2024-07-02 Start

.gitignore

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+.pio
+.vscode/.browse.c_cpp.db*
+.vscode/c_cpp_properties.json
+.vscode/launch.json
+.vscode/ipch

.vscode/extensions.json

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+{
+    // See http://go.microsoft.com/fwlink/?LinkId=827846
+    // for the documentation about the extensions.json format
+    "recommendations": [
+        "platformio.platformio-ide"
+    ],
+    "unwantedRecommendations": [
+        "ms-vscode.cpptools-extension-pack"
+    ]
+}

include/README

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+
+This directory is intended for project header files.
+
+A header file is a file containing C declarations and macro definitions
+to be shared between several project source files. You request the use of a
+header file in your project source file (C, C++, etc) located in `src` folder
+by including it, with the C preprocessing directive `#include'.
+
+```src/main.c
+
+#include "header.h"
+
+int main (void)
+{
+ ...
+}
+```
+
+Including a header file produces the same results as copying the header file
+into each source file that needs it. Such copying would be time-consuming
+and error-prone. With a header file, the related declarations appear
+in only one place. If they need to be changed, they can be changed in one
+place, and programs that include the header file will automatically use the
+new version when next recompiled. The header file eliminates the labor of
+finding and changing all the copies as well as the risk that a failure to
+find one copy will result in inconsistencies within a program.
+
+In C, the usual convention is to give header files names that end with `.h'.
+It is most portable to use only letters, digits, dashes, and underscores in
+header file names, and at most one dot.
+
+Read more about using header files in official GCC documentation:
+
+* Include Syntax
+* Include Operation
+* Once-Only Headers
+* Computed Includes
+
+https://gcc.gnu.org/onlinedocs/cpp/Header-Files.html

lib/README

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+
+This directory is intended for project specific (private) libraries.
+PlatformIO will compile them to static libraries and link into executable file.
+
+The source code of each library should be placed in an own separate directory
+("lib/your_library_name/[here are source files]").
+
+For example, see a structure of the following two libraries `Foo` and `Bar`:
+
+|--lib
+|  |
+|  |--Bar
+|  |  |--docs
+|  |  |--examples
+|  |  |--src
+|  |     |- Bar.c
+|  |     |- Bar.h
+|  |  |- library.json (optional, custom build options, etc) https://docs.platformio.org/page/librarymanager/config.html
+|  |
+|  |--Foo
+|  |  |- Foo.c
+|  |  |- Foo.h
+|  |
+|  |- README --> THIS FILE
+|
+|- platformio.ini
+|--src
+   |- main.c
+
+and a contents of `src/main.c`:
+```
+#include <Foo.h>
+#include <Bar.h>
+
+int main (void)
+{
+  ...
+}
+
+```
+
+PlatformIO Library Dependency Finder will find automatically dependent
+libraries scanning project source files.
+
+More information about PlatformIO Library Dependency Finder
+- https://docs.platformio.org/page/librarymanager/ldf.html

platformio.ini

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+; 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
+upload_port = /dev/ttyUSB0
+monitor_port = /dev/ttyUSB0
+monitor_speed = 115200
+
+lib_deps =
+  # RECOMMENDED
+  # Accept new functionality in a backwards compatible manner and patches
+  espressif/esp32-camera @ ^2.0.0
+
+  # Accept only backwards compatible bug fixes
+  # (any version with the same major and minor versions, and an equal or greater patch version)
+  espressif/esp32-camera @ ~2.0.0
+
+  # The exact version
+  espressif/esp32-camera @ 2.0.0

