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Added touchscreen, qwiic example
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‎examples/Inkplate6FLICK/Advanced/Communications/Qwiic/Qwiic.ino‎

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/**
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**************************************************
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*
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* @file Qwiic.ino
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* @brief Example demonstrating easyC/Qwiic (I2C) communication between Inkplate 6FLICK and
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* a Soldered BME280 or BME680 environmental sensor, using the LVGL library
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* for display rendering.
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*
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* This example reads temperature, humidity, and pressure data from a
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* Soldered BME280 sensor connected via the easyC interface and displays
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* it on the Inkplate 6FLICK e-paper screen using LVGL elements.
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*
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* Note: Both BME280 and BME680 sensors are supported by the same
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* Soldered BME280/BME680 library. In this example, the BME280 is used,
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* as defined in the code. The sensor communicates over easyC (I2C)
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* using the default 0x76 address.
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*
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* For setup instructions and more information about Inkplate 6FLICK, visit:
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* https://soldered.com/documentation/inkplate/6flick/overview/
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*
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* @hardware Inkplate 6FLICK (ESP32-based e-paper display)
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* @sensors Soldered BME280 (or BME680) via easyC connector
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* @library Soldered BME280/BME680 Gas Sensor Arduino Library
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* https://github.com/SolderedElectronics/Soldered-BME280-BME680-Gas-Sensor-Arduino-Library
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*
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* @authors Soldered
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* @date November 2025
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***************************************************/
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#include <Inkplate-LVGL.h>
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#include <BME280-SOLDERED.h> // Soldered BME280/BME680 library (easyC/I2C)
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// Inkplate in 1-bit mode (fast partial updates)
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Inkplate inkplate(INKPLATE_1BIT);
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BME280 bme280; // easyC/I2C (Soldered uses 0x76)
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// Optional temperature calibration offset
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const float TEMPERATURE_OFFSET = 0.0f;
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// UI elements
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static lv_obj_t *panel_data;
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static lv_obj_t *lbl_title;
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static lv_obj_t *lbl_temp;
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static lv_obj_t *lbl_hum;
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static lv_obj_t *lbl_press;
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static lv_obj_t *lbl_warn;
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// Refresh policy (do a FULL every ~20 partials)
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static int partialCount = 0;
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static const int FULL_REFRESH_EVERY = 20;
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// Helpers
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static inline int dispW() { auto *d = lv_display_get_default(); return lv_display_get_horizontal_resolution(d); }
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static inline int dispH() { auto *d = lv_display_get_default(); return lv_display_get_vertical_resolution(d); }
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static void make_opaque(lv_obj_t *obj) {
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lv_obj_set_style_bg_color(obj, lv_color_hex(0xFFFFFF), 0);
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lv_obj_set_style_bg_opa(obj, LV_OPA_COVER, 0);
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lv_obj_set_style_border_width(obj, 0, 0);
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}
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// Minimal LVGL UI (no GFX icons to keep it LVGL-only)
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static void ui_create() {
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lv_obj_set_style_bg_color(lv_screen_active(), lv_color_hex(0xFFFFFF), LV_PART_MAIN);
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lbl_title = lv_label_create(lv_screen_active());
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lv_label_set_text(lbl_title, "easyC • BME280");
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lv_obj_set_style_text_color(lbl_title, lv_color_hex(0x000000), 0);
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lv_obj_set_pos(lbl_title, 8, 8);
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make_opaque(lbl_title);
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panel_data = lv_obj_create(lv_screen_active());
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make_opaque(panel_data);
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lv_obj_set_style_pad_all(panel_data, 0, 0);
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lv_obj_set_style_border_width(panel_data, 0, 0);
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lv_obj_set_pos(panel_data, 0, 40);
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lv_obj_set_size(panel_data, dispW(), dispH() - 80);
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lbl_temp = lv_label_create(panel_data);
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lv_obj_set_style_text_color(lbl_temp, lv_color_hex(0x000000), 0);
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lv_obj_set_pos(lbl_temp, 24, 40);
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lbl_hum = lv_label_create(panel_data);
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lv_obj_set_style_text_color(lbl_hum, lv_color_hex(0x000000), 0);
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lv_obj_set_pos(lbl_hum, 24, 140);
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lbl_press = lv_label_create(panel_data);
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lv_obj_set_style_text_color(lbl_press, lv_color_hex(0x000000), 0);
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lv_obj_set_pos(lbl_press, 24, 240);
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lbl_warn = lv_label_create(panel_data); // shown only if sensor looks unresponsive
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lv_obj_set_style_text_color(lbl_warn, lv_color_hex(0x000000), 0);
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lv_obj_set_pos(lbl_warn, 24, 320);
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lv_label_set_text(lbl_warn, "");
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}
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static void update_readings() {
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// Read sensor
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float tC = bme280.readTemperature() + TEMPERATURE_OFFSET; // °C
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float hum = bme280.readHumidity() / 10.0f; // library returns x10
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float hPa = bme280.readPressure() * 10.0f; // hPa (original style)
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// Basic sanity check (some libs return 0 or extreme values if not connected)
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bool looks_bad = (hPa <= 0.0f) || (hum < 0.0f || hum > 100.0f) || (tC < -40.0f || tC > 85.0f);
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char bufT[32], bufH[32], bufP[32];
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snprintf(bufT, sizeof(bufT), "Temperature: %.1f *C", tC);
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snprintf(bufH, sizeof(bufH), "Humidity: %.0f %%", hum);
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snprintf(bufP, sizeof(bufP), "Pressure: %.0f hPa", hPa);
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lv_label_set_text(lbl_temp, bufT);
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lv_label_set_text(lbl_hum, bufH);
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lv_label_set_text(lbl_press, bufP);
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if (looks_bad) {
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lv_label_set_text(lbl_warn, "Warning: sensor readings look invalid.\nCheck easyC cable and sensor power.");
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} else {
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lv_label_set_text(lbl_warn, "");
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}
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}
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void setup() {
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Serial.begin(115200);
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// LVGL + Inkplate in PARTIAL mode
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inkplate.begin(LV_DISP_RENDER_MODE_PARTIAL);
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inkplate.selectDisplayMode(INKPLATE_1BIT);
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// Init BME280 (void return in this library)
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bme280.begin();
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ui_create();
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update_readings();
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// Initial FULL refresh
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lv_tick_inc(20);
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lv_timer_handler();
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inkplate.display();
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}
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void loop() {
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update_readings();
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lv_tick_inc(10);
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lv_timer_handler();
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if (partialCount >= FULL_REFRESH_EVERY) {
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inkplate.display(); // FULL
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partialCount = 0;
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} else {
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inkplate.partialUpdate();
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partialCount++;
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}
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delay(10000); // ~10 s between readings
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}

