https://github.com/myraspberry/pico_w_mqtt_pub_sub

subscription loop SLOW
https://github.com/myraspberry/pico_w_mqtt_pub_sub

Last synced: about 1 month ago
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subscription loop SLOW

• Host: GitHub
• URL: https://github.com/myraspberry/pico_w_mqtt_pub_sub
• Owner: MyRaspberry
• Created: 2023-12-22T08:07:16.000Z (over 2 years ago)
• Default Branch: main
• Last Pushed: 2023-12-22T23:13:01.000Z (over 2 years ago)
• Last Synced: 2025-01-17T23:31:45.186Z (over 1 year ago)
• Language: Python
• Size: 959 KB
• Stars: 0
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

          
# PICO_W_MQTT_pub_sub

 subscription loop SLOW

on a **PICO W with CP829**

a minimal MQTT 

* publish every minute

* subscribe ( and loop ) to remote commands to drive the board LED : **MQTT BLINKY**

PROBLEM: the 'mqtt_client.loop()' waits over 1 second and blocks the MAIN timer loop

______________

**test results:** how many seconds need a counter to 1.000.000

```

# JOB1M : 14.8 sec

# JOB1M + JOB1min : 26.5 sec

# JOB1M + JOB1min + JOB1sec : 38.1 sec

# JOB1M + JOB1min + JOB1sec + JOBt : 56.2 sec

# and enable in JOB1sec mqtt_client.loop(timeout=0.01) : 1524.1 sec

```

but **remote operation ( of board LED ) works**

[open ISSUE](https://github.com/adafruit/Adafruit_CircuitPython_MiniMQTT/issues/195)

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# on RPI4 is a 'mosquitto broker' running

use some alias to show the feed from the PICO_W and to drive commands ( pub to topic/set )

![Screenshot RPI4 ](/img/RPI4_MQTT.png)

# PICO_W MU Editor REPL

topic/set commands come through if there is a 'mqtt_client.loop()'

![Screenshot PICO_W IDE ](/img/PICOW_mqtt_test_pub_sub.png)

here show the problematic timing

![Screenshot PICO_W_IDE show time ](/img/PICOW_mqtt_test_pub_sub_loopdt.png)

______________

try on TLS again, not work CP829, 

______________

nuke flash **CP810** 

timing mqtt_client.loop() 0.001xxx sec

1Mloop 59.1 sec

TLS also not work, but copy in adafruit_minimqtt from  21.12.2022 OK

( a trick i used back then and found the files in my backup )

make set of new alias mqttxubR in RPI4 and show/operate **REMOTE broker**

![Screenshot REMOTE broker TLS ](/img/PICOW_mqtt_test_pub_sub_REMOTE_TLS.png)

if use it without timeout parameter:

![Screenshot PICO_W_IDE show time ](/img/PICOW_mqtt_test_pub_sub_REMOTE_TLS_client_loop_NoTimeSet_CP810.png)

______________

> more old info to this

[old TLS ISSUE](https://github.com/adafruit/circuitpython/issues/7606)

[work BLOG: upgrade to CP829 in HOLD for timing and memory issues](http://kll.byethost7.com/kllfusion01/infusions/articles/articles.php?article_id=225)

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