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firmware: Attempt at working LVGL on LCD

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This commit is contained in:
Jack O'Sullivan
2024-12-03 22:55:46 +00:00
parent 4ac2bbba62
commit df62eb0fe6
7 changed files with 410 additions and 40 deletions
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5
firmware/main/CMakeLists.txt
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@@ -1,2 +1,3 @@
idf_component_register(SRCS "valconomy.c"
INCLUDE_DIRS ".")
idf_component_register(
SRCS "valconomy.c" "lvgl_demo_ui.c"
INCLUDE_DIRS ".")

17
firmware/main/idf_component.yml Normal file
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@@ -0,0 +1,17 @@
## IDF Component Manager Manifest File
dependencies:
lvgl/lvgl: "^9.2.2"
## Required IDF version
idf:
version: ">=4.1.0"
# # Put list of dependencies here
# # For components maintained by Espressif:
# component: "~1.0.0"
# # For 3rd party components:
# username/component: ">=1.0.0,<2.0.0"
# username2/component2:
# version: "~1.0.0"
# # For transient dependencies `public` flag can be set.
# # `public` flag doesn't have an effect dependencies of the `main` component.
# # All dependencies of `main` are public by default.
# public: true

150
firmware/main/lvgl_demo_ui.c Normal file
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@@ -0,0 +1,150 @@
#include "lvgl.h"
static lv_style_t style_bullet;
static lv_obj_t *scale1;
static const lv_font_t *font_normal = &lv_font_montserrat_14;
static lv_obj_t *create_scale_box(lv_obj_t *parent, const char *text1, const char *text2, const char *text3)
{
lv_obj_t *scale = lv_scale_create(parent);
lv_obj_center(scale);
lv_obj_set_size(scale, 300, 300);
lv_scale_set_mode(scale, LV_SCALE_MODE_ROUND_OUTER);
lv_scale_set_label_show(scale, false);
lv_scale_set_post_draw(scale, true);
lv_obj_set_width(scale, LV_PCT(100));
lv_obj_set_style_pad_all(scale, 30, 0);
lv_obj_t *bullet1 = lv_obj_create(parent);
lv_obj_set_size(bullet1, 13, 13);
lv_obj_remove_style(bullet1, NULL, LV_PART_SCROLLBAR);
lv_obj_add_style(bullet1, &style_bullet, 0);
lv_obj_set_style_bg_color(bullet1, lv_palette_main(LV_PALETTE_RED), 0);
lv_obj_t *label1 = lv_label_create(parent);
lv_label_set_text(label1, text1);
lv_obj_t *bullet2 = lv_obj_create(parent);
lv_obj_set_size(bullet2, 13, 13);
lv_obj_remove_style(bullet2, NULL, LV_PART_SCROLLBAR);
lv_obj_add_style(bullet2, &style_bullet, 0);
lv_obj_set_style_bg_color(bullet2, lv_palette_main(LV_PALETTE_BLUE), 0);
lv_obj_t *label2 = lv_label_create(parent);
lv_label_set_text(label2, text2);
lv_obj_t *bullet3 = lv_obj_create(parent);
lv_obj_set_size(bullet3, 13, 13);
lv_obj_remove_style(bullet3, NULL, LV_PART_SCROLLBAR);
lv_obj_add_style(bullet3, &style_bullet, 0);
lv_obj_set_style_bg_color(bullet3, lv_palette_main(LV_PALETTE_GREEN), 0);
lv_obj_t *label3 = lv_label_create(parent);
