Fix up display artficacts and clean up unused features

custom
jacqueline 2 years ago
parent 47ae601d41
commit fed7b450b3
  1. 759
      lib/lv_conf.h
  2. 187
      src/drivers/display.cpp
  3. 37
      src/drivers/include/display.hpp
  4. 20
      src/main/main.cpp

@ -1,759 +0,0 @@
/**
* @file lv_conf.h
* Configuration file for v8.3.3
*/
/*
* Copy this file as `lv_conf.h`
* 1. simply next to the `lvgl` folder
* 2. or any other places and
* - define `LV_CONF_INCLUDE_SIMPLE`
* - add the path as include path
*/
/* clang-format off */
#if 1 /*Set it to "1" to enable content*/
#ifndef LV_CONF_H
#define LV_CONF_H
#include <stdint.h>
/*====================
COLOR SETTINGS
*====================*/
/*Color depth: 1 (1 byte per pixel), 8 (RGB332), 16 (RGB565), 32 (ARGB8888)*/
#define LV_COLOR_DEPTH 16
/*Swap the 2 bytes of RGB565 color. Useful if the display has an 8-bit interface (e.g. SPI)*/
#define LV_COLOR_16_SWAP 1
/*Enable features to draw on transparent background.
*It's required if opa, and transform_* style properties are used.
*Can be also used if the UI is above another layer, e.g. an OSD menu or video player.*/
#define LV_COLOR_SCREEN_TRANSP 0
/* Adjust color mix functions rounding. GPUs might calculate color mix (blending) differently.
* 0: round down, 64: round up from x.75, 128: round up from half, 192: round up from x.25, 254: round up */
#define LV_COLOR_MIX_ROUND_OFS 0
/*Images pixels with this color will not be drawn if they are chroma keyed)*/
#define LV_COLOR_CHROMA_KEY lv_color_hex(0x00ff00) /*pure green*/
/*=========================
MEMORY SETTINGS
*=========================*/
/*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 available for `lv_mem_alloc()` in bytes (>= 2kB)*/
#define LV_MEM_SIZE (48U * 1024U) /*[bytes]*/
/*Set an address for the memory pool instead of allocating it as a normal array. Can be in external SRAM too.*/
#define LV_MEM_ADR 0 /*0: unused*/
/*Instead of an address give a memory allocator that will be called to get a memory pool for LVGL. E.g. my_malloc*/
#if LV_MEM_ADR == 0
#undef LV_MEM_POOL_INCLUDE
#undef LV_MEM_POOL_ALLOC
#endif
#else /*LV_MEM_CUSTOM*/
#define LV_MEM_CUSTOM_INCLUDE <stdlib.h> /*Header for the dynamic memory function*/
#define LV_MEM_CUSTOM_ALLOC malloc
#define LV_MEM_CUSTOM_FREE free
#define LV_MEM_CUSTOM_REALLOC realloc
#endif /*LV_MEM_CUSTOM*/
/*Number of the intermediate memory buffer used during rendering and other internal processing mechanisms.
*You will see an error log message if there wasn't enough buffers. */
#define LV_MEM_BUF_MAX_NUM 16
/*Use the standard `memcpy` and `memset` instead of LVGL's own functions. (Might or might not be faster).*/
#define LV_MEMCPY_MEMSET_STD 0
/*====================
HAL SETTINGS
*====================*/
/*Default display refresh period. LVG will redraw changed areas with this period time*/
#define LV_DISP_DEF_REFR_PERIOD 30 /*[ms]*/
/*Input device read period in milliseconds*/
#define LV_INDEV_DEF_READ_PERIOD 30 /*[ms]*/
/*Use a custom tick source that tells the elapsed time in milliseconds.
*It removes the need to manually update the tick with `lv_tick_inc()`)*/
#define LV_TICK_CUSTOM 0
#if LV_TICK_CUSTOM
#define LV_TICK_CUSTOM_INCLUDE "Arduino.h" /*Header for the system time function*/
#define LV_TICK_CUSTOM_SYS_TIME_EXPR (millis()) /*Expression evaluating to current system time in ms*/
#endif /*LV_TICK_CUSTOM*/
/*Default Dot Per Inch. Used to initialize default sizes such as widgets sized, style paddings.
*(Not so important, you can adjust it to modify default sizes and spaces)*/
#define LV_DPI_DEF 130 /*[px/inch]*/
/*=======================
* FEATURE CONFIGURATION
*=======================*/
/*-------------
* Drawing
*-----------*/
/*Enable complex draw engine.
*Required to draw shadow, gradient, rounded corners, circles, arc, skew lines, image transformations or any masks*/
#define LV_DRAW_COMPLEX 1
#if LV_DRAW_COMPLEX != 0
/*Allow buffering some shadow calculation.
*LV_SHADOW_CACHE_SIZE is the max. shadow size to buffer, where shadow size is `shadow_width + radius`
*Caching has LV_SHADOW_CACHE_SIZE^2 RAM cost*/
#define LV_SHADOW_CACHE_SIZE 0
/* Set number of maximally cached circle data.
* The circumference of 1/4 circle are saved for anti-aliasing
* radius * 4 bytes are used per circle (the most often used radiuses are saved)
* 0: to disable caching */
#define LV_CIRCLE_CACHE_SIZE 4
#endif /*LV_DRAW_COMPLEX*/
/**
* "Simple layers" are used when a widget has `style_opa < 255` to buffer the widget into a layer
* and blend it as an image with the given opacity.
* Note that `bg_opa`, `text_opa` etc don't require buffering into layer)
* The widget can be buffered in smaller chunks to avoid using large buffers.
*
* - LV_LAYER_SIMPLE_BUF_SIZE: [bytes] the optimal target buffer size. LVGL will try to allocate it
* - LV_LAYER_SIMPLE_FALLBACK_BUF_SIZE: [bytes] used if `LV_LAYER_SIMPLE_BUF_SIZE` couldn't be allocated.
*
* Both buffer sizes are in bytes.
* "Transformed layers" (where transform_angle/zoom properties are used) use larger buffers
* and can't be drawn in chunks. So these settings affects only widgets with opacity.
*/
#define LV_LAYER_SIMPLE_BUF_SIZE (24 * 1024)
#define LV_LAYER_SIMPLE_FALLBACK_BUF_SIZE (3 * 1024)
/*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. if 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.
