Init

.gitignore

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

.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"
+    ]
+}

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

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:esp-wrover-kit]
+platform = espressif32
+board = esp-wrover-kit
+framework = arduino
+build_flags = -DBOARD_HAS_PSRAM -mfix-esp32-psram-cache-issue
+monitor_port = COM[13678]
+monitor_speed = 115200
+monitor_rts = 0
+monitor_dtr = 0
+lib_deps = 
+	yoursunny/esp32cam@^0.0.20210226
+	naguissa/uTimerLib@^1.6.7

src/main.cpp

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+#define CAMERA_MODEL_AI_THINKER
+#include <WebServer.h>
+#include <WiFi.h>
+#include <esp32cam.h>
+#include "uTimerLib.h"
+
+const char* WIFI_SSID = "CAMAP";
+const char* WIFI_PASS = "camera4okutt*8";
+const uint8_t port = 12;
+const uint16_t pulseTimeout = 4;
+
+WebServer server(80);
+
+static auto loRes = esp32cam::Resolution::find(320, 240);
+static auto hiRes = esp32cam::Resolution::find(800, 600);
+
+void
+handleBmp()
+{
+  if (!esp32cam::Camera.changeResolution(loRes)) {
+    Serial.println("SET-LO-RES FAIL");
+  }
+
+  auto frame = esp32cam::capture();
+  if (frame == nullptr) {
+    Serial.println("CAPTURE FAIL");
+    server.send(503, "", "");
+    return;
+  }
+  Serial.printf("CAPTURE OK %dx%d %db\n", frame->getWidth(), frame->getHeight(),
+                static_cast<int>(frame->size()));
+
+  if (!frame->toBmp()) {
+    Serial.println("CONVERT FAIL");
+    server.send(503, "", "");
+    return;
+  }
+  Serial.printf("CONVERT OK %dx%d %db\n", frame->getWidth(), frame->getHeight(),
+                static_cast<int>(frame->size()));
+
+  server.setContentLength(frame->size());
+  server.send(200, "image/bmp");
+  WiFiClient client = server.client();
+  frame->writeTo(client);
+}
+
+void
+serveJpg()
+{
+  auto frame = esp32cam::capture();
+  if (frame == nullptr) {
+    Serial.println("CAPTURE FAIL");
+    server.send(503, "", "");
+    return;
+  }
+  Serial.printf("CAPTURE OK %dx%d %db\n", frame->getWidth(), frame->getHeight(),
+                static_cast<int>(frame->size()));
+
+  server.setContentLength(frame->size());
+  server.send(200, "image/jpeg");
+  WiFiClient client = server.client();
+  frame->writeTo(client);
+}
+
+void
+handleJpgLo()
+{
+  if (!esp32cam::Camera.changeResolution(loRes)) {
+    Serial.println("SET-LO-RES FAIL");
+  }
+  serveJpg();
+}
+
+void
+handleJpgHi()
+{
+  if (!esp32cam::Camera.changeResolution(hiRes)) {
+    Serial.println("SET-HI-RES FAIL");
+  }
+  serveJpg();
+}
+
+void
+handleJpg()
+{
+  server.sendHeader("Location", "/cam-hi.jpg");
+  server.send(302, "", "");
+}
+
+void
+handleMjpeg()
+{
+  if (!esp32cam::Camera.changeResolution(hiRes)) {
+    Serial.println("SET-HI-RES FAIL");
+  }
+
+  Serial.println("STREAM BEGIN");
+  WiFiClient client = server.client();
+  auto startTime = millis();
+  int res = esp32cam::Camera.streamMjpeg(client);
+  if (res <= 0) {
+    Serial.printf("STREAM ERROR %d\n", res);
+    return;
+  }
+  auto duration = millis() - startTime;
+  Serial.printf("STREAM END %dfrm %0.2ffps\n", res, 1000.0 * res / duration);
+}
+
+void handleOne()
+{
+  digitalWrite(port,1);
+}
+
+void handleZero()
+{
+  digitalWrite(port,0);
+}
+
+void handlePulse()
+{
+  handleOne();
+
+  TimerLib.setTimeout_s(handleZero,pulseTimeout);
+}
+
+void
+setup()
+{
+  Serial.begin(115200);
+  Serial.println();
+
+  {
+    using namespace esp32cam;
+    Config cfg;
+    cfg.setPins(pins::AiThinker);
+    cfg.setResolution(hiRes);
+    cfg.setBufferCount(2);
+    cfg.setJpeg(80);
+
+    bool ok = Camera.begin(cfg);
+    Serial.println(ok ? "CAMERA OK" : "CAMERA FAIL");
+
+    pinMode(port, OUTPUT);
+    Serial.println("SET PORT OUTPUT\n");
+
+  }
+
+  WiFi.persistent(false);
+  WiFi.mode(WIFI_STA);
+  WiFi.begin(WIFI_SSID, WIFI_PASS);
+  while (WiFi.status() != WL_CONNECTED) {
+    delay(500);
+  }
+
+  Serial.print("http://");
+  Serial.println(WiFi.localIP());
+  Serial.println("  /cam.bmp");
+  Serial.println("  /cam-lo.jpg");
+  Serial.println("  /cam-hi.jpg");
+  Serial.println("  /cam.mjpeg");
+
+  server.on("/cam.bmp", handleBmp);
+  server.on("/cam-lo.jpg", handleJpgLo);
+  server.on("/cam-hi.jpg", handleJpgHi);
+  server.on("/cam.jpg", handleJpg);
+  server.on("/cam.mjpeg", handleMjpeg);
+  server.on("/send.zero",handleZero);
+  server.on("/send.one",handleOne);
+  server.on("/send.pulse",handlePulse);
+
+  server.begin();
+}
+
+void
+loop()
+{
+  server.handleClient();
+}

test/README

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+
+This directory is intended for PlatformIO Unit Testing 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/page/plus/unit-testing.html