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Initial commit with driver and LittleVGL.

This commit is contained in:
imi415 2021-01-23 16:32:13 +00:00
commit 6bfc51062a
14 changed files with 1333 additions and 0 deletions
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3
.gitmodules vendored Normal file
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[submodule "lib/LittleVGL"]
path = lib/LittleVGL
url = https://github.com/lvgl/lvgl.git

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CMakeLists.txt Normal file
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cmake_minimum_required(VERSION 3.12)
project(lcd_jlx C)
set(CMAKE_C_STANDARD 11)
set(SOURCES
main.c
st75256_impl.c
user_tasks.c
tasks/task_lvgl.c
lib/st75256_lcd/st75256_lcd.c
lib/LittleVGL/src/lv_themes/lv_theme.c
lib/LittleVGL/src/lv_themes/lv_theme_empty.c
lib/LittleVGL/src/lv_themes/lv_theme_material.c
lib/LittleVGL/src/lv_themes/lv_theme_mono.c
lib/LittleVGL/src/lv_themes/lv_theme_template.c
lib/LittleVGL/src/lv_core/lv_indev.c
lib/LittleVGL/src/lv_core/lv_refr.c
lib/LittleVGL/src/lv_core/lv_style.c
lib/LittleVGL/src/lv_core/lv_obj.c
lib/LittleVGL/src/lv_core/lv_disp.c
lib/LittleVGL/src/lv_core/lv_group.c
lib/LittleVGL/src/lv_gpu/lv_gpu_nxp_pxp_osa.c
lib/LittleVGL/src/lv_gpu/lv_gpu_stm32_dma2d.c
lib/LittleVGL/src/lv_gpu/lv_gpu_nxp_pxp.c
lib/LittleVGL/src/lv_gpu/lv_gpu_nxp_vglite.c
lib/LittleVGL/src/lv_misc/lv_gc.c
lib/LittleVGL/src/lv_misc/lv_log.c
lib/LittleVGL/src/lv_misc/lv_printf.c
lib/LittleVGL/src/lv_misc/lv_bidi.c
lib/LittleVGL/src/lv_misc/lv_ll.c
lib/LittleVGL/src/lv_misc/lv_mem.c
lib/LittleVGL/src/lv_misc/lv_templ.c
lib/LittleVGL/src/lv_misc/lv_fs.c
lib/LittleVGL/src/lv_misc/lv_txt_ap.c
lib/LittleVGL/src/lv_misc/lv_txt.c
lib/LittleVGL/src/lv_misc/lv_task.c
lib/LittleVGL/src/lv_misc/lv_async.c
lib/LittleVGL/src/lv_misc/lv_math.c
lib/LittleVGL/src/lv_misc/lv_utils.c
lib/LittleVGL/src/lv_misc/lv_area.c
lib/LittleVGL/src/lv_misc/lv_debug.c
lib/LittleVGL/src/lv_misc/lv_anim.c
lib/LittleVGL/src/lv_misc/lv_color.c
lib/LittleVGL/src/lv_widgets/lv_objx_templ.c
lib/LittleVGL/src/lv_widgets/lv_table.c
lib/LittleVGL/src/lv_widgets/lv_btnmatrix.c
lib/LittleVGL/src/lv_widgets/lv_imgbtn.c
lib/LittleVGL/src/lv_widgets/lv_page.c
lib/LittleVGL/src/lv_widgets/lv_slider.c
lib/LittleVGL/src/lv_widgets/lv_cont.c
lib/LittleVGL/src/lv_widgets/lv_spinner.c
lib/LittleVGL/src/lv_widgets/lv_keyboard.c
lib/LittleVGL/src/lv_widgets/lv_list.c
lib/LittleVGL/src/lv_widgets/lv_label.c
lib/LittleVGL/src/lv_widgets/lv_bar.c
lib/LittleVGL/src/lv_widgets/lv_img.c
lib/LittleVGL/src/lv_widgets/lv_textarea.c
lib/LittleVGL/src/lv_widgets/lv_roller.c
lib/LittleVGL/src/lv_widgets/lv_chart.c
lib/LittleVGL/src/lv_widgets/lv_calendar.c
lib/LittleVGL/src/lv_widgets/lv_checkbox.c
lib/LittleVGL/src/lv_widgets/lv_linemeter.c
lib/LittleVGL/src/lv_widgets/lv_cpicker.c
lib/LittleVGL/src/lv_widgets/lv_tabview.c
lib/LittleVGL/src/lv_widgets/lv_led.c
lib/LittleVGL/src/lv_widgets/lv_switch.c
lib/LittleVGL/src/lv_widgets/lv_canvas.c
lib/LittleVGL/src/lv_widgets/lv_line.c
lib/LittleVGL/src/lv_widgets/lv_objmask.c
lib/LittleVGL/src/lv_widgets/lv_tileview.c
lib/LittleVGL/src/lv_widgets/lv_win.c
lib/LittleVGL/src/lv_widgets/lv_arc.c
lib/LittleVGL/src/lv_widgets/lv_btn.c
lib/LittleVGL/src/lv_widgets/lv_gauge.c
lib/LittleVGL/src/lv_widgets/lv_dropdown.c
lib/LittleVGL/src/lv_widgets/lv_msgbox.c
lib/LittleVGL/src/lv_widgets/lv_spinbox.c
lib/LittleVGL/src/lv_font/lv_font_montserrat_34.c