*0: to disable caching*/
#define LV_IMG_CACHE_DEF_SIZE 0
/*Number of stops allowed per gradient. Increase this to allow more stops.
*This adds (sizeof(lv_color_t) + 1) bytes per additional stop*/
#define LV_GRADIENT_MAX_STOPS 2
/*Default gradient buffer size.
*When LVGL calculates the gradient "maps" it can save them into a cache to avoid calculating them again.
*LV_GRAD_CACHE_DEF_SIZE sets the size of this cache in bytes.
*If the cache is too small the map will be allocated only while it's required for the drawing.
*0 mean no caching.*/
#define LV_GRAD_CACHE_DEF_SIZE 0
/*Allow dithering the gradients (to achieve visual smooth color gradients on limited color depth display)
*LV_DITHER_GRADIENT implies allocating one or two more lines of the object's rendering surface
*The increase in memory consumption is (32 bits * object width) plus 24 bits * object width if using error diffusion */
#define LV_DITHER_GRADIENT 0
#if LV_DITHER_GRADIENT
/*Add support for error diffusion dithering.
*Error diffusion dithering gets a much better visual result, but implies more CPU consumption and memory when drawing.
*The increase in memory consumption is (24 bits * object's width)*/
#define LV_DITHER_ERROR_DIFFUSION 0
#endif
/*Maximum buffer size to allocate for rotation.
*Only used if software rotation is enabled in the display driver.*/
#define LV_DISP_ROT_MAX_BUF (10*1024)
/*-------------
* GPU
*-----------*/
/*Use Arm's 2D acceleration library Arm-2D */
#define LV_USE_GPU_ARM2D 0
/*Use STM32's DMA2D (aka Chrom Art) GPU*/
#define LV_USE_GPU_STM32_DMA2D 0
#if LV_USE_GPU_STM32_DMA2D
/*Must be defined to include path of CMSIS header of target processor
e.g. "stm32f769xx.h" or "stm32f429xx.h"*/
#define LV_GPU_DMA2D_CMSIS_INCLUDE
#endif
/*Use SWM341's DMA2D GPU*/
#define LV_USE_GPU_SWM341_DMA2D 0
#if LV_USE_GPU_SWM341_DMA2D
#define LV_GPU_SWM341_DMA2D_INCLUDE "SWM341.h"
#endif
/*Use NXP's PXP GPU iMX RTxxx platforms*/
#define LV_USE_GPU_NXP_PXP 0
#if LV_USE_GPU_NXP_PXP
/*1: Add default bare metal and FreeRTOS interrupt handling routines for PXP (lv_gpu_nxp_pxp_osa.c)
* and call lv_gpu_nxp_pxp_init() automatically during lv_init(). Note that symbol SDK_OS_FREE_RTOS
* has to be defined in order to use FreeRTOS OSA, otherwise bare-metal implementation is selected.
*0: lv_gpu_nxp_pxp_init() has to be called manually before lv_init()
*/
#define LV_USE_GPU_NXP_PXP_AUTO_INIT 0
#endif
/*Use NXP's VG-Lite GPU iMX RTxxx platforms*/
#define LV_USE_GPU_NXP_VG_LITE 0
/*Use SDL renderer API*/
#define LV_USE_GPU_SDL 0
#if LV_USE_GPU_SDL
#define LV_GPU_SDL_INCLUDE_PATH <SDL2/SDL.h>
/*Texture cache size, 8MB by default*/
#define LV_GPU_SDL_LRU_SIZE (1024 * 1024 * 8)
/*Custom blend mode for mask drawing, disable if you need to link with older SDL2 lib*/
#define LV_GPU_SDL_CUSTOM_BLEND_MODE (SDL_VERSION_ATLEAST(2, 0, 6))
#endif
/*-------------
* Logging
*-----------*/
/*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_USER Only logs added by the user
*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_cb()`*/
#define LV_LOG_PRINTF 0
/*Enable/disable LV_LOG_TRACE in modules that produces a huge number of logs*/
#define LV_LOG_TRACE_MEM 1
#define LV_LOG_TRACE_TIMER 1
#define LV_LOG_TRACE_INDEV 1
#define LV_LOG_TRACE_DISP_REFR 1
#define LV_LOG_TRACE_EVENT 1
#define LV_LOG_TRACE_OBJ_CREATE 1
#define LV_LOG_TRACE_LAYOUT 1
#define LV_LOG_TRACE_ANIM 1
#endif /*LV_USE_LOG*/
/*-------------
* Asserts
*-----------*/
/*Enable asserts if an operation is failed or an invalid data is found.
*If LV_USE_LOG is enabled an error message will be printed on failure*/
#define LV_USE_ASSERT_NULL 1 /*Check if the parameter is NULL. (Very fast, recommended)*/
#define LV_USE_ASSERT_MALLOC 1 /*Checks is the memory is successfully allocated or no. (Very fast, recommended)*/
#define LV_USE_ASSERT_STYLE 0 /*Check if the styles are properly initialized. (Very fast, recommended)*/
#define LV_USE_ASSERT_MEM_INTEGRITY 0 /*Check the integrity of `lv_mem` after critical operations. (Slow)*/
#define LV_USE_ASSERT_OBJ 0 /*Check the object's type and existence (e.g. not deleted). (Slow)*/
/*Add a custom handler when assert happens e.g. to restart the MCU*/
#define LV_ASSERT_HANDLER_INCLUDE <stdint.h>
#define LV_ASSERT_HANDLER while(1); /*Halt by default*/
/*-------------
* Others
*-----------*/
/*1: Show CPU usage and FPS count*/
#define LV_USE_PERF_MONITOR 1
#if LV_USE_PERF_MONITOR
#define LV_USE_PERF_MONITOR_POS LV_ALIGN_BOTTOM_RIGHT
#endif
/*1: Show the used memory and the memory fragmentation
* Requires LV_MEM_CUSTOM = 0*/
#define LV_USE_MEM_MONITOR 1
#if LV_USE_MEM_MONITOR
#define LV_USE_MEM_MONITOR_POS LV_ALIGN_BOTTOM_LEFT
#endif
/*1: Draw random colored rectangles over the redrawn areas*/
#define LV_USE_REFR_DEBUG 0
/*Change the built in (v)snprintf functions*/
#define LV_SPRINTF_CUSTOM 0
#if LV_SPRINTF_CUSTOM
#define LV_SPRINTF_INCLUDE <stdio.h>
#define lv_snprintf snprintf
#define lv_vsnprintf vsnprintf
#else /*LV_SPRINTF_CUSTOM*/
#define LV_SPRINTF_USE_FLOAT 0
#endif /*LV_SPRINTF_CUSTOM*/
#define LV_USE_USER_DATA 1
/*Garbage Collector settings
*Used if lvgl is bound 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*/
#endif /*LV_ENABLE_GC*/
/*=====================
* COMPILER SETTINGS
*====================*/
/*For big endian systems set to 1*/
#define LV_BIG_ENDIAN_SYSTEM 0
/*Define a custom attribute to `lv_tick_inc` function*/
#define LV_ATTRIBUTE_TICK_INC
/*Define a custom attribute to `lv_timer_handler` function*/
#define LV_ATTRIBUTE_TIMER_HANDLER
/*Define a custom attribute to `lv_disp_flush_ready` function*/
#define LV_ATTRIBUTE_FLUSH_READY
/*Required alignment size for buffers*/
#define LV_ATTRIBUTE_MEM_ALIGN_SIZE 1
/*Will be added where memories needs to be aligned (with -Os data might not be aligned to boundary by default).
