbed SDFileSystem
WARNING: filetoflash (SD to CPU flash)
The SPI_TFT library called from Mini-DK.lib contains an option to copy an image from the SD card to the CPU flash memory. This allows you to use an image as background without speed loss when writing other text and graphics.
By default, this option is enabled.
It can be disabled by uncommenting the #define mentioned below in Mini_DK.h:
#define NO_FLASH_BUFFER
Since the flash memory has limited write endurance, DO NOT use this feature when you intend to read multiple images from the SD card (eg: when used as a photo frame).
main.cpp
- Committer:
- frankvnk
- Date:
- 2013-01-08
- Revision:
- 10:d07f76421408
- Parent:
- 9:3e117b89c705
- Child:
- 13:a10300cac491
File content as of revision 10:d07f76421408:
/* This file contains 3 examples: ONE : Original example with paint demo. TWO : Example for displaying a bitmap read from SD card. Download the house.bmp bitmap file from http://mbed.org/media/uploads/frankvnk/house.bmp Copy this file to the root of an SD card, insert it into the Mini-DK. THREE : Example for copying a bitmap from SD to flash memory, use it as background and write text without disrupting the background image. Download the house.bmp bitmap file from http://mbed.org/media/uploads/frankvnk/house.bmp Copy this file to the root of an SD card, insert it into the Mini-DK. IMPORTANT: Enable #define USE_FLASH_BUFFER in SPI_TFT.h to allow copy to flash. If copy to flash option is not needed - disable it. UNCOMMENT THE DESIRED CODE TO TEST. */ // ========================================================================================================= // ================================================== ONE ================================================== // ========================================================================================================= #include "stdio.h" #include "mbed.h" #include "Mini_DK.h" extern unsigned char p1[]; // the mbed logo #define RGB565CONVERT(red, green, blue) (uint16_t)( (( red >> 3 ) << 11 ) | (( green >> 2 ) << 5 ) | ( blue >> 3 )) DigitalOut led(DK_LED1); // TFT -> mosi, miso, sclk, cs SPI_TFT TFT(LCD_SDI, LCD_SDO, LCD_SCK, LCD_CS,"TFT"); // ADS7843 -> mosi, miso, sclk, cs, irq, SPI_TFT TouchScreenADS7843 TP(TP_SDI ,TP_SDO ,TP_SCK ,TP_CS ,TP_IRQ, &TFT); int main() { unsigned short LCD_id; TFT.claim(stdout); // send stdout to the TFT display TFT.background(Black); // set background to black TFT.foreground(White); // set chars to white // LCD demo // first show the 4 directions TFT.cls(); TFT.set_font((unsigned char*) Arial12x12); TFT.set_orientation(0); TFT.locate(0,0); printf(" Hello Mbed 0"); TFT.set_orientation(1); TFT.locate(0,0); printf(" Hello Mbed 1"); TFT.set_orientation(2); TFT.locate(0,0); printf(" Hello Mbed 2"); TFT.set_orientation(3); TFT.locate(0,0); printf(" Hello Mbed 3"); TFT.set_orientation(1); TFT.set_font((unsigned char*) Arial24x23); TFT.locate(50,100); printf("TFT orientation"); wait(2); // draw some graphics TFT.cls(); TFT.set_orientation(1); TFT.set_font((unsigned char*) Arial24x23); TFT.locate(120,115); printf("Graphic"); TFT.line(0,0,100,200,Green); TFT.rect(100,50,50,50,Red); TFT.fillrect(180,25,40,45,Blue); TFT.draw_ellipse(80, 150, 33, 33, White); TFT.fill_ellipse(80, 50, 33, 33, White); wait(2); TFT.cls(); TFT.draw_ellipse(160, 120, 100, 50, Yellow); TFT.draw_ellipse(160, 120, 100, 100, Blue); TFT.fill_ellipse(160, 120, 80, 40, Green); wait(2); // bigger text TFT.foreground(White); TFT.background(Blue); TFT.cls(); TFT.set_font((unsigned char*) Arial24x23); TFT.locate(0,0); printf("Different Fonts :"); TFT.set_font((unsigned char*) Neu42x35); TFT.locate(0,50); printf("Hello"); TFT.set_font((unsigned char*) Arial24x23); TFT.locate(50,100); printf("Hello"); TFT.set_font((unsigned char*) Arial12x12); TFT.locate(55,150); printf("Hello"); TFT.set_orientation(2); TFT.set_font((unsigned char*) Arial24x23); TFT.locate(10,10); printf("Hi mbed"); wait(2); // mbed logo TFT.set_orientation(1); TFT.background(Black); TFT.cls(); TFT.Bitmap(90,90,172,55,p1); // Read LCD ID TFT.set_orientation(0); LCD_id = TFT.Read_ID(); TFT.locate(10,10); printf("LCD: ILI%04X", LCD_id); wait(2); // RGB color wheel demo (cycle through all colors) TFT.cls(); TFT.foreground(Yellow); // set chars to yellow TFT.set_font((unsigned