• OpenMV VSCode 扩展发布了,在插件市场直接搜索OpenMV就可以安装
  • 如果有产品硬件故障问题,比如无法开机,论坛很难解决。可以直接找售后维修
  • 发帖子之前,请确认看过所有的视频教程,https://singtown.com/learn/ 和所有的上手教程http://book.openmv.cc/
  • 每一个新的提问,单独发一个新帖子
  • 帖子需要目的,你要做什么?
  • 如果涉及代码,需要报错提示全部代码文本,请注意不要贴代码图片
  • 必看:玩转星瞳论坛了解一下图片上传,代码格式等问题。
  • 使用H7 Plus发送HTTP报文会提示运行内存不足



    • H7 Plus的额RAM不是32M吗?感觉很容易内存就没了。而且我经过手动内存释放后,还是会有内存不足的提示。

      import sensor
      import network
      import socket
      import gc
      from pyb import UART
      from pyb import LED
      
      led = LED(1)
      led_p = LED(2)
      led.on()
      led_p.off()
      
      uart = UART(3, 9600)
      
      type_ = "3"
      type_data =("\r\n" + type_).encode('utf-8')
      
      # AP info
      SSID = ""  # Network SSID
      KEY = ""  # Network key
      
      PORT = 9999
      HOST = ""
      
      # 构建 HTTP 请求头和主体
      boundary = '----WebKitFormBoundary7MA4YWxkTrZu0gW'
      content_type = 'image/jpg'
      # 构建请求体
      body_start_type = (
          "\r\n"
          "--" + boundary + "\r\n"
          "Content-Disposition: form-data; name=\"type\"\r\n"
      ).encode('utf-8')
      # 构建请求体尾
      body_end = ("\r\n--" + boundary + "--\r\n").encode('utf-8')
      
      # 初始化感光元件
      sensor.reset()
      sensor.set_pixformat(sensor.RGB565) # Modify as you like.
      sensor.set_framesize(sensor.SVGA) # Modify as you like.
      
      # 初始化wlan模块并连接到网络
      wlan = network.WLAN(network.STA_IF)
      wlan.active(True)
      wlan.connect(SSID, KEY)
      
      while not wlan.isconnected():
          print('Trying to connect to "{:s}"...'.format(SSID))
          time.sleep_ms(1000)
      
      led.off()
      led_p.on()
      
      print("WiFi Connected ", wlan.ifconfig())
      
      # 通过DNS获取addr信息
      addr = socket.getaddrinfo(HOST, PORT)[0][4]
      print(addr)
      del addr
      
      while True:
          read_data = uart.read(10)
          if read_data != None:
              if read_data and read_data != b'\x00' * 10:  # 检查数据是否全是0
      
                  # 解码字节串为字符串
                  string_data = read_data.decode('utf-8')
                  del read_data
      
                  # 添加文件扩展名
                  filename = string_data + ".jpg"
                  del string_data
      
                  led_p.off()
      
                  # 拍照
                  frame = sensor.snapshot()
                  frame.save(filename)
                  del frame
      
                  f = open(filename, 'rb')
                  file_data = f.read()
                  f.close()
                  del f
      
                  # 构建请求体
                  body_start_data = (
                      "--" + boundary + "\r\n"
                      "Content-Disposition: form-data; name=\"image\"; filename=\"" + filename + "\"\r\n"
                      "Content-Type: " + content_type + "\r\n\r\n"
                  ).encode('utf-8')
                  del filename
      
                  # 完整的请求体
                  body = (body_start_data + file_data + body_start_type + type_data + body_end)
                  del body_start_data
                  del file_data
      
                  # 构建请求头
                  headers = (
                      "POST /images/upload HTTP/1.1\r\n"
                      "Host: " + HOST + ":" + str(PORT) + "\r\n"
                      "Content-Length: " + str(len(body)) + "\r\n"
                      "Content-Type: multipart/form-data; boundary=" + boundary + "\r\n"
                      "Connection: keep-alive\r\n\r\n"
                  ).encode('utf-8')
      
                  # 完整的请求
                  request_data = headers + body
                  del headers
                  del body
      
                  # 创建 socket 连接
                  sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
                  sock.connect((HOST, PORT))
      
                  # 发送 HTTP 请求
                  sock.sendall(request_data)
                  del request_data
      
                  # 接收服务器响应
                  data = sock.recv(4096)
      
                  sock.close()
                  del sock
      
                  led_p.on()
      
                  gc.collect()
      
      


    • 你先保存文件,然后再读取,这个操作太奇怪。你应该用to_jpeg(copy=True)