68 lines
2.2 KiB
C
68 lines
2.2 KiB
C
#include "config.h"
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#include "driver/i2c.h"
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#include "esp_err.h"
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#include "esp_lcd_touch_gt911.h"
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#include "esp_log.h"
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#include "lv_api_map.h"
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#define TAG "waveshare_s3_touch_i2c"
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static esp_lcd_touch_handle_t touch_init_internal() {
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static esp_lcd_panel_io_handle_t tp_io_handle = NULL;
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static esp_lcd_panel_io_i2c_config_t tp_io_config = ESP_LCD_TOUCH_IO_I2C_GT911_CONFIG();
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ESP_LOGI(TAG, "Initialize touch IO");
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/* Touch IO handle */
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ESP_ERROR_CHECK(esp_lcd_new_panel_io_i2c((esp_lcd_i2c_bus_handle_t)WAVESHARE_TOUCH_I2C_PORT, &tp_io_config, &tp_io_handle));
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esp_lcd_touch_config_t tp_cfg = {
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.x_max = WAVESHARE_LCD_VER_RES,
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.y_max = WAVESHARE_LCD_HOR_RES,
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.rst_gpio_num = -1,
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.int_gpio_num = -1,
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.flags = {
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.swap_xy = 0,
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.mirror_x = 0,
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.mirror_y = 0,
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},
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};
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/* Initialize touch */
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ESP_LOGI(TAG, "Initialize touch controller GT911");
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esp_lcd_touch_handle_t tp = NULL;
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ESP_ERROR_CHECK(esp_lcd_touch_new_i2c_gt911(tp_io_handle, &tp_cfg, &tp));
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return tp;
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}
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static void touch_callback(lv_indev_drv_t* drv, lv_indev_data_t* data) {
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uint16_t touchpad_x[1] = {0};
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uint16_t touchpad_y[1] = {0};
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uint8_t touchpad_cnt = 0;
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/* Read touch controller data */
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esp_lcd_touch_read_data(drv->user_data);
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/* Get coordinates */
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bool touchpad_pressed = esp_lcd_touch_get_coordinates(drv->user_data, touchpad_x, touchpad_y, NULL, &touchpad_cnt, 1);
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if (touchpad_pressed && touchpad_cnt > 0) {
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data->point.x = touchpad_x[0];
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data->point.y = touchpad_y[0];
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data->state = LV_INDEV_STATE_PR;
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} else {
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data->state = LV_INDEV_STATE_REL;
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}
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}
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void ws3t_touch_init(lv_disp_t* display) {
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esp_lcd_touch_handle_t touch_handle = touch_init_internal();
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ESP_LOGI(TAG, "Register display indev to LVGL");
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static lv_indev_drv_t indev_drv;
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lv_indev_drv_init(&indev_drv);
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indev_drv.type = LV_INDEV_TYPE_POINTER;
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indev_drv.disp = display;
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indev_drv.read_cb = &touch_callback;
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indev_drv.user_data = touch_handle;
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lv_indev_drv_register(&indev_drv); // TODO: store result for deinit purposes
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}
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