Smikkelbakje/J2S1-Kobuki
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receive images from mqtt server and display on endpoint

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This commit is contained in:
Sam Hos
2024-12-03 12:06:12 +01:00
parent b93a5f2dca
commit 9e07a243ea
1 changed files with 17 additions and 4 deletions
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21
src/Python/flask/web/app.py
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@@ -1,18 +1,24 @@
from flask import Flask, request, render_template, jsonify from flask import Flask, Response, request, render_template, jsonify
import paho.mqtt.client as mqtt import paho.mqtt.client as mqtt
app = Flask(__name__) app = Flask(__name__)
def on_message(client, userdata, message): def on_message(client, userdata, message):
global kobuki_message #set scope for this variable global kobuki_message, latest_image
kobuki_message = str(message.payload.decode("utf-8")) if message.topic == "kobuki/data":
kobuki_message = str(message.payload.decode("utf-8"))
elif message.topic == "kobuki/cam":
latest_image = message.payload
# Create an MQTT client instance # Create an MQTT client instance
mqtt_client = mqtt.Client() mqtt_client = mqtt.Client()
mqtt_client.username_pw_set("server", "serverwachtwoordofzo") mqtt_client.username_pw_set("server", "serverwachtwoordofzo")
mqtt_client.connect("145.92.224.21/ws", 80, 60) mqtt_client.connect("localhost", 1884, 60)
mqtt_client.loop_start() mqtt_client.loop_start()
mqtt_client.subscribe("kobuki/data") mqtt_client.subscribe("kobuki/data")
mqtt_client.subscribe("kobuki/cam")
mqtt_client.on_message = on_message # this lines needs to be under the function definition otherwise it cant find which function it needs to use mqtt_client.on_message = on_message # this lines needs to be under the function definition otherwise it cant find which function it needs to use
@app.route('/') @app.route('/')
@@ -43,6 +49,13 @@ def move():
def data(): def data():
return kobuki_message return kobuki_message
@app.route('/image')
def image():
global latest_image
if latest_image is not None:
return Response(latest_image, mimetype='image/jpeg')
else:
return "No image available", 404