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Add configurable offset to SPI screen

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This commit is contained in:
Kevincoooool
2024-11-30 19:00:05 +08:00
parent 5e7c5da337
commit 43a0cbeebc
5 changed files with 167 additions and 35 deletions
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2
main/display/display.h
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@@ -24,6 +24,8 @@ public:
protected:
int width_ = 0;
int height_ = 0;
int offset_x_ = 0;
int offset_y_ = 0;
lv_disp_t *disp_ = nullptr;

193
main/display/st7789_display.cc
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@@ -10,22 +10,134 @@
#define TAG "St7789Display"
#define LCD_LEDC_CH LEDC_CHANNEL_0
#define ST7789_LVGL_TICK_PERIOD_MS 2
#define ST7789_LVGL_TASK_MAX_DELAY_MS 20
#define ST7789_LVGL_TASK_MIN_DELAY_MS 1
#define ST7789_LVGL_TASK_STACK_SIZE (4 * 1024)
#define ST7789_LVGL_TASK_PRIORITY 10
LV_FONT_DECLARE(font_puhui_14_1);
LV_FONT_DECLARE(font_awesome_30_1);
LV_FONT_DECLARE(font_awesome_14_1);
static SemaphoreHandle_t lvgl_mux = NULL;
static lv_disp_drv_t disp_drv;
static void st7789_lvgl_flush_cb(lv_disp_drv_t *drv, const lv_area_t *area, lv_color_t *color_map)
{
esp_lcd_panel_handle_t panel_handle = (esp_lcd_panel_handle_t)drv->user_data;
int offsetx1 = area->x1;
int offsetx2 = area->x2;
int offsety1 = area->y1;
int offsety2 = area->y2;
// copy a buffer's content to a specific area of the display
esp_lcd_panel_draw_bitmap(panel_handle, offsetx1, offsety1, offsetx2 + 1, offsety2 + 1, color_map);
lv_disp_flush_ready(&disp_drv);
}
/* Rotate display and touch, when rotated screen in LVGL. Called when driver parameters are updated. */
static void st7789_lvgl_port_update_callback(lv_disp_drv_t *drv)
{
esp_lcd_panel_handle_t panel_handle = (esp_lcd_panel_handle_t)drv->user_data;
switch (drv->rotated)
{
case LV_DISP_ROT_NONE:
// Rotate LCD display
esp_lcd_panel_swap_xy(panel_handle, false);
esp_lcd_panel_mirror(panel_handle, true, false);
#if CONFIG_ST7789_LCD_TOUCH_ENABLED
// Rotate LCD touch
esp_lcd_touch_set_mirror_y(tp, false);
esp_lcd_touch_set_mirror_x(tp, false);
#endif
break;
case LV_DISP_ROT_90:
// Rotate LCD display
esp_lcd_panel_swap_xy(panel_handle, true);
esp_lcd_panel_mirror(panel_handle, true, true);
#if CONFIG_ST7789_LCD_TOUCH_ENABLED
// Rotate LCD touch
esp_lcd_touch_set_mirror_y(tp, false);
esp_lcd_touch_set_mirror_x(tp, false);
#endif
break;
case LV_DISP_ROT_180:
// Rotate LCD display
esp_lcd_panel_swap_xy(panel_handle, false);
esp_lcd_panel_mirror(panel_handle, false, true);
#if CONFIG_ST7789_LCD_TOUCH_ENABLED
// Rotate LCD touch
esp_lcd_touch_set_mirror_y(tp, false);
esp_lcd_touch_set_mirror_x(tp, false);
#endif
break;
case LV_DISP_ROT_270:
// Rotate LCD display
esp_lcd_panel_swap_xy(panel_handle, true);
esp_lcd_panel_mirror(panel_handle, false, false);
#if CONFIG_ST7789_LCD_TOUCH_ENABLED
// Rotate LCD touch
esp_lcd_touch_set_mirror_y(tp, false);
esp_lcd_touch_set_mirror_x(tp, false);
#endif
break;
}
}
static void st7789_increase_lvgl_tick(void *arg)
{
/* Tell LVGL how many milliseconds has elapsed */
lv_tick_inc(ST7789_LVGL_TICK_PERIOD_MS);
}
static bool st7789_lvgl_lock(int timeout_ms)
{
// Convert timeout in milliseconds to FreeRTOS ticks
// If `timeout_ms` is set to -1, the program will block until the condition is met
const TickType_t timeout_ticks = (timeout_ms == -1) ? portMAX_DELAY : pdMS_TO_TICKS(timeout_ms);
return xSemaphoreTakeRecursive(lvgl_mux, timeout_ticks) == pdTRUE;
}
static void st7789_lvgl_unlock(void)
{
xSemaphoreGiveRecursive(lvgl_mux);
}
static void st7789_lvgl_port_task(void *arg)
{
ESP_LOGI(TAG, "Starting LVGL task");
uint32_t task_delay_ms = ST7789_LVGL_TASK_MAX_DELAY_MS;
while (1)
{
// Lock the mutex due to the LVGL APIs are not thread-safe
if (st7789_lvgl_lock(-1))
{
task_delay_ms = lv_timer_handler();
// Release the mutex
st7789_lvgl_unlock();
}
if (task_delay_ms > ST7789_LVGL_TASK_MAX_DELAY_MS)
{
task_delay_ms = ST7789_LVGL_TASK_MAX_DELAY_MS;
}
