Embedded Artists / lpc4088_displaymodule_ew2015

Demo for Embedded World 2015.

Dependencies:   DMBasicGUI DMSupport

Demo running on several LPC4088 Display Modules on the Embedded World 2015 exhibition.

Information

To run the demo first drag-n-drop the to_sync.fs3 file to the MBED drive and then drag-n-drop the demo itself. This way both the file system and software are up to date.

This is what the launcher will look like:

/media/uploads/embeddedartists/ew2015_cap_000.png /media/uploads/embeddedartists/ew2015_cap_002.png /media/uploads/embeddedartists/ew2015_cap_003.png /media/uploads/embeddedartists/ew2015_cap_004.png /media/uploads/embeddedartists/ew2015_cap_005.png /media/uploads/embeddedartists/ew2015_cap_006.png

AppImageViewer.cpp@1:1a01ef434a72, 2019-11-05 (annotated)

Committer:
embeddedartists
Date:
Tue Nov 05 08:20:16 2019 +0000
Revision:
1:1a01ef434a72
Parent:
0:6bd24cbb88a1 
Updates related to mbed OS 5

Who changed what in which revision?

UserRevisionLine numberNew contents of line
alindvall 0:6bd24cbb88a1 1 /*
alindvall 0:6bd24cbb88a1 2 * Copyright 2014 Embedded Artists AB
alindvall 0:6bd24cbb88a1 3 *
alindvall 0:6bd24cbb88a1 4 * Licensed under the Apache License, Version 2.0 (the "License");
alindvall 0:6bd24cbb88a1 5 * you may not use this file except in compliance with the License.
alindvall 0:6bd24cbb88a1 6 * You may obtain a copy of the License at
alindvall 0:6bd24cbb88a1 7 *
alindvall 0:6bd24cbb88a1 8 * http://www.apache.org/licenses/LICENSE-2.0
alindvall 0:6bd24cbb88a1 9 *
alindvall 0:6bd24cbb88a1 10 * Unless required by applicable law or agreed to in writing, software
alindvall 0:6bd24cbb88a1 11 * distributed under the License is distributed on an "AS IS" BASIS,
alindvall 0:6bd24cbb88a1 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
alindvall 0:6bd24cbb88a1 13 * See the License for the specific language governing permissions and
alindvall 0:6bd24cbb88a1 14 * limitations under the License.
alindvall 0:6bd24cbb88a1 15 */
alindvall 0:6bd24cbb88a1 16
alindvall 0:6bd24cbb88a1 17
alindvall 0:6bd24cbb88a1 18 #include "mbed.h"
alindvall 0:6bd24cbb88a1 19 #include "AppImageViewer.h"
alindvall 0:6bd24cbb88a1 20 #include "lpc_swim_font.h"
alindvall 0:6bd24cbb88a1 21 #include "lpc_swim_image.h"
alindvall 0:6bd24cbb88a1 22 #include "Image.h"
alindvall 0:6bd24cbb88a1 23 #include "image_data.h"
alindvall 0:6bd24cbb88a1 24
alindvall 0:6bd24cbb88a1 25 /******************************************************************************
alindvall 0:6bd24cbb88a1 26 * Defines and typedefs
alindvall 0:6bd24cbb88a1 27 *****************************************************************************/
alindvall 0:6bd24cbb88a1 28
alindvall 0:6bd24cbb88a1 29 #define BOX_SIDE 192 //256
alindvall 0:6bd24cbb88a1 30
alindvall 0:6bd24cbb88a1 31 #define BTN_WIDTH 40
alindvall 0:6bd24cbb88a1 32 #define BTN_HEIGHT 40
alindvall 0:6bd24cbb88a1 33 #define BTN_OFF 20
alindvall 0:6bd24cbb88a1 34
alindvall 0:6bd24cbb88a1 35 /******************************************************************************
