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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Minios-devel] [UNIKRAFT/APPLVGL-DEMO PATCH v2 1/1] apps/lvgl-demo: Unikraft LVGL baremetal demo running on a Raspberry Pi 3B+
Unikraft LVGL baremetal demo running on a Raspberry Pi 3B+. Signed-off-by: Santiago Pagani <santiagopagani@xxxxxxxxx> --- Config.uk | 11 ++ Makefile | 10 ++ Makefile.uk | 6 + README.md | 24 +++- lv_example.c | 332 +++++++++++++++++++++++++++++++++++++++++++++++++++ main.c | 89 ++++++++++++++ 6 files changed, 471 insertions(+), 1 deletion(-) create mode 100644 Config.uk create mode 100644 Makefile create mode 100644 Makefile.uk create mode 100644 lv_example.c create mode 100644 main.c diff --git a/Config.uk b/Config.uk new file mode 100644 index 0000000..8e29483 --- /dev/null +++ b/Config.uk @@ -0,0 +1,11 @@ +### Invisible option for dependencies +config APPLVGL_RASPI_DEMO_DEPENDENCIES + bool + default y + +### App configuration +config APPLVGL_RASPI_DEMO_PRINTARGS + bool "Print arguments" + default y + help + Prints argument list (argv) to stdout diff --git a/Makefile b/Makefile new file mode 100644 index 0000000..c0060c9 --- /dev/null +++ b/Makefile @@ -0,0 +1,10 @@ +UK_ROOT ?= $(PWD)/../../unikraft +UK_LIBS ?= $(PWD)/../../libs +UK_PLAT ?= $(PWD)/../../plats/raspi +LIBS := $(UK_LIBS)/lvgl:$(UK_LIBS)/newlib + +all: + @$(MAKE) -C $(UK_ROOT) A=$(PWD) P=$(UK_PLAT) L=$(LIBS) + +$(MAKECMDGOALS): + @$(MAKE) -C $(UK_ROOT) A=$(PWD) P=$(UK_PLAT) L=$(LIBS) $(MAKECMDGOALS) diff --git a/Makefile.uk b/Makefile.uk new file mode 100644 index 0000000..73b9adf --- /dev/null +++ b/Makefile.uk @@ -0,0 +1,6 @@ +$(eval $(call addlib,applvgl_raspi_demo)) + +APPLVGL_RASPI_DEMO_CINCLUDES-y += -I$(LIBRASPIPLAT_BASE)/include + +APPLVGL_RASPI_DEMO_SRCS-y += $(APPLVGL_RASPI_DEMO_BASE)/main.c +APPLVGL_RASPI_DEMO_SRCS-y += $(APPLVGL_RASPI_DEMO_BASE)/lv_example.c diff --git a/README.md b/README.md index b5637ba..ea09f43 100644 --- a/README.md +++ b/README.md @@ -1,3 +1,25 @@ # lvgl-demo -Unikraft LVGL baremetal demo running in Raspberry Pi 3B+ \ No newline at end of file +Unikraft LVGL baremetal demo running on a Raspberry Pi 3B+ + +This is a demo for running the LittleVGL library with the example GUI from https://littlevgl.com/demo-theme-night. + +Please select/deselect the following options in the make menuconfig: +- Architecture Selection --> Architecture --> select: Arrmv8 compatible (64 bits) +- Architecture Selection --> Processor Optimization --> select: Generic Armv8 Cortex A53 +- Architecture Selection --> deselect: Workaround for Cortex-A73 erratum +- Platform Configuration --> select: Raspberry Pi 3B+ +- Platform Configuration --> Raspberry Pi 3B+ --> Devices --> select: DSI LCD screen +- Platform Configuration --> Raspberry Pi 3B+ --> Devices --> select: Touch screen +- Library Configuration --> ukboot --> deselect: Show Unikraft banner (this is to minimize boot time) +- Library Configuration --> select: lvgl +- Build Options --> select: Drop unused