15. 摄像头

原理图下载

在下载中心的百度网盘链接中文档教程章节里面Arduino->摄像头下载

使用该例程需要将另外两个文件 app_httpd.cpp 和 camera_index.h 一起放在一个文件夹里，形成工程文件夹，这样编译才不会报错。
下载完成之后，通过串口助手查看初始化状态，当出现IP地址时说明程序运行成功。

使用电脑或者手机连接设置的热点，在浏览器网页上输入上面的IP地址，即可进入摄像头控制界面。
在摄像头控制界面上点击 Start Steam 键，即可开启摄像头WIFI传输。

camera.ino

#include "esp_camera.h"
#include <WiFi.h>

//相关引脚设置
#define PWDN_GPIO_NUM -1//不接
#define RESET_GPIO_NUM -1//不接
#define XCLK_GPIO_NUM 39
#define SIOD_GPIO_NUM 21
#define SIOC_GPIO_NUM 1

#define Y9_GPIO_NUM 40
#define Y8_GPIO_NUM 38
#define Y7_GPIO_NUM 10
#define Y6_GPIO_NUM 12
#define Y5_GPIO_NUM 7
#define Y4_GPIO_NUM 48
#define Y3_GPIO_NUM 47
#define Y2_GPIO_NUM 6
#define VSYNC_GPIO_NUM 42
#define HREF_GPIO_NUM 41
#define PCLK_GPIO_NUM 11

//闪光灯--未使用
#define LED_GPIO_NUM 22

// ===========================
// 设置开发板要连接的WIFI名称和密码
// ===========================
const char* ssid = "lckfb";
const char* password = "12345678";

//相关函数调用 -- 来自 app_httpd.cpp
void startCameraServer();
void setupLedFlash(int pin);

void setup() {
Serial.begin(115200);
Serial.setDebugOutput(true);
Serial.println();

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.frame_size = FRAMESIZE_UXGA;
config.pixel_format = PIXFORMAT_JPEG; // for streaming
//config.pixel_format = PIXFORMAT_RGB565; // for face detection/recognition
config.grab_mode = CAMERA_GRAB_WHEN_EMPTY;
config.fb_location = CAMERA_FB_IN_PSRAM;
config.jpeg_quality = 12;
config.fb_count = 1;

// if PSRAM IC present, init with UXGA resolution and higher JPEG quality
// for larger pre-allocated frame buffer.
if(config.pixel_format == PIXFORMAT_JPEG){
if(psramFound()){
config.jpeg_quality = 10;
config.fb_count = 2;
config.grab_mode = CAMERA_GRAB_LATEST;
} else {
// Limit the frame size when PSRAM is not available
config.frame_size = FRAMESIZE_SVGA;
config.fb_location = CAMERA_FB_IN_DRAM;
}
} else {
// Best option for face detection/recognition
config.frame_size = FRAMESIZE_240X240;
config.fb_count = 2;

}

// 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;
}

sensor_t \* s = esp_camera_sensor_get();
// initial sensors are flipped vertically and colors are a bit saturated
if (s->id.PID == OV3660_PID) {
s->set_vflip(s, 1); // flip it back
s->set_brightness(s, 1); // up the brightness just a bit
s->set_saturation(s, -2); // lower the saturation
}
// drop down frame size for higher initial frame rate
if(config.pixel_format == PIXFORMAT_JPEG){
s->set_framesize(s, FRAMESIZE_QVGA);
}

s->set_vflip(s, 1);

// Setup LED FLash if LED pin is defined in camera_pins.h
#if defined(LED_GPIO_NUM)
setupLedFlash(LED_GPIO_NUM);
#endif

WiFi.begin(ssid, password);
WiFi.setSleep(false);

while (WiFi.status() != WL_CONNECTED) {
delay(500);
Serial.print(".");
}
Serial.println("");
Serial.println("WiFi connected");

startCameraServer();

Serial.print("Camera Ready! Use 'http://");
Serial.print(WiFi.localIP());
Serial.println("' to connect");
}

void loop() {
// Do nothing. Everything is done in another task by the web server
delay(10000);
}

文件下载

app_httpd.cpp在下载中心的百度网盘链接中文档教程章节里面Arduino->摄像头下载

camera_index.h在下载中心的百度网盘链接中文档教程章节里面Arduino->摄像头下载