alindvall 0:6bd24cbb88a1 36 * Global variables
alindvall 0:6bd24cbb88a1 37 *****************************************************************************/
alindvall 0:6bd24cbb88a1 38
alindvall 0:6bd24cbb88a1 39 /******************************************************************************
alindvall 0:6bd24cbb88a1 40 * Private functions
alindvall 0:6bd24cbb88a1 41 *****************************************************************************/
alindvall 0:6bd24cbb88a1 42
alindvall 0:6bd24cbb88a1 43 static void buttonClicked(uint32_t x)
alindvall 0:6bd24cbb88a1 44 {
alindvall 0:6bd24cbb88a1 45 bool* done = (bool*)x;
alindvall 0:6bd24cbb88a1 46 *done = true;
alindvall 0:6bd24cbb88a1 47 }
alindvall 0:6bd24cbb88a1 48
alindvall 0:6bd24cbb88a1 49 void AppImageViewer::draw()
alindvall 0:6bd24cbb88a1 50 {
alindvall 0:6bd24cbb88a1 51 // Prepare fullscreen
alindvall 0:6bd24cbb88a1 52 swim_window_open(_win,
alindvall 0:6bd24cbb88a1 53 _disp->width(), _disp->height(), // full size
alindvall 0:6bd24cbb88a1 54 (COLOR_T*)_fb1,
alindvall 0:6bd24cbb88a1 55 0,0,_disp->width()-1, _disp->height()-1, // window position and size
alindvall 0:6bd24cbb88a1 56 0, // border
alindvall 0:6bd24cbb88a1 57 BLACK, BLACK, BLACK); // colors: pen, backgr, forgr
alindvall 0:6bd24cbb88a1 58
alindvall 0:6bd24cbb88a1 59 _btn = new ImageButton(_win->fb, _win->xpmax - BTN_OFF - BTN_WIDTH, _win->ypmax - BTN_OFF - BTN_HEIGHT, BTN_WIDTH, BTN_HEIGHT);
alindvall 0:6bd24cbb88a1 60 _btn->loadImages(img_ok, img_size_ok);
alindvall 0:6bd24cbb88a1 61 }
alindvall 0:6bd24cbb88a1 62
alindvall 0:6bd24cbb88a1 63 void AppImageViewer::load(const char* file)
alindvall 0:6bd24cbb88a1 64 {
alindvall 0:6bd24cbb88a1 65 Image::ImageData_t pre = {0};
alindvall 0:6bd24cbb88a1 66
alindvall 0:6bd24cbb88a1 67 int res = Image::decode(file, Image::RES_16BIT, &pre);
alindvall 0:6bd24cbb88a1 68 if (res == 0) {
alindvall 0:6bd24cbb88a1 69 DMBoard::instance().logger()->printf("[ImageLoader] Preparing %s\n", file);
alindvall 0:6bd24cbb88a1 70 Image::ImageData_t* data = _mailbox.alloc(osWaitForever);
alindvall 0:6bd24cbb88a1 71 if (data != NULL) {
alindvall 0:6bd24cbb88a1 72 *data = pre;
alindvall 0:6bd24cbb88a1 73 _mailbox.put(data);
alindvall 0:6bd24cbb88a1 74 } else {
alindvall 0:6bd24cbb88a1 75 DMBoard::instance().logger()->printf("[ImageLoader] Failed to get memory to prepare %s\n", file);
alindvall 0:6bd24cbb88a1 76 }
alindvall 0:6bd24cbb88a1 77 }
alindvall 0:6bd24cbb88a1 78 }
alindvall 0:6bd24cbb88a1 79
alindvall 0:6bd24cbb88a1 80 static bool recursiveProcessFS(char* buff, const char* name, unsigned int maxLen, AppImageViewer* app, int depth, int maxDepth)
alindvall 0:6bd24cbb88a1 81 {
alindvall 0:6bd24cbb88a1 82 if (depth > maxDepth) {
alindvall 0:6bd24cbb88a1 83 return true;
alindvall 0:6bd24cbb88a1 84 }
alindvall 0:6bd24cbb88a1 85 uint32_t len = strlen(buff);
alindvall 0:6bd24cbb88a1 86 if (len > 0) {
alindvall 0:6bd24cbb88a1 87 if (buff[len - 1] != '/') {
