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/*
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* SPDX-FileCopyrightText: 2025 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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#include "hw_init.h"
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#if HW_USE_ENCODER
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#include <stdbool.h>
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#include "esp_log.h"
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#include "iot_knob.h"
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#include "iot_button.h"
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#include "button_gpio.h"
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#define HW_ENCODER_A (GPIO_NUM_10)
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#define HW_ENCODER_B (GPIO_NUM_6)
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#define HW_ENCODER_ENTER (GPIO_NUM_9)
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static const char *TAG = "hw_knob_init";
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static const knob_config_t hw_knob_encoder_config = {
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.default_direction = 0,
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.gpio_encoder_a = HW_ENCODER_A,
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.gpio_encoder_b = HW_ENCODER_B,
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.enable_power_save = false,
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};
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static button_handle_t s_encoder_button_handle = NULL;
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const knob_config_t *hw_knob_get_config(void)
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{
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return &hw_knob_encoder_config;
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}
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button_handle_t hw_knob_get_button(void)
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{
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if (s_encoder_button_handle == NULL) {
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ESP_LOGI(TAG, "Initializing encoder button on GPIO %d", HW_ENCODER_ENTER);
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const button_config_t btn_cfg = {
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.long_press_time = 0,
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.short_press_time = 0,
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};
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const button_gpio_config_t btn_gpio_cfg = {
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.gpio_num = HW_ENCODER_ENTER,
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.active_level = 0,
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.enable_power_save = false,
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.disable_pull = false,
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};
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esp_err_t ret = iot_button_new_gpio_device(&btn_cfg, &btn_gpio_cfg, &s_encoder_button_handle);
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if (ret != ESP_OK || s_encoder_button_handle == NULL) {
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ESP_LOGE(TAG, "Failed to create encoder button: %d", ret);
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return NULL;
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}
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ESP_LOGI(TAG, "Encoder button initialized successfully");
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}
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return s_encoder_button_handle;
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}
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#endif
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/*
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* SPDX-FileCopyrightText: 2025 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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#include "driver/i2c_master.h"
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#include <stdbool.h>
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#include "esp_log.h"
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#include "hw_init.h"
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#include "input/touch_rotation_helper.h"
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#if HW_USE_TOUCH
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#if CONFIG_EXAMPLE_LCD_INTERFACE_RGB
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#include "esp_lcd_touch_gt1151.h"
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#define HW_LCD_TOUCH_RST (GPIO_NUM_NC)
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#define HW_LCD_TOUCH_INT (GPIO_NUM_NC)
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#define HW_I2C_SDA (GPIO_NUM_47)
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#define HW_I2C_SCL (GPIO_NUM_48)
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#define TOUCH_CONTROLLER_NAME "GT1151"
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#define TOUCH_ROTATION_TYPE TOUCH_ROTATION_STANDARD
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#define TOUCH_CONTROLLER_TYPE_GT1151 1
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#elif CONFIG_EXAMPLE_LCD_INTERFACE_MIPI_DSI
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#include "esp_lcd_touch_gt911.h"
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#define HW_LCD_TOUCH_RST (GPIO_NUM_NC)
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#define HW_LCD_TOUCH_INT (GPIO_NUM_NC)
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#define HW_I2C_SDA (GPIO_NUM_7)
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#define HW_I2C_SCL (GPIO_NUM_8)
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#define TOUCH_CONTROLLER_NAME "GT911"
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#define TOUCH_ROTATION_TYPE TOUCH_ROTATION_MIPI_DSI
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#define TOUCH_CONTROLLER_TYPE_GT911 1
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#elif CONFIG_EXAMPLE_LCD_INTERFACE_QSPI
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#include "esp_lcd_touch_cst816s.h"
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#define HW_LCD_TOUCH_RST (GPIO_NUM_NC)
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#define HW_LCD_TOUCH_INT (GPIO_NUM_10)
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#define HW_I2C_SDA (GPIO_NUM_2)
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#define HW_I2C_SCL (GPIO_NUM_1)
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#define TOUCH_CONTROLLER_NAME "CST816S"
