now also works with PlatformIO

esp32cam-demo.ino

@@ -1,6 +1,6 @@
  /*******************************************************************************************************************
  *
- *                                 ESP32Cam development board demo sketch using Arduino IDE
+ *                         ESP32Cam development board demo sketch using Arduino IDE or PlatformIO
  *                                    Github: https://github.com/alanesq/ESP32Cam-demo
  *
  *                                     Tested with ESP32 board manager version  1.0.6
@@ -42,14 +42,6 @@
   #error This sketch is only for an ESP32Cam module
 #endif
 
-#include "esp_camera.h"       // https://github.com/espressif/esp32-camera
-// #include "camera_pins.h"
-
-
-// ******************************************************************************************************************
-
-
-
 
 //   ---------------------------------------------------------------------------------------------------------
 
@@ -65,6 +57,37 @@
 //   ---------------------------------------------------------------------------------------------------------
 
 
+#include <Arduino.h>            // required by PlatformIO
+#include "esp_camera.h"         // https://github.com/espressif/esp32-camera
+// #include "camera_pins.h"
+#include <WiFi.h>
+#include <WebServer.h>
+#include <HTTPClient.h>       // used by requestWebPage()
+#include "driver/ledc.h"      // used to configure pwm on illumination led
+
+// spiffs used to store images without an sd card
+  #include <SPIFFS.h>
+  #include <FS.h>             // gives file access on spiffs
+
+
+// forward declarations (required by PlatformIO)
+  bool initialiseCamera();
+  bool cameraImageSettings();
+  String localTime();
+  void flashLED(int reps);
+  void showError(int errorNo);
+  byte storeImage();
+  void handleRoot();
+  void handlePhoto();
+  bool handleImg();
+  void handleNotFound();
+  void readRGBImage();
+  bool getNTPtime(int sec);
+  void handleStream();
+  String requestWebPage(String ip, String page, int port, int maxChars, String cuttoffText);
+  void handleTest();
+  void brightLed(byte ledBrightness);
+  void MessageRGB(WiFiClient &client, String theText);
 
 
 // ---------------------------------------------------------------
@@ -72,7 +95,7 @@
 // ---------------------------------------------------------------
 
   const char* stitle = "ESP32Cam-demo";                  // title of this sketch
-  const char* sversion = "08Oct21";                      // Sketch version
+  const char* sversion = "21Nov21";                      // Sketch version
 
   bool sendRGBfile = 0;                                  // if set '/rgb' will send the rgb data as a file rather than display some on a HTML page
 
@@ -141,15 +164,6 @@
 // ******************************************************************************************************************
 
 
-#include <WiFi.h>
-#include <WebServer.h>
-#include <HTTPClient.h>       // used by requestWebPage()
-#include "driver/ledc.h"      // used to configure pwm on illumination led
-
-// spiffs used to store images without an sd card
-  #include <SPIFFS.h>
-  #include <FS.h>             // gives file access on spiffs
-
 WebServer server(80);                       // serve web pages on port 80
 
 // Used to disable brownout detection
@@ -1036,9 +1050,9 @@ void readRGBImage() {
     delay(3);
     client.stop();
 
-  // finished with the data so free up the space used in psram 
+  // finished with the data so free up the memory space used in psram
-    esp_camera_fb_return(fb);
+    esp_camera_fb_return(fb);   // camera frame buffer
-    heap_caps_free(ptrVal);
+    heap_caps_free(ptrVal);     // rgb data
 
 }  // readRGBImage
 
@@ -1047,7 +1061,7 @@ void readRGBImage() {
 // send line of text to both serial port and web page
 void MessageRGB(WiFiClient &client, String theText) {
       if (!sendRGBfile) client.print(theText + "<br>\n");
-      if (serialDebug || theText.indexOf('error') > 0) Serial.println(theText);      
+      if (serialDebug || theText.indexOf("error") > 0) Serial.println(theText);
 }
 
 
@@ -1145,15 +1159,20 @@ void handleStream(){
 // ----------------------------------------------------------------
 //                        request a web page
 // ----------------------------------------------------------------
-//     parameters = ip address, page to request, port to use (usually 80), maximum chars to receive, ignore all in reply before this text 
+//   @param    ip           ip address
-//          e.g. String q = requestWebPage("192.168.1.166","/log",80,600,"");
+//   @param    page         web page to request
+//   @param    port         ip port to use (usually 80)
+//   @param    maxChars     maximum number of chars to receive
+//   @param    cuttoffText  ignore all in reply before this text
+//   @return   the reply as a string
+//   Example usage: requestWebPage("192.168.1.166", "/log", 80, 600, "");
 
 String requestWebPage(String ip, String page, int port, int maxChars, String cuttoffText = ""){
 
-  int maxWaitTime = 3000;                 // max time to wait for reply (ms)
+  uint32_t maxWaitTime = 3000;            // max time to wait for reply (ms)
 
   char received[maxChars + 1];            // temp store for incoming character data
-  int received_counter = 0;               // number of characters which have been received
+  int received_counter = 0;               // counter of number of characters which have been received
 
   if (!page.startsWith("/")) page = "/" + page;     // make sure page begins with "/"
 
@@ -1173,23 +1192,24 @@ String requestWebPage(String ip, String page, int port, int maxChars, String cut
       if (serialDebug) Serial.println("Connected to host - sending request...");
 
     // send request - A basic request looks something like: "GET /index.html HTTP/1.1\r\nHost: 192.168.0.4:8085\r\n\r\n"
-      client.print("GET " + page + " HTTP/1.1\r\n" +
+      client.println("GET " + page + " HTTP/1.1 ");
-                   "Host: " + ip + "\r\n" + 
+      client.println("Host: " + ip );
-                   "Connection: close\r\n\r\n");
+      client.println("User-Agent: arduino-ethernet");
+      client.println("Connection: close");
+      client.println();    // needed to end HTTP header
 
       if (serialDebug) Serial.println("Request sent - waiting for reply...");
 
     // Wait for a response
       uint32_t ttimer = millis();
-      while ( !client.available() && (uint32_t)(millis() - ttimer) < maxWaitTime ) {
+      while ( client.connected() && !client.available() && (uint32_t)(millis() - ttimer) < maxWaitTime ) {
         delay(10);
       }
+      if ( ((uint32_t)(millis() - ttimer) > maxWaitTime ) && serialDebug) Serial.println("-Timed out");
 
     // read the response
-      while ( client.available() && received_counter < maxChars ) {
+      while ( client.connected() && client.available() && received_counter < maxChars ) {
-        #if defined ESP8266
+        delay(4);
-          delay(2);                          // it just reads 255s on esp8266 if this delay is not included
-        #endif        
         received[received_counter] = char(client.read());     // read one character
         received_counter+=1;
       }
@@ -1215,7 +1235,8 @@ String requestWebPage(String ip, String page, int port, int maxChars, String cut
       }
 
   return received;        // return the full reply text
-}
+
+}  // requestWebPage
 
 
 

platformio.ini

@@ -0,0 +1,14 @@
+; PlatformIO Project Configuration File
+;
+;   Build options: build flags, source filter
+;   Upload options: custom upload port, speed and extra flags
+;   Library options: dependencies, extra library storages
+;   Advanced options: extra scripting
+;
+; Please visit documentation for the other options and examples
+; https://docs.platformio.org/page/projectconf.html
+
+[env:esp32cam]
+platform = espressif32
+board = esp32cam
+framework = arduino