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Example using the GFX graphical library, EaLcdBoard, TSC2046 touch screen and SDRAM initialization
Diff: main.cpp
- Revision:
- 0:79a419828f86
- Child:
- 2:661a997f0ec7
diff -r 000000000000 -r 79a419828f86 main.cpp --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/main.cpp Thu Sep 26 07:59:11 2013 +0000 @@ -0,0 +1,333 @@ + +/****************************************************************************** + * Includes + *****************************************************************************/ + +#include "mbed.h" + + +#include "LcdController.h" +#include "EaLcdBoard.h" +#include "TSC2046.h" +#include "sdram.h" + +#include "wchar.h" +#include "GFXFb.h" + + + +/****************************************************************************** + * Typedefs and defines + *****************************************************************************/ + + +/****************************************************************************** + * Local variables + *****************************************************************************/ + +// EA LCD Board interface +static EaLcdBoard lcdBoard(P0_27, P0_28); + +// touch interface +static TSC2046 touch(P2_27, P2_26, P2_22, P2_21); + +static uint16_t const colors[16] = { + BLACK, + LIGHTGRAY, + DARKGRAY, + WHITE, + RED, + GREEN, + BLUE, + MAGENTA, + CYAN, + YELLOW, + LIGHTRED, + LIGHTGREEN, + LIGHTBLUE, + LIGHTMAGENTA, + LIGHTCYAN, + LIGHTYELLOW +}; + +/****************************************************************************** + * Local functions + *****************************************************************************/ + +static uint16_t random(uint16_t max) +{ + uint16_t temp; + + temp = rand(); + temp = temp % max; + return temp; +} + +static void demo1(GFXFb &gfx) { + + int16_t x0 = 0; + int16_t y0 = 0; + int16_t radius = 0; + int color = 0; + int fill = 0; + + + gfx.fillScreen(BLACK); + + for (int i = 0; i < 100; i++) { + x0 = random(gfx.width()); + y0 = random(gfx.height()); + color = random(16); + radius = random(50); + fill = random(2); + + if (!fill) { + gfx.drawCircle(x0, y0, radius, colors[color]); + } else { + gfx.fillCircle(x0, y0, radius, colors[color]); + } + + wait_ms(10); + } + +} + + +static void demo2(GFXFb &gfx) { + int32_t margin = 5; + int32_t rowHeight = gfx.height() / 3; + int32_t colWidth = gfx.width() / 3; + int32_t graphPosX = gfx.getStringWidth("drawRoundRect"); + int32_t maxGraphW = colWidth - graphPosX; + + gfx.fillScreen(BLACK); + + // ############## + // C O L U M N 1 + // ############## + + // drawLine + gfx.setCursor(0, rowHeight/2); + gfx.writeString("drawLine"); + gfx.drawLine(0+graphPosX+margin, margin, + 0+graphPosX+maxGraphW-margin, rowHeight-margin, colors[1]); + + // drawRect + gfx.setCursor(0, rowHeight+rowHeight/2); + gfx.writeString("drawRect"); + gfx.drawRect(0+graphPosX+margin, rowHeight+margin, + maxGraphW-2*margin, rowHeight-margin, colors[2]); + + // fillRect + gfx.setCursor(0, rowHeight*2+rowHeight/2); + gfx.writeString("fillRect"); + gfx.fillRect(0+graphPosX+margin, rowHeight*2+margin, + maxGraphW-2*margin, rowHeight-margin, colors[3]); + + // ############## + // C O L U M N 2 + // ############## + + // drawCircle + gfx.setCursor(colWidth, rowHeight/2); + gfx.writeString("drawCircle"); + gfx.drawCircle(colWidth+graphPosX+maxGraphW/2, rowHeight/2, + rowHeight/2-2*margin, colors[4]); + + // fillCircle + gfx.setCursor(colWidth, rowHeight+rowHeight/2); + gfx.writeString("fillCircle"); + gfx.fillCircle(colWidth+graphPosX+maxGraphW/2, rowHeight+rowHeight/2, + rowHeight/2-2*margin, colors[5]); + + // drawTriangle + gfx.setCursor(colWidth, rowHeight*2+rowHeight/2); + gfx.writeString("drawTriangle"); + gfx.drawTriangle(colWidth+graphPosX+margin, rowHeight*3-margin, + colWidth+graphPosX+maxGraphW/2, rowHeight*2+margin, + colWidth+graphPosX+maxGraphW-margin, rowHeight*3-margin, colors[6]); + + // ############## + // C