JC3636W518EN/10-OBD-Display-2024/_archive/lvgl9_broken/ST77916_LVGL_DEMO.ino

#include "scr_st77916.h"
#include "SD_MMC.h"

// https://randomnerdtutorials.com/esp32-client-server-wi-fi/
#include <WiFi.h>
#include <HTTPClient.h>

const char* ssid = "ESP32-Access-Point";
const char* password = "123456789";


void my_print(const char* buf) {
  Serial.println(buf);  // Print logs to the serial monitor
}

void display_animation() {
  lv_obj_t* img;

  img = lv_gif_create(lv_scr_act());

  Serial.print("Available Heap before: ");
  Serial.println(esp_get_free_heap_size());

  lv_mem_monitor_t mem_mon;
  lv_mem_monitor(&mem_mon);
  printf("Free memory: %d bytes\n", mem_mon.free_size);

  lv_fs_file_t file;
  if (lv_fs_open(&file, "A:wallpaper.gif", LV_FS_MODE_RD) == LV_FS_RES_OK) {
    lv_fs_close(&file);  // File exists, proceed with loading
    lv_gif_set_src(img, "A:wallpaper.gif");
    Serial.println("GIF Loaded Successfully");
  } else {
    Serial.println("Failed to Load GIF: File not found or inaccessible");
  }

  Serial.print("Available Heap after: ");
  Serial.println(esp_get_free_heap_size());

  lv_mem_monitor(&mem_mon);
  printf("Free memory: %d bytes\n", mem_mon.free_size);

  lv_obj_align(img, LV_ALIGN_CENTER, 0, 0);
}

lv_obj_t* label1;

void display_text() {
  // Create a style for the text
  static lv_style_t style_text;
  lv_style_init(&style_text);

  // Set the text color to white
  lv_style_set_text_color(&style_text, lv_color_white());

  // // Set the shadow color to black (this will simulate the outline)
  // lv_style_set_shadow_color(&style_text, lv_color_black());

  // // Set the shadow width to create the outline effect
  // lv_style_set_shadow_width(&style_text, 2);  // Adjust for desired outline thickness

  // // Set the shadow offset to 0 so it surrounds the text evenly
  // lv_style_set_shadow_ofs_x(&style_text, 0);
  // lv_style_set_shadow_ofs_y(&style_text, 0);

  label1 = lv_label_create(lv_scr_act());

  // Apply the style to the label
  lv_obj_add_style(label1, &style_text, LV_PART_MAIN);

  // lv_style_set_text_font(&label1, &Montserrat);       /*Set a larger font*/
  lv_label_set_long_mode(label1, LV_LABEL_LONG_WRAP); /*Break the long lines*/
  lv_label_set_text(label1, "0");
  lv_obj_set_width(label1, 150); /*Set smaller width to make the lines wrap*/
  lv_obj_set_style_text_align(label1, LV_TEXT_ALIGN_CENTER, 0);
  lv_obj_align(label1, LV_ALIGN_CENTER, 0, 0);
  // lv_obj_set_style_transform_zoom(label1, 256 * 2, 0);  // Zoom: 256 = 1x scale (default)
}

void connectToWifi() {
  WiFi.begin(ssid, password);
  Serial.println("Connecting");
  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
  }
  Serial.println("");
  Serial.print("Connected to WiFi network with IP Address: ");
  Serial.println(WiFi.localIP());
}

void setup() {
  delay(200);
  Serial.begin(115200);
  scr_lvgl_init();

  //lv_log_register_print_cb(my_print);  // Register print function for LVGL logs

  // Get the active screen (root object for the display)
  lv_obj_t* screen = lv_scr_act();

  // Set the background color of the entire screen to black
  lv_obj_set_style_bg_color(screen, lv_color_black(), 0);  // 0 is the part ID for the main part
  lv_obj_set_style_bg_opa(screen, LV_OPA_COVER, 0);        // Set opacity to fully opaque

  // Configure the SDMMC host
  SD_MMC.setPins(SD_MMC_CLK_PIN, SD_MMC_CMD_PIN, SD_MMC_D0_PIN, SD_MMC_D1_PIN, SD_MMC_D2_PIN, SD_MMC_D3_PIN);

  if (!SD_MMC.begin()) {
    Serial.println("Card Mount Failed");
    return;
  }

  uint8_t cardType = SD_MMC.cardType();
  if (cardType == CARD_NONE) {
    Serial.println("No SD card attached");
    return;
  }

  Serial.println("SD Card initialized successfully.");

  connectToWifi();

  // display_animation();

  display_text();
}

void loop() {
  lv_timer_handler();
  vTaskDelay(5);

  lv_mem_monitor_t mem_mon;
  lv_mem_monitor(&mem_mon);
  printf("Free memory: %d bytes\n", mem_mon.free_size);

  Serial.print("Available Heap: ");
  Serial.println(esp_get_free_heap_size());


  if (WiFi.status() == WL_CONNECTED) {
    String speed = httpGETRequest("http://192.168.4.1/speed");

    Serial.print("Speed: ");
    Serial.println(speed);

    lv_label_set_text(label1, speed.c_str());
  } else {
    Serial.println("WiFi Disconnected");
    connectToWifi();
  }
}


String httpGETRequest(const char* serverName) {
  WiFiClient client;
  HTTPClient http;

  // Your Domain name with URL path or IP address with path
  http.begin(client, serverName);

  // Send HTTP POST request
  int httpResponseCode = http.GET();

  String payload = "--";

  if (httpResponseCode > 0) {
    Serial.print("HTTP Response code: ");
    Serial.println(httpResponseCode);
    payload = http.getString();
  } else {
    Serial.print("Error code: ");
    Serial.println(httpResponseCode);
  }
  // Free resources
  http.end();

  return payload;
}