* 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
/*Compiler prefix for a big array declaration in RAM*/
#define LV_ATTRIBUTE_LARGE_RAM_ARRAY
/*Place performance critical functions into a faster memory (e.g RAM)*/
#define LV_ATTRIBUTE_FAST_MEM
/*Prefix variables that are used in GPU accelerated operations, often these need to be placed in RAM sections that are DMA accessible*/
#define LV_ATTRIBUTE_DMA
/*Export integer constant to binding. This macro is used with constants in the form of LV_<CONST> that
*should also appear on LVGL binding API such as Micropython.*/
#define LV_EXPORT_CONST_INT(int_value) struct _silence_gcc_warning /*The default value just prevents GCC warning*/
/*Extend the default -32k..32k coordinate range to -4M..4M by using int32_t for coordinates instead of int16_t*/
#define LV_USE_LARGE_COORD 0
/*==================
* FONT USAGE
*===================*/
/*Montserrat fonts with ASCII range and some symbols using bpp = 4
*https://fonts.google.com/specimen/Montserrat*/
#define LV_FONT_MONTSERRAT_8 0
#define LV_FONT_MONTSERRAT_10 0
#define LV_FONT_MONTSERRAT_12 0
#define LV_FONT_MONTSERRAT_14 1
#define LV_FONT_MONTSERRAT_16 0
#define LV_FONT_MONTSERRAT_18 0
#define LV_FONT_MONTSERRAT_20 0
#define LV_FONT_MONTSERRAT_22 0
#define LV_FONT_MONTSERRAT_24 0
#define LV_FONT_MONTSERRAT_26 0
#define LV_FONT_MONTSERRAT_28 0
#define LV_FONT_MONTSERRAT_30 0
#define LV_FONT_MONTSERRAT_32 0
#define LV_FONT_MONTSERRAT_34 0
#define LV_FONT_MONTSERRAT_36 0
#define LV_FONT_MONTSERRAT_38 0
#define LV_FONT_MONTSERRAT_40 0
#define LV_FONT_MONTSERRAT_42 0
#define LV_FONT_MONTSERRAT_44 0
#define LV_FONT_MONTSERRAT_46 0
#define LV_FONT_MONTSERRAT_48 0
/*Demonstrate special features*/
#define LV_FONT_MONTSERRAT_12_SUBPX 0
#define LV_FONT_MONTSERRAT_28_COMPRESSED 0 /*bpp = 3*/
#define LV_FONT_DEJAVU_16_PERSIAN_HEBREW 0 /*Hebrew, Arabic, Persian letters and all their forms*/
#define LV_FONT_SIMSUN_16_CJK 0 /*1000 most common CJK radicals*/
/*Pixel perfect monospace fonts*/
#define LV_FONT_UNSCII_8 0
#define LV_FONT_UNSCII_16 0
/*Optionally declare 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*/
#define LV_FONT_DEFAULT &lv_font_montserrat_14
/*Enable handling large font and/or fonts with a lot of characters.
*The limit depends on the font size, font face and bpp.
*Compiler error will be triggered if a font needs it.*/
#define LV_FONT_FMT_TXT_LARGE 0
/*Enables/disables support for compressed fonts.*/
#define LV_USE_FONT_COMPRESSED 0
/*Enable subpixel rendering*/
#define LV_USE_FONT_SUBPX 0
#if LV_USE_FONT_SUBPX
/*Set the pixel order of the display. Physical order of RGB channels. Doesn't matter with "normal" fonts.*/
#define LV_FONT_SUBPX_BGR 0 /*0: RGB; 1:BGR order*/
#endif
/*Enable drawing placeholders when glyph dsc is not found*/
#define LV_USE_FONT_PLACEHOLDER 1
/*=================
* 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 " ,.;:-_"
/*If a word is at least this long, will break wherever "prettiest"
*To disable, set to a value <= 0*/
#define LV_TXT_LINE_BREAK_LONG_LEN 0
/*Minimum number of characters in a long word to put on a line before a break.
*Depends on LV_TXT_LINE_BREAK_LONG_LEN.*/
#define LV_TXT_LINE_BREAK_LONG_PRE_MIN_LEN 3
/*Minimum number of characters in a long word to put on a line after a break.
*Depends on LV_TXT_LINE_BREAK_LONG_LEN.*/
#define LV_TXT_LINE_BREAK_LONG_POST_MIN_LEN 3
/*The control character to use for signalling text recoloring.*/
#define LV_TXT_COLOR_CMD "#"
/*Support bidirectional texts. Allows mixing Left-to-Right and Right-to-Left texts.
