Graphical demo for the LPC4088 Experiment Base Board with one of the Display Expansion Kits. This program displays how to use the emWin library from Segger.
Dependencies: EALib ewgui mbed
This program requires the emWin library. Instructions and more information.
EwGuiImpl.cpp
- Committer:
- embeddedartists
- Date:
- 2015-07-14
- Revision:
- 0:7f5765fcd048
File content as of revision 0:7f5765fcd048:
#include "EwGuiImpl.h" #include "LcdController.h" #include "EaLcdBoardGPIO.h" #include "sdram.h" #include "AR1021I2C.h" #define PIXEL_SIZE (2) #define LCD_CONFIGURATION_43 \ 40, /* horizontalBackPorch */ \ 5, /* horizontalFrontPorch */ \ 2, /* hsync */ \ 480, /* width */ \ 8, /* verticalBackPorch */ \ 8, /* verticalFrontPorch */ \ 2, /* vsync */ \ 272, /* height */ \ false, /* invertOutputEnable */ \ false, /* invertPanelClock */ \ true, /* invertHsync */ \ true, /* invertVsync */ \ 1, /* acBias */ \ LcdController::Bpp_16_565, /* bpp */ \ 9000000, /* optimalClock */ \ LcdController::Tft, /* panelType */ \ false /* dualPanel */ #define LCD_INIT_STRING_43 (char*)"v1,cd0,c50,cc0,c30,d100,c31,d100,cd1,d10,o,c51,cc100" #define LCD_CONFIGURATION_50 \ 46, /* horizontalBackPorch */ \ 20, /* horizontalFrontPorch */ \ 2, /* hsync */ \ 800, /* width */ \ 23, /* verticalBackPorch */ \ 10, /* verticalFrontPorch */ \ 3, /* vsync */ \ 480, /* height */ \ false, /* invertOutputEnable */ \ false, /* invertPanelClock */ \ true, /* invertHsync */ \ true, /* invertVsync */ \ 1, /* acBias */ \ LcdController::Bpp_16_565, /* bpp */ \ 30000000, /* optimalClock */ \ LcdController::Tft, /* panelType */ \ false /* dualPanel */ #define LCD_INIT_STRING_50 (char*)"v1,cc0,c31,d50,o,d200,c51,cc100" EwGuiImpl::EwGuiImpl(WhichDisplay which) { EaLcdBoardGPIO lcdBoard(P0_27, P0_28); EaLcdBoardGPIO::Result result; LcdController::Config* lcdCfg; do { switch (which) { case TFT_5: lcdCfg = new LcdController::Config(LCD_CONFIGURATION_50); result = lcdBoard.open(lcdCfg, LCD_INIT_STRING_50); break; case TFT_4_3: lcdCfg = new LcdController::Config(LCD_CONFIGURATION_43); result = lcdBoard.open(lcdCfg, LCD_INIT_STRING_43); break; default: mbed_die(); } if (result != EaLcdBoard::Ok) { printf("Failed to open display: %d\n", result); break; } _width = lcdCfg->width; _height = lcdCfg->height; // allocate buffer, width x height x 2 (2 bytes = 16 bit color data) _fb = (uint32_t)malloc(_width*_height*PIXEL_SIZE); if (_fb == 0) { printf("Failed to allocate frame buffer\n"); break; } result = lcdBoard.setFrameBuffer(_fb); if (result != EaLcdBoard::Ok) { printf("Failed to activate frameBuffer: %d\n", result); break; } _memSz = 1024*1024*5; _mem = (uint32_t)malloc(_memSz); if (_mem == 0) { printf("Failed to allocate memory block for emwin\n"); break; } memset((void*)_fb, 0x0, _width*_height*PIXEL_SIZE); // create touch panel _touch = new AR1021I2C(P0_27, P0_28, P2_25); if (!_touch->init(_width, _height)) { printf("TouchPanel.init failed\n"); break; } init(); } while(0); } void* EwGuiImpl::getMemoryBlockAddress() { return (void*)_mem; } uint32_t EwGuiImpl::getMemoryBlockSize() { return _memSz; } uint32_t EwGuiImpl::getDisplayWidth() { return _width; } uint32_t EwGuiImpl::getDisplayHeight() { return _height; } void* EwGuiImpl::getFrameBufferAddress() { return (void*)_fb; } void EwGuiImpl::getTouchValues(int32_t* x, int32_t* y, int32_t* z) { if (!x || !y || !z) return; TouchPanel::touchCoordinate_t coord; _touch->read(coord); *x = coord.x; *y = coord.y; *z = coord.z; } void EwGuiImpl::calibrate() { uint16_t x = 0; uint16_t y = 0; bool hasMorePoints = false; EwPainter painter; painter.saveContext(); do { printf("Starting calibration\n"); if (!_touch->calibrateStart()) { printf("Failed to start calibration\n"); break; } do { if (!_touch->getNextCalibratePoint(&x, &y)) { printf("Failed to get next calibrate point\n"); break; } printf("calib: x=%d, y=%d\n", x, y); drawCalibPoint(painter, x, y); if (!_touch->waitForCalibratePoint(&hasMorePoints, 0)) { printf("Failed waiting for calibration point\n"); break; } } while(hasMorePoints); printf("Calibration done\n"); } while (0); painter.clear(); painter.restoreContext(); } void EwGuiImpl::drawCalibPoint(EwPainter &painter, int32_t x, int32_t y) { painter.clear(); painter.setColor(EW_WHITE); painter.drawStringHorizCenter("Touch circle to calibrate", getDisplayWidth()/2, getDisplayHeight()/2); painter.fillCircle(x, y, 10); painter.setColor(EW_BLACK); painter.fillCircle(x, y, 5); }