[GD32F303]

【星空派GD32F303开发板试用体验】+LVGL移植

qjp1988113

2021-11-9 09:43:35 3184 试用开发板

1 今天有点空，我们移植一下LVGL~ 先看效果图：在这之前，我们得调试好屏幕及触摸~ 我们以之前的LCD那个程序为模板，开始添加LVGL文件。先下载LVGL源文件包： lvgl-master.zip (725.23 KB, 下载次数: 13 ) 删去一些不必要的，整理成： GUI.rar (2.51 MB, 下载次数: 34 ) 解压下来，将GUI添加进工程：其中由于LVGL的特性，需要添加C99支持，并屏蔽一些类型的警告：勾选C99,并在Misc Controls 中填入 --diag_suppress=68 --diag_supp ress=111 --diag_suppress=550：添加LVGL的心跳，这了由于已经用了SYStiCK作为延时定时器。我们这了新开一个定时器1，并设定为1ms中断，为LVGL提供心跳节拍~ #include "timer.h" #include "lvgl.h" //1秒产生一次中断 int_time = CLK / ((prescaler+1) * (period+1)) void TIM1_Int_Init(u16 arr,u16 psc) { timer_parameter_struct timer_parameter; rcu_periph_clock_enable(RCU_TIMER1); //预分频 timer_parameter.prescaler = psc, //对齐模式 timer_parameter.alignedmode = TIMER_COUNTER_EDGE, //定时器增长方向 timer_parameter.counterdirection = TIMER_COUNTER_UP, //定时器自动加载值 timer_parameter.period = arr, //时钟分频值 timer_parameter.clockdivision = TIMER_CKDIV_DIV4, timer_init(TIMER1, &timer_parameter); timer_interrupt_enable(TIMER1, TIMER_INT_UP); nvic_irq_enable(TIMER1_IRQn, 0, 2); timer_enable(TIMER1); } void TIMER1_IRQHandler() { if (timer_interrupt_flag_get(TIMER1, TIMER_INT_UP) != RESET) { lv_tick_inc(1);//lvgl的1ms心跳 timer_interrupt_flag_clear(TIMER1, TIMER_INT_UP); } } 复制代码在main初始化里面设定： TIM1_Int_Init(999,119);//定时器初始化(1ms 中断),用于给 lvgl 提供 1ms 的心跳节拍复制代码其余就是一些常见的config的配置：对lv_conf.h进行如下修改： /** * [url=home.php?mod=space&uid=1455510]@file[/url] lv_conf.h * / / * COPY THIS FILE AS `lv_conf.h` NEXT TO the `lvgl` FOLDER / #if 1 /Set it to "1" to enable content/ #ifndef LV_CONF_H #define LV_CONF_H / clang-format off / #include /==================== Graphical settings ====================/ /* Maximal horizontal and vertical resolution to support by the library./ #define LV_HOR_RES_MAX (320) //320 #define LV_VER_RES_MAX (480) //480 / Color depth: * - 1: 1 byte per pixel * - 8: RGB233 * - 16: RGB565 * - 32: ARGB8888 / #define LV_COLOR_DEPTH 16 / Swap the 2 bytes of RGB565 color. * Useful if the display has a 8 bit interface (e.g. SPI)/ #define LV_COLOR_16_SWAP 0 / 1: Enable screen transparency. * Useful for OSD or other overlapping GUIs. * Requires `LV_COLOR_DEPTH = 32` colors and the screen's style should be modified: `style.body.opa = ...`/ #define LV_COLOR_SCREEN_TRANSP 0 /Images pixels with this color will not be drawn (with chroma keying)/ #define LV_COLOR_TRANSP LV_COLOR_LIME /LV_COLOR_LIME: pure green/ / Enable anti-aliasing (lines, and radiuses will be smoothed) / #define LV_ANTIALIAS 1 / Default display refresh period. * Can be changed in the display driver (`lv_disp_drv_t`)./ #define LV_DISP_DEF_REFR_PERIOD 30 /[ms]/ / Dot Per Inch: used to initialize default sizes. * E.g. a button with width = LV_DPI / 2 -> half inch wide * (Not so important, you can adjust it to modify default sizes and spaces)/ #define LV_DPI 60 /[px]/ / Type of coordinates. Should be `int16_t` (or `int32_t` for extreme cases) / typedef int16_t lv_coord_t; /========================= Memory manager settings =========================/ /* LittelvGL's internal memory manager's settings. * The graphical objects and other related data are stored here. / / 1: use custom malloc/free, 