alindvall 0:6bd24cbb88a1 88 buff[len++] = '/';
alindvall 0:6bd24cbb88a1 89 buff[len] = '\0';
alindvall 0:6bd24cbb88a1 90 }
alindvall 0:6bd24cbb88a1 91 }
alindvall 0:6bd24cbb88a1 92 if ((strlen(name) + len) >= maxLen) {
alindvall 0:6bd24cbb88a1 93 // avoid memory overwrite due to too long file path
alindvall 0:6bd24cbb88a1 94 return true;
alindvall 0:6bd24cbb88a1 95 }
alindvall 0:6bd24cbb88a1 96 strcat(buff, name);
alindvall 0:6bd24cbb88a1 97 len += strlen(name);
alindvall 0:6bd24cbb88a1 98
alindvall 0:6bd24cbb88a1 99 DIR *d = opendir(buff);
alindvall 0:6bd24cbb88a1 100 bool result = true; // success
alindvall 0:6bd24cbb88a1 101 if (d != NULL) {
alindvall 0:6bd24cbb88a1 102 struct dirent *p;
alindvall 0:6bd24cbb88a1 103 while (result && ((p = readdir(d)) != NULL)) {
alindvall 0:6bd24cbb88a1 104 result = recursiveProcessFS(buff, p->d_name, maxLen, app, depth+1, maxDepth);
alindvall 0:6bd24cbb88a1 105 buff[len] = '\0';
alindvall 0:6bd24cbb88a1 106 }
alindvall 0:6bd24cbb88a1 107 closedir(d);
alindvall 0:6bd24cbb88a1 108 } else {
alindvall 0:6bd24cbb88a1 109 // a file
alindvall 0:6bd24cbb88a1 110 if (len > 3) {
alindvall 0:6bd24cbb88a1 111 if ((strncasecmp(buff+len-4, ".bmp", 4)==0) ||
alindvall 0:6bd24cbb88a1 112 (strncasecmp(buff+len-4, ".png", 4)==0) ||
alindvall 0:6bd24cbb88a1 113 (strncasecmp(buff+len-4, ".raw", 4)==0)) {
alindvall 0:6bd24cbb88a1 114 DMBoard::instance().logger()->printf("[ImageLoader] found %s\n", buff);
alindvall 0:6bd24cbb88a1 115 app->load(buff);
alindvall 0:6bd24cbb88a1 116 }
alindvall 0:6bd24cbb88a1 117 }
alindvall 0:6bd24cbb88a1 118 }
alindvall 0:6bd24cbb88a1 119 return result;
alindvall 0:6bd24cbb88a1 120 }
alindvall 0:6bd24cbb88a1 121
alindvall 0:6bd24cbb88a1 122 static void loaderTask(void const* args)
alindvall 0:6bd24cbb88a1 123 {
alindvall 0:6bd24cbb88a1 124 char* buff = (char*)malloc(512);
alindvall 0:6bd24cbb88a1 125 if (buff != NULL)
alindvall 0:6bd24cbb88a1 126 {
alindvall 0:6bd24cbb88a1 127 DMBoard::instance().logger()->printf("Recursive list of file and folders in /mci/\n");
alindvall 0:6bd24cbb88a1 128 buff[0] = '\0';
alindvall 0:6bd24cbb88a1 129 recursiveProcessFS(buff, "/mci/", 512, (AppImageViewer*)args, 0, 2);
alindvall 0:6bd24cbb88a1 130 DMBoard::instance().logger()->printf("Recursive list of file and folders in /usb/\n");
alindvall 0:6bd24cbb88a1 131 buff[0] = '\0';
alindvall 0:6bd24cbb88a1 132 recursiveProcessFS(buff, "/usb/", 512, (AppImageViewer*)args, 0, 2);
alindvall 0:6bd24cbb88a1 133 DMBoard::instance().logger()->printf("Recursive list of file and folders in /qspi/\n");
alindvall 0:6bd24cbb88a1 134 buff[0] = '\0';
alindvall 0:6bd24cbb88a1 135 recursiveProcessFS(buff, "/qspi/", 512, (AppImageViewer*)args, 0, 2);
alindvall 0:6bd24cbb88a1 136 free(buff);
alindvall 0:6bd24cbb88a1 137 }
alindvall 0:6bd24cbb88a1 138 DMBoard::instance().logger()->printf("loaderTask done\n");
alindvall 0:6bd24cbb88a1 139 }
alindvall 0:6bd24cbb88a1 140
alindvall 0:6bd24cbb88a1 141 /******************************************************************************