src/main.cpp

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+/*********
+  Rui Santos
+  Complete project details at https://RandomNerdTutorials.com/esp32-cam-video-streaming-web-server-camera-home-assistant/
+  
+  IMPORTANT!!! 
+   - Select Board "AI Thinker ESP32-CAM"
+   - GPIO 0 must be connected to GND to upload a sketch
+   - After connecting GPIO 0 to GND, press the ESP32-CAM on-board RESET button to put your board in flashing mode
+  
+  Permission is hereby granted, free of charge, to any person obtaining a copy
+  of this software and associated documentation files.
+
+  The above copyright notice and this permission notice shall be included in all
+  copies or substantial portions of the Software.
+*********/
+
+#include "esp_camera.h"
+#include <WiFi.h>
+#include "esp_timer.h"
+#include "img_converters.h"
+#include "Arduino.h"
+#include "fb_gfx.h"
+#include "soc/soc.h" //disable brownout problems
+#include "soc/rtc_cntl_reg.h"  //disable brownout problems
+#include "esp_http_server.h"
+
+//Replace with your network credentials
+const char* ssid = "St.-Peters-Gasse";
+const char* password = "1952994784599317";
+
+IPAddress ip( 192, 168, 127, 230 );
+IPAddress gateway( 192, 168, 127, 1 );
+IPAddress subnet( 255, 255, 255, 0 );
+IPAddress dns(192, 168, 127, 1); // DNS-Server
+String hostname = "Kamera2";
+
+#define PART_BOUNDARY "123456789000000000000987654321"
+
+// This project was tested with the AI Thinker Model, M5STACK PSRAM Model and M5STACK WITHOUT PSRAM
+#define CAMERA_MODEL_AI_THINKER
+//#define CAMERA_MODEL_M5STACK_PSRAM
+//#define CAMERA_MODEL_M5STACK_WITHOUT_PSRAM
+
+// Not tested with this model
+//#define CAMERA_MODEL_WROVER_KIT
+
+#if defined(CAMERA_MODEL_WROVER_KIT)
+  #define PWDN_GPIO_NUM    -1
+  #define RESET_GPIO_NUM   -1
+  #define XCLK_GPIO_NUM    21
+  #define SIOD_GPIO_NUM    26
+  #define SIOC_GPIO_NUM    27
+  
+  #define Y9_GPIO_NUM      35
+  #define Y8_GPIO_NUM      34
+  #define Y7_GPIO_NUM      39
+  #define Y6_GPIO_NUM      36
+  #define Y5_GPIO_NUM      19
+  #define Y4_GPIO_NUM      18
+  #define Y3_GPIO_NUM       5
+  #define Y2_GPIO_NUM       4
+  #define VSYNC_GPIO_NUM   25
+  #define HREF_GPIO_NUM    23
+  #define PCLK_GPIO_NUM    22
+
+#elif defined(CAMERA_MODEL_M5STACK_PSRAM)
+  #define PWDN_GPIO_NUM     -1
+  #define RESET_GPIO_NUM    15
+  #define XCLK_GPIO_NUM     27
+  #define SIOD_GPIO_NUM     25
+  #define SIOC_GPIO_NUM     23
+  
+  #define Y9_GPIO_NUM       19
+  #define Y8_GPIO_NUM       36
+  #define Y7_GPIO_NUM       18
+  #define Y6_GPIO_NUM       39
+  #define Y5_GPIO_NUM        5
+  #define Y4_GPIO_NUM       34
+  #define Y3_GPIO_NUM       35
+  #define Y2_GPIO_NUM       32
+  #define VSYNC_GPIO_NUM    22
+  #define HREF_GPIO_NUM     26
+  #define PCLK_GPIO_NUM     21
+
+#elif defined(CAMERA_MODEL_M5STACK_WITHOUT_PSRAM)
+  #define PWDN_GPIO_NUM     -1
+  #define RESET_GPIO_NUM    15
+  #define XCLK_GPIO_NUM     27
+  #define SIOD_GPIO_NUM     25
+  #define SIOC_GPIO_NUM     23
+  
+  #define Y9_GPIO_NUM       19
+  #define Y8_GPIO_NUM       36
