临沂企业网站,wordpress主题宽度修改,网站建设论文的摘要,xp做网站服务器移植前准备
移植好fbtft屏幕驱动 参考链接#xff1a;友善之臂NanoPi NEO利用fbtft驱动点亮1.69寸ST7789V2屏幕
获取源码
名称地址描述lvglhttps://github.com/lvgl/lvgl.gitlvgl-8.3.5lv_drivershttps://github.com/lvgl/lv_drivers.gitlv_drivers-6.1.1
创建工程目录
创…移植前准备
移植好fbtft屏幕驱动 参考链接友善之臂NanoPi NEO利用fbtft驱动点亮1.69寸ST7789V2屏幕
获取源码
名称地址描述lvglhttps://github.com/lvgl/lvgl.gitlvgl-8.3.5lv_drivershttps://github.com/lvgl/lv_drivers.gitlv_drivers-6.1.1
创建工程目录
创建工程目录
mkdir lvgl_display下载的源码解压到该文件夹将文件夹名称中的版本号去掉
mv lvgl-8.3.5 lvgl
mv lv_drivers-6.1.1 lv_drivers将头文件复制到工程目录下,去掉名称中的template
lvgl_display/lvgl/lv_conf_template.h lvgl_display/lv_conf.h
lvgl_display/lv_drivers/lv_drv_conf_template.h lvgl_display/lv_drv_conf.h工程目录下创建main.c,Makefile,创建文件夹build工程目录文件如下
名称描述main.c测试程序Makefile编译脚本lv_conf.hlvgl配置文件lv_drv_conf.hlvgl驱动配置文件lvgllvgl8.3.5源码lv_driverslvgl驱动源码build编译过程文件 ls
rwxrwxr-x 2 pi pi 16384 8月 13 11:22 build/
-rw-rw-r-- 1 pi pi 26339 8月 13 11:16 lv_conf.h
drwxrwxr-x 6 pi pi 4096 1月 4 2020 lv_drivers/
-rw-rw-r-- 1 pi pi 11196 8月 13 09:19 lv_drv_conf.h
drwxrwxr-x 10 pi pi 4096 2月 7 2023 lvgl/
-rw-rw-r-- 1 pi pi 2401 8月 13 11:22 main.c
-rw-rw-r-- 1 pi pi 1956 8月 13 11:05 Makefile修改配置文件lv_drv_conf.h
将#if 0修改为#if 1
/*** file lv_drv_conf.h**//** COPY THIS FILE AS lv_drv_conf.h*/#if 1 /*Set it to 1 to enable the content*/#ifndef LV_DRV_CONF_H
#define LV_DRV_CONF_H#include lv_conf.h
将宏USE_FBDEV的值改为1使能frame buffer设备
/*-----------------------------------------* Linux frame buffer device (/dev/fbx)*-----------------------------------------*/
#ifndef USE_FBDEV
# define USE_FBDEV 1
#endif#if USE_FBDEV
# define FBDEV_PATH /dev/fb0
#endif 修改lv_conf.h
将文件最开始的#if 0改为#if 1
/* clang-format off */
#if 1 /*Set it to 1 to enable content*/#ifndef LV_CONF_H
#define LV_CONF_H#include stdint.h
使能宏LV_MEM_CUSTOM为1
/*MEMORY SETTINGS**//*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 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*/
最后是比较关键的一个设置TICK的配置我们选择自己定义一个Tick定时器配置函数在自己的应用程序中实现,源码用#if 0屏蔽
#if 0 //原始代码
/*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*//*If using lvgl as ESP32 component*/// #define LV_TICK_CUSTOM_INCLUDE esp_timer.h// #define LV_TICK_CUSTOM_SYS_TIME_EXPR ((esp_timer_get_time() / 1000LL))
#endif /*LV_TICK_CUSTOM*/#else //新代码
/*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 1
#if LV_TICK_CUSTOM#define LV_TICK_CUSTOM_INCLUDE stdint.h /*Header for the system time function*/#define LV_TICK_CUSTOM_SYS_TIME_EXPR (custom_tick_get()) /*Expression evaluating to current system time in ms*/
#endif /*LV_TICK_CUSTOM*/
#endif
使能music例程
#define LV_FONT_MONTSERRAT_12 1
#define LV_FONT_MONTSERRAT_14 1
#define LV_FONT_MONTSERRAT_16 1/*Music player demo*/
#define LV_USE_DEMO_MUSIC 1修改lv_drivers/display/fbdev.c
不修改可能导致系统崩溃
screensize finfo.line_length * vinfo.yres; main.c内容
#include lvgl/lvgl.h
//#include lvgl/demos/lv_demos.h //未使用 屏蔽
#include lv_drivers/display/fbdev.h
#include lv_drivers/indev/evdev.h
#include unistd.h
#include pthread.h
#include time.h
#include sys/time.h#define DISP_BUF_SIZE (128 * 1024)int main(void)
{/*LittlevGL init*/lv_init();/*Linux frame buffer device init*/fbdev_init();/*A small buffer for LittlevGL to draw the screens content*/static lv_color_t buf[DISP_BUF_SIZE];/*Initialize a descriptor for the buffer*/static lv_disp_draw_buf_t disp_buf;lv_disp_draw_buf_init(disp_buf, buf, NULL, DISP_BUF_SIZE);/*Initialize and register a display driver*/static lv_disp_drv_t disp_drv;lv_disp_drv_init(disp_drv);disp_drv.draw_buf disp_buf;disp_drv.flush_cb fbdev_flush;//修改分辨率disp_drv.hor_res 280;disp_drv.ver_res 240;lv_disp_drv_register(disp_drv);