*The direction will be processed according to the Unicode Bidirectional Algorithm:
*https://www.w3.org/International/articles/inline-bidi-markup/uba-basics*/
#define LV_USE_BIDI 0
#if LV_USE_BIDI
/*Set the default direction. Supported values:
*`LV_BASE_DIR_LTR` Left-to-Right
*`LV_BASE_DIR_RTL` Right-to-Left
*`LV_BASE_DIR_AUTO` detect texts base direction*/
#define LV_BIDI_BASE_DIR_DEF LV_BASE_DIR_AUTO
#endif
/*Enable Arabic/Persian processing
*In these languages characters should be replaced with an other form based on their position in the text*/
#define LV_USE_ARABIC_PERSIAN_CHARS 0
/*==================
* WIDGET USAGE
*================*/
/*Documentation of the widgets: https://docs.lvgl.io/latest/en/html/widgets/index.html*/
#define LV_USE_ARC 1
#define LV_USE_BAR 1
#define LV_USE_BTN 1
#define LV_USE_BTNMATRIX 1
#define LV_USE_CANVAS 1
#define LV_USE_CHECKBOX 1
#define LV_USE_DROPDOWN 1 /*Requires: lv_label*/
#define LV_USE_IMG 1 /*Requires: lv_label*/
#define LV_USE_LABEL 1
#if LV_USE_LABEL
#define LV_LABEL_TEXT_SELECTION 1 /*Enable selecting text of the label*/
#define LV_LABEL_LONG_TXT_HINT 1 /*Store some extra info in labels to speed up drawing of very long texts*/
#endif
#define LV_USE_LINE 1
#define LV_USE_ROLLER 1 /*Requires: lv_label*/
#if LV_USE_ROLLER
#define LV_ROLLER_INF_PAGES 7 /*Number of extra "pages" when the roller is infinite*/
#endif
#define LV_USE_SLIDER 1 /*Requires: lv_bar*/
#define LV_USE_SWITCH 1
#define LV_USE_TEXTAREA 1 /*Requires: lv_label*/
#if LV_USE_TEXTAREA != 0
#define LV_TEXTAREA_DEF_PWD_SHOW_TIME 1500 /*ms*/
#endif
#define LV_USE_TABLE 1
/*==================
* EXTRA COMPONENTS
*==================*/
/*-----------
* Widgets
*----------*/
#define LV_USE_ANIMIMG 1
#define LV_USE_CALENDAR 1
#if LV_USE_CALENDAR
#define LV_CALENDAR_WEEK_STARTS_MONDAY 0
#if LV_CALENDAR_WEEK_STARTS_MONDAY
#define LV_CALENDAR_DEFAULT_DAY_NAMES {"Mo", "Tu", "We", "Th", "Fr", "Sa", "Su"}
#else
#define LV_CALENDAR_DEFAULT_DAY_NAMES {"Su", "Mo", "Tu", "We", "Th", "Fr", "Sa"}
#endif
#define LV_CALENDAR_DEFAULT_MONTH_NAMES {"January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December"}
#define LV_USE_CALENDAR_HEADER_ARROW 1
#define LV_USE_CALENDAR_HEADER_DROPDOWN 1
#endif /*LV_USE_CALENDAR*/
#define LV_USE_CHART 1
#define LV_USE_COLORWHEEL 1
#define LV_USE_IMGBTN 1
#define LV_USE_KEYBOARD 1
#define LV_USE_LED 1
#define LV_USE_LIST 1
#define LV_USE_MENU 1
#define LV_USE_METER 1
#define LV_USE_MSGBOX 1
#define LV_USE_SPAN 1
#if LV_USE_SPAN
/*A line text can contain maximum num of span descriptor */
#define LV_SPAN_SNIPPET_STACK_SIZE 64
#endif
#define LV_USE_SPINBOX 1
#define LV_USE_SPINNER 1
#define LV_USE_TABVIEW 1
#define LV_USE_TILEVIEW 1
#define LV_USE_WIN 1
/*-----------
* Themes
*----------*/
/*A simple, impressive and very complete theme*/
#define LV_USE_THEME_DEFAULT 0
#if LV_USE_THEME_DEFAULT
/*0: Light mode; 1: Dark mode*/
#define LV_THEME_DEFAULT_DARK 0
/*1: Enable grow on press*/
#define LV_THEME_DEFAULT_GROW 1
/*Default transition time in [ms]*/
#define LV_THEME_DEFAULT_TRANSITION_TIME 80
#endif /*LV_USE_THEME_DEFAULT*/
/*A very simple theme that is a good starting point for a custom theme*/
#define LV_USE_THEME_BASIC 1
/*A theme designed for monochrome displays*/
#define LV_USE_THEME_MONO 0
/*-----------
* Layouts
*----------*/
/*A layout similar to Flexbox in CSS.*/
#define LV_USE_FLEX 1
/*A layout similar to Grid in CSS.*/
#define LV_USE_GRID 1
/*---------------------
* 3rd party libraries
*--------------------*/
/*File system interfaces for common APIs */
/*API for fopen, fread, etc*/
#define LV_USE_FS_STDIO 1
#if LV_USE_FS_STDIO
#define LV_FS_STDIO_LETTER '\0' /*Set an upper cased letter on which the drive will accessible (e.g. 'A')*/
#define LV_FS_STDIO_PATH "" /*Set the working directory. File/directory paths will be appended to it.*/
#define LV_FS_STDIO_CACHE_SIZE 0 /*>0 to cache this number of bytes in lv_fs_read()*/
#endif
/*API for open, read, etc*/
#define LV_USE_FS_POSIX 0
#if LV_USE_FS_POSIX
#define LV_FS_POSIX_LETTER '\0' /*Set an upper cased letter on which the drive will accessible (e.g. 'A')*/
#define LV_FS_POSIX_PATH "" /*Set the working directory. File/directory paths will be appended to it.*/
#define LV_FS_POSIX_CACHE_SIZE 0 /*>0 to cache this number of bytes in lv_fs_read()*/
#endif
/*API for CreateFile, ReadFile, etc*/
#define LV_USE_FS_WIN32 0
#if LV_USE_FS_WIN32
#define LV_FS_WIN32_LETTER '\0' /*Set an upper cased letter on which the drive will accessible (e.g. 'A')*/
#define LV_FS_WIN32_PATH "" /*Set the working directory. File/directory paths will be appended to it.*/
#define LV_FS_WIN32_CACHE_SIZE 0 /*>0 to cache this number of bytes in lv_fs_read()*/
#endif
/*API for FATFS (needs to be added separately). Uses f_open, f_read, etc*/
#define LV_USE_FS_FATFS 0
#if LV_USE_FS_FATFS
#define LV_FS_FATFS_LETTER '\0' /*Set an upper cased letter on which the drive will accessible (e.g. 'A')*/
#define LV_FS_FATFS_CACHE_SIZE 0 /*>0 to cache this number of bytes in lv_fs_read()*/
#endif
/*PNG decoder library*/
#define LV_USE_PNG 0
/*BMP decoder library*/
#define LV_USE_BMP 0
/* JPG + split JPG decoder library.
