(02-05-2021, 03:17 PM)TheOldPresbyope Wrote: @steven4build 

If you are using only the MPD renderer then you have a chance. If you are using alternative renderers which are separate from MPD, such as Bluetooth (in), Airplay, Spotify, UPnP, etc., then many state changes will be difficult or impossible to detect.

As a start, have a look at the moOde code for the LCD update engine (configured via System Config) and also at the MPD Protocol documentation about querying MPD's status, e.g, the idle command.

Regards,
Kent

(02-05-2021, 02:55 PM)steven4build Wrote: Hello everyone,

I'm new to this community and have recently discovered Moode.

My project:
I'm building a smart speaker that works on a Raspberry Pi Zero W. The speaker also has a WS2812b LED-strip and some buttons for like play/pause, next/previous track.

I got the button part working with a python script that executes commands like this:

Code:

import RPi.GPIO as GPIO
import time
import os
GPIO.setwarnings(False)
GPIO.setmode(GPIO.BOARD)
GPIO.setup(16, GPIO.IN, pull_up_down=GPIO.PUD_UP)

while True: # Run forever
   input_state = GPIO.input(16)
   if input_state == GPIO.LOW:
       print("Button was pushed!")
       os.system("mpc toggle")
       time.sleep(0.2)

for the LED-strip part, I want to display some animations when; song changes, raising of lowering volume (with current percentage), changing sources, etc.


So for example when a song ends and it autoplays to the next one, it should display an animation on the LED-strip.

is there a way to check for statechanges for these situations?
I've read some form posts on the subject, but can't really find a clean solution.

(02-05-2021, 10:04 PM)Tim Curtis Wrote:

(02-05-2021, 02:55 PM)steven4build Wrote: Hello everyone,

I'm new to this community and have recently discovered Moode.

My project:
I'm building a smart speaker that works on a Raspberry Pi Zero W. The speaker also has a WS2812b LED-strip and some buttons for like play/pause, next/previous track.

I got the button part working with a python script that executes commands like this:

Code:

import RPi.GPIO as GPIO
import time
import os
GPIO.setwarnings(False)
GPIO.setmode(GPIO.BOARD)
GPIO.setup(16, GPIO.IN, pull_up_down=GPIO.PUD_UP)

while True: # Run forever
   input_state = GPIO.input(16)
   if input_state == GPIO.LOW:
       print("Button was pushed!")
       os.system("mpc toggle")
       time.sleep(0.2)

for the LED-strip part, I want to display some animations when; song changes, raising of lowering volume (with current percentage), changing sources, etc.


So for example when a song ends and it autoplays to the next one, it should display an animation on the LED-strip.

is there a way to check for statechanges for these situations?
I've read some form posts on the subject, but can't really find a clean solution.

Have a look in System Config for the GPIO button handler, Metadata file and LCD update engine.

Regarding the LCD update engine, you would edit the required script /var/local/www/commandw/lcdup.py to parse the metadata file /var/local/www/currentsong.txt and do whatever is needed to control your peripheral device. This file is updated within 3 secs anytime playback state changes. The WebUI does not have to be running.

An important aspect of the lcdup.py script is that it must not contain a while loop since the LCD update engine provides event based execution of the script via an inotify wait on the currentsong.txt file.

(02-06-2021, 07:49 PM)bitlab Wrote: @steven4build if your working on a python script, you could use the exellent mpd2 python package.
It provides all the mpd information you ever need :-)

Example (little bit messy) script that use an oled display, a few buttons andthe mpd lib is here.

Quote:Note

Thanks to the developers, you can also send these commands just from your browser, for more information for how to do this, see this post.