Example that shows how to use the ewgui wrapper classes in combination with Segger's emwin library.
Dependencies: EALib ewgui mbed
EwGuiImpl.cpp
- Committer:
- embeddedartists
- Date:
- 2013-12-16
- Revision:
- 0:6b81fd4666bb
File content as of revision 0:6b81fd4666bb:
#include "EwGuiImpl.h" #include "LcdController.h" #include "EaLcdBoard.h" #include "sdram.h" #include "AR1021.h" #include "TSC2046.h" #define PIXEL_SIZE (2) EwGuiImpl::EwGuiImpl() { EaLcdBoard lcdBoard(P0_27, P0_28); EaLcdBoard::Result result; LcdController::Config lcdCfg; EaLcdBoard::TouchParams_t touchParams; do { result = lcdBoard.open(NULL, NULL); if (result != EaLcdBoard::Ok) { printf("Failed to open display: %d\n", result); break; } result = lcdBoard.getLcdConfig(&lcdCfg); if (result != EaLcdBoard::Ok) { printf("Failed to get LCD configuration: %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); result = lcdBoard.getTouchParameters(&touchParams); if (result != EaLcdBoard::Ok) { printf("Failed to get touch panel parameters: %d\n", result); break; } // create touch panel switch(touchParams.panelId) { case EaLcdBoard::TouchPanel_AR1021: printf("creating AR1021 touch panel\n"); _touch = new AR1021(P2_27, P2_26, P2_22, P2_21, P2_25); break; case EaLcdBoard::TouchPanel_TSC2046: case EaLcdBoard::TouchPanelUnknown: default: // we always default to TSC2046 even if we cannot // detect which panel is used printf("creating TSC2046 touch panel\n"); _touch = new TSC2046(P2_27, P2_26, P2_22, P2_21); break; } 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); }