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本篇博文使用ESP32-S3搭建网络摄像头,相比较局域网摄像头,本篇博文将分享如何搭建外网可以访问的网络摄像头。
9 n3 A% G& ^5 e! m1 t+ S8 V这主要是使用内网穿透技术,内网穿透是为了使具有某一个特定源 IP 地址和源端口号的数据包(这里指局域网摄像头)不被网络地址转换设备屏蔽而正确路由到内网主机。2 h: t, Y2 a- d6 R) m) j
主要流程分为两步:
% v- V0 i& }0 B1、先实现局域网访问网络摄像头;
0 K2 J" i, [( z" u2、在此基础,使用内网穿透的方式,搭建外网可访问的网络摄像头。( P- R8 u& K/ A: d) [
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: W. c" I0 W: x3 _$ q9 T, N' TESP32实现局域网摄像头的方式比较简单,驱动代码如下:
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#include "esp_camera.h"#include
, N. b6 Z3 p* K: Y0 {//// WARNING!!! PSRAM IC required for UXGA resolution and high JPEG quality// Ensure ESP32 Wrover Module or other board with PSRAM is selected// Partial images will be transmitted if image exceeds buffer size//// You must select partition scheme from the board menu that has at least 3MB APP space.// Face Recognition is DISABLED for ESP32 and ESP32-S2, because it takes up from 15 // seconds to process single frame. Face Detection is ENABLED if PSRAM is enabled as well
6 M# H' q& A7 K3 q// ===================// Select camera model// ===================//#define CAMERA_MODEL_WROVER_KIT // Has PSRAM// #define CAMERA_MODEL_ESP_EYE // Has PSRAM//#define CAMERA_MODEL_ESP32S3_EYE // Has PSRAM//#define CAMERA_MODEL_M5STACK_PSRAM // Has PSRAM//#define CAMERA_MODEL_M5STACK_V2_PSRAM // M5Camera version B Has PSRAM//#define CAMERA_MODEL_M5STACK_WIDE // Has PSRAM//#define CAMERA_MODEL_M5STACK_ESP32CAM // No PSRAM//#define CAMERA_MODEL_M5STACK_UNITCAM // No PSRAM//#define CAMERA_MODEL_AI_THINKER // Has PSRAM//#define CAMERA_MODEL_TTGO_T_JOURNAL // No PSRAM//#define CAMERA_MODEL_XIAO_ESP32S3 // Has PSRAM// ** Espressif Internal Boards **//#define CAMERA_MODEL_ESP32_CAM_BOARD//#define CAMERA_MODEL_ESP32S2_CAM_BOARD//#define CAMERA_MODEL_ESP32S3_CAM_LCD#define CAMERA_MODEL_DFRobot_FireBeetle2_ESP32S3 // Has PSRAM//#define CAMERA_MODEL_DFRobot_Romeo_ESP32S3 // Has PSRAM2 ]& U7 G# u5 j' G: K* n$ _# U
#include "camera_pins.h"#include "DFRobot_AXP313A.h"2 a( f5 s5 h! B& T
DFRobot_AXP313A axp;# ]) P: L& p: D; g
// ===========================// Enter your WiFi credentials// ===========================const char* ssid = "";const char* password = "";/ `1 O1 x+ ~- c6 x& s D
void startCameraServer();void setupLedFlash(int pin);. U1 {# F( U7 R% w& k- v
void setup() { Serial.begin(115200); Serial.setDebugOutput(true); Serial.println();
4 O; E. z: U8 U* Y- ]. W6 j4 t* b while(axp.begin() != 0){ Serial.println("init error"); delay(1000); }" Y% v* e3 t& G/ ^
axp.enableCameraPower(axp.eOV2640); // 给摄像头供电* s1 P0 V; i2 c9 Z
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_sccb_sda = SIOD_GPIO_NUM; config.pin_sccb_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;
9 w6 V& M I' G& Z% w // 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;#if CONFIG_IDF_TARGET_ESP32S3 config.fb_count = 2;#endif }4 J2 H; s( j: X' I
#if defined(CAMERA_MODEL_ESP_EYE) pinMode(13, INPUT_PULLUP); pinMode(14, INPUT_PULLUP);#endif
7 E2 s6 ]/ I, z) [: e) J1 s* e // 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; }( p2 N1 v: f% m
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); }
: H, r% @% B E. f#if defined(CAMERA_MODEL_M5STACK_WIDE) || defined(CAMERA_MODEL_M5STACK_ESP32CAM) s->set_vflip(s, 1); s->set_hmirror(s, 1);#endif0 F. b" x/ _! W. A9 w1 ~
