openmv可以通过使用乐鑫的esp8266连接阿里云吗

b4a5

kidswong999

可以，用串口传输数据就行。

b4a5

有没有实例代码？

import sensor
import time
import network
import socket

SSID = "OPENMV_AP" # Network SSID
KEY = "1234567890" # wifi密码(必须为10字符)
HOST = "" # 使用第一个可用的端口
PORT = 8080 # 任意非特权端口

重置感光元件

sensor.reset()
sensor.set_framesize(sensor.QQVGA)
sensor.set_pixformat(sensor.GRAYSCALE)

在AP模式下启动wlan模块。

wlan = network.WLAN(network.AP_IF)
wlan.config(ssid=SSID, key=KEY, channel=2)
wlan.active(True)

print("AP mode started. SSID: {} IP: {}".format(SSID, wlan.ifconfig()[0]))

您可以阻止等待客户端连接

print(wlan.wait_for_sta(100000))

def start_streaming(client):
# 从客户端读取请求
data = client.recv(1024)
# 应该在这里解析客户端请求

# 发送多部分header
client.send(
    "HTTP/1.1 200 OK\r\n"
    "Server: OpenMV\r\n"
    "Content-Type: multipart/x-mixed-replace;boundary=openmv\r\n"
    "Cache-Control: no-cache\r\n"
    "Pragma: no-cache\r\n\r\n"
)

# FPS clock
clock = time.clock()

# 开始流媒体图像
# 注：禁用IDE预览以增加流式帧率。
while True:
    clock.tick()  # 跟踪snapshots()之间经过的毫秒数。
    frame = sensor.snapshot()
    cframe = frame.compressed(quality=35)
    header = (
        "\r\n--openmv\r\n"
        "Content-Type: image/jpeg\r\n"
        "Content-Length:" + str(cframe.size()) + "\r\n\r\n"
    )
    client.sendall(header)
    client.sendall(cframe)
    print(clock.fps())

server = None

while True:
if server is None:
# 创建服务器套接字
server = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
server.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, True)
# 绑定和监听
server.bind([HOST, PORT])
server.listen(5)
# Set server socket to blocking
server.setblocking(True)

try:
    print("Waiting for connections..")
    client, addr = server.accept()
except OSError as e:
    server.close()
    server = None
    print("server socket error:", e)
    continue

try:
    # 将客户端套接字超时设置为5秒
    client.settimeout(5.0)
    print("Connected to " + addr[0] + ":" + str(addr[1]))
    start_streaming(client)
except OSError as e:
    client.close()
    print("client socket error:", e)
    # sys.print_exception(e)

可以从这个代码里改吗，怎么改呢？

b4a5

@kidswong999 有没有示例代码？

kvyx

@b4a5 我目前也正在研究这个openmv跟阿里云进行连接？可以跟你交流一下么？