0: use the built-in `lv_mem_alloc` and `lv_mem_free` / #define LV_MEM_CUSTOM 0 #if LV_MEM_CUSTOM == 0 / Size of the memory used by `lv_mem_alloc` in bytes (>= 2kB)/ # define LV_MEM_SIZE (16U 1024U) /* Complier prefix for a big array declaration / # define LV_MEM_ATTR / Set an address for the memory pool instead of allocating it as an array. * Can be in external SRAM too. / # define LV_MEM_ADR 0 / Automatically defrag. on free. Defrag. means joining the adjacent free cells. / # define LV_MEM_AUTO_DEFRAG 1 #else /LV_MEM_CUSTOM/ # define LV_MEM_CUSTOM_INCLUDE /Header for the dynamic memory function/ # define LV_MEM_CUSTOM_ALLOC malloc /Wrapper to malloc/ # define LV_MEM_CUSTOM_FREE free /Wrapper to free/ #endif /LV_MEM_CUSTOM/ / Garbage Collector settings * Used if lvgl is binded to higher level language and the memory is managed by that language / #define LV_ENABLE_GC 0 #if LV_ENABLE_GC != 0 # define LV_GC_INCLUDE "gc.h" /Include Garbage Collector related things/ # define LV_MEM_CUSTOM_REALLOC your_realloc /Wrapper to realloc/ # define LV_MEM_CUSTOM_GET_SIZE your_mem_get_size /Wrapper to lv_mem_get_size/ #endif / LV_ENABLE_GC / /======================= Input device settings =======================/ /* Input device default settings. * Can be changed in the Input device driver (`lv_indev_drv_t`)/ / Input device read period in milliseconds / #define LV_INDEV_DEF_READ_PERIOD 30 / Drag threshold in pixels / #define LV_INDEV_DEF_DRAG_LIMIT 10 / Drag throw slow-down in [%]. Greater value -> faster slow-down / #define LV_INDEV_DEF_DRAG_THROW 20 / Long press time in milliseconds. * Time to send `LV_EVENT_LONG_PRESSSED`) / #define LV_INDEV_DEF_LONG_PRESS_TIME 400 / Repeated trigger period in long press [ms] * Time between `LV_EVENT_LONG_PRESSED_REPEAT / #define LV_INDEV_DEF_LONG_PRESS_REP_TIME 100 /================== * Feature usage ==================/ /1: Enable the Animations / #define LV_USE_ANIMATION 1 #if LV_USE_ANIMATION /Declare the type of the user data of animations (can be e.g. `void `, `int`, `struct`)/ typedef void lv_anim_user_data_t; #endif /* 1: Enable shadow drawing/ #define LV_USE_SHADOW 1 / 1: Enable object groups (for keyboard/encoder navigation) / #define LV_USE_GROUP 1 #if LV_USE_GROUP typedef void lv_group_user_data_t; #endif /LV_USE_GROUP/ /* 1: Enable GPU interface/ #define LV_USE_GPU 0 / 1: Enable file system (might be required for images / #define LV_USE_FILESYSTEM 0 #if LV_USE_FILESYSTEM /Declare the type of the user data of file system drivers (can be e.g. `void `, `int`, `struct`)/ typedef void * lv_fs_drv_user_data_t; #endif /1: Add a `user_data` to drivers and objects/ #define LV_USE_USER_DATA 0 /======================== Image decoder and cache ========================/ /* 1: Enable indexed (palette) images / #define LV_IMG_CF_INDEXED 1 / 1: Enable alpha indexed images / #define LV_IMG_CF_ALPHA 1 / Default image cache size. Image caching keeps the images opened. * If only the built-in image formats are used there is no real advantage of caching. * (I.e. no new image decoder is added) * With complex image decoders (e.g. PNG or JPG) caching can save the continuous