Signed-off-by: yunyifeng <yunyifeng@iris-rs.cn>

.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 a 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
+lib_deps = espressif/esp32-camera@^2.0.4

src/main.cpp

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+#include "Arduino.h"
+#include "WiFi.h"
+#include "WebServer.h"
+#include "esp_camera.h"
+
+#define 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
+
+WiFiClient wifiClient;
+WebServer server(80);
+camera_config_t config;
+const char* ssid = "123";
+const char* password = "12345678";
+
+int qualityconfig = 12;
+int buffersconfig = 1;
+size_t _jpg_buf_len = 0;
+uint8_t * _jpg_buf = NULL;
+
+
+
+
+// 处理根路径的请求
+void handleRootRequest() {
+  // 捕获摄像头图像
+  // while (true)
+  // {
+    camera_fb_t* fb = NULL;
+    fb = esp_camera_fb_get();
+
+    const char* tmpBuf = reinterpret_cast<const char*>(fb->buf);
+    server.sendHeader("content-Type","image/jpeg");
+    server.send_P(200,"image/jpeg",tmpBuf,fb->len);
+    esp_camera_fb_return(fb);
+
+  // }
+} 
+
+void cam_init(){
+  //i初始化引脚
+  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; 
+  config.frame_size =  (framesize_t)FRAMESIZE_QVGA;
+  config.jpeg_quality = qualityconfig;
+  config.fb_count = buffersconfig;
+
+  //初始化5次  初始化失败退出
+  esp_err_t cam_err = ESP_FAIL;
+  int attempt = 5;
+  while (attempt && cam_err != ESP_OK) {
+    cam_err = esp_camera_init(&config);
+    if(cam_err != ESP_OK) {
+      Serial.printf("Camera init failed with error 0x%x", cam_err);
+      digitalWrite(PWDN_GPIO_NUM, 1);
+      delay(500);
+      digitalWrite(PWDN_GPIO_NUM, 0); // power cycle the camera (OV2640)
+      attempt--;
+    }
+  }
+  Serial.printf("After  camera config ...");
+  Serial.printf("Internal Total heap %d, internal Free Heap %d, ", ESP.getHeapSize(), ESP.getFreeHeap());
+  Serial.printf("SPIRam Total heap   %d, SPIRam Free Heap   %d\n", ESP.getPsramSize(), ESP.getFreePsram());
+
+}
+
+
+void setup(){
+  camera_fb_t* fb = NULL;
+  Serial.begin(115200);
+
+  WiFi.begin(ssid, password);
+  while (WiFi.status() != WL_CONNECTED) {
+    WiFi.begin(ssid, password);
+    delay(2000);
+    Serial.print("5");
+  }
+  cam_init();
+  Serial.println("");
+  Serial.println("WiFi connected");
+  Serial.print("Camera Stream Ready! Go to: http://");
+  Serial.println(WiFi.localIP());
+  
+ //启动Web服务器
+  server.on("/", HTTP_GET, handleRootRequest);
+  server.begin();
+  Serial.println("Web server started");
+
+
+}
+
+void loop(){
+  server.handleClient();
+}

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