- ESP32 CAM 代码 基于Arduino实现
/* 网络调试助手 https://soft.3dmgame.com/down/213757.html */ #include <Arduino.h> #include <WiFi.h> #include "esp_camera.h" #include <vector> const char *ssid = "dsx_zj"; const char *password = "dsxbs725"; const IPAddress serverIP(192,168,0,2); //欲访问的地址 uint16_t serverPort = 8080; //服务器端口号 #define maxcache 1430 WiFiClient client; //声明一个客户端对象,用于与服务器进行连接 //CAMERA_MODEL_AI_THINKER类型摄像头的引脚定义 #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 static camera_config_t camera_config = { .pin_pwdn = PWDN_GPIO_NUM, .pin_reset = RESET_GPIO_NUM, .pin_xclk = XCLK_GPIO_NUM, .pin_sscb_sda = SIOD_GPIO_NUM, .pin_sscb_scl = SIOC_GPIO_NUM, .pin_d7 = Y9_GPIO_NUM, .pin_d6 = Y8_GPIO_NUM, .pin_d5 = Y7_GPIO_NUM, .pin_d4 = Y6_GPIO_NUM, .pin_d3 = Y5_GPIO_NUM, .pin_d2 = Y4_GPIO_NUM, .pin_d1 = Y3_GPIO_NUM, .pin_d0 = Y2_GPIO_NUM, .pin_vsync = VSYNC_GPIO_NUM, .pin_href = HREF_GPIO_NUM, .pin_pclk = PCLK_GPIO_NUM, .xclk_freq_hz = 20000000, .ledc_timer = LEDC_TIMER_0, .ledc_channel = LEDC_CHANNEL_0, .pixel_format = PIXFORMAT_JPEG, .frame_size = FRAMESIZE_VGA, .jpeg_quality = 12, .fb_count = 1, }; void wifi_init() { WiFi.mode(WIFI_STA); WiFi.setSleep(false); //关闭STA模式下wifi休眠,提高响应速度 WiFi.begin(ssid, password); while (WiFi.status() != WL_CONNECTED) { delay(500); Serial.print("."); } Serial.println("WiFi Connected!"); Serial.print("IP Address:"); Serial.println(WiFi.localIP()); } esp_err_t camera_init() { //initialize the camera esp_err_t err = esp_camera_init(&camera_config); if (err != ESP_OK) { Serial.println("Camera Init Failed"); return err; } sensor_t * s = esp_camera_sensor_get(); //initial sensors are flipped vertically and colors are a bit saturated if (s->id.PID == OV2640_PID) { // s->set_vflip(s, 1);//flip it back // s->set_brightness(s, 1);//up the blightness just a bit // s->set_contrast(s, 1); } Serial.println("Camera Init OK!"); return ESP_OK; } void setup() { Serial.begin(115200); wifi_init(); camera_init(); } void loop() { Serial.println("Try To Connect TCP Server!"); if (client.connect(serverIP, serverPort)) //尝试访问目标地址 { Serial.println("Connect Tcp Server Success!"); //client.println("Frame Begin"); //46 72 61 6D 65 20 42 65 67 69 6E // 0D 0A 代表换行 //向服务器发送数据 while (1){ camera_fb_t * fb = esp_camera_fb_get(); uint8_t * temp = fb->buf; //这个是为了保存一个地址,在摄像头数据发送完毕后需要返回,否则会出现板子发送一段时间后自动重启,不断重复 if (!fb) { Serial.println( "Camera Capture Failed"); } else { //先发送Frame Begin 表示开始发送图片 然后将图片数据分包发送 每次发送1430 余数最后发送 //完毕后发送结束标志 Frame Over 表示一张图片发送完毕 client.print("Frame Begin"); //一张图片的起始标志 // 将图片数据分段发送 int leng = fb->len; int timess = leng/maxcache; int extra = leng%maxcache; for(int j = 0;j< timess;j++) { client.write(fb->buf, maxcache); for(int i =0;i< maxcache;i++) { fb->buf++; } } client.write(fb->buf, extra); client.print("Frame Over"); // 一张图片的结束标志 Serial.print("This Frame Length:"); Serial.print(fb->len); Serial.println(".Succes To Send Image For TCP!"); //return the frame buffer back to the driver for reuse fb->buf = temp; //将当时保存的指针重新返还 esp_camera_fb_return(fb); //这一步在发送完毕后要执行,具体作用还未可知。 } delay(20);//短暂延时 增加数据传输可靠性 } /* while (client.connected() || client.available()) //如果已连接或有收到的未读取的数据 { if (client.available()) //如果有数据可读取 { String line = client.readStringUntil('\n'); //读取数据到换行符 Serial.print("ReceiveData:"); Serial.println(line); client.print("--From ESP32--:Hello Server!"); } } Serial.println("close connect!"); client.stop(); //关闭客户端 */ } else { Serial.println("Connect To Tcp Server Failed!After 10 Seconds Try Again!"); client.stop(); //关闭客户端 } delay(10000); }
- TCP服务器代码 基于python实现
import socket import threading import time import numpy as np import cv2 begin_data = b'Frame Begin' end_data = b'Frame Over' #接收数据 # ESP32发送一张照片的流程 # 先发送Frame Begin 表示开始发送图片 然后将图片数据分包发送 每次发送1430 余数最后发送 # 完毕后发送结束标志 Frame Over 表示一张图片发送完毕 # 1430 来自ESP32cam发送的一个包大小为1430 接收到数据 data格式为b'' def handle_sock(sock, addr): temp_data = b'' t1 = int(round(time.time() * 1000)) while True: data = sock.recv(1430) # 如果这一帧数据包的开头是 b'Frame Begin' 则是一张图片的开始 if data[0:len(begin_data)] == begin_data: # 将这一帧数据包的开始标志信息(b'Frame Begin')清除 因为他不属于图片数据 data = data[len(begin_data):len(data)] # 判断这一帧数据流是不是最后一个帧 最后一针数据的结尾时b'Frame Over' while data[-len(end_data):] != end_data: temp_data = temp_data + data # 不是结束的包 讲数据添加进temp_data data = sock.recv(1430)# 继续接受数据 直到接受的数据包包含b'Frame Over' 表示是这张图片的最后一针 # 判断为最后一个包 将数据去除 结束标志信息 b'Frame Over' temp_data = temp_data + data[0:(len(data) - len(end_data))] # 将多余的(\r\nFrame Over)去掉 其他放入temp_data # 显示图片 receive_data = np.frombuffer(temp_data, dtype='uint8') # 将获取到的字符流数据转换成1维数组 r_img = cv2.imdecode(receive_data, cv2.IMREAD_COLOR) # 将数组解码成图像 r_img = r_img.reshape(480, 640, 3) t2 = int(round(time.time() * 1000)) fps = 1000//(t2-t1) cv2.putText(r_img, "FPS" + str(fps), (50, 50), cv2.FONT_HERSHEY_SIMPLEX, 1, (255, 0, 0), 2) cv2.imshow('server_frame', r_img) if cv2.waitKey(1) & 0xFF == ord('q'): break t1 = t2 print("接收到的数据包大小:" + str(len(temp_data))) # 显示该张照片数据大小 temp_data = b'' # 清空数据 便于下一章照片使用 server = socket.socket(socket.AF_INET, socket.SOCK_STREAM) server.bind(('192.168.0.2', 8080)) server.listen(5) CONNECTION_LIST = [] #主线程循环接收客户端连接 while True: sock, addr = server.accept() CONNECTION_LIST.append(sock) print('Connect--{}'.format(addr)) #连接成功后开一个线程用于处理客户端 client_thread = threading.Thread(target=handle_sock, args=(sock, addr)) client_thread.start()
ESP32 CAM与服务器(python)TCP视频传输
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转载自blog.csdn.net/weixin_42854045/article/details/127381388
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