else if (task_delay_ms < ST7789_LVGL_TASK_MIN_DELAY_MS)
{
task_delay_ms = ST7789_LVGL_TASK_MIN_DELAY_MS;
}
vTaskDelay(pdMS_TO_TICKS(task_delay_ms));
}
}
St7789Display::St7789Display(esp_lcd_panel_io_handle_t panel_io, esp_lcd_panel_handle_t panel,
gpio_num_t backlight_pin, bool backlight_output_invert,
int width, int height, bool mirror_x, bool mirror_y, bool swap_xy)
int width, int height, int offset_x, int offset_y, bool mirror_x, bool mirror_y, bool swap_xy)
: panel_io_(panel_io), panel_(panel), backlight_pin_(backlight_pin), backlight_output_invert_(backlight_output_invert),
mirror_x_(mirror_x), mirror_y_(mirror_y), swap_xy_(swap_xy) {
width_ = width;
height_ = height;
offset_x_ = offset_x;
offset_y_ = offset_y;
ESP_LOGI(TAG, "Initialize LVGL");
lvgl_port_cfg_t port_cfg = ESP_LVGL_PORT_INIT_CONFIG();
lvgl_port_init(&port_cfg);
InitializeBacklight(backlight_pin);
// draw white
@@ -38,32 +150,44 @@ St7789Display::St7789Display(esp_lcd_panel_io_handle_t panel_io, esp_lcd_panel_h
ESP_LOGI(TAG, "Turning display on");
ESP_ERROR_CHECK(esp_lcd_panel_disp_on_off(panel_, true));
ESP_LOGI(TAG, "Adding LCD screen");
const lvgl_port_display_cfg_t display_cfg = {
.io_handle = panel_io_,
.panel_handle = panel_,
.control_handle = nullptr,
.buffer_size = static_cast<uint32_t>(width_ * 20),
.double_buffer = false,
.trans_size = 0,
.hres = static_cast<uint32_t>(width_),
.vres = static_cast<uint32_t>(height_),
.monochrome = false,
.rotation = {
.swap_xy = swap_xy_,
.mirror_x = mirror_x_,
.mirror_y = mirror_y_,
},
.flags = {
.buff_dma = 1,
.buff_spiram = 0,
.sw_rotate = 0,
.full_refresh = 0,
.direct_mode = 0,
},
};
ESP_LOGI(TAG, "Initialize LVGL library");
lv_init();
// alloc draw buffers used by LVGL
static lv_disp_draw_buf_t disp_buf; // contains internal graphic buffer(s) called draw buffer(s)
// it's recommended to choose the size of the draw buffer(s) to be at least 1/10 screen sized
lv_color_t *buf1 = (lv_color_t *)heap_caps_malloc(width_ * 10 * sizeof(lv_color_t), MALLOC_CAP_DMA);
assert(buf1);
lv_color_t *buf2 = (lv_color_t *)heap_caps_malloc(width_ * 10 * sizeof(lv_color_t), MALLOC_CAP_DMA);
assert(buf2);
// initialize LVGL draw buffers
lv_disp_draw_buf_init(&disp_buf, buf1, buf2, width_ * 10);
disp_ = lvgl_port_add_disp(&display_cfg);
ESP_LOGI(TAG, "Register display driver to LVGL");
lv_disp_drv_init(&disp_drv);
disp_drv.hor_res = width_;
disp_drv.ver_res = height_;
disp_drv.offset_x = offset_x_;
disp_drv.offset_y = offset_y_;
disp_drv.flush_cb = st7789_lvgl_flush_cb;
disp_drv.drv_update_cb = st7789_lvgl_port_update_callback;
disp_drv.draw_buf = &disp_buf;
disp_drv.user_data = panel_;
lv_disp_t *disp = lv_disp_drv_register(&disp_drv);
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 = &st7789_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, ST7789_LVGL_TICK_PERIOD_MS * 1000));
lvgl_mux = xSemaphoreCreateRecursiveMutex();
assert(lvgl_mux);
ESP_LOGI(TAG, "Create LVGL task");
xTaskCreate(st7789_lvgl_port_task, "LVGL", ST7789_LVGL_TASK_STACK_SIZE, NULL, ST7789_LVGL_TASK_PRIORITY, NULL);
SetBacklight(100);
@@ -141,17 +265,20 @@ void St7789Display::SetBacklight(uint8_t brightness) {
}
void St7789Display::Lock() {
lvgl_port_lock(0);
// lvgl_port_lock(0);
st7789_lvgl_lock(0);
}
void St7789Display::Unlock() {
lvgl_port_unlock();
// lvgl_port_unlock();
st7789_lvgl_unlock();
}
void St7789Display::SetupUI() {
DisplayLockGuard lock(this);
auto screen = lv_disp_get_scr_act(disp_);
auto screen = lv_disp_get_scr_act(lv_disp_get_default());
// auto screen = lv_scr_act();
lv_obj_set_style_text_font(screen, &font_puhui_14_1, 0);
lv_obj_set_style_text_color(screen, lv_color_black(), 0);

2
main/display/st7789_display.h
View File

@@ -32,7 +32,7 @@ private:
public:
St7789Display(esp_lcd_panel_io_handle_t panel_io, esp_lcd_panel_handle_t panel,
gpio_num_t backlight_pin, bool backlight_output_invert,
int width, int height, bool mirror_x, bool mirror_y, bool swap_xy);
int width, int height, int offset_x, int offset_y, bool mirror_x, bool mirror_y, bool swap_xy);
~St7789Display();
};