alindvall 0:6bd24cbb88a1 142 * Public functions
alindvall 0:6bd24cbb88a1 143 *****************************************************************************/
alindvall 0:6bd24cbb88a1 144
alindvall 0:6bd24cbb88a1 145 AppImageViewer::AppImageViewer() : _disp(NULL), _win(NULL), _fb1(NULL), _fb2(NULL), _btn(NULL), _active(0)
alindvall 0:6bd24cbb88a1 146 {
alindvall 0:6bd24cbb88a1 147 }
alindvall 0:6bd24cbb88a1 148
alindvall 0:6bd24cbb88a1 149 AppImageViewer::~AppImageViewer()
alindvall 0:6bd24cbb88a1 150 {
alindvall 0:6bd24cbb88a1 151 teardown();
alindvall 0:6bd24cbb88a1 152 }
alindvall 0:6bd24cbb88a1 153
alindvall 0:6bd24cbb88a1 154 bool AppImageViewer::setup()
alindvall 0:6bd24cbb88a1 155 {
alindvall 0:6bd24cbb88a1 156 _disp = DMBoard::instance().display();
alindvall 0:6bd24cbb88a1 157 _win = (SWIM_WINDOW_T*)malloc(sizeof(SWIM_WINDOW_T));
alindvall 0:6bd24cbb88a1 158 _fb1 = _disp->allocateFramebuffer();
alindvall 0:6bd24cbb88a1 159 _fb2 = _disp->allocateFramebuffer();
alindvall 0:6bd24cbb88a1 160
alindvall 0:6bd24cbb88a1 161 return (_win != NULL && _fb1 != NULL && _fb2 != NULL);
alindvall 0:6bd24cbb88a1 162 }
alindvall 0:6bd24cbb88a1 163
alindvall 0:6bd24cbb88a1 164 void AppImageViewer::runToCompletion()
alindvall 0:6bd24cbb88a1 165 {
alindvall 0:6bd24cbb88a1 166 // Alternative 1: use the calling thread's context to run in
alindvall 0:6bd24cbb88a1 167 bool done = false;
alindvall 0:6bd24cbb88a1 168 draw();
alindvall 0:6bd24cbb88a1 169 _btn->setAction(buttonClicked, (uint32_t)&done);
alindvall 0:6bd24cbb88a1 170 void* oldFB = _disp->swapFramebuffer(_fb1);
alindvall 0:6bd24cbb88a1 171
alindvall 0:6bd24cbb88a1 172 _active = 1;
alindvall 0:6bd24cbb88a1 173
alindvall 0:6bd24cbb88a1 174 Thread* tLoader = new Thread(loaderTask, this, osPriorityNormal, 8192);
alindvall 0:6bd24cbb88a1 175
alindvall 0:6bd24cbb88a1 176 bool first = true;
alindvall 0:6bd24cbb88a1 177 Timer t;
alindvall 0:6bd24cbb88a1 178 while(!done) {
alindvall 0:6bd24cbb88a1 179 osEvent evt = _mailbox.get(1000);
alindvall 0:6bd24cbb88a1 180 if (evt.status == osEventMail) {
alindvall 0:6bd24cbb88a1 181 COLOR_T* fb;
alindvall 0:6bd24cbb88a1 182 if (_active == 1) {
alindvall 0:6bd24cbb88a1 183 // render on the second frame buffer
alindvall 0:6bd24cbb88a1 184 fb = (COLOR_T*)_fb2;
alindvall 0:6bd24cbb88a1 185 } else {
alindvall 0:6bd24cbb88a1 186 // render on the first frame buffer
alindvall 0:6bd24cbb88a1 187 fb = (COLOR_T*)_fb1;
alindvall 0:6bd24cbb88a1 188 }
alindvall 0:6bd24cbb88a1 189 _win->fb = fb;
alindvall 0:6bd24cbb88a1 190 Image::ImageData_t* data = (Image::ImageData_t*)evt.value.p;
alindvall 0:6bd24cbb88a1 191 swim_put_image_xy(_win, (COLOR_T*)data->pixels, data->width, data->height, _disp->width()-data->width, _disp->height()-data->height);
alindvall 0:6bd24cbb88a1 192 free(data->pointerToFree);
alindvall 0:6bd24cbb88a1 193 _mailbox.free(data);
alindvall 0:6bd24cbb88a1 194 if (first) {
alindvall 0:6bd24cbb88a1 195 first = false;
alindvall 0:6bd24cbb88a1 196 t.start();
