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

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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"
]
}

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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 convention is to give header files names that end with `.h'.
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

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

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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:esp32-s3-n16r8]
platform = espressif32
board = esp32-s3-devkitc-1
framework = arduino
monitor_speed = 115200
board_build.flash_size = 16MB
board_build.partitions = default.csv

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#pragma once
// ===== Wi-Fi (copied from main board) =====
#define WIFI_SSID "Capybara"
#define WIFI_PASS "qq1234567890"
// ===== Camera pins (ESP32-S3-CAM, OV2640) =====
// Pinout from your table.
#define CAM_PIN_PWDN -1
#define CAM_PIN_RESET -1
#define CAM_PIN_XCLK 15
#define CAM_PIN_SIOD 4
#define CAM_PIN_SIOC 5
#define CAM_PIN_Y9 16
#define CAM_PIN_Y8 17
#define CAM_PIN_Y7 18
#define CAM_PIN_Y6 12
#define CAM_PIN_Y5 10
#define CAM_PIN_Y4 8
#define CAM_PIN_Y3 9
#define CAM_PIN_Y2 11
#define CAM_PIN_VSYNC 6
#define CAM_PIN_HREF 7
#define CAM_PIN_PCLK 13
// If probe fails, try PWDN on GPIO2:
// #define CAM_PIN_PWDN 2

