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rgb_lcd: added API to get the frame buffer(s)

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This commit is contained in:
morris 2022-07-06 16:43:08 +08:00
parent 226bd6bc2d
commit 140536892d
2 changed files with 33 additions and 1 deletions
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13
components/esp_lcd/include/esp_lcd_panel_rgb.h
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@ -168,6 +168,19 @@ esp_err_t esp_lcd_rgb_panel_register_event_callbacks(esp_lcd_panel_handle_t pane
*
* @param panel LCD panel handle, returned from `esp_lcd_new_rgb_panel()`
* @param freq_hz Frequency of pixel clock, in Hz
/**
* @brief Get the address of the frame buffer(s) that allocated by the driver
*
* @param[in] panel LCD panel handle, returned from `esp_lcd_new_rgb_panel()`
* @param[in] fb_num Number of frame buffer(s) to get. This value must be the same as the number of the following parameters.
* @param[out] fb0 Returned address of the frame buffer 0
* @param[out] ... List of other frame buffer addresses
* @return
* - ESP_ERR_INVALID_ARG: Get frame buffer address failed because of invalid argument
* - ESP_OK: Get frame buffer address successfully
*/
esp_err_t esp_lcd_rgb_panel_get_frame_buffer(esp_lcd_panel_handle_t panel, uint32_t fb_num, void **fb0, ...);
* @return
* - ESP_ERR_NOT_SUPPORTED if frequency is unreachable
* - ESP_ERR_INVALID_ARG if parameter panel is invalid

21
components/esp_lcd/src/esp_lcd_rgb_panel.c
View File

@ -5,6 +5,7 @@
*/
#include <stdlib.h>
#include <stdarg.h>
#include <sys/cdefs.h>
#include <sys/param.h>
#include <string.h>
@ -38,7 +39,7 @@
#include "soc/lcd_periph.h"
#include "hal/lcd_hal.h"
#include "hal/lcd_ll.h"
#include <rom/cache.h>
#include "rom/cache.h"
#if CONFIG_LCD_RGB_ISR_IRAM_SAFE
#define LCD_RGB_INTR_ALLOC_FLAGS (ESP_INTR_FLAG_IRAM | ESP_INTR_FLAG_INTRDISABLED)
@ -319,6 +320,24 @@ esp_err_t esp_lcd_rgb_panel_register_event_callbacks(esp_lcd_panel_handle_t pane
return ESP_OK;
}
esp_err_t esp_lcd_rgb_panel_get_frame_buffer(esp_lcd_panel_handle_t panel, uint32_t fb_num, void **fb0, ...)
{
ESP_RETURN_ON_FALSE(panel, ESP_ERR_INVALID_ARG, TAG, "invalid argument");
ESP_RETURN_ON_FALSE(fb_num && fb_num <= 2, ESP_ERR_INVALID_ARG, TAG, "invalid frame buffer number");
esp_rgb_panel_t *rgb_panel = __containerof(panel, esp_rgb_panel_t, base);
void **fb_itor = fb0;
va_list args;
va_start(args, fb0);
for (int i = 0; i < fb_num; i++) {
if (fb_itor) {
*fb_itor = rgb_panel->fbs[i];
fb_itor = va_arg(args, void **);
}
}
va_end(args);
return ESP_OK;
}
static esp_err_t rgb_panel_del(esp_lcd_panel_t *panel)
{
esp_rgb_panel_t *rgb_panel = __containerof(panel, esp_rgb_panel_t, base);