lv_label_set_text(label3, text3);
static int32_t grid_col_dsc[] = {LV_GRID_CONTENT, LV_GRID_FR(1), LV_GRID_TEMPLATE_LAST};
static int32_t grid_row_dsc[] = {LV_GRID_CONTENT, LV_GRID_CONTENT, LV_GRID_CONTENT, LV_GRID_CONTENT, LV_GRID_CONTENT, LV_GRID_TEMPLATE_LAST};
lv_obj_set_grid_dsc_array(parent, grid_col_dsc, grid_row_dsc);
lv_obj_set_grid_cell(scale, LV_GRID_ALIGN_START, 0, 2, LV_GRID_ALIGN_START, 1, 1);
lv_obj_set_grid_cell(bullet1, LV_GRID_ALIGN_START, 0, 1, LV_GRID_ALIGN_START, 2, 1);
lv_obj_set_grid_cell(bullet2, LV_GRID_ALIGN_START, 0, 1, LV_GRID_ALIGN_START, 3, 1);
lv_obj_set_grid_cell(bullet3, LV_GRID_ALIGN_START, 0, 1, LV_GRID_ALIGN_START, 4, 1);
lv_obj_set_grid_cell(label1, LV_GRID_ALIGN_STRETCH, 1, 1, LV_GRID_ALIGN_START, 2, 1);
lv_obj_set_grid_cell(label2, LV_GRID_ALIGN_STRETCH, 1, 1, LV_GRID_ALIGN_START, 3, 1);
lv_obj_set_grid_cell(label3, LV_GRID_ALIGN_STRETCH, 1, 1, LV_GRID_ALIGN_START, 4, 1);
return scale;
}
static void scale1_indic1_anim_cb(void *var, int32_t v)
{
lv_arc_set_value(var, v);
lv_obj_t *card = lv_obj_get_parent(scale1);
lv_obj_t *label = lv_obj_get_child(card, -5);
lv_label_set_text_fmt(label, "Revenue: %"LV_PRId32" %%", v);
}
static void scale1_indic2_anim_cb(void *var, int32_t v)
{
lv_arc_set_value(var, v);
lv_obj_t *card = lv_obj_get_parent(scale1);
lv_obj_t *label = lv_obj_get_child(card, -3);
lv_label_set_text_fmt(label, "Sales: %"LV_PRId32" %%", v);
}
static void scale1_indic3_anim_cb(void *var, int32_t v)
{
lv_arc_set_value(var, v);
lv_obj_t *card = lv_obj_get_parent(scale1);
lv_obj_t *label = lv_obj_get_child(card, -1);
lv_label_set_text_fmt(label, "Costs: %"LV_PRId32" %%", v);
}
void example_lvgl_demo_ui(lv_display_t *disp)
{
// init default theme
lv_theme_default_init(disp, lv_palette_main(LV_PALETTE_BLUE), lv_palette_main(LV_PALETTE_RED), LV_THEME_DEFAULT_DARK,
font_normal);
// bullet style
lv_style_init(&style_bullet);
lv_style_set_border_width(&style_bullet, 0);
lv_style_set_radius(&style_bullet, LV_RADIUS_CIRCLE);
lv_obj_t *parent = lv_display_get_screen_active(disp);
// create scale widget
scale1 = create_scale_box(parent, "Revenue", "Sales", "Costs");
// create arc indicators
lv_obj_t *arc;
arc = lv_arc_create(scale1);
lv_obj_remove_style(arc, NULL, LV_PART_KNOB);
lv_obj_remove_style(arc, NULL, LV_PART_MAIN);
lv_obj_set_size(arc, lv_pct(100), lv_pct(100));
lv_obj_set_style_arc_opa(arc, 0, 0);
lv_obj_set_style_arc_width(arc, 15, LV_PART_INDICATOR);
lv_obj_set_style_arc_color(arc, lv_palette_main(LV_PALETTE_BLUE), LV_PART_INDICATOR);
lv_obj_remove_flag(arc, LV_OBJ_FLAG_CLICKABLE);
// animation
lv_anim_t a;
lv_anim_init(&a);
lv_anim_set_values(&a, 20, 100);
lv_anim_set_repeat_count(&a, LV_ANIM_REPEAT_INFINITE);
lv_anim_set_exec_cb(&a, scale1_indic1_anim_cb);
lv_anim_set_var(&a, arc);
lv_anim_set_duration(&a, 4100);
lv_anim_set_playback_duration(&a, 2700);
lv_anim_start(&a);