#if 0 //未使用输入设备evdev_init();static lv_indev_drv_t indev_drv_1;lv_indev_drv_init(indev_drv_1); /*Basic initialization*/indev_drv_1.type LV_INDEV_TYPE_POINTER;/*This function will be called periodically (by the library) to get the mouse position and state*/indev_drv_1.read_cb evdev_read;lv_indev_t *mouse_indev lv_indev_drv_register(indev_drv_1);/*Set a cursor for the mouse*/LV_IMG_DECLARE(mouse_cursor_icon)lv_obj_t * cursor_obj lv_img_create(lv_scr_act()); /*Create an image object for the cursor */lv_img_set_src(cursor_obj, mouse_cursor_icon); /*Set the image source*/lv_indev_set_cursor(mouse_indev, cursor_obj); /*Connect the image object to the driver*/
#endif/*Create a Demo*/lv_demo_music();/*Handle LitlevGL tasks (tickless mode)*/while(1) {lv_timer_handler();usleep(5000);}return 0;
}/*Set in lv_conf.h as LV_TICK_CUSTOM_SYS_TIME_EXPR*/
uint32_t custom_tick_get(void)
{static uint64_t start_ms 0;if(start_ms 0) {struct timeval tv_start;gettimeofday(tv_start, NULL);start_ms (tv_start.tv_sec * 1000000 tv_start.tv_usec) / 1000;}struct timeval tv_now;gettimeofday(tv_now, NULL);uint64_t now_ms;now_ms (tv_now.tv_sec * 1000000 tv_now.tv_usec) / 1000;uint32_t time_ms now_ms - start_ms;return time_ms;
} Makefile
#
# Makefile
#
CC ? gcc
LVGL_DIR_NAME ? lvgl
LVGL_DIR ? ${shell pwd}
CFLAGS ? -O3 -g0 -I$(LVGL_DIR)/ -Wall -Wshadow -Wundef -Wmissing-prototypes -Wno-discarded-qualifiers -Wall -Wextra -Wno-unused-function -Wno-errorstrict-prototypes -Wpointer-arith -fno-strict-aliasing -Wno-errorcpp -Wuninitialized -Wmaybe-uninitialized -Wno-unused-parameter -Wno-missing-field-initializers -Wtype-limits -Wsizeof-pointer-memaccess -Wno-format-nonliteral -Wno-cast-qual -Wunreachable-code -Wno-switch-default -Wreturn-type -Wmultichar -Wformat-security -Wno-ignored-qualifiers -Wno-errorpedantic -Wno-sign-compare -Wno-errormissing-prototypes -Wdouble-promotion -Wclobbered -Wdeprecated -Wempty-body -Wtype-limits -Wshift-negative-value -Wstack-usage2048 -Wno-unused-value -Wno-unused-parameter -Wno-missing-field-initializers -Wuninitialized -Wmaybe-uninitialized -Wall -Wextra -Wno-unused-parameter -Wno-missing-field-initializers -Wtype-limits -Wsizeof-pointer-memaccess -Wno-format-nonliteral -Wpointer-arith -Wno-cast-qual -Wmissing-prototypes -Wunreachable-code -Wno-switch-default -Wreturn-type -Wmultichar -Wno-discarded-qualifiers -Wformat-security -Wno-ignored-qualifiers -Wno-sign-compare -stdc99
LDFLAGS ? -lm
BIN demo#Collect the files to compile
MAINSRC ./main.cinclude $(LVGL_DIR)/lvgl/lvgl.mk
include $(LVGL_DIR)/lv_drivers/lv_drivers.mk
OBJ_DIR : $(LVGL_DIR)/build
#CSRCS $(LVGL_DIR)/my_ui/main.c
##################################### 收集需要编译的源文件 #####################################
CSRCS $(LVGL_DIR)/main.c
##################################### 将文件名替换为.o文件 #####################################CXX_OBJCTS $(patsubst %.c, $(OBJ_DIR)/%.o, $(notdir $(CSRCS)))SOURSE_DIR $(dir $(CSRCS))vpath %.c $(SOURSE_DIR)$(OBJ_DIR)/%.o: %.c$(CC) $(CFLAGS) -c $ -o $echo CC $all: $(CXX_OBJCTS)$(CC) -o $(BIN) $(CXX_OBJCTS) $(LDFLAGS)
clean: rm -f $(BIN) $(CXX_OBJCTS)
效果展示