char*) Arial12x12); TFT.locate(10,10); printf("RGB color wheel (2x)"); uint8_t r = 255, g = 0, b = 0, step = 1, i; for (i=0;i<2;i++) { for(;g<255;g+=step) {TFT.fillrect(70,110,100,100,RGB565CONVERT(r, g, b));} // Cycle from FF0000 to FFFF00 : red to yellow for(;r>0;r-=step) {TFT.fillrect(70,110,100,100,RGB565CONVERT(r, g, b));} // Cycle from FFFF00 to 00FF00 : yellow to green for(;b<255;b+=step) {TFT.fillrect(70,110,100,100,RGB565CONVERT(r, g, b));} // Cycle from 00FF00 to 00FFFF : green to cyan for(;g>0;g-=step) {TFT.fillrect(70,110,100,100,RGB565CONVERT(r, g, b));} // Cycle from 00FFFF to 0000FF : cyan to blue for(;r<255;r+=step) {TFT.fillrect(70,110,100,100,RGB565CONVERT(r, g, b));} // Cycle from 0000FF to FF00FF : blue to purple for(;b>0;b-=step) {TFT.fillrect(70,110,100,100,RGB565CONVERT(r, g, b));} // Cycle from FF00FF to FF0000 : purple to red } wait(2); // Touchpanel demo TP.TouchPanel_Calibrate(); TFT.set_font((unsigned char*) Arial12x12); TFT.set_orientation(0); TFT.locate(0,0); printf(" X:"); TFT.locate(70,0); printf(" Y:"); while (1) { if (!TP._tp_irq) { if (TP.Read_Ads7846()) { TP.getDisplayPoint() ; TP.TP_DrawPoint(TP.display.x,TP.display.y, Blue); TFT.locate(25,0); printf("%03d",TP.display.x); TFT.locate(95,0); printf("%03d",TP.display.y); // Touchscreen area is larger than LCD area. // We use the bottom area outside the LCD area to clear the screen (y value > 320). if (TP.display.y > 320) { TFT.cls(); TFT.locate(0,0); printf(" X:"); TFT.locate(70,0); printf(" Y:"); } } } } } /* // ========================================================================================================= // ================================================== TWO ================================================== // ========================================================================================================= #include "stdio.h" #include "mbed.h" #include "SDFileSystem.h" #include "Mini_DK.h" // SD card SDFileSystem sd(SD_SDI, SD_SDO, SD_SCK, SD_CS, "sd"); // TFT -> mosi, miso, sclk, cs SPI_TFT TFT(LCD_SDI, LCD_SDO, LCD_SCK, LCD_CS,"TFT"); // ADS7843 -> mosi, miso, sclk, cs, irq, SPI_TFT TouchScreenADS7843 TP(TP_SDI ,TP_SDO ,TP_SCK ,TP_CS ,TP_IRQ, &TFT); int main() { TFT.background(Black); // set background to black TFT.foreground(White); // set chars to white TFT.claim(stdout); // send stdout to the TFT display TFT.cls(); TFT.set_font((unsigned char*) Arial12x12); TFT.set_orientation(1); DISABLE_LCD_MISO; int dummy = TFT.Bitmap(0,0,"/sd/house.bmp"); ENABLE_LCD_MISO; TFT.locate(0,0); printf("%02d",dummy); } */ /* // ========================================================================================================= // ================================================= THREE ================================================= // ========================================================================================================= #include "stdio.h" #include "mbed.h" #include "SDFileSystem.h" #include "Mini_DK.h" // SD card SDFileSystem sd(SD_SDI, SD_SDO, SD_SCK, SD_CS, "sd"); // TFT -> mosi, miso, sclk, cs SPI_TFT TFT(LCD_SDI, LCD_SDO, LCD_SCK, LCD_CS,"TFT"); // ADS7843 -> mosi, miso, sclk, cs, irq, SPI_TFT TouchScreenADS7843 TP(TP_SDI ,TP_SDO ,TP_SCK ,TP_CS ,TP_IRQ, &TFT); Timer timer; int main() { DISABLE_LCD_MISO; TFT.background(Black); // set background to black TFT.foreground(White); // set chars to white TFT.claim(stdout); // send stdout to the TFT display TFT.cls(); TFT.set_font((unsigned char*) Arial12x12); TFT.set_orientation(1); TFT.locate(0,200); printf("Loading from SD..."); TFT.Bitmap(0,0,"/sd/house.bmp"); TFT.locate(0,0); printf("Copying to flash..."); TFT.fileToFlash("/sd/house.bmp"); TFT.locate(0,40); printf("Done: CLS in 2 seconds"); wait(2); TFT.backgroundImage(false); TFT.cls(); wait(2); TFT.backgroundImage(true); timer.reset(); timer.start(); TFT.cls(); timer.stop(); TFT.foreground(Black); TFT.locate(0,200); printf("Wrote background in %d ms",timer.read_ms()); TFT.foreground(Black); TFT.set_orientation(3); TFT.locate(0,200); printf("Wrote background in %d ms",timer.read_ms()); wait(5); TFT.cls(); TFT.set_font((unsigned char*) Neu42x35); TFT.locate(0,50); printf("Orient = 3"); TFT.set_orientation(0); TFT.locate(0,50); printf("Orient = 0"); wait(5); TFT.set_orientation(0); TFT.cls(); TFT.locate(0,50); printf("Orient = 0"); while(1); } */