arc = lv_arc_create(scale1);
lv_obj_remove_style(arc, NULL, LV_PART_KNOB);
lv_obj_set_size(arc, lv_pct(100), lv_pct(100));
lv_obj_set_style_margin_all(arc, 20, 0);
lv_obj_set_style_arc_opa(arc, 0, 0);
lv_obj_set_style_arc_width(arc, 15, LV_PART_INDICATOR);
lv_obj_set_style_arc_color(arc, lv_palette_main(LV_PALETTE_RED), LV_PART_INDICATOR);
lv_obj_remove_flag(arc, LV_OBJ_FLAG_CLICKABLE);
lv_obj_center(arc);
lv_anim_set_exec_cb(&a, scale1_indic2_anim_cb);
lv_anim_set_var(&a, arc);
lv_anim_set_duration(&a, 2600);
lv_anim_set_playback_duration(&a, 3200);
lv_anim_start(&a);
arc = lv_arc_create(scale1);
lv_obj_remove_style(arc, NULL, LV_PART_KNOB);
lv_obj_set_size(arc, lv_pct(100), lv_pct(100));
lv_obj_set_style_margin_all(arc, 40, 0);
lv_obj_set_style_arc_opa(arc, 0, 0);
lv_obj_set_style_arc_width(arc, 15, LV_PART_INDICATOR);
lv_obj_set_style_arc_color(arc, lv_palette_main(LV_PALETTE_GREEN), LV_PART_INDICATOR);
lv_obj_remove_flag(arc, LV_OBJ_FLAG_CLICKABLE);
lv_obj_center(arc);
lv_anim_set_exec_cb(&a, scale1_indic3_anim_cb);
lv_anim_set_var(&a, arc);
lv_anim_set_duration(&a, 2800);
lv_anim_set_playback_duration(&a, 1800);
lv_anim_start(&a);
}

244
firmware/main/valconomy.c
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@@ -1,46 +1,214 @@
#include <stdio.h>
#include <inttypes.h>
#include <stdio.h>
#include <unistd.h>
#include <sys/lock.h>
#include "sdkconfig.h"
#include "freertos/FreeRTOS.h"
#include "freertos/task.h"
#include "esp_chip_info.h"
#include "esp_flash.h"
#include "esp_system.h"
#include "esp_err.h"
#include "esp_log.h"
#include "esp_timer.h"
#include "esp_lcd_panel_ops.h"
#include "esp_lcd_panel_rgb.h"
#include "driver/i2c_master.h"
#include "lvgl.h"
#define LCD_HRES 800
#define LCD_VRES 480
#define LCD_PIXEL_SIZE 2
// in ms
#define LVGL_TICK_PERIOD 2
#define LVGL_TASK_PRIORITY 2
#define LVGL_TASK_STACK_SIZE (4 * 1024)
static const char *TAG = "valconomy";
i2c_master_bus_handle_t i2c_bus_handle;
// LVGL library is not thread-safe, this example will call LVGL APIs from different tasks, so use a mutex to protect it
static _lock_t lvgl_api_lock;
extern void example_lvgl_demo_ui(lv_display_t *disp);
static bool example_on_vsync(esp_lcd_panel_handle_t panel, const esp_lcd_rgb_panel_event_data_t *event_data, void *user_ctx) {
return false;
}
static void example_lvgl_flush_cb(lv_display_t *disp, const lv_area_t *area, uint8_t *px_map) {
esp_lcd_panel_handle_t panel_handle = lv_display_get_user_data(disp);
// pass the draw buffer to the driver
esp_lcd_panel_draw_bitmap(panel_handle, area->x1, area->y1, area->x2 + 1, area->y2 + 1, px_map);
lv_disp_flush_ready(disp);
}
static void example_increase_lvgl_tick(void *arg) {
/* Tell LVGL how many milliseconds has elapsed */
lv_tick_inc(LVGL_TICK_PERIOD);
}
static void example_lvgl_port_task(void *arg) {
ESP_LOGI(TAG, "Starting LVGL task");
uint32_t time_till_next_ms = 0;