open/decode of images. * However the opened images might consume additional RAM. * LV_IMG_CACHE_DEF_SIZE must be >= 1 / #define LV_IMG_CACHE_DEF_SIZE 1 /Declare the type of the user data of image decoder (can be e.g. `void `, `int`, `struct`)/ typedef void * lv_img_decoder_user_data_t; /===================== Compiler settings ====================/ /* Define a custom attribute to `lv_tick_inc` function / #define LV_ATTRIBUTE_TICK_INC / Define a custom attribute to `lv_task_handler` function / #define LV_ATTRIBUTE_TASK_HANDLER / With size optimization (-Os) the compiler might not align data to * 4 or 8 byte boundary. This alignment will be explicitly applied where needed. * E.g. __attribute__((aligned(4))) / #define LV_ATTRIBUTE_MEM_ALIGN / Attribute to mark large constant arrays for example * font's bitmaps / #define LV_ATTRIBUTE_LARGE_CONST /=================== * HAL settings ==================/ /* 1: use a custom tick source. * It removes the need to manually update the tick with `lv_tick_inc`) / #define LV_TICK_CUSTOM 0 #if LV_TICK_CUSTOM == 1 #define LV_TICK_CUSTOM_INCLUDE "something.h" /Header for the sys time function/ #define LV_TICK_CUSTOM_SYS_TIME_EXPR (millis()) /Expression evaluating to current systime in ms/ #endif /LV_TICK_CUSTOM/ typedef void lv_disp_drv_user_data_t; /Type of user data in the display driver/ typedef void * lv_indev_drv_user_data_t; /Type of user data in the input device driver/ /================ Log settings ===============/ /1: Enable the log module/ #define LV_USE_LOG 0 #if LV_USE_LOG /* How important log should be added: * LV_LOG_LEVEL_TRACE A lot of logs to give detailed information * LV_LOG_LEVEL_INFO Log important events * LV_LOG_LEVEL_WARN Log if something unwanted happened but didn't cause a problem * LV_LOG_LEVEL_ERROR Only critical issue, when the system may fail * LV_LOG_LEVEL_NONE Do not log anything / # define LV_LOG_LEVEL LV_LOG_LEVEL_WARN / 1: Print the log with 'printf'; * 0: user need to register a callback with `lv_log_register_print`/ # define LV_LOG_PRINTF 0 #endif /LV_USE_LOG/ /================ * THEME USAGE ================/ #define LV_THEME_LIVE_UPDATE 1 /1: Allow theme switching at run time. Uses 8..10 kB of RAM/ #define LV_USE_THEME_TEMPL 1 /Just for test/ #define LV_USE_THEME_DEFAULT 1 /Built mainly from the built-in styles. Consumes very few RAM/ #define LV_USE_THEME_ALIEN 1 /Dark futuristic theme/ #define LV_USE_THEME_NIGHT 1 /Dark elegant theme/ #define LV_USE_THEME_MONO 1 /Mono color theme for monochrome displays/ #define LV_USE_THEME_MATERIAL 1 /Flat theme with bold colors and light shadows/ #define LV_USE_THEME_ZEN 1 /Peaceful, mainly light theme / #define LV_USE_THEME_NEMO 1 /Water-like theme based on the movie "Finding Nemo"/ /================== FONT USAGE ===================/ /* The built-in fonts contains the ASCII range and some Symbols with 4 bit-per-pixel. * The symbols are available via `LV_SYMBOL_...