Update ESP32cam-demo.ino

modified for esp32 board manager v3

ESP32cam-demo.ino

@@ -3,7 +3,7 @@
 *                         ESP32Cam development board demo sketch using Arduino IDE or PlatformIO
 *                                    Github: https://github.com/alanesq/ESP32Cam-demo
 *
-*                                Tested with ESP32 board manager version  2.0.14
+*                                Tested with ESP32 board manager version  3.0.1
 *
 *     Starting point sketch for projects using the esp32cam development board with the following features
 *        web server with live video streaming and RGB data from camera demonstrated.
@@ -47,7 +47,6 @@
 
 #include "esp_camera.h"         // https://github.com/espressif/esp32-camera
 #include <Arduino.h>
-
 #include <esp_task_wdt.h>       // watchdog timer   - see: https://iotassistant.io/esp32/enable-hardware-watchdog-timer-esp32-arduino-ide/
 
 
@@ -109,7 +108,7 @@
 // ---------------------------------------------------------------
 
  char* stitle = "ESP32Cam-demo";                        // title of this sketch
- char* sversion = "02Nov23";                            // Sketch version
+ char* sversion = "12Jun24";                            // Sketch version
 
  #define WDT_TIMEOUT 60                                 // timeout of watchdog timer (seconds) 
 
@@ -223,7 +222,7 @@ WebServer server(80);           // serve web pages on port 80
  uint32_t lastStatus = millis();               // last time status light changed status (to flash all ok led)
  bool sdcardPresent;                           // flag if an sd card is detected
  int imageCounter;                             // image file name on sd card counter
- String spiffsFilename = "/image.jpg";     // image name to use when storing in spiffs
+ const String spiffsFilename = "/image.jpg";   // image name to use when storing in spiffs
  String ImageResDetails = "Unknown";           // image resolution info
 
 // OTA Stuff
@@ -331,7 +330,7 @@ void setup() {
 
  // SD Card - if one is detected set 'sdcardPresent' High
      if (!SD_MMC.begin("/sdcard", true)) {        // if loading sd card fails
-       // note: ('/sdcard", true)' = 1bit mode - see: https://www.reddit.com/r/esp32/comments/d71es9/a_breakdown_of_my_experience_trying_to_talk_to_an/
+       // note: ('/sdcard", true)' = 1bit mode - see: https://dr-mntn.net/2021/02/using-the-sd-card-in-1-bit-mode-on-the-esp32-cam-from-ai-thinker
        if (serialDebug) Serial.println("No SD Card detected");
        sdcardPresent = 0;                        // flag no sd card available
      } else {
@@ -388,7 +387,7 @@ void setup() {
 
 setupFlashPWM();    // configure PWM for the illumination LED
 
- // ESP32 Watchdog timer -    Note: esp32 board manager v3.x.x requires different code
+// ESP32 Watchdog timer -    Note: esp32 board manager v3.x.x requires different code
   #if defined ESP32
     esp_task_wdt_deinit();                  // ensure a watchdog is not already configured
     #if defined(ESP_ARDUINO_VERSION_MAJOR) && ESP_ARDUINO_VERSION_MAJOR == 3
@@ -597,11 +596,20 @@ bool cameraImageSettings() {
 // ----------------------------------------------------------------
 //       set up PWM for the illumination LED (flash)
 // ----------------------------------------------------------------
-// note: I am not sure PWM is very reliable on the esp32cam - requires more testing
+// notes: I am not sure PWM is very reliable on the esp32cam - requires more testing
+//        esp32 board manager v 3 requires different commands - jun24
+
 void setupFlashPWM() {
+      #if defined (ESP_ARDUINO_VERSION_MAJOR) && ESP_ARDUINO_VERSION_MAJOR == 3
+        // board manager v3
+          ledcAttach(ledChannel, ledFreq, ledRresolution);
+          brightLed(brightLEDbrightness);        
+      #else
+        // board manager pre v3
           ledcSetup(ledChannel, ledFreq, ledRresolution);
           ledcAttachPin(brightLED, ledChannel);
           brightLed(brightLEDbrightness);
+      #endif
 }
 
 // change illumination LED brightness