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Graphical demo for the LPC4088 Experiment Base Board with one of the Display Expansion Kits. This program displays how to write text in different fonts.
Diff: TestDisplay.cpp
- Revision:
- 0:5e5e9ec91fc8
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/TestDisplay.cpp Thu Jun 25 10:30:15 2015 +0000 @@ -0,0 +1,216 @@ +/* + * Copyright 2013 Embedded Artists AB + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +/****************************************************************************** + * Includes + *****************************************************************************/ + +#include "mbed.h" +#include "TestDisplay.h" +#include "sdram.h" + +#include "TextDemo.h" + +/****************************************************************************** + * Defines and typedefs + *****************************************************************************/ + +#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" + +#define MY_ABS(__a) (((__a) < 0) ? -(__a) : (__a)) + +/****************************************************************************** + * Public Functions + *****************************************************************************/ + +/* + Prerequisites: + + - A display must be connected to the LPC4088 Experiment Base Board + with the FPC connector + + - The touch controller uses the I2C bus so for this test to work + jumpers JP8 and JP9 on the LPC4088 Experiment Base Board must + both be in positions 1-2 + +*/ + +TestDisplay::TestDisplay(WhichDisplay which) : + _initStr(NULL), + _lcdCfg(NULL), + _lcdBoard(P0_27, P0_28), + _touch(P0_27, P0_28, P2_25) { + + switch (which) { + case TFT_5: + _lcdCfg = new LcdController::Config(LCD_CONFIGURATION_50); + _initStr = LCD_INIT_STRING_50; + break; + case TFT_4_3: + _lcdCfg = new LcdController::Config(LCD_CONFIGURATION_43); + _initStr = LCD_INIT_STRING_43; + break; + default: + mbed_die(); + } + + if (sdram_init() == 1) { + printf("Failed to initialize SDRAM\n"); + _framebuffer = 0; + } else { + _framebuffer = (uint32_t) malloc(_lcdCfg->width * _lcdCfg->height * 2 * 3); // 2 is for 16 bit color, 3 is the number of buffers + if (_framebuffer != 0) { + memset((uint8_t*)_framebuffer, 0, _lcdCfg->width * _lcdCfg->height * 2 * 3); + } + } +} + +TestDisplay::~TestDisplay() { + if (_framebuffer != 0) { + free((void*)_framebuffer); + _framebuffer = 0; + } +} + +bool TestDisplay::runTest() { + do { + if (_framebuffer == 0) { + printf("Failed to allocate memory for framebuffer\n"); + break; + } + + EaLcdBoard::Result result = _lcdBoard.open(_lcdCfg, _initStr); + if (result != EaLcdBoard::Ok) { + printf("Failed to open display, error %d\n", result); + break; + } + + result = _lcdBoard.setFrameBuffer(_framebuffer); + if (result != EaLcdBoard::Ok) { + printf("Failed to set framebuffer, error %d\n", result); + break; + } + + TextDemo textDemo((uint8_t *)_framebuffer, _lcdCfg->width, _lcdCfg->height); + while (1) { + textDemo.run(_lcdBoard, 750, 20); + } + } while(0); + + return false; +} + +void TestDisplay::calibrate_drawMarker(Graphics &g, uint16_t x, uint16_t y, bool erase) { + uint16_t color = (erase ? 0x0000 : 0xffff); + g.put_line(x-15, y, x+15, y, color); + g.put_line(x, y-15, x, y+15, color); + g.put_circle(x, y, color, 10, false); +} + +bool TestDisplay::calibrate_display() { + bool morePoints = true; + uint16_t x, y; + int point = 0; + Graphics g((uint16_t*)_framebuffer, _lcdCfg->width, _lcdCfg->height); + + do { + if (!_touch.init(_lcdCfg->width, _lcdCfg->height)) { + printf("Failed to initialize touch controller\n"); + break; + } + if (!_touch.calibrateStart()) { + printf("Failed to start calibration\n"); + break; + } + while (morePoints) { + if (point++ > 0) { + // erase old location + calibrate_drawMarker(g, x, y, true); + } + if (!_touch.getNextCalibratePoint(&x, &y)) { + printf("Failed to get calibration point\n"); + break; + } + calibrate_drawMarker(g, x, y, false); + if (!_touch.waitForCalibratePoint(&morePoints, 0)) { + printf("Failed to get user click\n"); + break; + } + } + if (morePoints) { + // aborted calibration due to error(s) + break; + } + + // erase old location + calibrate_drawMarker(g, x, y, true); + + // allow user to draw for 5999 seconds + Timer t; + t.start(); + TouchPanel::touchCoordinate_t tc; + while(t.read() < 6000) { + if (_touch.read(tc)) { + //printf("TC: x,y,z = {%5d, %5d, %5d}\n", tc.x, tc.y, tc.z); + if (tc.z) { + g.put_dot(tc.x, tc.y, 0xffff); + } + } + } + } while(0); + + return !morePoints; +}