functions and data + +Once built, in a blank SD card formated to FAT32, copy the generated kernel8.img Unikraft image (without changing +the name of the image file, as otherwise the Raspberry Pi's bootloader will not recongize it), plus the four files +that are inside the plats/raspi/bootfiles folder (i.e., bootcode.bin, config.txt, fixup.dat, and start.elf). + +#TODO: We still need to find an elegant way to have an lv_conf.h file in the application folder that overrides the +lv_conf.h file in the lvgl ported library. Until then, to change the font size, we can set to 1 the LV_FONT_ROBOTO_xx +of the size that we want to use (and the rest to 0) and then set LV_FONT_DEFAULT to &lv_font_roboto_xx that same size. +For example, for this particular demo, font size 16 is what looks best in the 7" LCD screen. diff --git a/lv_example.c b/lv_example.c new file mode 100644 index 0000000..ca5dc56 --- /dev/null +++ b/lv_example.c @@ -0,0 +1,332 @@ +/** + * File from https://github.com/littlevgl/lv_examples/blob/master/lv_tests/lv_test_theme/lv_test_theme_1.c + */ + +#define LV_CONF_INCLUDE_SIMPLE +#include <lvgl.h> + +/********************* + * DEFINES + *********************/ + +/********************** + * TYPEDEFS + **********************/ + +/********************** + * STATIC PROTOTYPES + **********************/ +static void create_tab1(lv_obj_t * parent); +static void create_tab2(lv_obj_t * parent); +static void create_tab3(lv_obj_t * parent); + +/********************** + * STATIC VARIABLES + **********************/ + +/********************** + * MACROS + **********************/ + +/********************** + * GLOBAL FUNCTIONS + **********************/ + +/** + * Create a test screen with a lot objects and apply the given theme on them + * @param th pointer to a theme + */ +void lv_example_create(lv_theme_t * th) +{ + lv_theme_set_current(th); + th = lv_theme_get_current(); /*If `LV_THEME_LIVE_UPDATE 1` `th` is not used directly so get the real theme after set*/ + lv_obj_t * scr = lv_cont_create(NULL, NULL); + lv_disp_load_scr(scr); + + lv_obj_t * tv = lv_tabview_create(scr, NULL); + lv_obj_set_size(tv, lv_disp_get_hor_res(NULL), lv_disp_get_ver_res(NULL)); + lv_obj_t * tab1 = lv_tabview_add_tab(tv, "Tab 1"); + lv_obj_t * tab2 = lv_tabview_add_tab(tv, "Tab 2"); + lv_obj_t * tab3 = lv_tabview_add_tab(tv, "Tab 3"); + + create_tab1(tab1); + create_tab2(tab2); + create_tab3(tab3); +} + +/********************** + * STATIC FUNCTIONS + **********************/ +static void create_tab1(lv_obj_t * parent) +{ + lv_page_set_scrl_layout(parent, LV_LAYOUT_PRETTY); + + lv_theme_t * th = lv_theme_get_current(); + + static lv_style_t h_style; + lv_style_copy(&h_style, &lv_style_transp); + h_style.body.padding.inner = LV_DPI / 10; + h_style.body.padding.left = LV_DPI / 4; + h_style.body.padding.right = LV_DPI / 4; + h_style.body.padding.top = LV_DPI / 10; + h_style.body.padding.bottom = LV_DPI / 10; + + lv_obj_t * h = lv_cont_create(parent, NULL); + lv_obj_set_style(h, &h_style); + lv_obj_set_click(h, false); + lv_cont_set_fit(h, LV_FIT_TIGHT); + lv_cont_set_layout(h, LV_LAYOUT_COL_M); + + lv_obj_t * btn = lv_btn_create(h, NULL); + lv_btn_set_fit(btn, LV_FIT_TIGHT); + lv_btn_set_toggle(btn, true); + lv_obj_t * btn_label = lv_label_create(btn, NULL); + lv_label_set_text(btn_label, "Button"); + + btn = lv_btn_create(h, btn); + lv_btn_toggle(btn); + btn_label = lv_label_create(btn, NULL); + lv_label_set_text(btn_label, "Toggled"); + + btn = lv_btn_create(h, btn); + lv_btn_set_state(btn, LV_BTN_STATE_INA); + btn_label = lv_label_create(btn, NULL); + lv_label_set_text(btn_label, "Inactive"); + + lv_obj_t * label = lv_label_create(h, NULL); + lv_label_set_text(label, "Primary"); + lv_obj_set_style(label, th->style.label.prim); + + label = lv_label_create(h, NULL); + lv_label_set_text(label, "Secondary"); + lv_obj_set_style(label, th->style.label.sec); + + label = lv_label_create(h, NULL); + lv_label_set_text(label, "Hint"); + lv_obj_set_style(label, th->style.label.hint); + + static const char * btnm_str[] = {"1", "2", "3", LV_SYMBOL_OK, LV_SYMBOL_CLOSE, ""}; + lv_obj_t * btnm = lv_btnm_create(h, NULL); + lv_obj_set_size(btnm, lv_disp_get_hor_res(NULL) / 4, 2 * LV_DPI / 3); + lv_btnm_set_map(btnm, btnm_str); + lv_btnm_set_btn_ctrl_all(btnm, LV_BTNM_CTRL_TGL_ENABLE); + lv_btnm_set_one_toggle(btnm, true); + + lv_obj_t * table = lv_table_create(h, NULL); + lv_table_set_col_cnt(table, 3); + lv_table_set_row_cnt(table, 4); + lv_table_set_col_width(table, 0, LV_DPI / 3); + lv_table_set_col_width(table, 1, LV_DPI / 2); + lv_table_set_col_width(table, 2, LV_DPI / 2); + lv_table_set_cell_merge_right(table, 0, 0, true); + lv_table_set_cell_merge_right(table, 0, 1, true); + + lv_table_set_cell_value(table, 0, 0, "Table"); + lv_table_set_cell_align(table, 0, 0, LV_LABEL_ALIGN_CENTER); + + lv_table_set_cell_value(table, 1, 0, "1"); + lv_table_set_cell_value(table, 1, 1, "13"); + lv_table_set_cell_align(table, 1, 1, LV_LABEL_ALIGN_RIGHT); + lv_table_set_cell_value(table, 1, 2, "ms"); + + lv_table_set_cell_value(table, 2, 0, "2"); + lv_table_set_cell_value(table, 2, 1, "46"); + lv_table_set_cell_align(table, 2, 1, LV_LABEL_ALIGN_RIGHT); + lv_table_set_cell_value(table, 2, 2, "ms"); + + lv_table_set_cell_value(table, 3, 0, "3"); + lv_table_set_cell_value(table, 3, 1, "61"); + lv_table_set_cell_align(table, 3, 1, LV_LABEL_ALIGN_RIGHT); + lv_table_set_cell_value(table, 3, 2, "ms"); + + h = lv_cont_create(parent, h); + + lv_obj_t * sw_h = lv_cont_create(h, NULL); + lv_cont_set_style(sw_h, LV_CONT_STYLE_MAIN, &lv_style_transp); + lv_cont_set_fit2(sw_h, LV_FIT_NONE, LV_FIT_TIGHT); + lv_obj_set_width(sw_h, LV_HOR_RES / 4); + lv_cont_set_layout(sw_h, LV_LAYOUT_PRETTY); + + lv_obj_t * sw = lv_sw_create(sw_h, NULL); + lv_sw_set_anim_time(sw, 250); + + sw = lv_sw_create(sw_h, sw); + lv_sw_on(sw, LV_ANIM_OFF); + + + lv_obj_t * bar = lv_bar_create(h, NULL); + lv_bar_set_value(bar, 70, false); + + lv_obj_t * slider = lv_slider_create(h, NULL); + lv_bar_set_value(slider, 