* Split JPG is a custom format optimized for embedded systems. */
#define LV_USE_SJPG 0
/*GIF decoder library*/
#define LV_USE_GIF 0
/*QR code library*/
#define LV_USE_QRCODE 0
/*FreeType library*/
#define LV_USE_FREETYPE 0
#if LV_USE_FREETYPE
/*Memory used by FreeType to cache characters [bytes] (-1: no caching)*/
#define LV_FREETYPE_CACHE_SIZE (16 * 1024)
#if LV_FREETYPE_CACHE_SIZE >= 0
/* 1: bitmap cache use the sbit cache, 0:bitmap cache use the image cache. */
/* sbit cache:it is much more memory efficient for small bitmaps(font size < 256) */
/* if font size >= 256, must be configured as image cache */
#define LV_FREETYPE_SBIT_CACHE 0
/* Maximum number of opened FT_Face/FT_Size objects managed by this cache instance. */
/* (0:use system defaults) */
#define LV_FREETYPE_CACHE_FT_FACES 0
#define LV_FREETYPE_CACHE_FT_SIZES 0
#endif
#endif
/*Rlottie library*/
#define LV_USE_RLOTTIE 0
/*FFmpeg library for image decoding and playing videos
*Supports all major image formats so do not enable other image decoder with it*/
#define LV_USE_FFMPEG 0
#if LV_USE_FFMPEG
/*Dump input information to stderr*/
#define LV_FFMPEG_DUMP_FORMAT 0
#endif
/*-----------
* Others
*----------*/
/*1: Enable API to take snapshot for object*/
#define LV_USE_SNAPSHOT 0
/*1: Enable Monkey test*/
#define LV_USE_MONKEY 0
/*1: Enable grid navigation*/
#define LV_USE_GRIDNAV 0
/*1: Enable lv_obj fragment*/
#define LV_USE_FRAGMENT 0
/*1: Support using images as font in label or span widgets */
#define LV_USE_IMGFONT 0
/*1: Enable a published subscriber based messaging system */
#define LV_USE_MSG 0
/*1: Enable Pinyin input method*/
/*Requires: lv_keyboard*/
#define LV_USE_IME_PINYIN 0
#if LV_USE_IME_PINYIN
/*1: Use default thesaurus*/
/*If you do not use the default thesaurus, be sure to use `lv_ime_pinyin` after setting the thesauruss*/
#define LV_IME_PINYIN_USE_DEFAULT_DICT 1
/*Set the maximum number of candidate panels that can be displayed*/
/*This needs to be adjusted according to the size of the screen*/
#define LV_IME_PINYIN_CAND_TEXT_NUM 6
/*Use 9 key input(k9)*/
#define LV_IME_PINYIN_USE_K9_MODE 1
#if LV_IME_PINYIN_USE_K9_MODE == 1
#define LV_IME_PINYIN_K9_CAND_TEXT_NUM 3
#endif // LV_IME_PINYIN_USE_K9_MODE
#endif
/*==================
* EXAMPLES
*==================*/
/*Enable the examples to be built with the library*/
#define LV_BUILD_EXAMPLES 0
/*===================
* DEMO USAGE
====================*/
/*Show some widget. It might be required to increase `LV_MEM_SIZE` */
#define LV_USE_DEMO_WIDGETS 0
#if LV_USE_DEMO_WIDGETS
#define LV_DEMO_WIDGETS_SLIDESHOW 0
#endif
/*Demonstrate the usage of encoder and keyboard*/
#define LV_USE_DEMO_KEYPAD_AND_ENCODER 0
/*Benchmark your system*/
#define LV_USE_DEMO_BENCHMARK 0
#if LV_USE_DEMO_BENCHMARK
/*Use RGB565A8 images with 16 bit color depth instead of ARGB8565*/
#define LV_DEMO_BENCHMARK_RGB565A8 0
#endif
/*Stress test for LVGL*/
#define LV_USE_DEMO_STRESS 0
/*Music player demo*/
#define LV_USE_DEMO_MUSIC 0
#if LV_USE_DEMO_MUSIC
#define LV_DEMO_MUSIC_SQUARE 0
#define LV_DEMO_MUSIC_LANDSCAPE 0
#define LV_DEMO_MUSIC_ROUND 0
#define LV_DEMO_MUSIC_LARGE 0
#define LV_DEMO_MUSIC_AUTO_PLAY 0
#endif
/*--END OF LV_CONF_H--*/
#endif /*LV_CONF_H*/
#endif /*End of "Content enable"*/

@ -1,29 +1,31 @@
#include "display.hpp" #include "display.hpp"
#include <atomic>
#include <cstdint> #include <cstdint>
#include <cstring> #include <cstring>
#include <memory> #include <memory>
#include <mutex>
#include "assert.h" #include "assert.h"
#include "driver/gpio.h" #include "driver/gpio.h"
#include "driver/spi_master.h" #include "driver/spi_master.h"
#include "esp_attr.h" #include "esp_attr.h"
#include "esp_err.h"
#include "esp_heap_caps.h" #include "esp_heap_caps.h"
#include "freertos/portable.h" #include "freertos/portable.h"
#include "freertos/portmacro.h" #include "freertos/portmacro.h"
#include "freertos/projdefs.h" #include "freertos/projdefs.h"
#include "hal/gpio_types.h" #include "hal/gpio_types.h"
#include "hal/lv_hal_disp.h"
#include "hal/spi_types.h" #include "hal/spi_types.h"
#include "lvgl/lvgl.h" #include "lvgl/lvgl.h"
#include "display_init.hpp" #include "display_init.hpp"
#include "gpio_expander.hpp"
static const char* kTag = "DISPLAY"; static const char* kTag = "DISPLAY";
static const uint8_t kDisplayWidth = 128; // TODO(jacqueline): Encode width and height variations in the init data.
static const uint8_t kDisplayHeight = 160; static const uint8_t kDisplayWidth = 128 + 2;
static const uint8_t kDisplayHeight = 160 + 1;
static const uint8_t kTransactionQueueSize = 10; static const uint8_t kTransactionQueueSize = 10;
/* /*
@ -37,43 +39,27 @@ static const int kDisplayBufferSize = (kDisplayWidth * kDisplayHeight) / 10;
// Allocate both buffers in static memory to ensure that they're in DRAM, with // Allocate both buffers in static memory to ensure that they're in DRAM, with
// minimal fragmentation. We most cases we always need these buffers anyway, so // minimal fragmentation. We most cases we always need these buffers anyway, so
// it's not a memory hit we can avoid anyway. // it's not a memory hit we can avoid.
