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274 lines
13 KiB
C
274 lines
13 KiB
C
/*
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* SPDX-FileCopyrightText: 2021-2023 Espressif Systems (Shanghai) CO LTD
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#pragma once
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#include <stdbool.h>
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#include "esp_err.h"
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#include "esp_lcd_types.h"
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#include "soc/soc_caps.h"
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#include "hal/lcd_types.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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typedef void *esp_lcd_spi_bus_handle_t; /*!< Type of LCD SPI bus handle */
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typedef void *esp_lcd_i2c_bus_handle_t; /*!< Type of LCD I2C bus handle */
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typedef struct esp_lcd_i80_bus_t *esp_lcd_i80_bus_handle_t; /*!< Type of LCD intel 8080 bus handle */
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/**
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* @brief Type of LCD panel IO event data
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*/
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typedef struct {
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} esp_lcd_panel_io_event_data_t;
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/**
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* @brief Declare the prototype of the function that will be invoked when panel IO finishes transferring color data
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*
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* @param[in] panel_io LCD panel IO handle, which is created by factory API like `esp_lcd_new_panel_io_spi()`
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* @param[in] edata Panel IO event data, fed by driver
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* @param[in] user_ctx User data, passed from `esp_lcd_panel_io_xxx_config_t`
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* @return Whether a high priority task has been waken up by this function
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*/
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typedef bool (*esp_lcd_panel_io_color_trans_done_cb_t)(esp_lcd_panel_io_handle_t panel_io, esp_lcd_panel_io_event_data_t *edata, void *user_ctx);
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/**
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* @brief Type of LCD panel IO callbacks
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*/
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typedef struct {
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esp_lcd_panel_io_color_trans_done_cb_t on_color_trans_done; /*!< Callback invoked when color data transfer has finished */
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} esp_lcd_panel_io_callbacks_t;
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/**
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* @brief Transmit LCD command and receive corresponding parameters
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*
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* @note Commands sent by this function are short, so they are sent using polling transactions.
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* The function does not return before the command transfer is completed.
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* If any queued transactions sent by `esp_lcd_panel_io_tx_color()` are still pending when this function is called,
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* this function will wait until they are finished and the queue is empty before sending the command(s).
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*
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* @param[in] io LCD panel IO handle, which is created by other factory API like `esp_lcd_new_panel_io_spi()`
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* @param[in] lcd_cmd The specific LCD command, set to -1 if no command needed
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* @param[out] param Buffer for the command data
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* @param[in] param_size Size of `param` buffer
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* @return
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* - ESP_ERR_INVALID_ARG if parameter is invalid
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* - ESP_ERR_NOT_SUPPORTED if read is not supported by transport
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* - ESP_OK on success
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*/
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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);
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/**
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* @brief Transmit LCD command and corresponding parameters
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*
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* @note Commands sent by this function are short, so they are sent using polling transactions.
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* The function does not return before the command transfer is completed.
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* If any queued transactions sent by `esp_lcd_panel_io_tx_color()` are still pending when this function is called,
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* this function will wait until they are finished and the queue is empty before sending the command(s).
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*
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* @param[in] io LCD panel IO handle, which is created by other factory API like `esp_lcd_new_panel_io_spi()`
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* @param[in] lcd_cmd The specific LCD command, set to -1 if no command needed
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* @param[in] param Buffer that holds the command specific parameters, set to NULL if no parameter is needed for the command
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* @param[in] param_size Size of `param` in memory, in bytes, set to zero if no parameter is needed for the command
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* @return
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* - ESP_ERR_INVALID_ARG if parameter is invalid
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* - ESP_OK on success
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*/
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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);
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/**
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* @brief Transmit LCD RGB data
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*
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* @note This function will package the command and RGB data into a transaction, and push into a queue.
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* The real transmission is performed in the background (DMA+interrupt).
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* The caller should take care of the lifecycle of the `color` buffer.
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* Recycling of color buffer should be done in the callback `on_color_trans_done()`.