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#include <Arduino.h>
#include <WiFi.h>
#include <esp_camera.h>
#include <esp_http_server.h>
#include "config.h"
static const char *STREAM_CONTENT_TYPE = "multipart/x-mixed-replace;boundary=frame";
static const char *STREAM_BOUNDARY = "\r\n--frame\r\n";
static const char *STREAM_PART = "Content-Type: image/jpeg\r\nContent-Length: %u\r\n\r\n";
static httpd_handle_t httpd = nullptr;
static bool cameraPinsOk() {
return CAM_PIN_XCLK != -1 &&
CAM_PIN_SIOD != -1 &&
CAM_PIN_SIOC != -1 &&
CAM_PIN_Y2 != -1 &&
CAM_PIN_Y3 != -1 &&
CAM_PIN_Y4 != -1 &&
CAM_PIN_Y5 != -1 &&
CAM_PIN_Y6 != -1 &&
CAM_PIN_Y7 != -1 &&
CAM_PIN_Y8 != -1 &&
CAM_PIN_Y9 != -1 &&
CAM_PIN_VSYNC != -1 &&
CAM_PIN_HREF != -1 &&
CAM_PIN_PCLK != -1;
}
static String jsonSensorStatus(sensor_t *s) {
String json = "{";
json += "\"framesize\":" + String(s->status.framesize) + ",";
json += "\"quality\":" + String(s->status.quality) + ",";
json += "\"brightness\":" + String(s->status.brightness) + ",";
json += "\"contrast\":" + String(s->status.contrast) + ",";
json += "\"saturation\":" + String(s->status.saturation);
json += "}";
return json;
}
static esp_err_t handleRoot(httpd_req_t *req) {
const char *html =
"<!doctype html><html><head>"
"<meta charset='utf-8'>"
"<meta name='viewport' content='width=device-width,initial-scale=1'>"
"<title>ESP32 Cam</title>"
"<style>"
"body{font-family:sans-serif;margin:12px;}"
"img{width:100%;max-width:480px;border:1px solid #ccc;}"
"label{display:block;margin-top:10px;}"
"</style></head><body>"
"<h2>ESP32 Camera</h2>"
"<img id='stream' src='/stream' />"
"<label>Frame size:"
"<select id='fs'>"
"<option value='10'>QVGA</option>"
"<option value='11'>VGA</option>"
"<option value='12'>SVGA</option>"
"</select></label>"
"<label>Quality: <input id='q' type='range' min='6' max='30' value='12'></label>"
"<label>Brightness: <input id='b' type='range' min='-2' max='2' value='0'></label>"
"<label>Contrast: <input id='c' type='range' min='-2' max='2' value='0'></label>"
"<label>Saturation: <input id='s' type='range' min='-2' max='2' value='0'></label>"
"<script>"
"const set=(v,val)=>fetch(`/control?var=${v}&val=${val}`);"
"fs.onchange=()=>set('framesize',fs.value);"
"q.oninput=()=>set('quality',q.value);"
"b.oninput=()=>set('brightness',b.value);"
"c.oninput=()=>set('contrast',c.value);"
"s.oninput=()=>set('saturation',s.value);"
"</script></body></html>";
httpd_resp_set_type(req, "text/html; charset=utf-8");
return httpd_resp_send(req, html, HTTPD_RESP_USE_STRLEN);
}
static esp_err_t handleStatus(httpd_req_t *req) {
sensor_t *s = esp_camera_sensor_get();
if (!s) {
httpd_resp_send_err(req, HTTPD_500_INTERNAL_SERVER_ERROR, "sensor");
return ESP_FAIL;
}
String json = jsonSensorStatus(s);
httpd_resp_set_type(req, "application/json");
return httpd_resp_send(req, json.c_str(), json.length());
}
static esp_err_t handleControl(httpd_req_t *req) {
char buf[32];
char var[16];
int val = 0;
if (httpd_req_get_url_query_str(req, buf, sizeof(buf)) != ESP_OK ||
httpd_query_key_value(buf, "var", var, sizeof(var)) != ESP_OK ||
httpd_query_key_value(buf, "val", buf, sizeof(buf)) != ESP_OK) {
httpd_resp_send_err(req, HTTPD_400_BAD_REQUEST, "bad query");
return ESP_FAIL;
}
val = atoi(buf);
sensor_t *s = esp_camera_sensor_get();
if (!s) {
httpd_resp_send_err(req, HTTPD_500_INTERNAL_SERVER_ERROR, "sensor");
return ESP_FAIL;
}
int res = 0;
if (!strcmp(var, "framesize")) res = s->set_framesize(s, (framesize_t)val);
else if (!strcmp(var, "quality")) res = s->set_quality(s, val);
else if (!strcmp(var, "brightness")) res = s->set_brightness(s, val);
else if (!strcmp(var, "contrast")) res = s->set_contrast(s, val);
else if (!strcmp(var, "saturation")) res = s->set_saturation(s, val);
else {
httpd_resp_send_err(req, HTTPD_404_NOT_FOUND, "unknown var");
return ESP_FAIL;
}
if (res != 0) {
httpd_resp_send_err(req, HTTPD_500_INTERNAL_SERVER_ERROR, "set failed");
return ESP_FAIL;
}
httpd_resp_send(req, "OK", 2);
return ESP_OK;
}