// Note: 128 * 160 / 10 * 2 bpp * 2 buffers = 8 KiB // Note: 128 * 160 / 10 * 2 bpp * 2 buffers = 8 KiB
DMA_ATTR static lv_color_t sBuffer1[kDisplayBufferSize]; DMA_ATTR static lv_color_t sBuffer1[kDisplayBufferSize];
DMA_ATTR static lv_color_t sBuffer2[kDisplayBufferSize]; DMA_ATTR static lv_color_t sBuffer2[kDisplayBufferSize];
namespace drivers { namespace drivers {
// Static functions for interrop with the LVGL display driver API, which /*
// requires a function pointer. * Callback invoked by LVGL when there is new data to be written to the display.
namespace callback { */
static std::atomic<Display*> instance = nullptr; extern "C" void FlushDataCallback(lv_disp_drv_t* disp_drv,
extern "C" void flush_cb(lv_disp_drv_t* disp_drv,
const lv_area_t* area, const lv_area_t* area,
lv_color_t* color_map) { lv_color_t* color_map) {
auto instance_unwrapped = instance.load(); Display* instance = static_cast<Display*>(disp_drv->user_data);
if (instance_unwrapped == nullptr) { instance->OnLvglFlush(disp_drv, area, color_map);
ESP_LOGW(kTag, "uncaught flush callback");
return;
}
// TODO: what if a transaction comes in right now?
instance_unwrapped->Flush(disp_drv, area, color_map);
}
static void IRAM_ATTR post_cb(spi_transaction_t* transaction) {
auto instance_unwrapped = instance.load();
if (instance_unwrapped == nullptr) {
// Can't log in ISR.
return;
}
instance_unwrapped->PostTransaction(*transaction);
} }
} // namespace callback
auto Display::create(GpioExpander* expander, auto Display::create(GpioExpander* expander,
const displays::InitialisationData& init_data) const displays::InitialisationData& init_data)
-> cpp::result<std::unique_ptr<Display>, Error> { -> std::unique_ptr<Display> {
// First, turn on the LED backlight.
expander->set_pin(GpioExpander::DISPLAY_LED, 0); expander->set_pin(GpioExpander::DISPLAY_LED, 0);
expander->set_pin(GpioExpander::DISPLAY_POWER_ENABLE, 1); expander->set_pin(GpioExpander::DISPLAY_POWER_ENABLE, 1);
expander->Write(); expander->Write();
@ -94,16 +80,15 @@ auto Display::create(GpioExpander* expander,
.flags = 0, .flags = 0,
.queue_size = kTransactionQueueSize, .queue_size = kTransactionQueueSize,
.pre_cb = NULL, .pre_cb = NULL,
.post_cb = &callback::post_cb, .post_cb = NULL,
}; };
spi_device_handle_t handle; spi_device_handle_t handle;
spi_bus_add_device(VSPI_HOST, &spi_cfg, &handle); spi_bus_add_device(VSPI_HOST, &spi_cfg, &handle);
// TODO: ideally create this later? a bit awkward rn.
auto display = std::make_unique<Display>(expander, handle); auto display = std::make_unique<Display>(expander, handle);
// Now we reset the display into a known state, then configure it // Now we reset the display into a known state, then configure it
// TODO: set rotatoin // TODO(jacqueline): set rotation
ESP_LOGI(kTag, "Sending init sequences"); ESP_LOGI(kTag, "Sending init sequences");
for (int i = 0; i < init_data.num_sequences; i++) { for (int i = 0; i < init_data.num_sequences; i++) {
display->SendInitialisationSequence(init_data.sequences[i]); display->SendInitialisationSequence(init_data.sequences[i]);
@ -118,7 +103,8 @@ auto Display::create(GpioExpander* expander,
display->driver_.draw_buf = &display->buffers_; display->driver_.draw_buf = &display->buffers_;
display->driver_.hor_res = kDisplayWidth; display->driver_.hor_res = kDisplayWidth;
display->driver_.ver_res = kDisplayHeight; display->driver_.ver_res = kDisplayHeight;
display->driver_.flush_cb = &callback::flush_cb; display->driver_.flush_cb = &FlushDataCallback;
display->driver_.user_data = display.get();
ESP_LOGI(kTag, "Registering driver"); ESP_LOGI(kTag, "Registering driver");
display->display_ = lv_disp_drv_register(&display->driver_); display->display_ = lv_disp_drv_register(&display->driver_);
@ -127,23 +113,19 @@ auto Display::create(GpioExpander* expander,
} }
Display::Display(GpioExpander* gpio, spi_device_handle_t handle) Display::Display(GpioExpander* gpio, spi_device_handle_t handle)
: gpio_(gpio), handle_(handle) { : gpio_(gpio), handle_(handle) {}
callback::instance = this;
}
Display::~Display() { Display::~Display() {}
callback::instance = nullptr;
// TODO.