O L U M N 3 + // ############## + + // fillTriangle + gfx.setCursor(colWidth*2, rowHeight/2); + gfx.writeString("fillTriangle"); + gfx.fillTriangle(colWidth*2+graphPosX+margin, rowHeight-margin, + colWidth*2+graphPosX+maxGraphW/2, margin, + colWidth*2+graphPosX+maxGraphW-margin, rowHeight-margin, colors[7]); + + + // drawRoundRect + gfx.setCursor(colWidth*2, rowHeight+rowHeight/2); + gfx.writeString("drawRoundRect"); + gfx.drawRoundRect(colWidth*2+graphPosX+margin, rowHeight+margin, + maxGraphW-2*margin, rowHeight-margin, 10, colors[8]); + + // fillRoundRect + gfx.setCursor(colWidth*2, rowHeight*2+rowHeight/2); + gfx.writeString("fillRoundRect"); + gfx.fillRoundRect(colWidth*2+graphPosX+margin, rowHeight*2+margin, + maxGraphW-2*margin, rowHeight-margin, 10, colors[9]); + + +} + +static void drawCalibPoint(GFXFb &gfx, TSC2046::touchCoordinate_t &coord) +{ + gfx.fillScreen(BLACK); + gfx.setCursor(0, 0); + gfx.writeString("Calibrate Touch Screen"); + gfx.drawRect(coord.x-5, coord.y-5, 10, 10, WHITE); +} + +static void touchCalibrate(GFXFb &gfx) +{ + TSC2046::touchCoordinate_t coord; + TSC2046::touchCoordinate_t ref1 = {15, gfx.height()-15}; + TSC2046::touchCoordinate_t ref2 = {gfx.width()/2, 80}; + TSC2046::touchCoordinate_t ref3 = {gfx.width()-15, gfx.height()-15}; + TSC2046::touchCoordinate_t scr1 = {0,0}; + TSC2046::touchCoordinate_t scr2 = {0,0}; + TSC2046::touchCoordinate_t scr3 = {0,0}; + + bool calibrated = false; + bool releaseNeeded = false; + bool touchReleased = false; + + int calibPoint = 0; + + drawCalibPoint(gfx, ref1); + + while(!calibrated) { + wait_ms(100); + + touch.read(coord); + + if (coord.z == 0) { + touchReleased = true; + continue; + } + + if (releaseNeeded && !touchReleased) { + continue; + } + + touchReleased = false; + + switch(calibPoint++) { + case 0: + scr1.x = coord.x; + scr1.y = coord.y; + drawCalibPoint(gfx, ref2); + + releaseNeeded = true; + break; + case 1: + scr2.x = coord.x; + scr2.y = coord.y; + drawCalibPoint(gfx, ref3); + + releaseNeeded = true; + break; + case 2: + scr3.x = coord.x; + scr3.y = coord.y; + + releaseNeeded = true; + + touch.calibrate(ref1, ref2, ref3, scr1, scr2, scr3); + calibrated = true; + break; + } + } + + gfx.fillScreen(BLACK); +} + + +static void demo3(GFXFb &gfx) { + TSC2046::touchCoordinate_t coord; + + touchCalibrate(gfx); + + while(1) { + touch.read(coord); + if (coord.z > 0) { + gfx.drawPixel(coord.x, coord.y, WHITE); + } + } +} + +/****************************************************************************** + * Main function + *****************************************************************************/ + + +int main (void) { + bool initSuccessful = false; + + EaLcdBoard::Result result; + LcdController::Config lcdCfg; + uint32_t frameBuf1 = (uint32_t) SDRAM_BASE; + + + // framebuffer is put in SDRAM + if (sdram_init() == 1) { + printf("Failed to initialize SDRAM\n"); + return 1; + } + + + do { + + result = lcdBoard.open(NULL, NULL); + if (result != EaLcdBoard::Ok) { + printf("Failed to open display: %d\n", result); + break; + } + + result = lcdBoard.setFrameBuffer(frameBuf1); + if (result != EaLcdBoard::Ok) { + printf("Failed to activate frameBuffer: %d\n", result); + break; + } + + result = lcdBoard.getLcdConfig(&lcdCfg); + if (result != EaLcdBoard::Ok) { + printf("Failed to get LCD configuration: %d\n", result); + break; + } + + memset((void*)frameBuf1, 0x0, lcdCfg.width*lcdCfg.height*2); + + initSuccessful = true; + + + } while(0); + + + + + if (initSuccessful) { + + GFXFb gfx(lcdCfg.width, lcdCfg.height, (uint16_t*)frameBuf1); + + while (1) { + demo1(gfx); + wait_ms(5000); + demo2(gfx); + wait_ms(15000); + demo3(gfx); + } + + } + else { + printf("Couldn't start demo -> Initialization failed\n"); + } + + + return 0; +} +