` defines * More info about fonts: https://docs.littlevgl.com/#Fonts * To create a new font go to: https://littlevgl.com/ttf-font-to-c-array / / Robot fonts with bpp = 4 * https://fonts.google.com/specimen/Roboto / #define LV_FONT_ROBOTO_12 0 #define LV_FONT_ROBOTO_16 1 #define LV_FONT_ROBOTO_22 0 #define LV_FONT_ROBOTO_28 0 /Pixel perfect monospace font * http://pelulamu.net/unscii/ / #define LV_FONT_UNSCII_8 0 / Optionally declare your custom fonts here. * You can use these fonts as default font too * and they will be available globally. E.g. * #define LV_FONT_CUSTOM_DECLARE LV_FONT_DECLARE(my_font_1) * LV_FONT_DECLARE(my_font_2) / #define LV_FONT_CUSTOM_DECLARE /Always set a default font from the built-in fonts/ #define LV_FONT_DEFAULT &lv_font_roboto_16 / Enable it if you have fonts with a lot of characters. * The limit depends on the font size, font face and bpp * but with > 10,000 characters if you see issues probably you need to enable it./ #define LV_FONT_FMT_TXT_LARGE 0 /Declare the type of the user data of fonts (can be e.g. `void `, `int`, `struct`)/ typedef void * lv_font_user_data_t; /================= Text settings =================/ /* Select a character encoding for strings. * Your IDE or editor should have the same character encoding * - LV_TXT_ENC_UTF8 * - LV_TXT_ENC_ASCII * / #define LV_TXT_ENC LV_TXT_ENC_UTF8 /Can break (wrap) texts on these chars/ #define LV_TXT_BREAK_CHARS " ,.;:-_" /=================== * LV_OBJ SETTINGS ==================/ /Declare the type of the user data of object (can be e.g. `void `, `int`, `struct`)/ typedef void lv_obj_user_data_t; /1: enable `lv_obj_realaign()` based on `lv_obj_align()` parameters/ #define LV_USE_OBJ_REALIGN 1 /* Enable to make the object clickable on a larger area. * LV_EXT_CLICK_AREA_OFF or 0: Disable this feature * LV_EXT_CLICK_AREA_TINY: The extra area can be adjusted horizontally and vertically (0..255 px) * LV_EXT_CLICK_AREA_FULL: The extra area can be adjusted in all 4 directions (-32k..+32k px) / #define LV_USE_EXT_CLICK_AREA LV_EXT_CLICK_AREA_OFF /================== * LV OBJ X USAGE ================/ /* * Documentation of the object types: https://docs.littlevgl.com/#Object-types / /Arc (dependencies: -)/ #define LV_USE_ARC 1 /Bar (dependencies: -)/ #define LV_USE_BAR 1 /Button (dependencies: lv_cont/ #define LV_USE_BTN 1 #if LV_USE_BTN != 0 /Enable button-state animations - draw a circle on click (dependencies: LV_USE_ANIMATION)/ # define LV_BTN_INK_EFFECT 0 #endif /Button matrix (dependencies: -)/ #define LV_USE_BTNM 1 /Calendar (dependencies: -)/ #define LV_USE_CALENDAR 1 /Canvas (dependencies: lv_img)/ #define LV_USE_CANVAS 1 /Check box (dependencies: lv_btn, lv_label)/ #define LV_USE_CB 1 /Chart (dependencies: -)/ #define LV_USE_CHART 1 #if LV_USE_CHART # define LV_CHART_AXIS_TICK_LABEL_MAX_LEN 20 #endif /Container (dependencies: -/ #define LV_USE_CONT 1 /Drop down list (dependencies: lv_page, lv_label, lv_symbol_def.h)/ #define LV_USE_DDLIST 1 #if LV_USE_DDLIST != 0 /Open and close default animation time [ms] (0: no animation)/ # define LV_DDLIST_DEF_ANIM_TIME 200 #endif /Gauge (dependencies:lv_bar, lv_lmeter)/ #define LV_USE_GAUGE 1 /Image (dependencies: lv_label/ #define LV_USE_IMG 1 /Image Button (dependencies: lv_btn/ #define LV_USE_IMGBTN 1 #if LV_USE_IMGBTN /1: The imgbtn requires left, mid and right parts and the width