lib/LittleVGL/src/lv_font/lv_font_montserrat_38.c
lib/LittleVGL/src/lv_font/lv_font_montserrat_32.c
lib/LittleVGL/src/lv_font/lv_font_montserrat_26.c
lib/LittleVGL/src/lv_font/lv_font_montserrat_22.c
lib/LittleVGL/src/lv_font/lv_font_montserrat_24.c
lib/LittleVGL/src/lv_font/lv_font_montserrat_46.c
lib/LittleVGL/src/lv_font/lv_font_dejavu_16_persian_hebrew.c
lib/LittleVGL/src/lv_font/lv_font_montserrat_18.c
lib/LittleVGL/src/lv_font/lv_font_montserrat_8.c
lib/LittleVGL/src/lv_font/lv_font_loader.c
lib/LittleVGL/src/lv_font/lv_font_simsun_16_cjk.c
lib/LittleVGL/src/lv_font/lv_font_montserrat_30.c
lib/LittleVGL/src/lv_font/lv_font_montserrat_36.c
lib/LittleVGL/src/lv_font/lv_font_montserrat_48.c
lib/LittleVGL/src/lv_font/lv_font_montserrat_12_subpx.c
lib/LittleVGL/src/lv_font/lv_font.c
lib/LittleVGL/src/lv_font/lv_font_unscii_8.c
lib/LittleVGL/src/lv_font/lv_font_montserrat_42.c
lib/LittleVGL/src/lv_font/lv_font_montserrat_40.c
lib/LittleVGL/src/lv_font/lv_font_montserrat_12.c
lib/LittleVGL/src/lv_font/lv_font_montserrat_10.c
lib/LittleVGL/src/lv_font/lv_font_fmt_txt.c
lib/LittleVGL/src/lv_font/lv_font_unscii_16.c
lib/LittleVGL/src/lv_font/lv_font_montserrat_28.c
lib/LittleVGL/src/lv_font/lv_font_montserrat_14.c
lib/LittleVGL/src/lv_font/lv_font_montserrat_28_compressed.c
lib/LittleVGL/src/lv_font/lv_font_montserrat_44.c
lib/LittleVGL/src/lv_font/lv_font_montserrat_16.c
lib/LittleVGL/src/lv_font/lv_font_montserrat_20.c
lib/LittleVGL/src/lv_draw/lv_draw_triangle.c
lib/LittleVGL/src/lv_draw/lv_draw_img.c
lib/LittleVGL/src/lv_draw/lv_img_buf.c
lib/LittleVGL/src/lv_draw/lv_draw_arc.c
lib/LittleVGL/src/lv_draw/lv_draw_mask.c
lib/LittleVGL/src/lv_draw/lv_img_decoder.c
lib/LittleVGL/src/lv_draw/lv_draw_rect.c
lib/LittleVGL/src/lv_draw/lv_draw_line.c
lib/LittleVGL/src/lv_draw/lv_draw_blend.c
lib/LittleVGL/src/lv_draw/lv_draw_label.c
lib/LittleVGL/src/lv_draw/lv_img_cache.c
lib/LittleVGL/src/lv_hal/lv_hal_disp.c
lib/LittleVGL/src/lv_hal/lv_hal_indev.c
lib/LittleVGL/src/lv_hal/lv_hal_tick.c
)
include_directories(
include
lib/st75256_lcd
lib/LittleVGL
)
add_definitions(-DLV_CONF_SIMPLE -D_GNU_SOURCE)
add_executable(lcd_jlx ${SOURCES})
target_link_libraries(lcd_jlx gpiod pthread)

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include/config.h Normal file
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#ifndef __CONFIG_H
#define __CONFIG_H
#ifndef CONFIG_SPIDEV_FILENAME
#define CONFIG_SPIDEV_FILENAME "/dev/spidev0.0"
#endif
#ifndef CONFIG_GPIO_CONSUMER
#define CONFIG_GPIO_CONSUMER "jlx_lcd"
#endif
#ifndef CONFIG_GPIO_CHIP
#define CONFIG_GPIO_CHIP "/dev/gpiochip0"
#endif
#ifndef CONFIG_RES_PIN
#define CONFIG_RES_PIN 27
#endif
#ifndef CONFIG_DC_PIN
#define CONFIG_DC_PIN 25
#endif
#endif

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include/lv_conf.h Normal file
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/**
* @file lv_conf.h
* Configuration file for v7.9.1
*/
/*
* 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 <stdint.h>
/*====================
Graphical settings
*====================*/
/* Maximal horizontal and vertical resolution to support by the library.*/
#define LV_HOR_RES_MAX (256)
#define LV_VER_RES_MAX (128)
/* Color depth:
* - 1: 1 byte per pixel
* - 8: RGB332
* - 16: RGB565
* - 32: ARGB8888
*/
#define LV_COLOR_DEPTH 1
/* 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 130 /*[px]*/
/* The the real width of the display changes some default values:
* default object sizes, layout of examples, etc.