‎examples/Inkplate6FLICK/Basic/SimpleTouchscreen/SimpleTouchscreen.ino‎

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/**
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**************************************************
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*
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* @file SimpleTouchscreen.ino
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* @brief This example shows you how to use Inkplate 6 FLICK touchscreen.
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* Once the code is uploaded, try to touch the rectangles on the screen :)
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*
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* For info on how to quickly get started with Inkplate 6FLICK visit https://soldered.com/documentation/inkplate/6flick/overview/
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*
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* @authors Soldered
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* @date November 2025
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***************************************************/
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// Include the Inkplate LVGL Library
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#include <Inkplate-LVGL.h>
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// Create an instance of Inkplate display in 1-bit mode (change to INKPLATE_3BIT if you want grayscale)
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Inkplate inkplate(INKPLATE_1BIT);
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// Create an lvgl task which will tick the lvgl timer every 5 ms
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// and handle any animations needed
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void lvgl_task(void *arg)
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{
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for (;;)
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{
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lv_tick_inc(5);
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lv_timer_handler();
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vTaskDelay(pdMS_TO_TICKS(5));
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}
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}
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// Initialize global lvgl rectangle object
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static lv_obj_t *rect = NULL;
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// Touch detect flag
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bool isRectangleClicked = false;
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// Rectangle coordinates
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int x_position = 50;
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int y_position = 50;
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static void btn_event_cb(lv_event_t *e)
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{
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lv_event_code_t code = lv_event_get_code(e);
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if (code == LV_EVENT_CLICKED)
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{
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if (rect)
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{
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x_position += 100;
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y_position += 100;
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if (y_position < 660)
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{
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lv_obj_set_pos(rect, x_position, y_position);
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lv_obj_invalidate(rect);
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isRectangleClicked = true;
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}
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else
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{
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x_position = 50;
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y_position = 50;
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inkplate.clearDisplay();
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lv_obj_clean(lv_scr_act());
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lv_draw_initials();
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lv_obj_invalidate(lv_scr_act());
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for (int i = 0; i < 5; i++)
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{
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lv_timer_handler();
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delay(10);
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}
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inkplate.display();
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}
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}
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}
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}
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static void lv_draw_initials()
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{
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/* Create a black label, set its text and font and align it to the center */
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lv_obj_t *label = lv_label_create(lv_screen_active());
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lv_label_set_text(label, "Touch the rectangles on screen!");
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lv_obj_set_style_text_color(lv_screen_active(), lv_color_hex(0x000000), LV_PART_MAIN);
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lv_obj_set_style_text_font(label, &lv_font_montserrat_48, 0);
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lv_obj_align(label, LV_ALIGN_TOP_MID, 0, 0);
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/* Create a black rectangle */
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rect = lv_obj_create(lv_scr_act());
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lv_obj_set_style_bg_color(rect, lv_color_hex(0x000000), 0);
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lv_obj_set_size(rect, 100, 50);
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lv_obj_set_pos(rect, x_position, y_position);
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// Add event callback function
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lv_obj_add_event_cb(rect, btn_event_cb, LV_EVENT_ALL, NULL);
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}
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void setup()
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{
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Serial.begin(115200);
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Serial.println("Inkplate 6 FLICK Touchscreen Example.");
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inkplate.begin(LV_DISPLAY_RENDER_MODE_PARTIAL);
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if (inkplate.touchscreen.init(true))
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{
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Serial.println("Touchscreen initialized.");
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}
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else
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{
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Serial.println("Touchscreen initialization failed.");
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while (true);
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}
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// Create LVGL task on core 1 to run independently from the rest of the sketch
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xTaskCreatePinnedToCore(
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lvgl_task, // Function which will be pinned
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"lvgl_tick", // Symbolic name
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16000, // Stack depth
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nullptr, // No parameters
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2, // Priority
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nullptr, // No buffer, it will be allocated dynamically
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1 // core used
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);
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lv_draw_initials();
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// Force initial render
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for (int i = 0; i < 5; i++)
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{
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lv_timer_handler();
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delay(10);
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}
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// Display content from buffer
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inkplate.display();
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}
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void loop()
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{
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if (isRectangleClicked)
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{
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inkplate.partialUpdate(0, 1);
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isRectangleClicked = false;
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}
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}
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