#if defined(CAMERA_MODEL_ESP32S3_EYE) s->set_vflip(s, 1);#endif7 p# r% \; J! ~' p% _" M4 S
// Setup LED FLash if LED pin is defined in camera_pins.h#if defined(LED_GPIO_NUM) setupLedFlash(LED_GPIO_NUM);#endif6 \* E- F! \0 x
WiFi.begin(ssid, password); WiFi.setSleep(false);
5 W2 s! |) C( }' c& K% Q. H+ ^/ a/ T while (WiFi.status() != WL_CONNECTED) { delay(500); Serial.print("."); } Serial.println(""); Serial.println("WiFi connected");
% F" s' j( l G$ V( ]/ r1 ?' X* Q startCameraServer();
- O; u' f1 I- H Serial.print("Camera Ready! Use 'http://"); Serial.print(WiFi.localIP()); Serial.println("' to connect");}! P7 }# b6 @2 B: s1 u" A
void loop() { // Do nothing. Everything is done in another task by the web server delay(10000);}% e6 V) q$ {# j1 Z* P2 I" t
代码中有几点需要注意:( X8 `% m ^2 d) Q( u4 [
5 `; R# O: p9 p+ C1、宏定义选择适配的摄像头模式。+ M6 F% s; E V) P
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// ===================// Select camera model// ===================//#define CAMERA_MODEL_WROVER_KIT // Has PSRAM// #define CAMERA_MODEL_ESP_EYE // Has PSRAM//#define CAMERA_MODEL_ESP32S3_EYE // Has PSRAM//#define CAMERA_MODEL_M5STACK_PSRAM // Has PSRAM//#define CAMERA_MODEL_M5STACK_V2_PSRAM // M5Camera version B Has PSRAM//#define CAMERA_MODEL_M5STACK_WIDE // Has PSRAM//#define CAMERA_MODEL_M5STACK_ESP32CAM // No PSRAM//#define CAMERA_MODEL_M5STACK_UNITCAM // No PSRAM//#define CAMERA_MODEL_AI_THINKER // Has PSRAM//#define CAMERA_MODEL_TTGO_T_JOURNAL // No PSRAM//#define CAMERA_MODEL_XIAO_ESP32S3 // Has PSRAM// ** Espressif Internal Boards **//#define CAMERA_MODEL_ESP32_CAM_BOARD//#define CAMERA_MODEL_ESP32S2_CAM_BOARD//#define CAMERA_MODEL_ESP32S3_CAM_LCD#define CAMERA_MODEL_DFRobot_FireBeetle2_ESP32S3 // Has PSRAM//#define CAMERA_MODEL_DFRobot_Romeo_ESP32S3 // Has PSRAM9 |& m8 D3 e0 Y2 h6 k3 S
2、无线路由器SSID和密码要填写正确。1 w6 H# C6 o+ E6 }% S2 g
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// ===========================// Enter your WiFi credentials// ===========================const char* ssid = "";const char* password = "";
5 w( O8 g( R) p! [1 D8 K6 d3、给摄像头供电
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axp.enableCameraPower(axp.eOV2640); // 给摄像头供电2 Z2 T/ E: b. G/ u* f: t1 i
4、板卡需要外接天线,否则可能无法连接路由器。
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编译下载程序到板卡中,确保局域网访问网络摄像头可正常使用。
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内网穿透网络摄像头
* z; O, b) L0 p Y2 {* q: ?内网穿透我们使用花生壳这款软件提供的内网穿透服务。
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在官网下载APP:https://hsk.oray.com/
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4 l r1 ^6 P" U下载安装完成后,在内网穿透服务点击新建映射,如下图所示: 8 l4 e' J1 M6 B8 B# f
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" b+ _4 D6 r2 y" _1 U, X填写新建映射的基本信息,请注意内网主机和内网端口是局域网摄像头的主机和端口(端口默认为80) ,如下图所示:; O: E5 o; [, Y9 O9 W' w
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新建映射完成后,可以在APP看到新增的设备列表,如下图所示:
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复制访问网址,在浏览器中打开:http://2j90962r69.goho.co:47918/! q+ `4 J \( W$ m8 v8 y6 {
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即使不在同一个局域网内也可以正常访问摄像头啦。1 `! r) ~, [0 u( h7 c4 o9 W% _
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