espressif/esp_lcd_touch_stmpe610

uploaded 3 months ago

# ESP LCD Touch STMPE610 Controller [](https://components.espressif.com/components/espressif/esp_lcd_touch_stmpe610) Implementation of the STMPE610 touch controller with esp_lcd_touch component. | Touch controller | Communication interface | Component name | Link to datasheet | | :--------------: | :---------------------: | :------------: | :---------------: | | STMPE610 | SPI[^1] | esp_lcd_touch_stmpe610 | [DOC](https://www.st.com/en/touch-and-display-controllers/stmpe610.html#documentation) | [^1]: **NOTE:** The STMPE610 controller can work via I2C too, but this feature is not implemented in this component! ## Add to project Packages from this repository are uploaded to [Espressif's component service](https://components.espressif.com/). You can add them to your project via `idf.py add-dependancy`, e.g. ``` idf.py add-dependency esp_lcd_touch_stmpe610==1.0.0 ``` Alternatively, you can create `idf_component.yml`. More is in [Espressif's documentation](https://docs.espressif.com/projects/esp-idf/en/latest/esp32/api-guides/tools/idf-component-manager.html). ## Example use Initialization of the touch component. ``` esp_lcd_panel_io_handle_t tp_io_handle = NULL; esp_lcd_panel_io_spi_config_t tp_io_config = ESP_LCD_TOUCH_IO_SPI_STMPE610_CONFIG(EXAMPLE_PIN_NUM_TOUCH_CS); ESP_ERROR_CHECK(esp_lcd_new_panel_io_spi((esp_lcd_spi_bus_handle_t)SPI2_HOST, &tp_io_config, &tp_io_handle)); esp_lcd_touch_config_t tp_cfg = { .x_max = CONFIG_LCD_HRES, .y_max = CONFIG_LCD_VRES, .rst_gpio_num = -1, .int_gpio_num = -1, .flags = { .swap_xy = 0, .mirror_x = 0, .mirror_y = 0, }, }; ESP_LOGI(TAG, "Initialize touch controller STMPE610"); ESP_ERROR_CHECK(esp_lcd_touch_new_spi_stmpe610(tp_io_handle, &tp_cfg, &tp)); ``` Read data from the touch controller and store it in RAM memory. It should be called regularly in poll. ``` esp_lcd_touch_read_data(tp); ``` Get one X and Y coordinates with strength of touch. ``` uint16_t touch_x[1]; uint16_t touch_y[1]; uint16_t touch_strength[1]; uint8_t touch_cnt = 0; bool touchpad_pressed = esp_lcd_touch_get_coordinates(tp, touch_x, touch_y, touch_strength, &touch_cnt, 1); ```