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*
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* @param[in] io LCD panel IO handle, which is created by factory API like `esp_lcd_new_panel_io_spi()`
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* @param[in] lcd_cmd The specific LCD command, set to -1 if no command needed
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* @param[in] color Buffer that holds the RGB color data
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* @param[in] color_size Size of `color` in memory, in bytes
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* @return
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* - ESP_ERR_INVALID_ARG if parameter is invalid
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* - ESP_OK on success
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*/
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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);
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/**
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* @brief Destroy LCD panel IO handle (deinitialize panel and free all corresponding resource)
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*
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* @param[in] io LCD panel IO handle, which is created by factory API like `esp_lcd_new_panel_io_spi()`
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* @return
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* - ESP_ERR_INVALID_ARG if parameter is invalid
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* - ESP_OK on success
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*/
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esp_err_t esp_lcd_panel_io_del(esp_lcd_panel_io_handle_t io);
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/**
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* @brief Register LCD panel IO callbacks
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*
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* @param[in] io LCD panel IO handle, which is created by factory API like `esp_lcd_new_panel_io_spi()`
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* @param[in] cbs structure with all LCD panel IO callbacks
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* @param[in] user_ctx User private data, passed directly to callback's user_ctx
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* @return
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* - ESP_ERR_INVALID_ARG if parameter is invalid
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* - ESP_OK on success
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*/
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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);
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/**
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* @brief Panel IO configuration structure, for SPI interface
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*/
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typedef struct {
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int cs_gpio_num; /*!< GPIO used for CS line */
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int dc_gpio_num; /*!< GPIO used to select the D/C line, set this to -1 if the D/C line is not used */
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int spi_mode; /*!< Traditional SPI mode (0~3) */
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unsigned int pclk_hz; /*!< Frequency of pixel clock */
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size_t trans_queue_depth; /*!< Size of internal transaction queue */
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esp_lcd_panel_io_color_trans_done_cb_t on_color_trans_done; /*!< Callback invoked when color data transfer has finished */
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void *user_ctx; /*!< User private data, passed directly to on_color_trans_done's user_ctx */
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int lcd_cmd_bits; /*!< Bit-width of LCD command */
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int lcd_param_bits; /*!< Bit-width of LCD parameter */
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struct {
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unsigned int dc_low_on_data: 1; /*!< If this flag is enabled, DC line = 0 means transfer data, DC line = 1 means transfer command; vice versa */
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unsigned int octal_mode: 1; /*!< transmit with octal mode (8 data lines), this mode is used to simulate Intel 8080 timing */
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unsigned int quad_mode: 1; /*!< transmit with quad mode (4 data lines), this mode is useful when transmitting LCD parameters (Only use one line for command) */
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unsigned int sio_mode: 1; /*!< Read and write through a single data line (MOSI) */
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unsigned int lsb_first: 1; /*!< transmit LSB bit first */
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unsigned int cs_high_active: 1; /*!< CS line is high active */
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} flags; /*!< Extra flags to fine-tune the SPI device */
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} esp_lcd_panel_io_spi_config_t;
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/**
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* @brief Create LCD panel IO handle, for SPI interface
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*
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* @param[in] bus SPI bus handle
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* @param[in] io_config IO configuration, for SPI interface
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* @param[out] ret_io Returned IO handle
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* @return
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* - ESP_ERR_INVALID_ARG if parameter is invalid
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* - ESP_ERR_NO_MEM if out of memory
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* - ESP_OK on success
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*/
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esp_err_t esp_lcd_new_panel_io_spi(esp_lcd_spi_bus_handle_t bus, const esp_lcd_panel_io_spi_config_t *io_config, esp_lcd_panel_io_handle_t *ret_io);
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/**
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* @brief Panel IO configuration structure, for I2C interface
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*
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*/
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typedef struct {
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uint32_t dev_addr; /*!< I2C device address */
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esp_lcd_panel_io_color_trans_done_cb_t on_color_trans_done; /*!< Callback invoked when color data transfer has finished */
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void *user_ctx; /*!< User private data, passed directly to on_color_trans_done's user_ctx */
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size_t control_phase_bytes; /*!< I2C LCD panel will encode control information (e.g. D/C selection) into control phase, in several bytes */
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unsigned int dc_bit_offset; /*!< Offset of the D/C selection bit in control phase */
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int lcd_cmd_bits; /*!< Bit-width of LCD command */
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int lcd_param_bits; /*!< Bit-width of LCD parameter */
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struct {
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unsigned int dc_low_on_data: 1; /*!< If this flag is enabled, DC line = 0 means transfer data, DC line = 1 means transfer command; vice versa */
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unsigned int disable_control_phase: 1; /*!< If this flag is enabled, the control phase isn't used */
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} flags; /*!< Extra flags to fine-tune the I2C device */
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} esp_lcd_panel_io_i2c_config_t;
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/**
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* @brief Create LCD panel IO handle, for I2C interface
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*
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* @param[in] bus I2C bus handle