+  #define Y7_GPIO_NUM       18
+  #define Y6_GPIO_NUM       39
+  #define Y5_GPIO_NUM        5
+  #define Y4_GPIO_NUM       34
+  #define Y3_GPIO_NUM       35
+  #define Y2_GPIO_NUM       17
+  #define VSYNC_GPIO_NUM    22
+  #define HREF_GPIO_NUM     26
+  #define PCLK_GPIO_NUM     21
+
+#elif defined(CAMERA_MODEL_AI_THINKER)
+  #define PWDN_GPIO_NUM     32
+  #define RESET_GPIO_NUM    -1
+  #define XCLK_GPIO_NUM      0
+  #define SIOD_GPIO_NUM     26
+  #define SIOC_GPIO_NUM     27
+  
+  #define Y9_GPIO_NUM       35
+  #define Y8_GPIO_NUM       34
+  #define Y7_GPIO_NUM       39
+  #define Y6_GPIO_NUM       36
+  #define Y5_GPIO_NUM       21
+  #define Y4_GPIO_NUM       19
+  #define Y3_GPIO_NUM       18
+  #define Y2_GPIO_NUM        5
+  #define VSYNC_GPIO_NUM    25
+  #define HREF_GPIO_NUM     23
+  #define PCLK_GPIO_NUM     22
+#else
+  #error "Camera model not selected"
+#endif
+
+static const char* _STREAM_CONTENT_TYPE = "multipart/x-mixed-replace;boundary=" PART_BOUNDARY;
+static const char* _STREAM_BOUNDARY = "\r\n--" PART_BOUNDARY "\r\n";
+static const char* _STREAM_PART = "Content-Type: image/jpeg\r\nContent-Length: %u\r\n\r\n";
+
+httpd_handle_t stream_httpd = NULL;
+
+static esp_err_t stream_handler(httpd_req_t *req){
+  camera_fb_t * fb = NULL;
+  esp_err_t res = ESP_OK;
+  size_t _jpg_buf_len = 0;
+  uint8_t * _jpg_buf = NULL;
+  char * part_buf[64];
+
+  sensor_t * s = esp_camera_sensor_get();
+  //flip the camera vertically
+  s->set_vflip(s, 1);          // 0 = disable , 1 = enable
+  // mirror effect
+  s->set_hmirror(s, 1);          // 0 = disable , 1 = enable
+
+  res = httpd_resp_set_type(req, _STREAM_CONTENT_TYPE);
+  if(res != ESP_OK){
+    return res;
+  }
+
+  while(true){
+    fb = esp_camera_fb_get();
+    if (!fb) {
+      Serial.println("Camera capture failed");
+      res = ESP_FAIL;
+    } else {
+      if(fb->width > 400){
+        if(fb->format != PIXFORMAT_JPEG){
+          bool jpeg_converted = frame2jpg(fb, 80, &_jpg_buf, &_jpg_buf_len);
+          esp_camera_fb_return(fb);
+          fb = NULL;
+          if(!jpeg_converted){
+            Serial.println("JPEG compression failed");
+            res = ESP_FAIL;
+          }
+        } else {
+          _jpg_buf_len = fb->len;
+          _jpg_buf = fb->buf;
+        }
+      }
+    }
+    if(res == ESP_OK){
+      size_t hlen = snprintf((char *)part_buf, 64, _STREAM_PART, _jpg_buf_len);
+      res = httpd_resp_send_chunk(req, (const char *)part_buf, hlen);
+    }
+    if(res == ESP_OK){
+      res = httpd_resp_send_chunk(req, (const char *)_jpg_buf, _jpg_buf_len);
+    }
+    if(res == ESP_OK){
+      res = httpd_resp_send_chunk(req, _STREAM_BOUNDARY, strlen(_STREAM_BOUNDARY));
+    }
+    if(fb){
+      esp_camera_fb_return(fb);
+      fb = NULL;
+      _jpg_buf = NULL;
+    } else if(_jpg_buf){
+      free(_jpg_buf);
+      _jpg_buf = NULL;
+    }
+    if(res != ESP_OK){
+      break;
+    }
+    Serial.printf("MJPG: %uB\n",(uint32_t)(_jpg_buf_len));
+  }
+  return res;
+}
+
+void startCameraServer(){