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#define TOUCH_ROTATION_TYPE TOUCH_ROTATION_STANDARD
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#define TOUCH_CONTROLLER_TYPE_CST816S 1
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#elif CONFIG_EXAMPLE_LCD_INTERFACE_SPI_WITH_PSRAM
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#include "esp_lcd_touch_gt911.h"
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#define HW_LCD_TOUCH_RST (GPIO_NUM_NC)
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#define HW_LCD_TOUCH_INT (GPIO_NUM_3)
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#define HW_I2C_SDA (GPIO_NUM_8)
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#define HW_I2C_SCL (GPIO_NUM_18)
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#define TOUCH_CONTROLLER_NAME "GT911"
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#define TOUCH_ROTATION_TYPE TOUCH_ROTATION_STANDARD
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#define TOUCH_CONTROLLER_TYPE_GT911 1
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#else
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#include "esp_lcd_touch_gt911.h"
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#define HW_LCD_TOUCH_RST (GPIO_NUM_NC)
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#define HW_LCD_TOUCH_INT (GPIO_NUM_NC)
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#define HW_I2C_SDA (GPIO_NUM_7)
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#define HW_I2C_SCL (GPIO_NUM_8)
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#define TOUCH_CONTROLLER_NAME "GT911"
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#define TOUCH_ROTATION_TYPE TOUCH_ROTATION_STANDARD
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#define TOUCH_CONTROLLER_TYPE_GT911 1
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#endif
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#define HW_I2C_NUM (I2C_NUM_0)
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#define HW_I2C_CLK_SPEED_HZ (400000)
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static const char *TAG = "hw_touch_init";
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static i2c_master_bus_handle_t s_touch_i2c_bus = NULL;
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static esp_err_t hw_touch_i2c_init(void)
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{
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if (s_touch_i2c_bus) {
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return ESP_OK;
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}
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i2c_master_bus_config_t i2c_bus_conf = {
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.clk_source = I2C_CLK_SRC_DEFAULT,
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.sda_io_num = HW_I2C_SDA,
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.scl_io_num = HW_I2C_SCL,
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.i2c_port = HW_I2C_NUM,
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};
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ESP_ERROR_CHECK(i2c_new_master_bus(&i2c_bus_conf, &s_touch_i2c_bus));
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return ESP_OK;
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}
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esp_err_t hw_touch_init(esp_lcd_touch_handle_t *ret_touch, esp_lv_adapter_rotation_t rotation)
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{
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ESP_LOGI(TAG, "Initializing touch controller (%s)", TOUCH_CONTROLLER_NAME);
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ESP_ERROR_CHECK(hw_touch_i2c_init());
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bool swap_xy = false;
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bool mirror_x = false;
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bool mirror_y = false;
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touch_get_rotation_flags(TOUCH_ROTATION_TYPE, rotation, &swap_xy, &mirror_x, &mirror_y);
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const esp_lcd_touch_config_t tp_cfg = {
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.x_max = HW_LCD_H_RES,
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.y_max = HW_LCD_V_RES,
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.rst_gpio_num = HW_LCD_TOUCH_RST,
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.int_gpio_num = HW_LCD_TOUCH_INT,
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.levels = {
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.reset = 0,
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.interrupt = 0,
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},
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.flags = {
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.swap_xy = swap_xy,
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.mirror_x = mirror_x,
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.mirror_y = mirror_y,
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},
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};
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esp_lcd_panel_io_handle_t tp_io_handle = NULL;
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/* Initialize touch controller based on type */
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#if defined(TOUCH_CONTROLLER_TYPE_GT1151)
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esp_lcd_panel_io_i2c_config_t tp_io_config = ESP_LCD_TOUCH_IO_I2C_GT1151_CONFIG();
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tp_io_config.scl_speed_hz = HW_I2C_CLK_SPEED_HZ;
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ESP_ERROR_CHECK(esp_lcd_new_panel_io_i2c(s_touch_i2c_bus, &tp_io_config, &tp_io_handle));
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return esp_lcd_touch_new_i2c_gt1151(tp_io_handle, &tp_cfg, ret_touch);
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#elif defined(TOUCH_CONTROLLER_TYPE_CST816S)
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esp_lcd_panel_io_i2c_config_t tp_io_config = ESP_LCD_TOUCH_IO_I2C_CST816S_CONFIG();
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tp_io_config.scl_speed_hz = HW_I2C_CLK_SPEED_HZ;
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ESP_ERROR_CHECK(esp_lcd_new_panel_io_i2c(s_touch_i2c_bus, &tp_io_config, &tp_io_handle));
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return esp_lcd_touch_new_i2c_cst816s(tp_io_handle, &tp_cfg, ret_touch);
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#elif defined(TOUCH_CONTROLLER_TYPE_GT911)
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esp_lcd_panel_io_i2c_config_t tp_io_config = ESP_LCD_TOUCH_IO_I2C_GT911_CONFIG();
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tp_io_config.scl_speed_hz = HW_I2C_CLK_SPEED_HZ;