static esp_err_t handleCapture(httpd_req_t *req) {
camera_fb_t *fb = esp_camera_fb_get();
if (!fb) {
httpd_resp_send_err(req, HTTPD_500_INTERNAL_SERVER_ERROR, "capture failed");
return ESP_FAIL;
}
httpd_resp_set_type(req, "image/jpeg");
esp_err_t res = httpd_resp_send(req, (const char *)fb->buf, fb->len);
esp_camera_fb_return(fb);
return res;
}
static esp_err_t handleStream(httpd_req_t *req) {
httpd_resp_set_type(req, STREAM_CONTENT_TYPE);
while (true) {
camera_fb_t *fb = esp_camera_fb_get();
if (!fb) {
return ESP_FAIL;
}
uint8_t *jpeg_buf = fb->buf;
size_t jpeg_len = fb->len;
bool free_jpeg = false;
if (fb->format != PIXFORMAT_JPEG) {
if (!frame2jpg(fb, 80, &jpeg_buf, &jpeg_len)) {
esp_camera_fb_return(fb);
return ESP_FAIL;
}
free_jpeg = true;
}
char part[64];
int len = snprintf(part, sizeof(part), STREAM_PART, (unsigned)jpeg_len);
if (httpd_resp_send_chunk(req, STREAM_BOUNDARY, strlen(STREAM_BOUNDARY)) != ESP_OK ||
httpd_resp_send_chunk(req, part, len) != ESP_OK ||
httpd_resp_send_chunk(req, (const char *)jpeg_buf, jpeg_len) != ESP_OK) {
if (free_jpeg) free(jpeg_buf);
esp_camera_fb_return(fb);
return ESP_FAIL;
}
if (free_jpeg) free(jpeg_buf);
esp_camera_fb_return(fb);
}
return ESP_OK;
}
static void startWebServer() {
httpd_config_t config = HTTPD_DEFAULT_CONFIG();
config.max_uri_handlers = 8;
if (httpd_start(&httpd, &config) != ESP_OK) {
Serial.println("HTTP server start failed");
return;
}
httpd_uri_t root = { .uri = "/", .method = HTTP_GET, .handler = handleRoot, .user_ctx = nullptr };
httpd_uri_t status = { .uri = "/status", .method = HTTP_GET, .handler = handleStatus, .user_ctx = nullptr };
httpd_uri_t control = { .uri = "/control", .method = HTTP_GET, .handler = handleControl, .user_ctx = nullptr };
httpd_uri_t capture = { .uri = "/capture", .method = HTTP_GET, .handler = handleCapture, .user_ctx = nullptr };
httpd_uri_t stream = { .uri = "/stream", .method = HTTP_GET, .handler = handleStream, .user_ctx = nullptr };
httpd_register_uri_handler(httpd, &root);
httpd_register_uri_handler(httpd, &status);
httpd_register_uri_handler(httpd, &control);
httpd_register_uri_handler(httpd, &capture);
httpd_register_uri_handler(httpd, &stream);
}
void setup() {
Serial.begin(115200);
delay(200);
if (!cameraPinsOk()) {
Serial.println("Camera pins are not set. Update src/config.h.");
while (true) delay(1000);
}
WiFi.mode(WIFI_STA);
WiFi.begin(WIFI_SSID, WIFI_PASS);
Serial.print("Connecting to Wi-Fi");
while (WiFi.status() != WL_CONNECTED) {
Serial.print(".");
delay(300);
}
Serial.println();
Serial.print("Connected, IP: ");
Serial.println(WiFi.localIP());
camera_config_t config = {};
config.ledc_channel = LEDC_CHANNEL_0;
config.ledc_timer = LEDC_TIMER_0;
config.pin_d0 = CAM_PIN_Y2;
config.pin_d1 = CAM_PIN_Y3;
config.pin_d2 = CAM_PIN_Y4;
config.pin_d3 = CAM_PIN_Y5;
config.pin_d4 = CAM_PIN_Y6;
config.pin_d5 = CAM_PIN_Y7;
config.pin_d6 = CAM_PIN_Y8;
config.pin_d7 = CAM_PIN_Y9;
config.pin_xclk = CAM_PIN_XCLK;
config.pin_pclk = CAM_PIN_PCLK;
config.pin_vsync = CAM_PIN_VSYNC;
config.pin_href = CAM_PIN_HREF;
config.pin_sccb_sda = CAM_PIN_SIOD;
config.pin_sccb_scl = CAM_PIN_SIOC;
config.pin_pwdn = CAM_PIN_PWDN;
config.pin_reset = CAM_PIN_RESET;
config.xclk_freq_hz = 20000000;
config.pixel_format = PIXFORMAT_JPEG;
config.grab_mode = CAMERA_GRAB_LATEST;
// FPS preset: smaller frame + higher JPEG quality value (more compression).
// Note: lower "quality" number = better quality but slower.
if (psramFound()) {
config.frame_size = FRAMESIZE_QVGA;
config.jpeg_quality = 20;
config.fb_count = 2;
config.fb_location = CAMERA_FB_IN_PSRAM;
} else {
config.frame_size = FRAMESIZE_QVGA;
config.jpeg_quality = 20;
config.fb_count = 1;
config.fb_location = CAMERA_FB_IN_DRAM;
}
if (esp_camera_init(&config) != ESP_OK) {
Serial.println("Camera init failed");
while (true) delay(1000);
}
startWebServer();
Serial.println("Camera server ready: http://<ip>/");
}
void loop() {
delay(1000);
}

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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