can be set freely/ # define LV_IMGBTN_TILED 0 #endif /Keyboard (dependencies: lv_btnm)/ #define LV_USE_KB 1 /Label (dependencies: -/ #define LV_USE_LABEL 1 #if LV_USE_LABEL != 0 /Hor, or ver. scroll speed [px/sec] in 'LV_LABEL_LONG_ROLL/ROLL_CIRC' mode/ # define LV_LABEL_DEF_SCROLL_SPEED 25 / Waiting period at beginning/end of animation cycle / # define LV_LABEL_WAIT_CHAR_COUNT 3 /Enable selecting text of the label / # define LV_LABEL_TEXT_SEL 0 /Store extra some info in labels (12 bytes) to speed up drawing of very long texts/ # define LV_LABEL_LONG_TXT_HINT 0 #endif /LED (dependencies: -)/ #define LV_USE_LED 1 /Line (dependencies: -/ #define LV_USE_LINE 1 /List (dependencies: lv_page, lv_btn, lv_label, (lv_img optionally for icons ))/ #define LV_USE_LIST 1 #if LV_USE_LIST != 0 /Default animation time of focusing to a list element [ms] (0: no animation) / # define LV_LIST_DEF_ANIM_TIME 100 #endif /Line meter (dependencies: ;)/ #define LV_USE_LMETER 1 /Message box (dependencies: lv_rect, lv_btnm, lv_label)/ #define LV_USE_MBOX 1 /Page (dependencies: lv_cont)/ #define LV_USE_PAGE 1 #if LV_USE_PAGE != 0 /Focus default animation time [ms] (0: no animation)/ # define LV_PAGE_DEF_ANIM_TIME 400 #endif /Preload (dependencies: lv_arc, lv_anim)/ #define LV_USE_PRELOAD 1 #if LV_USE_PRELOAD != 0 # define LV_PRELOAD_DEF_ARC_LENGTH 60 /[deg]/ # define LV_PRELOAD_DEF_SPIN_TIME 1000 /[ms]/ # define LV_PRELOAD_DEF_ANIM LV_PRELOAD_TYPE_SPINNING_ARC #endif /Roller (dependencies: lv_ddlist)/ #define LV_USE_ROLLER 1 #if LV_USE_ROLLER != 0 /Focus animation time [ms] (0: no animation)/ # define LV_ROLLER_DEF_ANIM_TIME 200 /Number of extra "pages" when the roller is infinite/ # define LV_ROLLER_INF_PAGES 7 #endif /Slider (dependencies: lv_bar)/ #define LV_USE_SLIDER 1 /Spinbox (dependencies: lv_ta)/ #define LV_USE_SPINBOX 1 /Switch (dependencies: lv_slider)/ #define LV_USE_SW 1 /Text area (dependencies: lv_label, lv_page)/ #define LV_USE_TA 1 #if LV_USE_TA != 0 # define LV_TA_DEF_CURSOR_BLINK_TIME 400 /ms/ # define LV_TA_DEF_PWD_SHOW_TIME 1500 /ms/ #endif /Table (dependencies: lv_label)/ #define LV_USE_TABLE 1 #if LV_USE_TABLE # define LV_TABLE_COL_MAX 12 #endif /Tab (dependencies: lv_page, lv_btnm)/ #define LV_USE_TABVIEW 1 # if LV_USE_TABVIEW != 0 /Time of slide animation [ms] (0: no animation)/ # define LV_TABVIEW_DEF_ANIM_TIME 300 #endif /Tileview (dependencies: lv_page) / #define LV_USE_TILEVIEW 1 #if LV_USE_TILEVIEW /Time of slide animation [ms] (0: no animation)/ # define LV_TILEVIEW_DEF_ANIM_TIME 300 #endif /Window (dependencies: lv_cont, lv_btn, lv_label, lv_img, lv_page)/ #define LV_USE_WIN 1 /================== Non-user section ==================/ #if defined(_MSC_VER) && !defined(_CRT_SECURE_NO_WARNINGS) /* Disable warnings for Visual Studio/ # define _CRT_SECURE_NO_WARNINGS #endif /--END OF LV_CONF_H--/ /Be sure every define has a default value/ #include "lvgl/src/lv_conf_checker.h" #endif /LV_CONF_H/ #endif /End of "Content enable"/ 复制代码* 主要分辨率要选成自己的屏幕对于的，并关闭系统支持~ 下面我们对底层进行移植：主要是LCD驱动及TOUCH驱动，我们把LVGL里面porting文件夹里面的temp进行修改：其中： lv_port_dis.c /** * @file lv_port_disp.c * / /Copy this file as "lv_port_disp.c" and set this value to "1" to enable content/ #if 1 /******************** * INCLUDES *******************/ #include "lv_port_disp.h" #include "lcd.h" /******************* * DEFINES *******************/ /******************** * TYPEDEFS ********************/ /******************** * STATIC PROTOTYPES *********************/ static void disp_init(void); static void disp_flush(lv_disp_drv_t disp_drv, const lv_area_t * area, lv_color_t * color_p); #if LV_USE_GPU static void gpu_blend(lv_color_t * dest, const lv_color_t * src, uint32_t length, lv_opa_t opa); static void gpu_fill(lv_color_t * dest, uint32_t length, lv_color_t color); #endif /********************** * STATIC VARIABLES ********************/ /******************** * MACROS ********************/ /******************** * GLOBAL FUNCTIONS *********************/ void lv_port_disp_init(void) { /------------------------- * Initialize your display * -----------------------/ disp_init(); /----------------------------- * Create a buffer for drawing ----------------------------/ /* Example for 1) / static lv_disp_buf_t disp_buf_1; static lv_color_t buf1_1[LV_HOR_RES_MAX 10]; /A buffer for 10 rows/ lv_disp_buf_init(&disp_buf_1, buf1_1, NULL, LV_HOR_RES_MAX * 10); /Initialize the display buffer/ /----------------------------------- Register the display in LittlevGL ----------------------------------/ lv_disp_drv_t disp_drv; /Descriptor of a display driver/ lv_disp_drv_init(&disp_drv); /Basic initialization/ /Set up the functions to access to your display/ /Set the resolution of the display/ //适配多个屏幕 disp_drv.hor_res = lcddev.width; disp_drv.ver_res = lcddev.height; /Used to copy the buffer's content to the display/ disp_drv.flush_cb = disp_flush; /Set a display buffer/ disp_drv.buffer = &disp_buf_1; #if LV_USE_GPU /Optionally add functions to access the GPU. (Only in buffered mode, LV_VDB_SIZE != 0)/ /Blend two color array using opacity/ disp_drv.gpu_blend = gpu_blend; /Fill a memory array with a color/ disp_drv.gpu_fill = gpu_fill; #endif /Finally register the driver/ lv_disp_drv_register(&disp_drv); } /********************** * STATIC FUNCTIONS *********************/ / Initialize your display and the required peripherals. / static void disp_init(void) { /You code here/ } / Flush the content of the internal buffer the specific area on the display * You can use DMA or any hardware acceleration to do this operation in the background but * 'lv_disp_flush_ready()' has to be called when finished. / static void disp_flush(lv_disp_drv_t disp_drv, const lv_area_t * area, lv_color_t * color_p) { LCD_Color_Fill(area->x1,area->y1,area->x2,area->y2,(u16)color_p); / IMPORTANT!!! * Inform the graphics library that you are ready with the flushing/ lv_disp_flush_ready(disp_drv); } /OPTIONAL: GPU INTERFACE/ #if LV_USE_GPU / If your MCU has hardware accelerator (GPU) then you can use it to blend to memories using opacity * It can be used only in buffered mode (LV_VDB_SIZE != 0 in lv_conf.h)/ static void gpu_blend(lv_disp_drv_t disp_drv, lv_color_t * dest, const lv_color_t * src, uint32_t length, lv_opa_t opa) { /It's an example code which should be done