Initial commit

.gitignore

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+build

.gitmodules

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+[submodule "PSE-firmware"]
+	path = PSE-firmware
+	url = ssh://git@git.leserveurdansmongrenier.uk:16822/leo/PSE-firmware.git

CMakeLists.txt

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+cmake_minimum_required(VERSION 3.10)
+project(lvgl)
+set(CMAKE_C_STANDARD 11)
+set(CMAKE_CXX_STANDARD 17)
+set(CMAKE_CXX_STANDARD_REQUIRED ON)
+
+INCLUDE_DIRECTORIES(${PROJECT_SOURCE_DIR})
+
+file(GLOB_RECURSE INCLUDES "./*.h" )
+
+SET(CMAKE_CXX_FLAGS "-O3")
+
+find_package(SDL2 REQUIRED SDL2)
+include_directories(${SDL2_INCLUDE_DIRS})
+
+add_subdirectory(PSE-firmware/Drivers/lvgl)
+include_directories(PSE-firmware/Core/Inc)
+add_executable(main main.c PSE-firmware/Core/Src/logo_mint_resize.c ${SOURCES} ${INCLUDES})
+add_compile_definitions(LV_CONF_INCLUDE_SIMPLE)
+target_link_libraries(main PRIVATE lvgl ${SDL2_LIBRARIES})
+add_custom_target (run COMMAND ${EXECUTABLE_OUTPUT_PATH}/main)
+
+target_compile_options(lvgl PRIVATE -Werror -Werror=float-conversion)

PSE-firmware

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+Subproject commit 6dd655d9e53d23e108c46d089ec33f753eed7aa1

main.c

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+#include <SDL2/SDL.h>
+#include <SDL2/SDL_pixels.h>
+#include <pthread.h>
+#include <unistd.h>
+#include "lvgl.h"
+
+#include "main.h"
+
+#define BUFF_SIZE (320 * 10)
+#define LCD_WIDTH 320
+#define LCD_HEIGHT 240
+
+static lv_disp_draw_buf_t disp_buf;
+
+static lv_color_t buf_1[BUFF_SIZE];
+
+SDL_Window* window = NULL;
+  
+SDL_Surface* screenSurface = NULL;
+
+
+int main(int argc, char** argv){
+  if(SDL_Init( SDL_INIT_VIDEO ) < 0){
+    printf("SDL could not initialize! SDL_Error: %s\n", SDL_GetError());
+    exit(-1);
+  }
+
+  window = SDL_CreateWindow( "SDL Tutorial", SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED, LCD_WIDTH, LCD_HEIGHT, SDL_WINDOW_SHOWN );
+  if(window == NULL){
+    printf("Window could not be created! SDL_Error: %s\n", SDL_GetError());
+  }
+  screenSurface = SDL_GetWindowSurface(window);
+   
+  lv_init();
+
+  lv_disp_draw_buf_init(&disp_buf, buf_1, NULL, BUFF_SIZE);
+
+  lv_disp_drv_t disp_drv;
+  lv_disp_drv_init(&disp_drv);
+  disp_drv.draw_buf = &disp_buf;
+  disp_drv.hor_res = LCD_WIDTH;
+  disp_drv.ver_res = LCD_HEIGHT;
+  disp_drv.flush_cb = &my_flush_cb;
+  lv_disp_drv_register(&disp_drv);
+
+  lv_disp_t * disp = lv_disp_drv_register(&disp_drv);
+
+  lv_indev_drv_t indev_drv;
+  lv_indev_drv_init(&indev_drv);
+  indev_drv.type = LV_INDEV_TYPE_POINTER;
+  indev_drv.read_cb = &touchscreen_read_callback;
+  lv_indev_t * my_indev = lv_indev_drv_register(&indev_drv);
+
+  LV_IMG_DECLARE(logo_mint_resize);
+  lv_obj_t * logo_mint = lv_img_create(lv_scr_act());
+  lv_img_set_src(logo_mint, &logo_mint_resize);
+
+  lv_obj_set_style_bg_color(lv_scr_act(), lv_color_hex(0x0), LV_PART_MAIN);
+
+  lv_obj_align(logo_mint, LV_ALIGN_CENTER, 0, 0);
+  lv_obj_set_size(logo_mint, 320, 240);
+
+  lv_obj_t* cursor_pos = lv_label_create(lv_scr_act());
+  lv_obj_t* cursor = lv_label_create(lv_scr_act());
+  lv_label_set_text(cursor, "A");
+  lv_indev_set_cursor(my_indev, cursor);
+
+  pthread_t tickThread;
+	pthread_create(&tickThread, NULL, tick_thread, NULL);
+  
+  while(1){
+  	lv_timer_handler();
+    int x,y;
+    Uint32 button = SDL_GetMouseState(&x, &y);
+  	lv_label_set_text_fmt(cursor_pos, "%d : %d", x, y);
+    SDL_Event e;
+    SDL_PollEvent(&e);
+    if(e.type == SDL_QUIT)
+      break;
+  }
+
+  SDL_DestroyWindow(window);
+
+  SDL_Quit();
+}
+
+void my_flush_cb(lv_disp_drv_t * disp, const lv_area_t * area, lv_color_t * buf){
+  int32_t x, y;
+  for(y = area->y1; y <= area->y2; y++) {
+      for(x = area->x1; x <= area->x2; x++) {
+        Uint32 * const target_pixel = (Uint32 *) ((Uint8 *) screenSurface->pixels + y * screenSurface->pitch + x * screenSurface->format->BytesPerPixel);
+        Uint16 col = *(Uint16*)buf;
+        *target_pixel = SDL_MapRGB(screenSurface->format, (col & 0xF800) >> 8, (col & 0x07E0) >> 3, (col & 0x001F) << 3);
+        buf++;
+      }
+  }
+  SDL_UpdateWindowSurface(window);
+
+  /* IMPORTANT!!!
+   * Inform LVGL that you are ready with the flushing and buf is not used anymore*/
+  lv_disp_flush_ready(disp);
+}
+
+void touchscreen_read_callback(lv_indev_drv_t * drv, lv_indev_data_t*data){
+  int x, y;
+  Uint32 button = SDL_GetMouseState(&x, &y);
+  if(SDL_BUTTON(1)) {
+    data->state = LV_INDEV_STATE_PRESSED;
+  } else {
+    data->state = LV_INDEV_STATE_RELEASED;
+  }
+  data->point.x = x;
+  data->point.y = y;
+}
+
+void * tick_thread (void *args){
+  while(1) {
+    usleep(5*1000);   /*Sleep for 5 millisecond*/
+    lv_tick_inc(5);      /*Tell LVGL that 5 milliseconds were elapsed*/
+  }
+}

main.h

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+void my_flush_cb(lv_disp_drv_t * disp, const lv_area_t * area, lv_color_t * buf);
+void touchscreen_read_callback(lv_indev_drv_t * drv, lv_indev_data_t*data);
+void * tick_thread (void *args);