alindvall 0:6bd24cbb88a1 197 } else {
alindvall 0:6bd24cbb88a1 198 while (t.read_ms() < 2000) {
alindvall 0:6bd24cbb88a1 199 Thread::wait(100);
alindvall 0:6bd24cbb88a1 200 }
alindvall 0:6bd24cbb88a1 201 }
alindvall 0:6bd24cbb88a1 202 _disp->setFramebuffer(fb);
alindvall 0:6bd24cbb88a1 203 _active = (_active == 1 ? 2 : 1);
alindvall 0:6bd24cbb88a1 204 t.reset();
alindvall 0:6bd24cbb88a1 205 } else if (tLoader->get_state() == Thread::Inactive) {
alindvall 0:6bd24cbb88a1 206 // No more images in the queue and the loader thread
alindvall 0:6bd24cbb88a1 207 // has completed its search
alindvall 0:6bd24cbb88a1 208 break;
alindvall 0:6bd24cbb88a1 209 }
alindvall 0:6bd24cbb88a1 210 }
alindvall 0:6bd24cbb88a1 211
alindvall 0:6bd24cbb88a1 212 delete tLoader;
alindvall 0:6bd24cbb88a1 213
alindvall 0:6bd24cbb88a1 214 // The button must be drawn on the current framebuffer
alindvall 0:6bd24cbb88a1 215 _btn->draw(_win->fb);
alindvall 0:6bd24cbb88a1 216
alindvall 0:6bd24cbb88a1 217 // Wait for touches, but the AppLauncher is already listening
alindvall 0:6bd24cbb88a1 218 // for new touch event and sends a signal to its thread which
alindvall 0:6bd24cbb88a1 219 // is the same as runs this function so it is enough to wait
alindvall 0:6bd24cbb88a1 220 // for that signal.
alindvall 0:6bd24cbb88a1 221 TouchPanel* touch = DMBoard::instance().touchPanel();
alindvall 0:6bd24cbb88a1 222 touch_coordinate_t coord;
alindvall 0:6bd24cbb88a1 223 while(!done) {
alindvall 0:6bd24cbb88a1 224 Thread::signal_wait(0x1);
alindvall 0:6bd24cbb88a1 225 if (touch->read(coord) == TouchPanel::TouchError_Ok) {
alindvall 0:6bd24cbb88a1 226 if (_btn->handle(coord.x, coord.y, coord.z > 0)) {
alindvall 0:6bd24cbb88a1 227 _btn->draw();
alindvall 0:6bd24cbb88a1 228 }
alindvall 0:6bd24cbb88a1 229 }
alindvall 0:6bd24cbb88a1 230 }
alindvall 0:6bd24cbb88a1 231
alindvall 0:6bd24cbb88a1 232 // User has clicked the button, restore the original FB
alindvall 0:6bd24cbb88a1 233 _disp->swapFramebuffer(oldFB);
alindvall 0:6bd24cbb88a1 234 swim_window_close(_win);
alindvall 0:6bd24cbb88a1 235 }
alindvall 0:6bd24cbb88a1 236
alindvall 0:6bd24cbb88a1 237 bool AppImageViewer::teardown()
alindvall 0:6bd24cbb88a1 238 {
alindvall 0:6bd24cbb88a1 239 if (_win != NULL) {
alindvall 0:6bd24cbb88a1 240 free(_win);
alindvall 0:6bd24cbb88a1 241 _win = NULL;
alindvall 0:6bd24cbb88a1 242 }
alindvall 0:6bd24cbb88a1 243 if (_fb1 != NULL) {
alindvall 0:6bd24cbb88a1 244 free(_fb1);
alindvall 0:6bd24cbb88a1 245 _fb1 = NULL;
alindvall 0:6bd24cbb88a1 246 }
alindvall 0:6bd24cbb88a1 247 if (_fb2 != NULL) {
alindvall 0:6bd24cbb88a1 248 free(_fb2);
alindvall 0:6bd24cbb88a1 249 _fb2 = NULL;
alindvall 0:6bd24cbb88a1 250 }
alindvall 0:6bd24cbb88a1 251 if (_btn != NULL) {
alindvall 0:6bd24cbb88a1 252 delete _btn;
alindvall 0:6bd24cbb88a1 253 _btn = NULL;
alindvall 0:6bd24cbb88a1 254 }
alindvall 0:6bd24cbb88a1 255 return true;
alindvall 0:6bd24cbb88a1 256 }
alindvall 0:6bd24cbb88a1 257
alindvall 0:6bd24cbb88a1 258
alindvall 0:6bd24cbb88a1 259