ESP-IDF
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Outline
#include <stdbool.h>
#include "esp_err.h"
#include "esp_lcd_types.h"
#include "esp_lcd_io_i80.h"
#include "esp_lcd_io_i2c.h"
#include "esp_lcd_io_spi.h"
esp_lcd_panel_io_rx_param(esp_lcd_panel_io_handle_t, int, void *, size_t);
esp_lcd_panel_io_tx_param(esp_lcd_panel_io_handle_t, int, const void *, size_t);
esp_lcd_panel_io_tx_color(esp_lcd_panel_io_handle_t, int, const void *, size_t);
esp_lcd_panel_io_del(esp_lcd_panel_io_handle_t);
esp_lcd_panel_io_register_event_callbacks(esp_lcd_panel_io_handle_t, const esp_lcd_panel_io_callbacks_t *, void *);
Files
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SourceVuESP-IDF Framework and ExamplesESP-IDFcomponents/esp_lcd/include/esp_lcd_panel_io.h
 
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/* * SPDX-FileCopyrightText: 2021-2024 Espressif Systems (Shanghai) CO LTD * * SPDX-License-Identifier: Apache-2.0 *//* ... */ #pragma once #include <stdbool.h> #include "esp_err.h" #include "esp_lcd_types.h" #include "esp_lcd_io_i80.h" #include "esp_lcd_io_i2c.h" #include "esp_lcd_io_spi.h"6 includes #ifdef __cplusplus extern "C" { #endif /** * @brief Transmit LCD command and receive corresponding parameters * * @note Commands sent by this function are short, so they are sent using polling transactions. * The function does not return before the command transfer is completed. * If any queued transactions sent by `esp_lcd_panel_io_tx_color()` are still pending when this function is called, * this function will wait until they are finished and the queue is empty before sending the command(s). * * @param[in] io LCD panel IO handle, which is created by other factory API like `esp_lcd_new_panel_io_spi()` * @param[in] lcd_cmd The specific LCD command, set to -1 if no command needed * @param[out] param Buffer for the command data * @param[in] param_size Size of `param` buffer * @return * - ESP_ERR_INVALID_ARG if parameter is invalid * - ESP_ERR_NOT_SUPPORTED if read is not supported by transport * - ESP_OK on success *//* ... */ esp_err_t esp_lcd_panel_io_rx_param(esp_lcd_panel_io_handle_t io, int lcd_cmd, void *param, size_t param_size); /** * @brief Transmit LCD command and corresponding parameters * * @note Commands sent by this function are short, so they are sent using polling transactions. * The function does not return before the command transfer is completed. * If any queued transactions sent by `esp_lcd_panel_io_tx_color()` are still pending when this function is called, * this function will wait until they are finished and the queue is empty before sending the command(s). * * @param[in] io LCD panel IO handle, which is created by other factory API like `esp_lcd_new_panel_io_spi()` * @param[in] lcd_cmd The specific LCD command, set to -1 if no command needed * @param[in] param Buffer that holds the command specific parameters, set to NULL if no parameter is needed for the command * @param[in] param_size Size of `param` in memory, in bytes, set to zero if no parameter is needed for the command * @return * - ESP_ERR_INVALID_ARG if parameter is invalid * - ESP_OK on success *//* ... */ esp_err_t esp_lcd_panel_io_tx_param(esp_lcd_panel_io_handle_t io, int lcd_cmd, const void *param, size_t param_size); /** * @brief Transmit LCD RGB data * * @note This function will package the command and RGB data into a transaction, and push into a queue. * The real transmission is performed in the background (DMA+interrupt). * The caller should take care of the lifecycle of the `color` buffer. * Recycling of color buffer should be done in the callback `on_color_trans_done()`. * * @param[in] io LCD panel IO handle, which is created by factory API like `esp_lcd_new_panel_io_spi()` * @param[in] lcd_cmd The specific LCD command, set to -1 if no command needed * @param[in] color Buffer that holds the RGB color data * @param[in] color_size Size of `color` in memory, in bytes * @return * - ESP_ERR_INVALID_ARG if parameter is invalid * - ESP_OK on success *//* ... */ esp_err_t esp_lcd_panel_io_tx_color(esp_lcd_panel_io_handle_t io, int lcd_cmd, const void *color, size_t color_size); /** * @brief Destroy LCD panel IO handle (deinitialize panel and free all corresponding resource) * * @param[in] io LCD panel IO handle, which is created by factory API like `esp_lcd_new_panel_io_spi()` * @return * - ESP_ERR_INVALID_ARG if parameter is invalid * - ESP_OK on success *//* ... */ esp_err_t esp_lcd_panel_io_del(esp_lcd_panel_io_handle_t io); /** * @brief Register LCD panel IO callbacks * * @param[in] io LCD panel IO handle, which is created by factory API like `esp_lcd_new_panel_io_spi()` * @param[in] cbs structure with all LCD panel IO callbacks * @param[in] user_ctx User private data, passed directly to callback's user_ctx * @return * - ESP_ERR_INVALID_ARG if parameter is invalid * - ESP_OK on success *//* ... */ esp_err_t esp_lcd_panel_io_register_event_callbacks(esp_lcd_panel_io_handle_t io, const esp_lcd_panel_io_callbacks_t *cbs, void *user_ctx); #ifdef __cplusplus }{...} #endif
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