* According to the width of the display (hor. res. / dpi)
* the displays fall in 4 categories.
* The 4th is extra large which has no upper limit so not listed here
* The upper limit of the categories are set below in 0.1 inch unit.
*/
#define LV_DISP_SMALL_LIMIT 30
#define LV_DISP_MEDIUM_LIMIT 50
#define LV_DISP_LARGE_LIMIT 70
/* 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 1
#if LV_MEM_CUSTOM == 0
/* Size of the memory used by `lv_mem_alloc` in bytes (>= 2kB)*/
# define LV_MEM_SIZE (32U * 1024U)
/* Compiler 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 <stdlib.h> /*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*/
/* Use the standard memcpy and memset instead of LVGL's own functions.
* The standard functions might or might not be faster depending on their implementation. */
#define LV_MEMCPY_MEMSET_STD 1
/* 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 10
/* Long press time in milliseconds.
* Time to send `LV_EVENT_LONG_PRESSED`) */
#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
/* Gesture threshold in pixels */
#define LV_INDEV_DEF_GESTURE_LIMIT 50
/* Gesture min velocity at release before swipe (pixels)*/
#define LV_INDEV_DEF_GESTURE_MIN_VELOCITY 3
/*==================
* 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 on rectangles*/
#define LV_USE_SHADOW 1
#if LV_USE_SHADOW
/* 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
#endif
/*1: enable outline drawing on rectangles*/
#define LV_USE_OUTLINE 1
/*1: enable pattern drawing on rectangles*/
#define LV_USE_PATTERN 1
/*1: enable value string drawing on rectangles*/
#define LV_USE_VALUE_STR 1
/* 1: Use other blend modes than normal (`LV_BLEND_MODE_...`)*/
#define LV_USE_BLEND_MODES 1
/* 1: Use the `opa_scale` style property to set the opacity of an object and its children at once*/
#define LV_USE_OPA_SCALE 1
/* 1: Use image zoom and rotation*/
#define LV_USE_IMG_TRANSFORM 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 1 /*Only enables `gpu_fill_cb` and `gpu_blend_cb` in the disp. drv- */
#define LV_USE_GPU_STM32_DMA2D 0
/*If enabling LV_USE_GPU_STM32_DMA2D, LV_GPU_DMA2D_CMSIS_INCLUDE 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
/*1: Use PXP for CPU off-load on NXP RTxxx platforms */
#define LV_USE_GPU_NXP_PXP 0
/*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 FSL_RTOS_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
/*1: Use VG-Lite for CPU offload on NXP RTxxx platforms */
#define LV_USE_GPU_NXP_VG_LITE 0
/* 1: Enable file system (might be required for images */
#define LV_USE_FILESYSTEM 1
#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
/*1: Show CPU usage and FPS count in the right bottom corner*/
#define LV_USE_PERF_MONITOR 0
/*1: Use the functions and types from the older API if possible */
#define LV_USE_API_EXTENSION_V6 1
#define LV_USE_API_EXTENSION_V7 1
/*========================
* 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.
* Set it to 0 to disable caching */
#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
*====================*/
/* 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_task_handler` function */
#define LV_ATTRIBUTE_TASK_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
/* With size optimization (-Os) the compiler might not align data to
* 4 or 8 byte boundary. Some HW may need even 32 or 64 bytes.
* This alignment will be explicitly applied where needed.
* LV_ATTRIBUTE_MEM_ALIGN_SIZE should be used to specify required align size.
* E.g. __attribute__((aligned(LV_ATTRIBUTE_MEM_ALIGN_SIZE))) */
#define LV_ATTRIBUTE_MEM_ALIGN
/* Attribute to mark large constant arrays for example
* font's bitmaps */
#define LV_ATTRIBUTE_LARGE_CONST
/* Prefix performance critical functions to place them into a faster memory (e.g RAM)
* Uses 15-20 kB extra memory */
#define LV_ATTRIBUTE_FAST_MEM
/* 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
*
* The default value just prevents a GCC warning.