while (1) {
_lock_acquire(&lvgl_api_lock);
time_till_next_ms = lv_timer_handler();
_lock_release(&lvgl_api_lock);
// in case of task watch dog timeout, set the minimal delay to 10ms
if (time_till_next_ms < 10) {
time_till_next_ms = 10;
}
usleep(1000 * time_till_next_ms);
}
}
static esp_err_t i2c_master_init(void) {
i2c_master_bus_config_t i2c_mst_config = {
.clk_source = I2C_CLK_SRC_DEFAULT,
.i2c_port = I2C_NUM_0,
.scl_io_num = 9,
.sda_io_num = 8,
.glitch_ignore_cnt = 7,
.flags.enable_internal_pullup = true,
};
return i2c_new_master_bus(&i2c_mst_config, &i2c_bus_handle);
}
static void setup_lcd() {
ESP_LOGI(TAG, "Init I2C");
ESP_ERROR_CHECK(i2c_master_init());
i2c_device_config_t exio_dev_cfg = {
.dev_addr_length = I2C_ADDR_BIT_LEN_7,
.device_address = 0x24, // CH422G config register
.scl_speed_hz = 100000,
};
i2c_master_dev_handle_t exio_cfg_handle, exio_o_handle;
ESP_ERROR_CHECK(i2c_master_bus_add_device(i2c_bus_handle, &exio_dev_cfg, &exio_cfg_handle));
exio_dev_cfg.device_address = 0x38;
ESP_ERROR_CHECK(i2c_master_bus_add_device(i2c_bus_handle, &exio_dev_cfg, &exio_o_handle));
uint8_t i2c_b;
i2c_b = 0x01; // Output enable
ESP_ERROR_CHECK(i2c_master_transmit(exio_cfg_handle, &i2c_b, 1, -1));
i2c_b = 0x00; // Reset everything
ESP_ERROR_CHECK(i2c_master_transmit(exio_o_handle, &i2c_b, 1, -1));
usleep(10 * 1000);
i2c_b = 0x08; // Pull LCD out of reset
ESP_ERROR_CHECK(i2c_master_transmit(exio_o_handle, &i2c_b, 1, -1));
usleep(100 * 1000);
ESP_LOGI(TAG, "Install RGB LCD panel driver");
esp_lcd_panel_handle_t panel_handle = NULL;
esp_lcd_rgb_panel_config_t panel_config = {
.data_width = 16, // RGB565
.psram_trans_align = 64,
.num_fbs = 2,
.clk_src = LCD_CLK_SRC_DEFAULT,
.disp_gpio_num = -1, // Only accessible via GPIO expander
.pclk_gpio_num = 7,
.vsync_gpio_num = 3,
.hsync_gpio_num = 46,
.de_gpio_num = 5,
.data_gpio_nums = {
14, // B3
38, // B4
18, // B5
17, // B6
10, // B7
39, // G2
0, // G3
45, // G4
48, // G5
47, // G6
21, // G7
1, // R3
2, // R4
42, // R5
41, // R6
40, // R7
},
.timings = {
.pclk_hz = 18 * 1000 * 1000, // 18000000 / (hs+hbp+hfp+hres) / (vs+vbp+hfp+vres) = ~42Hz
.h_res = LCD_HRES,
.v_res = LCD_VRES,
.hsync_back_porch = 8,
.hsync_front_porch = 8,
.hsync_pulse_width = 4,
.vsync_back_porch = 16,
.vsync_front_porch = 16,
.vsync_pulse_width = 4,
.flags = {
.pclk_active_neg = true,
},
},
.flags.fb_in_psram = true, // allocate frame buffer in PSRAM
};
ESP_ERROR_CHECK(esp_lcd_new_rgb_panel(&panel_config, &panel_handle));
ESP_LOGI(TAG, "Initialize RGB LCD panel");
ESP_ERROR_CHECK(esp_lcd_panel_reset(panel_handle));
ESP_ERROR_CHECK(esp_lcd_panel_init(panel_handle));
ESP_LOGI(TAG, "Turn on LCD backlight");
i2c_b = 0x0e; // LCD out of reset, backlight on
ESP_ERROR_CHECK(i2c_master_transmit(exio_o_handle, &i2c_b, 1, -1));
ESP_LOGI(TAG, "Initialize LVGL library");
lv_init();
// create a lvgl display
