マイコンのカメラ入門したい🙂 ESP32 Python カメラ制御とビデオ配信方法

import network
import socket
import time
import _thread
from camera import Camera, FrameSize, PixelFormat

SSID = 'YOUR_SSID'
PASSWORD = 'YOUR_PASSWORD'
CAM_PIXEL_FORMAT = PixelFormat.JPEG 
CURRENT_FRAME_SIZE = FrameSize.VGA  
XCLK_FREQ = 10000000

def connect_wifi(ssid, password):
    station = network.WLAN(network.STA_IF)
    station.active(True)
    station.connect(ssid, password)
    while not station.isconnected():
        time.sleep(1)
    return station.ifconfig()[0]

def init_camera(frame_size, pixel_format, xclk_freq):
    cam = Camera(frame_size=frame_size, pixel_format=pixel_format, xclk_freq=xclk_freq, init=False)
    cam.init()
    return cam

def generate_html():
    return """<!DOCTYPE html><html><head><meta charset="UTF-8"><title>ESP32 Camera</title></head>
<body><div class="video-container"><h1>ESP32 Camera Live Stream</h1><img src="/stream" alt="Camera Stream">
</div></body></html>
"""

def handle_stream_request(client, cam):
    try:
        headers = (
            b'HTTP/1.1 200 OK\r\n'
            b'Content-Type: multipart/x-mixed-replace; boundary=frame\r\n'
            b'Cache-Control: no-cache\r\n\r\n')
        client.send(headers)
        while True:
            frame = cam.capture()
            if not frame:
                time.sleep(0.01)
                continue
            client.send(b'--frame\r\nContent-Type: image/jpeg\r\nContent-Length: ' + str(len(frame)).encode() + b'\r\n\r\n')
            client.send(frame)
            client.send(b'\r\n')
    except OSError:
        pass

def handle_html_request(client, html_content):
    response = 'HTTP/1.1 200 OK\r\nContent-Type: text/html\r\n\r\n' + html_content
    client.send(response.encode())

def handle_client(client, cam, html_content):
    try:
        client.settimeout(5.0)
        request = b""
        while True:
            data = client.recv(1024)
            if not data:
                break
            request += data
            if request[-4:] == b"\r\n\r\n":
                break
            if len(request) > 2048:
                print("Request too large, closing connection.")
                return
        req_text = request.decode('utf-8', 'ignore')
        if 'GET /stream' in req_text:
            client.settimeout(None)
            handle_stream_request(client, cam)
        elif 'GET /' in req_text:
            handle_html_request(client, html_content)
    except OSError:
        pass
    finally:
        try:
            client.close()
        except:
            pass

def main():
    ip_address = connect_wifi(SSID, PASSWORD)
    print(f'Connected! IP: {ip_address}')
    cam = init_camera(CURRENT_FRAME_SIZE, CAM_PIXEL_FORMAT, XCLK_FREQ)
    html_content = generate_html()
    addr = socket.getaddrinfo('0.0.0.0', 80)[0][-1]
    s = socket.socket()
    s.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
    s.bind(addr)
    s.listen(2)
    
    while True:
        try:
            client, addr = s.accept()
            _thread.start_new_thread(handle_client, (client, cam, html_content))
        except Exception:
            time.sleep(1)

main()

pip install esptool

cd "C:\Espressif\"

esptool --chip esp32s3 --port COM1 erase_flash

esptool --chip esp32s3 --port COM1 --baud 921600 write_flash -z 0x0 esp32s3_camera_1.27.bin

import esp32
print(esp32.mcu_temperature(), "C")