*/
#define LV_EXPORT_CONST_INT(int_value) struct _silence_gcc_warning
/* 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
/*===================
* 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 "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*/
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_cb`*/
# define LV_LOG_PRINTF 0
#endif /*LV_USE_LOG*/
/*=================
* Debug settings
*================*/
/* If Debug is enabled LittelvGL validates the parameters of the functions.
* If an invalid parameter is found an error log message is printed and
* the MCU halts at the error. (`LV_USE_LOG` should be enabled)
* If you are debugging the MCU you can pause
* the debugger to see exactly where the issue is.
*
* The behavior of asserts can be overwritten by redefining them here.
* E.g. #define LV_ASSERT_MEM(p) <my_assert_code>
*/
#define LV_USE_DEBUG 1
#if LV_USE_DEBUG
/*Check if the parameter is NULL. (Quite fast) */
#define LV_USE_ASSERT_NULL 1
/*Checks is the memory is successfully allocated or no. (Quite fast)*/
#define LV_USE_ASSERT_MEM 1
/*Check the integrity of `lv_mem` after critical operations. (Slow)*/
#define LV_USE_ASSERT_MEM_INTEGRITY 0
/* Check the strings.
* Search for NULL, very long strings, invalid characters, and unnatural repetitions. (Slow)
* If disabled `LV_USE_ASSERT_NULL` will be performed instead (if it's enabled) */
#define LV_USE_ASSERT_STR 0
/* Check NULL, the object's type and existence (e.g. not deleted). (Quite slow)
* If disabled `LV_USE_ASSERT_NULL` will be performed instead (if it's enabled) */
#define LV_USE_ASSERT_OBJ 0
/*Check if the styles are properly initialized. (Fast)*/
#define LV_USE_ASSERT_STYLE 0
#endif /*LV_USE_DEBUG*/
/*==================
* 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.lvgl.io/v7/en/html/overview/font.html
* To create a new font go to: https://lvgl.com/ttf-font-to-c-array
*/
/* Montserrat fonts with 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, PErisan letters and all their forms*/
#define LV_FONT_SIMSUN_16_CJK 0 /*1000 most common CJK radicals*/
/*Pixel perfect monospace font
* http://pelulamu.net/unscii/ */
#define LV_FONT_UNSCII_8 0
#define LV_FONT_UNSCII_16 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
/* 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
/* Enables/disables support for compressed fonts. If it's disabled, compressed
* glyphs cannot be processed by the library and won't be rendered.
*/
#define LV_USE_FONT_COMPRESSED 1
/* Enable subpixel rendering */
#define LV_USE_FONT_SUBPX 1
#if LV_USE_FONT_SUBPX
/* Set the pixel order of the display.
* Important only if "subpx fonts" are used.
* With "normal" font it doesn't matter.
*/
#define LV_FONT_SUBPX_BGR 0
#endif
/*Declare the type of the user data of fonts (can be e.g. `void *`, `int`, `struct`)*/
typedef void * lv_font_user_data_t;
/*================
* THEME USAGE
*================*/
/*Always enable at least on theme*/
/* No theme, you can apply your styles as you need
* No flags. Set LV_THEME_DEFAULT_FLAG 0 */
#define LV_USE_THEME_EMPTY 1
/*Simple to the create your theme based on it
* No flags. Set LV_THEME_DEFAULT_FLAG 0 */
#define LV_USE_THEME_TEMPLATE 1
/* A fast and impressive theme.
* Flags:
* LV_THEME_MATERIAL_FLAG_LIGHT: light theme
* LV_THEME_MATERIAL_FLAG_DARK: dark theme
* LV_THEME_MATERIAL_FLAG_NO_TRANSITION: disable transitions (state change animations)
* LV_THEME_MATERIAL_FLAG_NO_FOCUS: disable indication of focused state)
* */
#define LV_USE_THEME_MATERIAL 1
/* Mono-color theme for monochrome displays.
* If LV_THEME_DEFAULT_COLOR_PRIMARY is LV_COLOR_BLACK the
* texts and borders will be black and the background will be
* white. Else the colors are inverted.