lv_display_t *display = lv_display_create(LCD_HRES, LCD_VRES);
// associate the rgb panel handle to the display
lv_display_set_user_data(display, panel_handle);
// set color depth
lv_display_set_color_format(display, LV_COLOR_FORMAT_RGB565);
// create draw buffers
void *buf1 = NULL;
void *buf2 = NULL;
ESP_LOGI(TAG, "Use frame buffers as LVGL draw buffers");
ESP_ERROR_CHECK(esp_lcd_rgb_panel_get_frame_buffer(panel_handle, 2, &buf1, &buf2));
// set LVGL draw buffers and direct mode
lv_display_set_buffers(display, buf1, buf2, LCD_HRES * LCD_VRES * LCD_PIXEL_SIZE, LV_DISPLAY_RENDER_MODE_DIRECT);
// set the callback which can copy the rendered image to an area of the display
lv_display_set_flush_cb(display, example_lvgl_flush_cb);
ESP_LOGI(TAG, "Register event callbacks");
esp_lcd_rgb_panel_event_callbacks_t cbs = {
.on_vsync = example_on_vsync,
};
ESP_ERROR_CHECK(esp_lcd_rgb_panel_register_event_callbacks(panel_handle, &cbs, display));
ESP_LOGI(TAG, "Install LVGL tick timer");
// Tick interface for LVGL (using esp_timer to generate 2ms periodic event)
const esp_timer_create_args_t lvgl_tick_timer_args = {
.callback = &example_increase_lvgl_tick,
.name = "lvgl_tick"
};
esp_timer_handle_t lvgl_tick_timer = NULL;
ESP_ERROR_CHECK(esp_timer_create(&lvgl_tick_timer_args, &lvgl_tick_timer));
ESP_ERROR_CHECK(esp_timer_start_periodic(lvgl_tick_timer, LVGL_TICK_PERIOD * 1000));
ESP_LOGI(TAG, "Create LVGL task");
xTaskCreate(example_lvgl_port_task, "LVGL", LVGL_TASK_STACK_SIZE, NULL, LVGL_TASK_PRIORITY, NULL);
ESP_LOGI(TAG, "Display LVGL UI");
// Lock the mutex due to the LVGL APIs are not thread-safe
_lock_acquire(&lvgl_api_lock);
example_lvgl_demo_ui(display);
_lock_release(&lvgl_api_lock);
}
void app_main(void) {
printf("Hello world!\n");
/* Print chip information */
esp_chip_info_t chip_info;
uint32_t flash_size;
esp_chip_info(&chip_info);
printf("This is %s chip with %d CPU core(s), %s%s%s%s, ",
CONFIG_IDF_TARGET,
chip_info.cores,
(chip_info.features & CHIP_FEATURE_WIFI_BGN) ? "WiFi/" : "",
(chip_info.features & CHIP_FEATURE_BT) ? "BT" : "",
(chip_info.features & CHIP_FEATURE_BLE) ? "BLE" : "",
(chip_info.features & CHIP_FEATURE_IEEE802154) ? ", 802.15.4 (Zigbee/Thread)" : "");
unsigned major_rev = chip_info.revision / 100;
unsigned minor_rev = chip_info.revision % 100;
printf("silicon revision v%d.%d, ", major_rev, minor_rev);
if(esp_flash_get_size(NULL, &flash_size) != ESP_OK) {
printf("Get flash size failed");
return;
}
printf("%" PRIu32 "MB %s flash\n", flash_size / (uint32_t)(1024 * 1024),
(chip_info.features & CHIP_FEATURE_EMB_FLASH) ? "embedded" : "external");
printf("Minimum free heap size: %" PRIu32 " bytes\n", esp_get_minimum_free_heap_size());
for (int i = 10; i >= 0; i--) {
printf("Restarting in %d seconds...\n", i);
vTaskDelay(1000 / portTICK_PERIOD_MS);
}
printf("Restarting now.\n");
fflush(stdout);
esp_restart();
setup_lcd();
}