}
void Display::SendInitialisationSequence(const uint8_t* data) { void Display::SendInitialisationSequence(const uint8_t* data) {
uint8_t command, num_args; // Hold onto the bus for the entire sequence so that we're not interrupted
uint16_t sleep_duration_ms; // part way through.
spi_device_acquire_bus(handle_, portMAX_DELAY);
// First byte of the data is the number of commands. // First byte of the data is the number of commands.
for (int i = *(data++); i > 0; i--) { for (int i = *(data++); i > 0; i--) {
command = *(data++); uint8_t command = *(data++);
num_args = *(data++); uint8_t num_args = *(data++);
bool has_delay = (num_args & displays::kDelayBit) > 0; bool has_delay = (num_args & displays::kDelayBit) > 0;
num_args &= ~displays::kDelayBit; num_args &= ~displays::kDelayBit;
@ -151,123 +133,100 @@ void Display::SendInitialisationSequence(const uint8_t* data) {
data += num_args; data += num_args;
if (has_delay) { if (has_delay) {
sleep_duration_ms = *(data++); uint16_t sleep_duration_ms = *(data++);
if (sleep_duration_ms == 0xFF) { if (sleep_duration_ms == 0xFF) {
sleep_duration_ms = 500; sleep_duration_ms = 500;
} }
// Avoid hanging on to the bus whilst delaying.
spi_device_release_bus(handle_);
vTaskDelay(pdMS_TO_TICKS(sleep_duration_ms)); vTaskDelay(pdMS_TO_TICKS(sleep_duration_ms));
spi_device_acquire_bus(handle_, portMAX_DELAY);
} }
} }
spi_device_release_bus(handle_);
} }
void Display::SendCommandWithData(uint8_t command, void Display::SendCommandWithData(uint8_t command,
const uint8_t* data, const uint8_t* data,
size_t length, size_t length) {
uintptr_t flags) { SendCmd(&command, 1);
SendCmd(&command, 1, flags); SendData(data, length);
SendData(data, length, flags);
} }
void Display::SendCmd(const uint8_t* data, size_t length, uintptr_t flags) { void Display::SendCmd(const uint8_t* data, size_t length) {
SendTransaction(COMMAND, data, length, flags); SendTransaction(COMMAND, data, length);
} }
void Display::SendData(const uint8_t* data, size_t length, uintptr_t flags) { void Display::SendData(const uint8_t* data, size_t length) {
SendTransaction(DATA, data, length, flags); SendTransaction(DATA, data, length);
} }
void Display::SendTransaction(TransactionType type, void Display::SendTransaction(TransactionType type,
const uint8_t* data, const uint8_t* data,
size_t length, size_t length) {
uint32_t flags) { // TODO(jacqueline): What's sending this?
if (length == 0) { if (length == 0) {
return; return;
} }
// TODO: Use a memory pool for these. spi_transaction_t transaction;
spi_transaction_t* transaction = (spi_transaction_t*)heap_caps_calloc( memset(&transaction, 0, sizeof(transaction));
1, sizeof(spi_transaction_t), MALLOC_CAP_DMA);
transaction->rx_buffer = NULL; transaction.rx_buffer = NULL;
// Length is in bits, so multiply by 8. // Length is in bits, so multiply by 8.
transaction->length = length * 8; transaction.length = length * 8;
transaction->rxlength = 0; // Match `length` value. transaction.rxlength = 0; // Match `length` value.
// If the data to transmit is very short, then we can fit it directly // If the data to transmit is very short, then we can fit it directly
// inside the transaction struct. // inside the transaction struct.
if (length * 8 <= 32) { if (transaction.length <= 32) {
transaction->flags = SPI_TRANS_USE_TXDATA; transaction.flags = SPI_TRANS_USE_TXDATA;
std::memcpy(&transaction->tx_data, data, length); std::memcpy(&transaction.tx_data, data, length);
} else { } else {
// TODO: copy data to a DMA-capable transaction buffer // Note: LVGL's buffers are in DMA-accessible memory, so whatever pointer
transaction->tx_buffer = const_cast<uint8_t*>(data); // it handed us should be DMA-accessible already. No need to copy.
transaction.tx_buffer = data;
} }
transaction->user = reinterpret_cast<void*>(flags); // TODO(jacqueline): Move this to an on-board GPIO for speed.
gpio_->set_pin(GpioExpander::DISPLAY_DR, type);
// TODO: acquire the bus first? Or in an outer scope? gpio_->Write();
// TODO: fail gracefully
// ESP_ERROR_CHECK(spi_device_queue_trans(handle_, transaction,
// portMAX_DELAY));
//
ServiceTransactions(); // TODO(jacqueline): Handle these errors.
esp_err_t ret = spi_device_polling_transmit(handle_, &transaction);
gpio_->with( ESP_ERROR_CHECK(ret);
[&](auto& gpio) { gpio.set_pin(GpioExpander::DISPLAY_DR, type); });
ESP_ERROR_CHECK(spi_device_polling_transmit(handle_, transaction));
free(transaction);
} }
void Display::Flush(lv_disp_drv_t* disp_drv, void Display::OnLvglFlush(lv_disp_drv_t* disp_drv,
const lv_area_t* area, const lv_area_t* area,
lv_color_t* color_map) { lv_color_t* color_map) {
// Ideally we want to complete a single flush as quickly as possible, so grab
// the bus for this entire transaction sequence.
spi_device_acquire_bus(handle_, portMAX_DELAY);
// First we need to specify the rectangle of the display we're writing into.
uint16_t data[2] = {0, 0}; uint16_t data[2] = {0, 0};
data[0] = SPI_SWAP_DATA_TX(area->x1, 16); data[0] = SPI_SWAP_DATA_TX(area->x1, 16);
data[1] = SPI_SWAP_DATA_TX(area->x2, 16); data[1] = SPI_SWAP_DATA_TX(area->x2, 16);
SendCommandWithData(displays::ST77XX_CASET, (uint8_t*)data, 4); SendCommandWithData(displays::ST77XX_CASET, reinterpret_cast<uint8_t*>(data),
4);
data[0] = SPI_SWAP_DATA_TX(area->y1, 16); data[0] = SPI_SWAP_DATA_TX(area->y1, 16);
data[1] = SPI_SWAP_DATA_TX(area->y2, 16); data[1] = SPI_SWAP_DATA_TX(area->y2, 16);
SendCommandWithData(displays::ST77XX_RASET, (uint8_t*)data, 4); SendCommandWithData(displays::ST77XX_RASET, reinterpret_cast<uint8_t*>(data),
4);
// Now send the pixels for this region.