* No flags. Set LV_THEME_DEFAULT_FLAG 0 */
#define LV_USE_THEME_MONO 1
#define LV_THEME_DEFAULT_INCLUDE <stdint.h> /*Include a header for the init. function*/
#define LV_THEME_DEFAULT_INIT lv_theme_material_init
#define LV_THEME_DEFAULT_COLOR_PRIMARY lv_color_hex(0x01a2b1)
#define LV_THEME_DEFAULT_COLOR_SECONDARY lv_color_hex(0x44d1b6)
#define LV_THEME_DEFAULT_FLAG LV_THEME_MATERIAL_FLAG_LIGHT
#define LV_THEME_DEFAULT_FONT_SMALL &lv_font_montserrat_14
#define LV_THEME_DEFAULT_FONT_NORMAL &lv_font_montserrat_14
#define LV_THEME_DEFAULT_FONT_SUBTITLE &lv_font_montserrat_14
#define LV_THEME_DEFAULT_FONT_TITLE &lv_font_montserrat_14
/*=================
* 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_BIDI_DIR_LTR` Left-to-Right
* `LV_BIDI_DIR_RTL` Right-to-Left
* `LV_BIDI_DIR_AUTO` detect texts base direction */
#define LV_BIDI_BASE_DIR_DEF LV_BIDI_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
/*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_DISABLE_FLOAT 1
#endif /*LV_SPRINTF_CUSTOM*/
/*===================
* LV_OBJ SETTINGS
*==================*/
#if LV_USE_USER_DATA
/*Declare the type of the user data of object (can be e.g. `void *`, `int`, `struct`)*/
typedef void * lv_obj_user_data_t;
/*Provide a function to free user data*/
#define LV_USE_USER_DATA_FREE 0
#if LV_USE_USER_DATA_FREE
# define LV_USER_DATA_FREE_INCLUDE "something.h" /*Header for user data free function*/
/* Function prototype : void user_data_free(lv_obj_t * obj); */
# define LV_USER_DATA_FREE (user_data_free) /*Invoking for user data free function*/
#endif
#endif
/*1: enable `lv_obj_realign()` 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_TINY
/*==================
* LV OBJ X USAGE
*================*/
/*
* Documentation of the object types: https://docs.lvgl.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
/*Button matrix (dependencies: -)*/
#define LV_USE_BTNMATRIX 1
/*Calendar (dependencies: -)*/
#define LV_USE_CALENDAR 1
#if LV_USE_CALENDAR
# define LV_CALENDAR_WEEK_STARTS_MONDAY 0
#endif
/*Canvas (dependencies: lv_img)*/
#define LV_USE_CANVAS 1
/*Check box (dependencies: lv_btn, lv_label)*/
#define LV_USE_CHECKBOX 1
/*Chart (dependencies: -)*/
#define LV_USE_CHART 1
#if LV_USE_CHART
# define LV_CHART_AXIS_TICK_LABEL_MAX_LEN 256
#endif
/*Container (dependencies: -*/
#define LV_USE_CONT 1
/*Color picker (dependencies: -*/
#define LV_USE_CPICKER 1
/*Drop down list (dependencies: lv_page, lv_label, lv_symbol_def.h)*/
#define LV_USE_DROPDOWN 1
#if LV_USE_DROPDOWN != 0
/*Open and close default animation time [ms] (0: no animation)*/
# define LV_DROPDOWN_DEF_ANIM_TIME 200
#endif
/*Gauge (dependencies:lv_bar, lv_linemeter)*/
#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_KEYBOARD 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
#if LV_USE_LED
# define LV_LED_BRIGHT_MIN 120 /*Minimal brightness*/
# define LV_LED_BRIGHT_MAX 255 /*Maximal brightness*/
#endif
/*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_LINEMETER 1
#if LV_USE_LINEMETER
/* Draw line more precisely at cost of performance.
