/* * SPDX-FileCopyrightText: 2021 Espressif Systems (Shanghai) CO LTD * * SPDX-License-Identifier: Apache-2.0 */ #pragma once #include #include "esp_err.h" #include "esp_lcd_types.h" #include "soc/soc_caps.h" #ifdef __cplusplus extern "C" { #endif typedef void *esp_lcd_spi_bus_handle_t; /*!< Type of LCD SPI bus handle */ typedef void *esp_lcd_i2c_bus_handle_t; /*!< Type of LCD I2C bus handle */ typedef struct esp_lcd_i80_bus_t *esp_lcd_i80_bus_handle_t; /*!< Type of LCD intel 8080 bus handle */ /** * @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 tranfer 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 * @param[in] lcd_cmd_bits Length of LCD command, in bits (e.g. 8 bits or 16 bits) * @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, int lcd_cmd_bits, 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 * @param[in] lcd_cmd_bits Length of LCD command, in bits (e.g. 8 bits or 16 bits) * @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, int lcd_cmd_bits, const void *color, size_t color_size); /** * @brief Destory 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 Panel IO configuration structure, for SPI interface */ typedef struct { int cs_gpio_num; /*!< GPIO used for CS line */ int dc_gpio_num; /*!< GPIO used to select the D/C line, set this to -1 if the D/C line not controlled by manually pulling high/low GPIO */ int spi_mode; /*!< Traditional SPI mode (0~3) */ unsigned int pclk_hz; /*!< Frequency of pixel clock */ size_t trans_queue_depth; /*!< Size of internal transaction queue */ bool (*on_color_trans_done)(esp_lcd_panel_io_handle_t panel_io, void *user_data, void *event_data); /*!< Callback, invoked when color data transfer has finished */ void *user_data; /*!< User private data, passed directly to on_trans_frame_done's user_data */ struct { unsigned int dc_as_cmd_phase: 1; /*!< D/C line value is encoded into SPI transaction command phase */ 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 */ } flags; } esp_lcd_panel_io_spi_config_t; /** * @brief Create LCD panel IO handle, for SPI interface * * @param[in] bus SPI bus handle * @param[in] io_config IO configuration, for SPI interface * @param[out] ret_io Returned IO handle * @return * - ESP_ERR_INVALID_ARG if parameter is invalid * - ESP_ERR_NO_MEM if out of memory * - ESP_OK on success */ 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); typedef struct { uint32_t dev_addr; /*!< I2C device address */ bool (*on_color_trans_done)(esp_lcd_panel_io_handle_t panel_io, void *user_data, void *event_data); /*!< Callback, invoked when color data transfer has finished */ void *user_data; /*!< User private data, passed directly to on_trans_frame_done's user_data */ size_t control_phase_bytes; /*!< I2C LCD panel will encode control information (e.g. D/C seclection) into control phase, in several bytes */ unsigned int dc_bit_offset; /*!< Offset of the D/C selection bit in control phase */ struct { 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 */ } flags; } esp_lcd_panel_io_i2c_config_t; /** * @brief Create LCD panel IO handle, for I2C interface * * @param[in] bus I2C bus handle * @param[in] io_config IO configuration, for I2C interface * @param[out] ret_io Returned IO handle * @return * - ESP_ERR_INVALID_ARG if parameter is invalid * - ESP_ERR_NO_MEM if out of memory * - ESP_OK on success */ 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); #if SOC_LCD_I80_SUPPORTED /** * @brief LCD Intel 8080 bus configuration structure */ typedef struct { int dc_gpio_num; /*!< GPIO used for D/C line */ int wr_gpio_num; /*!< GPIO used for WR line */ int data_gpio_nums[SOC_LCD_I80_BUS_WIDTH]; /*!< GPIOs used for data lines */ size_t data_width; /*!< Number of data lines, 8 or 16 */ size_t max_transfer_bytes; /*!< Maximum transfer size, this determines the length of internal DMA link */ } esp_lcd_i80_bus_config_t; /** * @brief Create Intel 8080 bus handle * * @param[in] bus_config Bus configuration * @param[out] ret_bus Returned bus handle * @return * - ESP_ERR_INVALID_ARG if parameter is invalid * - ESP_ERR_NO_MEM if out of memory * - ESP_ERR_NOT_FOUND if no free bus is available * - ESP_OK on success */ 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); /** * @brief Destory Intel 8080 bus handle * * @param[in] bus Intel 8080 bus handle, created by `esp_lcd_new_i80_bus()` * @return * - ESP_ERR_INVALID_ARG if parameter is invalid * - ESP_ERR_INVALID_STATE if there still be some device attached to the bus * - ESP_OK on success */ esp_err_t esp_lcd_del_i80_bus(esp_lcd_i80_bus_handle_t bus); /** * @brief Panel IO configuration structure, for intel 8080 interface */ typedef struct { int cs_gpio_num; /*!< GPIO used for CS line */ unsigned int pclk_hz; /*!< Frequency of pixel clock */ size_t trans_queue_depth; /*!< Transaction queue size, larger queue, higher throughput */ bool (*on_color_trans_done)(esp_lcd_panel_io_handle_t panel_io, void *user_data, void *event_data); /*!< Callback, invoked when color data was tranferred done */ void *user_data; /*!< User private data, passed directly to on_trans_done's user_data */ struct { unsigned int dc_idle_level: 1; /*!< Level of DC line in IDLE phase */ unsigned int dc_cmd_level: 1; /*!< Level of DC line in CMD phase */ unsigned int dc_dummy_level: 1; /*!< Level of DC line in DUMMY phase */ unsigned int dc_data_level: 1; /*!< Level of DC line in DATA phase */ } dc_levels; /*!< Each i80 device might have its own D/C control logic */ struct { unsigned int invert_cs: 1; /*!< Whether to invert the CS line */ unsigned int reverse_color_bits: 1; /*!< Reverse the data bits, D[N:0] -> D[0:N] */ unsigned int swap_color_bytes: 1; /*!< Swap adjacent two color bytes */ 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) */ unsigned int pclk_idle_low: 1; /*!< The WR signal (a.k.a the PCLK) stays at low level in IDLE phase */ } flags; } esp_lcd_panel_io_i80_config_t; /** * @brief Create LCD panel IO, for Intel 8080 interface * * @param[in] bus Intel 8080 bus handle, created by `esp_lcd_new_i80_bus()` * @param[in] io_config IO configuration, for i80 interface * @param[out] ret_io Returned panel IO handle * @return * - ESP_ERR_INVALID_ARG if parameter is invalid * - ESP_ERR_NOT_SUPPORTED if some configuration can't be satisfied, e.g. pixel clock out of the range * - ESP_ERR_NO_MEM if out of memory * - ESP_OK on success */ 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); #endif // SOC_LCD_I80_SUPPORTED #ifdef __cplusplus } #endif