uint32_t size = lv_area_get_width(area) * lv_area_get_height(area); uint32_t size = lv_area_get_width(area) * lv_area_get_height(area);
SendCommandWithData(displays::ST77XX_RAMWR, (uint8_t*)color_map, size * 2, SendCommandWithData(displays::ST77XX_RAMWR,
LVGL_FLUSH); reinterpret_cast<uint8_t*>(color_map), size * 2);
// ESP_LOGI(kTag, "finished flush."); spi_device_release_bus(handle_);
// lv_disp_flush_ready(&driver_);
}
void Display::PostTransaction(const spi_transaction_t& transaction) {
if (reinterpret_cast<uintptr_t>(transaction.user) & LVGL_FLUSH) {
lv_disp_flush_ready(&driver_); lv_disp_flush_ready(&driver_);
} }
}
void Display::ServiceTransactions() {
// todo
if (1)
return;
spi_transaction_t* transaction = nullptr;
// TODO: just wait '1' here, provide mechanism to wait for sure (poll?)
while (spi_device_get_trans_result(handle_, &transaction, pdMS_TO_TICKS(1)) !=
ESP_ERR_TIMEOUT) {
ESP_LOGI(kTag, "cleaning up finished transaction");
// TODO: a bit dodge lmao
// TODO: also this should happen in the post callback instead i guess?
if (transaction->length > 1000) {
ESP_LOGI(kTag, "finished flush.");
lv_disp_flush_ready(&driver_);
}
// TODO: place back into pool.
free(transaction);
}
}
} // namespace drivers } // namespace drivers

@ -1,6 +1,7 @@
#pragma once #pragma once
#include <cstdint> #include <cstdint>
#include <memory>
#include "driver/spi_master.h" #include "driver/spi_master.h"
#include "lvgl/lvgl.h" #include "lvgl/lvgl.h"
@ -8,33 +9,31 @@
#include "display_init.hpp" #include "display_init.hpp"
#include "gpio_expander.hpp" #include "gpio_expander.hpp"
#include "sys/_stdint.h"
namespace drivers { namespace drivers {
/* /*
* Display driver for LVGL. * LVGL display driver for ST77XX family displays.
*/ */
class Display { class Display {
public: public:
enum Error {}; /*
* Creates the display driver, and resets and reinitialises the display
* over SPI. This never fails, since unfortunately these display don't give
* us back any kind of signal to tell us we're actually using them correctly.
*/
static auto create(GpioExpander* expander, static auto create(GpioExpander* expander,
const displays::InitialisationData& init_data) const displays::InitialisationData& init_data)
-> cpp::result<std::unique_ptr<Display>, Error>; -> std::unique_ptr<Display>;
Display(GpioExpander* gpio, spi_device_handle_t handle); Display(GpioExpander* gpio, spi_device_handle_t handle);
~Display(); ~Display();
void WriteData(); /* Driver callback invoked by LVGL when there is new data to display. */
void OnLvglFlush(lv_disp_drv_t* disp_drv,
void Flush(lv_disp_drv_t* disp_drv,
const lv_area_t* area, const lv_area_t* area,
lv_color_t* color_map); lv_color_t* color_map);
void IRAM_ATTR PostTransaction(const spi_transaction_t& transaction);
void ServiceTransactions();
private: private:
GpioExpander* gpio_; GpioExpander* gpio_;
spi_device_handle_t handle_; spi_device_handle_t handle_;
@ -48,23 +47,15 @@ class Display {
DATA = 1, DATA = 1,
}; };
enum TransactionFlags {
LVGL_FLUSH = 1,
};
void SendInitialisationSequence(const uint8_t* data); void SendInitialisationSequence(const uint8_t* data);
void SendCommandWithData(uint8_t command, void SendCommandWithData(uint8_t command, const uint8_t* data, size_t length);
const uint8_t* data, void SendCmd(const uint8_t* data, size_t length);
size_t length, void SendData(const uint8_t* data, size_t length);
uintptr_t flags = 0);
void SendCmd(const uint8_t* data, size_t length, uintptr_t flags = 0);
void SendData(const uint8_t* data, size_t length, uintptr_t flags = 0);
void SendTransaction(TransactionType type, void SendTransaction(TransactionType type,
const uint8_t* data, const uint8_t* data,
size_t length, size_t length);
uint32_t flags = 0);
}; };
} // namespace drivers } // namespace drivers

@ -15,11 +15,13 @@
#include "esp_freertos_hooks.h" #include "esp_freertos_hooks.h"
#include "esp_intr_alloc.h" #include "esp_intr_alloc.h"
#include "esp_log.h" #include "esp_log.h"
#include "font/lv_font.h"
#include "freertos/portmacro.h" #include "freertos/portmacro.h"
#include "hal/gpio_types.h" #include "hal/gpio_types.h"
#include "hal/spi_types.h" #include "hal/spi_types.h"
#include "lvgl/lvgl.h" #include "lvgl/lvgl.h"
#include "misc/lv_color.h" #include "misc/lv_color.h"
#include "misc/lv_style.h"
#include "misc/lv_timer.h" #include "misc/lv_timer.h"
#include "widgets/lv_label.h" #include "widgets/lv_label.h"
@ -63,22 +65,24 @@ extern "C" void lvgl_main(void* voidArgs) {
esp_register_freertos_tick_hook(&tick_hook); esp_register_freertos_tick_hook(&tick_hook);
ESP_LOGI(TAG, "init display"); ESP_LOGI(TAG, "init display");
auto display_res = std::unique_ptr<drivers::Display> display =
drivers::Display::create(gpio_expander, drivers::displays::kST7735R); drivers::Display::create(gpio_expander, drivers::displays::kST7735R);
if (display_res.has_error()) {
ESP_LOGE(TAG, "Failed: %d", display_res.error()); lv_style_t style;
return; lv_style_init(&style);
} lv_style_set_text_color(&style, LV_COLOR_MAKE(0xFF, 0, 0));
std::unique_ptr<drivers::Display> display = std::move(display_res.value()); // TODO: find a nice bitmap font for this display size and density.
// lv_style_set_text_font(&style, &lv_font_montserrat_24);
auto label = lv_label_create(NULL); auto label = lv_label_create(NULL);
lv_label_set_text(label, "g'day, cunts!"); lv_label_set_text(label, "COLOURS!!");
lv_obj_add_style(label, &style, 0);
lv_obj_center(label); lv_obj_center(label);
lv_scr_load(label); lv_scr_load(label);
while (1) { while (1) {
lv_timer_handler(); lv_timer_handler();
// display->ServiceTransactions();
vTaskDelay(pdMS_TO_TICKS(10)); vTaskDelay(pdMS_TO_TICKS(10));
} }

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