* Useful if there are lot of lines any minor are visible
* 0: No extra precision
* 1: Some extra precision
* 2: Best precision
*/
# define LV_LINEMETER_PRECISE 1
#endif
/*Mask (dependencies: -)*/
#define LV_USE_OBJMASK 1
/*Message box (dependencies: lv_rect, lv_btnm, lv_label)*/
#define LV_USE_MSGBOX 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_SPINNER 1
#if LV_USE_SPINNER != 0
# define LV_SPINNER_DEF_ARC_LENGTH 60 /*[deg]*/
# define LV_SPINNER_DEF_SPIN_TIME 1000 /*[ms]*/
# define LV_SPINNER_DEF_ANIM LV_SPINNER_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_SWITCH 1
/*Text area (dependencies: lv_label, lv_page)*/
#define LV_USE_TEXTAREA 1
#if LV_USE_TEXTAREA != 0
# define LV_TEXTAREA_DEF_CURSOR_BLINK_TIME 400 /*ms*/
# define LV_TEXTAREA_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
# define LV_TABLE_CELL_STYLE_CNT 4
#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--*/
#endif /*LV_CONF_H*/
#endif /*End of "Content enable"*/

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#ifndef __lcd_impl_IMPL_H
#define __lcd_impl_IMPL_H
// SPIDEV
#include <fcntl.h>
#include <unistd.h>
#include <sys/ioctl.h>
#include <linux/types.h>
#include <linux/spi/spidev.h>
// LIBGPIOD
#include <gpiod.h>
// USER
#include "st75256_lcd.h"
#include "config.h"
typedef struct {
int spi_fd;
struct gpiod_chip *gpio_chip;
struct gpiod_line *gpio_line_res;
struct gpiod_line *gpio_line_dc;
} _st75256_impl_t;
_st75256_impl_t *_lcd_impl_init(void);
int _lcd_impl_deinit(_st75256_impl_t *handle);
st75256_ret_t _lcd_impl_write_cmd(void *handle, uint8_t *cmd, uint8_t len);
st75256_ret_t _lcd_impl_write_data(void *handle, uint8_t *data, uint16_t len);
st75256_ret_t _lcd_impl_reset(void *handle);
st75256_ret_t _lcd_impl_delay(void *handle, uint32_t usec);
#endif

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#ifndef __USER_TASKS_H
#define __USER_TASKS_H
#include <pthread.h>
void user_tasks_init(void);
void user_tasks_loop(void);
void user_tasks_deinit(void);
int lvgl_task_init(void);
int lvgl_task_deinit(void);
extern pthread_t lvgl_tick_thread_handle;
void *lvgl_tick_thread(void *arguments);
extern pthread_t lvgl_task_thread_handle;
void *lvgl_task_thread(void *arguments);
#endif

1
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Subproject commit 0aefab358b1c43f1dbb03cb65160f395032dc00d

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lib/st75256_lcd/st75256_lcd.c Normal file
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#include "st75256_lcd.h"
uint8_t jlx_25664_init_sequence[] = {
0x00, 0x30,
0x00, 0x94,
0x00, 0x31,
0x01, 0xD7, 0x9F,
0x03, 0x32, 0x00, 0x01, 0x03,
0x10, 0x20, 0x01, 0x03, 0x05, 0x07, 0x09, 0x0B, 0x0D, 0x10, 0x11, 0x13, 0x15, 0x17, 0x19, 0x1B, 0x1D, 0x1F,
0x00, 0x30,
0x02, 0x75, 0x00, 0x14,
0x02, 0x15, 0x00, 0xFF,
0x02, 0xBC, 0x00, 0xA6,
0x03, 0xCA, 0x00, 0x9F, 0x20,
0x01, 0xF0, 0x10,
0x02, 0x81, 0x36, 0x04,
0x01, 0x20, 0x0B
};
st75256_ret_t _st75256_hardware_reset(st75256_t *lcd) {
ST75256_ERROR_CHECK(lcd->cb.reset_cb(lcd->user_data));
return ST75256_OK;
}
st75256_ret_t _st75256_init_seq(st75256_t *lcd) {
uint16_t i = 0;
while(i < sizeof(ST75256_PANEL_SELECTION)) {
ST75256_ERROR_CHECK(lcd->cb.write_cmd_cb(lcd->user_data, &ST75256_PANEL_SELECTION[i + 1], ST75256_PANEL_SELECTION[i] + 1));
i += ST75256_PANEL_SELECTION[i] + 2;
}
return ST75256_OK;
}
st75256_ret_t _st75256_display_on(st75256_t *lcd) {
uint8_t cmd = 0xAF;
ST75256_ERROR_CHECK(lcd->cb.write_cmd_cb(lcd->user_data, &cmd, 0x01));
}
st75256_ret_t st75256_init(st75256_t *lcd) {
ST75256_ERROR_CHECK(_st75256_hardware_reset(lcd));
ST75256_ERROR_CHECK(_st75256_init_seq(lcd));