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ESP_ERROR_CHECK(esp_lcd_new_panel_io_i2c(s_touch_i2c_bus, &tp_io_config, &tp_io_handle));
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return esp_lcd_touch_new_i2c_gt911(tp_io_handle, &tp_cfg, ret_touch);
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#else
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#error "No touch controller type defined"
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#endif
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}
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#endif
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@@ -0,0 +1,78 @@
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/*
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* SPDX-FileCopyrightText: 2025 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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#include "touch_rotation_helper.h"
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void touch_get_rotation_flags(touch_rotation_type_t type, esp_lv_adapter_rotation_t rotation,
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bool *swap_xy, bool *mirror_x, bool *mirror_y)
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{
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bool swap = false;
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bool x_mirror, y_mirror;
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if (type == TOUCH_ROTATION_MIPI_DSI) {
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x_mirror = true;
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y_mirror = true;
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switch (rotation) {
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case ESP_LV_ADAPTER_ROTATE_90:
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swap = true;
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x_mirror = false;
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y_mirror = true;
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break;
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case ESP_LV_ADAPTER_ROTATE_180:
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swap = false;
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x_mirror = false;
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y_mirror = false;
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break;
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case ESP_LV_ADAPTER_ROTATE_270:
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swap = true;
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x_mirror = true;
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y_mirror = false;
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break;
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case ESP_LV_ADAPTER_ROTATE_0:
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default:
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swap = false;
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x_mirror = true;
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y_mirror = true;
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break;
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}
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} else {
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x_mirror = false;
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y_mirror = false;
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switch (rotation) {
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case ESP_LV_ADAPTER_ROTATE_90:
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swap = true;
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x_mirror = true;
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y_mirror = false;
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break;
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case ESP_LV_ADAPTER_ROTATE_180:
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swap = false;
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x_mirror = true;
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y_mirror = true;
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break;
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case ESP_LV_ADAPTER_ROTATE_270:
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swap = true;
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x_mirror = false;
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y_mirror = true;
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break;
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case ESP_LV_ADAPTER_ROTATE_0:
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default:
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swap = false;
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x_mirror = false;
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y_mirror = false;
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break;
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}
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}
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if (swap_xy) {
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*swap_xy = swap;
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}
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if (mirror_x) {
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*mirror_x = x_mirror;
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}
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if (mirror_y) {
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*mirror_y = y_mirror;
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}
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}
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@@ -0,0 +1,26 @@
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/*
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* SPDX-FileCopyrightText: 2025 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_lv_adapter_display.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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typedef enum {
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TOUCH_ROTATION_STANDARD,
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TOUCH_ROTATION_MIPI_DSI,
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} touch_rotation_type_t;
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void touch_get_rotation_flags(touch_rotation_type_t type, esp_lv_adapter_rotation_t rotation,
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bool *swap_xy, bool *mirror_x, bool *mirror_y);
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#ifdef __cplusplus
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}
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#endif
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