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* @param[in] io_config IO configuration, for I2C interface
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* @param[out] ret_io Returned IO handle
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* @return
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* - ESP_ERR_INVALID_ARG if parameter is invalid
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* - ESP_ERR_NO_MEM if out of memory
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* - ESP_OK on success
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*/
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esp_err_t esp_lcd_new_panel_io_i2c(esp_lcd_i2c_bus_handle_t bus, const esp_lcd_panel_io_i2c_config_t *io_config, esp_lcd_panel_io_handle_t *ret_io);
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#if SOC_LCD_I80_SUPPORTED
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/**
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* @brief LCD Intel 8080 bus configuration structure
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*/
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typedef struct {
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int dc_gpio_num; /*!< GPIO used for D/C line */
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int wr_gpio_num; /*!< GPIO used for WR line */
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lcd_clock_source_t clk_src; /*!< Clock source for the I80 LCD peripheral */
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int data_gpio_nums[SOC_LCD_I80_BUS_WIDTH]; /*!< GPIOs used for data lines */
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size_t bus_width; /*!< Number of data lines, 8 or 16 */
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size_t max_transfer_bytes; /*!< Maximum transfer size, this determines the length of internal DMA link */
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size_t psram_trans_align; /*!< DMA transfer alignment for data allocated from PSRAM */
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size_t sram_trans_align; /*!< DMA transfer alignment for data allocated from SRAM */
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} esp_lcd_i80_bus_config_t;
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/**
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* @brief Create Intel 8080 bus handle
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*
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* @param[in] bus_config Bus configuration
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* @param[out] ret_bus Returned bus handle
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* @return
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* - ESP_ERR_INVALID_ARG if parameter is invalid
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* - ESP_ERR_NO_MEM if out of memory
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* - ESP_ERR_NOT_FOUND if no free bus is available
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* - ESP_OK on success
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*/
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esp_err_t esp_lcd_new_i80_bus(const esp_lcd_i80_bus_config_t *bus_config, esp_lcd_i80_bus_handle_t *ret_bus);
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/**
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* @brief Destroy Intel 8080 bus handle
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*
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* @param[in] bus Intel 8080 bus handle, created by `esp_lcd_new_i80_bus()`
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* @return
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* - ESP_ERR_INVALID_ARG if parameter is invalid
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* - ESP_ERR_INVALID_STATE if there still be some device attached to the bus
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* - ESP_OK on success
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*/
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esp_err_t esp_lcd_del_i80_bus(esp_lcd_i80_bus_handle_t bus);
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/**
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* @brief Panel IO configuration structure, for intel 8080 interface
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*/
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typedef struct {
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int cs_gpio_num; /*!< GPIO used for CS line, set to -1 will declaim exclusively use of I80 bus */
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uint32_t pclk_hz; /*!< Frequency of pixel clock */
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size_t trans_queue_depth; /*!< Transaction queue size, larger queue, higher throughput */
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esp_lcd_panel_io_color_trans_done_cb_t on_color_trans_done; /*!< Callback invoked when color data was transferred done */
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void *user_ctx; /*!< User private data, passed directly to on_color_trans_done's user_ctx */
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int lcd_cmd_bits; /*!< Bit-width of LCD command */
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int lcd_param_bits; /*!< Bit-width of LCD parameter */
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struct {
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unsigned int dc_idle_level: 1; /*!< Level of DC line in IDLE phase */
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unsigned int dc_cmd_level: 1; /*!< Level of DC line in CMD phase */
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unsigned int dc_dummy_level: 1; /*!< Level of DC line in DUMMY phase */
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unsigned int dc_data_level: 1; /*!< Level of DC line in DATA phase */
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} dc_levels; /*!< Each i80 device might have its own D/C control logic */
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struct {
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unsigned int cs_active_high: 1; /*!< If set, a high level of CS line will select the device, otherwise, CS line is low level active */
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unsigned int reverse_color_bits: 1; /*!< Reverse the data bits, D[N:0] -> D[0:N] */
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unsigned int swap_color_bytes: 1; /*!< Swap adjacent two color bytes */
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unsigned int pclk_active_neg: 1; /*!< The display will write data lines when there's a falling edge on WR signal (a.k.a the PCLK) */
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unsigned int pclk_idle_low: 1; /*!< The WR signal (a.k.a the PCLK) stays at low level in IDLE phase */
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} flags; /*!< Panel IO config flags */
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} esp_lcd_panel_io_i80_config_t;
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/**
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* @brief Create LCD panel IO, for Intel 8080 interface
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*
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* @param[in] bus Intel 8080 bus handle, created by `esp_lcd_new_i80_bus()`
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* @param[in] io_config IO configuration, for i80 interface
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* @param[out] ret_io Returned panel IO handle
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* @return
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* - ESP_ERR_INVALID_ARG if parameter is invalid
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* - ESP_ERR_NOT_SUPPORTED if some configuration can't be satisfied, e.g. pixel clock out of the range
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* - ESP_ERR_NO_MEM if out of memory
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* - ESP_OK on success
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*/
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esp_err_t esp_lcd_new_panel_io_i80(esp_lcd_i80_bus_handle_t bus, const esp_lcd_panel_io_i80_config_t *io_config, esp_lcd_panel_io_handle_t *ret_io);
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#endif // SOC_LCD_I80_SUPPORTED
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#ifdef __cplusplus
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}
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#endif
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