ST75256_ERROR_CHECK(lcd->cb.delay_cb(lcd->user_data, 200));
ST75256_ERROR_CHECK(_st75256_display_on(lcd));
return ST75256_OK;
}
st75256_ret_t st75256_set_contrast(st75256_t *lcd, uint16_t contrast) {
uint8_t cmd[3] = { 0x81, contrast & 0x3F, (contrast >> 6U) & 0x07 };
ST75256_ERROR_CHECK(lcd->cb.write_cmd_cb(lcd->user_data, cmd, 0x03));
return ST75256_OK;
}
st75256_ret_t st75256_set_mode(st75256_t *lcd, st75256_mode_t mode) {
uint8_t cmd[2] = { 0xF0, 0x10 };
if(mode == ST75256_GREY) {
cmd[1] |= 0x01;
}
ST75256_ERROR_CHECK(lcd->cb.write_cmd_cb(lcd->user_data, cmd, 0x02));
lcd->mode = mode;
return ST75256_OK;
}
st75256_ret_t st75256_cursor(st75256_t *lcd, uint8_t x_start, uint8_t x_end, uint8_t y_start, uint8_t y_end) {
}

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#ifndef __ST75256_LCD_H
#define __ST75256_LCD_H
#include <stdint.h>
#define ST75256_PANEL_SELECTION jlx_25664_init_sequence
typedef enum {
ST75256_OK,
ST75256_ERROR
} st75256_ret_t;
typedef enum {
ST75256_MONO,
ST75256_GREY
} st75256_mode_t;
typedef struct {
st75256_ret_t (*write_cmd_cb)(void *handle, uint8_t *cmd, uint8_t len);
st75256_ret_t (*write_data_cb)(void *handle, uint8_t *data, uint16_t len);
st75256_ret_t (*reset_cb)(void *handle);
st75256_ret_t (*delay_cb)(void *handle, uint32_t usec);
} st75256_cb_t;
typedef struct {
void *user_data;
st75256_cb_t cb;
st75256_mode_t mode;
} st75256_t;
#define ST75256_ERROR_CHECK(x) if(x != ST75256_OK) return ST75256_OK
st75256_ret_t st75256_init(st75256_t *lcd);
st75256_ret_t st75256_set_contrast(st75256_t *lcd, uint16_t contrast);
st75256_ret_t st75256_set_mode(st75256_t *lcd, st75256_mode_t mode);
#endif

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lvgl_impl.c Normal file
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#include <stdio.h>
#include "st75256_lcd.h"
#include "st75256_impl.h"
#include "user_tasks.h"
st75256_t g_lcd = {
.user_data = NULL,
.cb = {
.write_cmd_cb = _lcd_impl_write_cmd,
.write_data_cb = _lcd_impl_write_data,
.reset_cb = _lcd_impl_reset,
.delay_cb = _lcd_impl_delay
}
};
int main() {
g_lcd.user_data = _lcd_impl_init();
if(g_lcd.user_data == NULL) return -1;
st75256_init(&g_lcd);
st75256_set_contrast(&g_lcd, 305);
st75256_set_mode(&g_lcd, ST75256_GREY);
user_tasks_init();
user_tasks_loop();
user_tasks_deinit();
printf("Hello World!!\n");
return 0;
}

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#include "st75256_impl.h"
_st75256_impl_t *_lcd_impl_init(void) {
int spi_fd = open(CONFIG_SPIDEV_FILENAME, O_RDWR);
if(spi_fd < 0) return NULL;
uint32_t spi_mode = 0; // Nothing to be set in default mode.
int ret = ioctl(spi_fd, SPI_IOC_WR_MODE32, &spi_mode);
if(ret == -1) goto spi_err_out;
ret = ioctl(spi_fd, SPI_IOC_RD_MODE32, &spi_mode);
if(ret == -1) goto spi_err_out;
uint32_t spi_word_len = 8;
ret= ioctl(spi_fd, SPI_IOC_WR_BITS_PER_WORD, &spi_word_len);
if(ret == -1) goto spi_err_out;
ret = ioctl(spi_fd, SPI_IOC_RD_BITS_PER_WORD, &spi_word_len);
if(ret == -1) goto spi_err_out;
uint32_t spi_speed = 10000000; // 10MHz
ret = ioctl(spi_fd, SPI_IOC_WR_MAX_SPEED_HZ, &spi_speed);
if(ret == -1) goto spi_err_out;
ret = ioctl(spi_fd, SPI_IOC_RD_MAX_SPEED_HZ, &spi_speed);
if(ret == -1) goto spi_err_out;
_st75256_impl_t *impl = malloc(sizeof(_st75256_impl_t));
if(impl == NULL) goto spi_err_out;
impl->spi_fd = spi_fd;
impl->gpio_chip = gpiod_chip_open(CONFIG_GPIO_CHIP);
if(impl->gpio_chip == NULL) goto impl_err_out;
impl->gpio_line_res = gpiod_chip_get_line(impl->gpio_chip, CONFIG_RES_PIN);
if(impl->gpio_line_res == NULL) goto gpiod_err_out;
impl->gpio_line_dc = gpiod_chip_get_line(impl->gpio_chip, CONFIG_DC_PIN);
if(impl->gpio_line_dc == NULL) goto gpiod_err_out;