70, false); + + lv_obj_t * line = lv_line_create(h, NULL); + static lv_point_t line_p[2]; + line_p[0].x = 0; + line_p[0].y = 0; + line_p[1].x = lv_disp_get_hor_res(NULL) / 5; + line_p[1].y = 0; + + lv_line_set_points(line, line_p, 2); + lv_line_set_style(line, LV_LINE_STYLE_MAIN, th->style.line.decor); + + lv_obj_t * cb = lv_cb_create(h, NULL); + + cb = lv_cb_create(h, cb); + lv_btn_set_state(cb, LV_BTN_STATE_TGL_REL); + + lv_obj_t * ddlist = lv_ddlist_create(h, NULL); + lv_ddlist_set_fix_width(ddlist, lv_obj_get_width(ddlist) + LV_DPI / 2); /*Make space for the arrow*/ + lv_ddlist_set_draw_arrow(ddlist, true); + + h = lv_cont_create(parent, h); + + lv_obj_t * list = lv_list_create(h, NULL); + lv_obj_set_size(list, lv_disp_get_hor_res(NULL) / 4, lv_disp_get_ver_res(NULL) / 2); + lv_obj_t * list_btn; + list_btn = lv_list_add_btn(list, LV_SYMBOL_GPS, "GPS"); + lv_btn_set_toggle(list_btn, true); + + lv_list_add_btn(list, LV_SYMBOL_WIFI, "WiFi"); + lv_list_add_btn(list, LV_SYMBOL_GPS, "GPS"); + lv_list_add_btn(list, LV_SYMBOL_AUDIO, "Audio"); + lv_list_add_btn(list, LV_SYMBOL_VIDEO, "Video"); + lv_list_add_btn(list, LV_SYMBOL_CALL, "Call"); + lv_list_add_btn(list, LV_SYMBOL_BELL, "Bell"); + lv_list_add_btn(list, LV_SYMBOL_FILE, "File"); + lv_list_add_btn(list, LV_SYMBOL_EDIT, "Edit"); + lv_list_add_btn(list, LV_SYMBOL_CUT, "Cut"); + lv_list_add_btn(list, LV_SYMBOL_COPY, "Copy"); + + lv_obj_t * roller = lv_roller_create(h, NULL); + lv_roller_set_options(roller, "Monday\nTuesday\nWednesday\nThursday\nFriday\nSaturday\nSunday", true); + lv_roller_set_selected(roller, 1, false); + lv_roller_set_visible_row_count(roller, 3); + + +} + +static void create_tab2(lv_obj_t * parent) +{ + lv_coord_t w = lv_page_get_scrl_width(parent); + + lv_obj_t * chart = lv_chart_create(parent, NULL); + lv_chart_set_type(chart, LV_CHART_TYPE_AREA); + lv_obj_set_size(chart, w / 3, lv_disp_get_ver_res(NULL) / 3); + lv_obj_set_pos(chart, LV_DPI / 10, LV_DPI / 10); + lv_chart_series_t * s1 = lv_chart_add_series(chart, LV_COLOR_RED); + lv_chart_set_next(chart, s1, 30); + lv_chart_set_next(chart, s1, 20); + lv_chart_set_next(chart, s1, 10); + lv_chart_set_next(chart, s1, 12); + lv_chart_set_next(chart, s1, 20); + lv_chart_set_next(chart, s1, 27); + lv_chart_set_next(chart, s1, 35); + lv_chart_set_next(chart, s1, 55); + lv_chart_set_next(chart, s1, 70); + lv_chart_set_next(chart, s1, 75); + + + lv_obj_t * gauge = lv_gauge_create(parent, NULL); + lv_gauge_set_value(gauge, 0, 40); + lv_obj_set_size(gauge, w / 4, w / 4); + lv_obj_align(gauge, chart, LV_ALIGN_OUT_BOTTOM_LEFT, 0, LV_DPI / 4); + + + lv_obj_t * arc = lv_arc_create(parent, NULL); + lv_obj_align(arc, gauge, LV_ALIGN_OUT_BOTTOM_MID, 0, LV_DPI / 8); + + lv_obj_t * ta = lv_ta_create(parent, NULL); + lv_obj_set_size(ta, w / 3, lv_disp_get_ver_res(NULL) / 4); + lv_obj_align(ta, NULL, LV_ALIGN_IN_TOP_RIGHT, -LV_DPI / 10, LV_DPI / 10); + lv_ta_set_cursor_type(ta, LV_CURSOR_BLOCK); + + lv_obj_t * kb = lv_kb_create(parent, NULL); + lv_obj_set_size(kb, 2 * w / 