In Spain, it's not working. A few days ago, the server was down for more than 16 hours.

Hi @teastain .
I don’t know how to program in C++, that’s why I have fun with the Uiflow blocks.
I am very grateful for your intention to help me and I will try to test the code, although modifying it will be my problem.
Thanks

Hello community,

I'm trying to integrate LVGL 9.3.0 with the touch screen on M5Stack CoreS3, but I'm facing an issue: touch events are not being registered correctly in LVGL, even though the touch screen works fine when tested using M5Stack's official example code.

📌 Software versions I'm using: ✅ M5Stack CoreS3 (ESP32-S3-based hardware) ✅ LVGL version: 9.3.0 ✅ M5Unified library version: Latest available version (checked via Arduino IDE) ✅ LovyanGFX library version: Latest available version ✅ Arduino IDE version: 1.8.19 ✅ ESP32 Board Support Package: Latest version installed via Board Manager

📌 What I’ve tested so far: ✅ The touch screen works correctly using CoreS3.Touch.getDetail(). ✅ LVGL is not detecting touches, suggesting a possible misconfiguration in lv_indev_t. ✅ I've implemented synchronization with CoreS3.update(), but LVGL still does not process touch events.

📜 Current code I'm using:

#include <M5CoreS3.h>
#include <lvgl.h>

// 🛠 Screen instance
M5GFX display;

// 🛠 Callback function for display update in LVGL
void flush_cb(lv_display_t *disp_drv, const lv_area_t *area, uint8_t *color_p) {
    display.pushImage(area->x1, area->y1, area->x2 - area->x1 + 1, area->y2 - area->y1 + 1, (uint16_t*)color_p);
    lv_display_flush_ready(disp_drv);
}

// 🛠 Touch event handling using CoreS3 and advanced debugging
void my_input_read(lv_indev_t *indev, lv_indev_data_t *data) {
    CoreS3.update();
    auto t = CoreS3.Touch.getDetail();

    data->point.x = t.x;
    data->point.y = t.y;

    Serial.print("📍 Touch state: "); Serial.println((int)t.state);
    Serial.print("📍 Coordinates → X: "); Serial.print(t.x);
    Serial.print(" Y: "); Serial.println(t.y);

    if (t.state == m5::touch_state_t::touch_begin || t.state == m5::touch_state_t::hold_begin || t.state == m5::touch_state_t::drag_begin) {
        data->state = LV_INDEV_STATE_PR;
        Serial.println("✅ LVGL has detected the touch!");
    } else {
        data->state = LV_INDEV_STATE_REL;
    }
}

// 🛠 Creating a test button in LVGL
void create_button(lv_obj_t *parent) {
    lv_obj_t *btn = lv_btn_create(parent);
    lv_obj_set_size(btn, 100, 50);
    lv_obj_align(btn, LV_ALIGN_CENTER, 0, 0);

    lv_obj_t *label = lv_label_create(btn);
    lv_label_set_text(label, "Press");
    lv_obj_center(label);

    lv_obj_add_flag(btn, LV_OBJ_FLAG_CLICKABLE);
}

// 🛠 System initial setup
void setup() {
    auto cfg = M5.config();
    CoreS3.begin(cfg);
    Serial.begin(115200);
    Serial.println("\n🚀 M5Stack CoreS3 initialized with LVGL 9.3.0 🚀\n");

    display.init();
    lv_init();
    display.begin();
    display.setColorDepth(16);

    static lv_display_t *disp_drv = lv_display_create(320, 240);
    lv_display_set_flush_cb(disp_drv, flush_cb);

    // 🚀 Dynamic memory allocation to optimize RAM usage
    static lv_color_t *buf1 = (lv_color_t*)malloc(320 * 50 * sizeof(lv_color_t));
    if (buf1 == NULL) {
        Serial.println("❌ Error: Failed to allocate memory.");
        return;
    }
    lv_display_set_buffers(disp_drv, buf1, NULL, 320 * 50 * sizeof(lv_color_t), LV_DISPLAY_RENDER_MODE_PARTIAL);

    // 🛠 Properly initialize the touch input handler in LVGL
    lv_indev_t *indev = lv_indev_create();
    lv_indev_set_type(indev, LV_INDEV_TYPE_POINTER);
    lv_indev_set_read_cb(indev, my_input_read);

    // 🛠 Create a test button in LVGL
    create_button(lv_scr_act());

    Serial.println("✅ LVGL initialized correctly, waiting for interaction...");
}

// 🛠 Main loop for touch updates and LVGL handling
void loop() {
    CoreS3.update();
    lv_timer_handler();
    delay(5);
}

💡 Has anyone successfully enabled touch detection in LVGL with M5Stack CoreS3? If you have any suggestions, insights, or working code examples, I’d really appreciate your help. 🙏

Thanks in advance for any assistance! 🚀 Let’s get this working! 💪🔥

@felmue Hello , Your code worked perfectly. I really appreciate the time and effort you put into helping me—it means a lot! Thank you!
Roberto

[link text](link url)Hello everyone,

I'm facing issues with both subscription and publishing in MQTT. When publishing, it does not allow me to send alphanumeric values. If I use a numeric string and then convert it to an integer, it works correctly, as shown in the following example:

MQTT publish topic "coreS3/state", "5", Qos 1

However, when I try to publish any variable, whether numeric or text, the system simply ignores the command without displaying errors. For example:

MQTT publish topic "coreS3/state", numeric or text variable, Qos 1

If instead of a variable I use a fixed string, the command executes without issues.

I have spent a lot of time trying to solve this, but I haven't found a clear answer. Has anyone faced a similar issue or has any suggestions on how to fix it?

I appreciate any help you can provide.

[C:\Users\faria\Downloads\MQTT_Relay_S3_BAD.m5f2]

Hi @teastain .
I don’t know how to program in C++, that’s why I have fun with the Uiflow blocks.
I am very grateful for your intention to help me and I will try to test the code, although modifying it will be my problem.
Thanks

Hi@neus-morla ,
If you have the device as it came from the factory, try this:

Download M5burner.
Log in.
In core, look for UIFlow_Fire; this will flash the updated firmware (this might be the problem).

I am working on a project that requires wireless communication between a StickC Plus and an M5Core Basic using the ESP-NOW protocol. I am new to this and would greatly appreciate it if someone could provide me with a simple example to establish this communication.

I have found some tutorials on ESP-NOW, but I would like to see a specific example for these devices. Any help or example code would be greatly appreciated.

In other tutorials, it is also happening.
I tried with Chrome and Edge browsers.
It would be great to be able to download a PDF with the class.

Hi @felmue
Friend, thank you very much for your interest in our problems.
Cheers.

Hi @cryptospok .
I’m glad you resolved it. I also experienced the frustration of not being able to solve the problems and seeing time pass without finding a way out. Fortunately, Felix was there to advise me and provide an example that I could adapt to my needs. Good luck with that project, and we’ll meet again around here.
Until next time,
Roberto.

Hi @Zoidberg ,I spent a lot of time trying to log in to Uiflow1, but I couldn’t find a solution.
Best regards,
Roberto