by your GPU/ uint32_t i; for(i = 0; i < length; i++) { dest[i] = lv_color_mix(dest[i], src[i], opa); } } /* If your MCU has hardware accelerator (GPU) then you can use it to fill a memory with a color * It can be used only in buffered mode (LV_VDB_SIZE != 0 in lv_conf.h)/ static void gpu_fill_cb(lv_disp_drv_t disp_drv, lv_color_t * dest_buf, lv_coord_t dest_width, const lv_area_t * fill_area, lv_color_t color); { /It's an example code which should be done by your GPU/ uint32_t x, y; dest_buf += dest_width * fill_area->y1; /Go to the first line/ for(y = fill_area->y1; y < fill_area->y2; y++) { for(x = fill_area->x1; x < fill_area->x2; x++) { dest_buf[x] = color; } dest_buf+=dest_width; /Go to the next line/ } } #endif /LV_USE_GPU/ #else /* Enable this file at the top / / This dummy typedef exists purely to silence -Wpedantic. / typedef int keep_pedantic_happy; #endif 复制代码* lv_port_indev.c /** * @file lv_port_indev.c * / /Copy this file as "lv_port_indev.c" and set this value to "1" to enable content/ #if 1 /******************** * INCLUDES *******************/ #include "lv_port_indev.h" #include "touch.h" /******************* * DEFINES *******************/ /******************** * TYPEDEFS ********************/ /******************** * STATIC PROTOTYPES *********************/ static bool touchpad_read(lv_indev_drv_t indev_drv, lv_indev_data_t * data); /********************** * STATIC VARIABLES ********************/ /******************** * MACROS ********************/ /******************** * GLOBAL FUNCTIONS *********************/ void lv_port_indev_init(void) { lv_indev_drv_t indev_drv; /------------------ * Touchpad * -----------------/ /Register a touchpad input device/ lv_indev_drv_init(&indev_drv); indev_drv.type = LV_INDEV_TYPE_POINTER; indev_drv.read_cb = touchpad_read; lv_indev_drv_register(&indev_drv); } /********************* * STATIC FUNCTIONS *********************/ / Will be called by the library to read the touchpad / static bool touchpad_read(lv_indev_drv_t indev_drv, lv_indev_data_t * data) { static uint16_t last_x = 0; static uint16_t last_y = 0; if(tp_dev.sta&TP_PRES_DOWN)//触摸按下了 { last_x = tp_dev.x[0]; last_y = tp_dev.y[0]; data->point.x = last_x; data->point.y = last_y; data->state = LV_INDEV_STATE_PR; }else{ data->point.x = last_x; data->point.y = last_y; data->state = LV_INDEV_STATE_REL; } /Return `false` because we are not buffering and no more data to read/ return false; } #else /* Enable this file at the top / / This dummy typedef exists purely to silence -Wpedantic. / typedef int keep_pedantic_happy; #endif 复制代码* 在新建一个GUI_APP文件夹，把里面我们要展示的例子，添加进去~ 在main函数里面调用： TIM1_Int_Init(999,119);//定时器初始化(1ms 中断),用于给 lvgl 提供 1ms 的心跳节拍 LCD_Init(); tp_dev.init();//触摸初始化 lv_init(); //lvgl系统初始化 lv_port_disp_init(); //lvgl显示接口初始化,放在lv_init()的后面 lv_port_indev_init(); //lvgl输入接口初始化,放在lv_init()的后面 //通过TEST_NUM的值来选择运行不同的例程 #if(TEST_NUM==1) demo_create(); #elif(TEST_NUM==2) lv_test_theme_1(lv_theme_night_init(210, NULL)); #else lv_test_theme_2(); #endif while(1) { tp_dev.scan(0); lv_task_handler(); } 复制代码编译，查看效果。如前图。好了LVGL的移植就到这了。谢谢大家观看~ 1
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