ret = gpiod_line_request_output(impl->gpio_line_dc, CONFIG_GPIO_CONSUMER, 1);
if(ret != 0) goto gpiod_err_out;
ret = gpiod_line_request_output(impl->gpio_line_res, CONFIG_GPIO_CONSUMER, 1);
if(ret != 0) goto gpiod_err_out;
return impl;
gpiod_err_out:
gpiod_chip_close(impl->gpio_chip);
impl_err_out:
free(impl);
spi_err_out:
close(spi_fd);
return NULL;
}
int _lcd_impl_deinit(_st75256_impl_t *handle) {
close(handle->spi_fd);
gpiod_chip_close(handle->gpio_chip);
free(handle);
return 0;
}
st75256_ret_t _lcd_impl_write_cmd(void *handle, uint8_t *cmd, uint8_t len) {
_st75256_impl_t *impl = handle;
int ret = gpiod_line_set_value(impl->gpio_line_dc, 0);
if(ret) return ST75256_ERROR;
struct spi_ioc_transfer cmd_tr = {
.tx_buf = (unsigned long)cmd,
.rx_buf = (unsigned long)NULL,
.len = 1,
.bits_per_word = 8
};
ret = ioctl(impl->spi_fd, SPI_IOC_MESSAGE(1), &cmd_tr);
if(ret < 1) return ST75256_ERROR;
if(len > 1) {
ret = gpiod_line_set_value(impl->gpio_line_dc, 1); // Set DC pin
if(ret) return ST75256_ERROR;
cmd_tr.tx_buf = (unsigned long)&cmd[1]; //2nd transfer
cmd_tr.len = len - 1;
ret = ioctl(impl->spi_fd, SPI_IOC_MESSAGE(1), &cmd_tr);
if(ret < len - 1) return ST75256_ERROR;
}
return ST75256_OK;
}
st75256_ret_t _lcd_impl_write_data(void *handle, uint8_t *data, uint16_t len) {
_st75256_impl_t *impl = handle;
int ret = gpiod_line_set_value(impl->gpio_line_dc, 1);
struct spi_ioc_transfer data_tr = {
.tx_buf = (unsigned long)data,
.rx_buf = (unsigned long)NULL,
.len = len,
.bits_per_word = 8
};
ret = ioctl(impl->spi_fd, SPI_IOC_MESSAGE(1), &data_tr);
if(ret < len) return ST75256_ERROR;
return ST75256_OK;
}
st75256_ret_t _lcd_impl_reset(void *handle) {
_st75256_impl_t *impl = handle;
usleep(10 * 1000);
int ret = gpiod_line_set_value(impl->gpio_line_res, 0);
if(ret) return ST75256_ERROR;
usleep(10 * 1000);
ret = gpiod_line_set_value(impl->gpio_line_res, 1);
if(ret) return ST75256_ERROR;
usleep(10 * 1000);
return ST75256_OK;
}
st75256_ret_t _lcd_impl_delay(void *handle, uint32_t usec) {
usleep(usec);
return ST75256_OK;
}

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#include <stdint.h>
#include <unistd.h>
#include "lvgl.h"
#include "user_tasks.h"
extern uint8_t g_running;
pthread_mutex_t g_lvgl_mutex = PTHREAD_MUTEX_INITIALIZER;
int lvgl_task_init(void) {
int ret;
lv_init();
ret = pthread_create(&lvgl_tick_thread_handle, NULL, lvgl_tick_thread, NULL);
if(ret) return ret;
ret = pthread_create(&lvgl_task_thread_handle, NULL, lvgl_task_thread, NULL);
if(ret) return ret;
ret = pthread_setname_np(lvgl_task_thread_handle, "LV_TASK");
ret = pthread_setname_np(lvgl_tick_thread_handle, "LV_TICK");
}
int lvgl_task_deinit(void) {
pthread_join(lvgl_task_thread_handle, NULL);
pthread_join(lvgl_tick_thread_handle, NULL);
}
pthread_t lvgl_tick_thread_handle;
void *lvgl_tick_thread(void *arguments) {
while(g_running) {
usleep(30 * 1000);
pthread_mutex_lock(&g_lvgl_mutex);
lv_tick_inc(30);
pthread_mutex_unlock(&g_lvgl_mutex);
}
}
pthread_t lvgl_task_thread_handle;
void *lvgl_task_thread(void *arguments) {
while(g_running) {
usleep(10 * 1000);
pthread_mutex_lock(&g_lvgl_mutex);
lv_task_handler();
pthread_mutex_unlock(&g_lvgl_mutex);
}
}

32
user_tasks.c Normal file
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#include <stdint.h>
#include <signal.h>
#include <unistd.h>
#include "user_tasks.h"
uint8_t g_running = 1;
void _user_signal_handler(int signo) {
if(signo == SIGINT) {
g_running = 0;
}
}
void user_tasks_init(void) {
if(signal(SIGINT, _user_signal_handler) == SIG_ERR) {
return;
}
lvgl_task_init();
}
void user_tasks_loop(void) {
while(g_running) {
sleep(1);
}
}
void user_tasks_deinit(void) {
lvgl_task_deinit();
}