3, lv_disp_get_ver_res(NULL) / 3); + lv_obj_align(kb, ta, LV_ALIGN_OUT_BOTTOM_RIGHT, 0, LV_DPI); + lv_kb_set_ta(kb, ta); + +#if LV_USE_ANIMATION + lv_obj_t * loader = lv_preload_create(parent, NULL); + lv_obj_align(loader, NULL, LV_ALIGN_CENTER, 0, - LV_DPI); +#endif +} + + +static void create_tab3(lv_obj_t * parent) +{ + /*Create a Window*/ + lv_obj_t * win = lv_win_create(parent, NULL); + lv_obj_t * win_btn = lv_win_add_btn(win, LV_SYMBOL_CLOSE); + lv_obj_set_event_cb(win_btn, lv_win_close_event_cb); + lv_win_add_btn(win, LV_SYMBOL_DOWN); + lv_obj_set_size(win, lv_disp_get_hor_res(NULL) / 2, lv_disp_get_ver_res(NULL) / 2); + lv_obj_set_pos(win, LV_DPI / 20, LV_DPI / 20); + lv_obj_set_top(win, true); + + + /*Create a Label in the Window*/ + lv_obj_t * label = lv_label_create(win, NULL); + lv_label_set_text(label, "Label in the window"); + + /*Create a Line meter in the Window*/ + lv_obj_t * lmeter = lv_lmeter_create(win, NULL); + lv_obj_align(lmeter, label, LV_ALIGN_OUT_BOTTOM_LEFT, 0, LV_DPI / 2); + lv_lmeter_set_value(lmeter, 70); + + /*Create a 2 LEDs in the Window*/ + lv_obj_t * led1 = lv_led_create(win, NULL); + lv_obj_align(led1, lmeter, LV_ALIGN_OUT_RIGHT_MID, LV_DPI / 2, 0); + lv_led_on(led1); + + lv_obj_t * led2 = lv_led_create(win, NULL); + lv_obj_align(led2, led1, LV_ALIGN_OUT_RIGHT_MID, LV_DPI / 2, 0); + lv_led_off(led2); + + /*Create a Page*/ + lv_obj_t * page = lv_page_create(parent, NULL); + lv_obj_set_size(page, lv_disp_get_hor_res(NULL) / 3, lv_disp_get_ver_res(NULL) / 2); + lv_obj_set_top(page, true); + lv_obj_align(page, win, LV_ALIGN_IN_TOP_RIGHT, LV_DPI, LV_DPI); + + label = lv_label_create(page, NULL); + lv_label_set_text(label, "Lorem ipsum dolor sit amet, repudiare voluptatibus pri cu.\n" + "Ei mundi pertinax posidonium eum, cum tempor maiorum at,\n" + "mea fuisset assentior ad. Usu cu suas civibus iudicabit.\n" + "Eum eu congue tempor facilisi. Tale hinc unum te vim.\n" + "Te cum populo animal eruditi, labitur inciderint at nec.\n\n" + "Eius corpora et quo. Everti voluptaria instructior est id,\n" + "vel in falli primis. Mea ei porro essent admodum,\n" + "his ei malis quodsi, te quis aeterno his.\n" + "Qui tritani recusabo reprehendunt ne,\n" + "per duis explicari at. Simul mediocritatem mei et."); + + /*Create a Calendar*/ + lv_obj_t * cal = lv_calendar_create(parent, NULL); + lv_obj_set_size(cal, 5 * LV_DPI / 2, 5 * LV_DPI / 2); + lv_obj_align(cal, page, LV_ALIGN_OUT_RIGHT_TOP, -LV_DPI / 2, LV_DPI / 3); + lv_obj_set_top(cal, true); + + static lv_calendar_date_t highlighted_days[2]; + highlighted_days[0].day = 5; + highlighted_days[0].month = 5; + highlighted_days[0].year = 2018; + + highlighted_days[1].day = 8; + highlighted_days[1].month = 5; + highlighted_days[1].year = 2018; + + lv_calendar_set_highlighted_dates(cal, highlighted_days, 2); + lv_calendar_set_today_date(cal, &highlighted_days[0]); + lv_calendar_set_showed_date(cal, &highlighted_days[0]); + + /*Create a Message box*/ + static const char * mbox_btn_map[] = {" ", "Got