+  httpd_config_t config = HTTPD_DEFAULT_CONFIG();
+  config.server_port = 80;
+
+  httpd_uri_t index_uri = {
+    .uri       = "/",
+    .method    = HTTP_GET,
+    .handler   = stream_handler,
+    .user_ctx  = NULL
+  };
+  
+  Serial.printf("Starting web server on port: '%d'\n", config.server_port);
+  if (httpd_start(&stream_httpd, &config) == ESP_OK) {
+    httpd_register_uri_handler(stream_httpd, &index_uri);
+  }
+}
+
+void setup() {
+  WRITE_PERI_REG(RTC_CNTL_BROWN_OUT_REG, 0); //disable brownout detector
+ 
+  Serial.begin(115200);
+  Serial.setDebugOutput(true);
+  Serial.println("START");
+  Serial.println("Jetzt geht s weiter....");
+  
+  camera_config_t config;
+  config.ledc_channel = LEDC_CHANNEL_0;
+  config.ledc_timer = LEDC_TIMER_0;
+  config.pin_d0 = Y2_GPIO_NUM;
+  config.pin_d1 = Y3_GPIO_NUM;
+  config.pin_d2 = Y4_GPIO_NUM;
+  config.pin_d3 = Y5_GPIO_NUM;
+  config.pin_d4 = Y6_GPIO_NUM;
+  config.pin_d5 = Y7_GPIO_NUM;
+  config.pin_d6 = Y8_GPIO_NUM;
+  config.pin_d7 = Y9_GPIO_NUM;
+  config.pin_xclk = XCLK_GPIO_NUM;
+  config.pin_pclk = PCLK_GPIO_NUM;
+  config.pin_vsync = VSYNC_GPIO_NUM;
+  config.pin_href = HREF_GPIO_NUM;
+  config.pin_sscb_sda = SIOD_GPIO_NUM;
+  config.pin_sscb_scl = SIOC_GPIO_NUM;
+  config.pin_pwdn = PWDN_GPIO_NUM;
+  config.pin_reset = RESET_GPIO_NUM;
+  config.xclk_freq_hz = 20000000;
+  config.pixel_format = PIXFORMAT_JPEG; 
+  
+  if(psramFound()){
+    config.frame_size = FRAMESIZE_UXGA;
+    config.jpeg_quality = 10;
+    config.fb_count = 2;
+  } else {
+    config.frame_size = FRAMESIZE_SVGA;
+    config.jpeg_quality = 12;
+    config.fb_count = 1;
+  }
+  config.frame_size = FRAMESIZE_VGA;
+  config.jpeg_quality = 5;
+  config.fb_count = 1;
+  
+  
+  // Camera init
+  esp_err_t err = esp_camera_init(&config);
+  if (err != ESP_OK) {
+    Serial.printf("Camera init failed with error 0x%x", err);
+    return;
+  }
+  // Wi-Fi connection
+  WiFi.setHostname(hostname.c_str()); //define hostname
+  WiFi.mode( WIFI_STA );
+  WiFi.config( ip, gateway, subnet, dns, dns );
+  //Wifi_station_set_hostname( hostname.c_str() );
+
+  WiFi.begin(ssid, password);
+  while (WiFi.status() != WL_CONNECTED) {
+    delay(500);
+    Serial.print(".");
+  }
+  Serial.println("");
+  Serial.println("WiFi connected");
+  
+  Serial.print("Camera Stream Ready! Go to: http://");
+  Serial.println(WiFi.localIP());
+  
+  // Start streaming web server
+  startCameraServer();
+}
+
+void loop() {
+  delay(1);
+}

test/README

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+
+This directory is intended for PlatformIO Test Runner and project tests.
+
+Unit Testing is a software testing method by which individual units of
+source code, sets of one or more MCU program modules together with associated
+control data, usage procedures, and operating procedures, are tested to
+determine whether they are fit for use. Unit testing finds problems early
+in the development cycle.
+
+More information about PlatformIO Unit Testing:
+- https://docs.platformio.org/en/latest/advanced/unit-testing/index.html