ESP 43 inch Display slow

jdebruyn

Hi I have a 43 Display. The program work correctly but very slow. Sometimes it take 6 seconds to output a command. I send commands to 3 esp32's via ESP-now.
What did I do wrong. I spent a lot of time trying to speed it up by removing functions but only make it worse. Can you please suggest a fix please.

Sun

Hello, here are some optimization suggestions:

Modification suggestion 1:

Replace the delay function with the FreeRTOS time function.

void loop() {
lv_timer_handler(); // Handle LVGL tasks
vTaskDelay(5 / portTICK_PERIOD_MS); // Non-blocking delay
sendDataToAll(); // Send data to all devices

// Process the slider value and update the label
updateSliders();
}

Modification suggestion 2:

Reduce the frequency of reading the DHT22 sensor to avoid reading it in every loop.

unsigned long lastDHTReadTime = 0;
const unsigned long dhtInterval = 2000; // Read every 2 seconds

void loop() {
lv_timer_handler(); // Handle LVGL tasks
vTaskDelay(5 / portTICK_PERIOD_MS); // Non-blocking delay

// Read DHT22 sensor every 2 seconds
if (millis() - lastDHTReadTime > dhtInterval) {
temp = dht.readTemperature();
humid = dht.readHumidity();
lastDHTReadTime = millis();
}

sendDataToAll();
updateSliders();
}

Hope these can help you.