it!", " ", ""}; + lv_obj_t * mbox = lv_mbox_create(parent, NULL); + lv_mbox_set_text(mbox, "Click on the window or the page to bring it to the foreground"); + lv_mbox_add_btns(mbox, mbox_btn_map); + lv_btnm_set_btn_ctrl(lv_mbox_get_btnm(mbox), 0, LV_BTNM_CTRL_HIDDEN); + lv_btnm_set_btn_width(lv_mbox_get_btnm(mbox), 1, 7); + lv_btnm_set_btn_ctrl(lv_mbox_get_btnm(mbox), 2, LV_BTNM_CTRL_HIDDEN); + lv_obj_set_top(mbox, true); +} diff --git a/main.c b/main.c new file mode 100644 index 0000000..0f0a180 --- /dev/null +++ b/main.c @@ -0,0 +1,89 @@ +/* SPDX-License-Identifier: BSD-3-Clause */ +/* + * Authors: Santiago Pagani <santiagopagani@xxxxxxxxx> + * + * Copyright (c) 2020, NEC Laboratories Europe GmbH, NEC Corporation. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the copyright holder nor the names of its + * contributors may be used to endorse or promote products derived from + * this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + * + * THIS HEADER MAY NOT BE EXTRACTED OR MODIFIED IN ANY WAY. + */ + +#include <uk/config.h> +#include <stdio.h> +#include <stdint.h> +#include <unistd.h> +#include <uk/print.h> +#include <uk/essentials.h> +#include <raspi/setup.h> +#include <raspi/time.h> +#include <raspi/raspi_info.h> + +#ifndef LV_CONF_INCLUDE_SIMPLE + #define LV_CONF_INCLUDE_SIMPLE +#endif +#include <lvgl.h> +void lv_example_create(lv_theme_t * th); +#define LVGL_REFRESH_SLEEP_TIME 5000 + + +int main(int argc __unused, char *argv[] __unused) +{ + uint64_t main_entry = get_system_timer(); + + // LittleVGL demo + lv_theme_t * th = lv_theme_night_init(20, NULL); + lv_theme_set_current(th); + lv_example_create(th); + + uint64_t little_vgl_done = get_system_timer(); + + printf("LittleLVGL demo on Raspberry Pi3\n"); + printf("Boot Time (absolute, CPU reset after power on): %lu us\n", _libraspiplat_get_reset_time()); + printf("Main entry (absolute, main entry after power on): %lu us\n", main_entry); + printf("LittleVGL draw (absolute, main entry after power on): %lu us\n", little_vgl_done); + printf("Main entry (since Boot Time): %lu us\n", main_entry - _libraspiplat_get_reset_time()); + printf("LittleVGL draw (since Boot Time): %lu us\n", little_vgl_done - _libraspiplat_get_reset_time()); + printf("Text Size: %lu\n", get_unikraft_text_size()); + printf("Data Size: %lu\n", get_unikraft_data_size()); + printf("BSS Size: %lu\n", get_unikraft_bss_size()); + + uint64_t old_time, current_time; + old_time = get_system_timer(); + + while(1) { + uint64_t elapsed_time = get_system_timer() - old_time; + if (elapsed_time < LVGL_REFRESH_SLEEP_TIME) + usleep(LVGL_REFRESH_SLEEP_TIME - elapsed_time); + current_time = get_system_timer(); + lv_tick_inc((current_time - old_time)/1000); + old_time = current_time; + lv_task_handler(); + } + + return 0; +} -- 2.17.1 _______________________________________________ Minios-devel mailing list Minios-devel@xxxxxxxxxxxxxxxxxxxx https://lists.xenproject.org/mailman/listinfo/minios-devel
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