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rgb_lcd: support 8bit RGB (SRGB) interface

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This commit is contained in:
morris 2022-07-06 16:59:37 +08:00
parent ad35ed2e58
commit 9ea3f6f3e7
2 changed files with 9 additions and 2 deletions
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2
components/esp_lcd/include/esp_lcd_panel_rgb.h
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@ -116,6 +116,8 @@ typedef struct {
size_t data_width; /*!< Number of data lines */
size_t sram_trans_align; /*!< Alignment for framebuffer that allocated in SRAM */
size_t psram_trans_align; /*!< Alignment for framebuffer that allocated in PSRAM */
size_t bits_per_pixel; /*!< Color depth, in bpp, specially, if set to zero, it will default to `data_width`.
When using a Serial RGB interface, this value could be different from `data_width` */
int hsync_gpio_num; /*!< GPIO used for HSYNC signal */
int vsync_gpio_num; /*!< GPIO used for VSYNC signal */
int de_gpio_num; /*!< GPIO used for DE signal, set to -1 if it's not used */

9
components/esp_lcd/src/esp_lcd_rgb_panel.c
View File

@ -51,7 +51,6 @@ static const char *TAG = "lcd_panel.rgb";
typedef struct esp_rgb_panel_t esp_rgb_panel_t;
static esp_err_t rgb_panel_del(esp_lcd_panel_t *panel);
static esp_err_t rgb_panel_reset(esp_lcd_panel_t *panel);
static esp_err_t rgb_panel_init(esp_lcd_panel_t *panel);
@ -71,7 +70,8 @@ struct esp_rgb_panel_t {
esp_lcd_panel_t base; // Base class of generic lcd panel
int panel_id; // LCD panel ID
lcd_hal_context_t hal; // Hal layer object
size_t data_width; // Number of data lines (e.g. for RGB565, the data width is 16)
size_t data_width; // Number of data lines
size_t bits_per_pixel; // Color depth, in bpp
size_t sram_trans_align; // Alignment for framebuffer that allocated in SRAM
size_t psram_trans_align; // Alignment for framebuffer that allocated in PSRAM
int disp_gpio_num; // Display control GPIO, which is used to perform action like "disp_off"
@ -127,6 +127,10 @@ esp_err_t esp_lcd_new_rgb_panel(const esp_lcd_rgb_panel_config_t *rgb_panel_conf
#if CONFIG_LCD_RGB_ISR_IRAM_SAFE
if (rgb_panel_config->on_frame_trans_done) {
ESP_RETURN_ON_FALSE(esp_ptr_in_iram(rgb_panel_config->on_frame_trans_done), ESP_ERR_INVALID_ARG, TAG, "on_frame_trans_done callback not in IRAM");
// bpp defaults to the number of data lines, but for serial RGB interface, they're not equal
size_t bits_per_pixel = rgb_panel_config->data_width;
if (rgb_panel_config->bits_per_pixel) { // override bpp if it's set
bits_per_pixel = rgb_panel_config->bits_per_pixel;
}
if (rgb_panel_config->user_ctx) {
ESP_RETURN_ON_FALSE(esp_ptr_internal(rgb_panel_config->user_ctx), ESP_ERR_INVALID_ARG, TAG, "user context not in internal RAM");
@ -242,6 +246,7 @@ esp_err_t esp_lcd_new_rgb_panel(const esp_lcd_rgb_panel_config_t *rgb_panel_conf
memcpy(rgb_panel->data_gpio_nums, rgb_panel_config->data_gpio_nums, SOC_LCD_RGB_DATA_WIDTH);
rgb_panel->timings = rgb_panel_config->timings;
rgb_panel->data_width = rgb_panel_config->data_width;
rgb_panel->bits_per_pixel = bits_per_pixel;
rgb_panel->disp_gpio_num = rgb_panel_config->disp_gpio_num;
rgb_panel->flags.disp_en_level = !rgb_panel_config->flags.disp_active_low;
rgb_panel->flags.bb_do_cache_invalidate = rgb_panel_config->flags.bb_do_cache_invalidate;