Force music play on turn on

[tiago.trindade]

Hello,

I have my Moode setup on a RPi Zero 2 W with a Topping E50 USB DAC running inside a closet, connect to a Apple Home Kit AC-plug that I power on/off with my iPhone.

Everytime I power on this setup I have to manually open the closet to turn on the DAC (since it is USB powered).

The other option is to access Moode and put a song playing in MPD (it sends a signal to the DAC via USB and the DAC is auto-powered on).

Since I mainly use with Spotify Connect and did not want, every time I want to hear music, to 1) open the closet to power on the DAC or 2) open the web browser and enter Moode webpage to play a music in MPD and the stop it.

Is there any script that I can put on Moode "power-on" so that it "plays something on MPD for 2 seconds only"?

Thank you!

[Tim Curtis]

Why exactly doesn't the DAC turn on?

[Nutul]

Why exactly doesn't the DAC turn on?

From what I understand, the Apple Home plug powers on the Pi, which in turn can power the DAC on via the USB, but it looks like the USB is not live (5V I mean) until the Pi plays something... I don't think this is a prerogative of the Pi-Zero.

1. How do you manually turn the DAC on, then, by pressing a button on it? Is there the possibility that the Topping turns indeed ON, but in sleep-mode, and this can be changed in its settings?

2. How can you have the Pi play from Spotify if you do not cast something from your phone? Doesn't it (casting from the phone) force the Pi to play, and hence the DAC to wake up?

[tiago.trindade]

Why exactly doesn't the DAC turn on?

I think is a Topping thing. Even if I connect the DAC USB power cord on the wall, the DAC always "powers on at sleep mode".

The only way for it to wake up it so use the remote, click on the DAC power button, or send it some music.

The problem is that if I send it some music the MPD gives an error, and only plays after the second "attempt" - I think the moment MPD tries to send music the DAC is on sleep, and the time it takes to wake up is not fast enought (so the second time I try the DAC is already "on" and the music plays nicelly)

Here are the startup logs:

PHP Code:

20240106 192058 worker: --
20240106 192059 worker: -- Start moOde 8 series
20240106 192059 worker: --
20240106 192059 worker: Successfully daemonized
20240106 192059 worker: Wait for Linux startup...
20240106 192105 worker: Linux startup complete
20240106 192105 worker: Boot config backed up
20240106 192108 worker: Session loaded
20240106 192112 worker: Package holds applied
20240106 192113 worker: File check complete
20240106 192113 worker: Debug logging off
20240106 192113 worker: Reduced logging off
20240106 192113 worker: --
20240106 192113 worker: -- Audio debug
20240106 192113 worker: --
20240106 192113 worker: ALSA cards:  0:b1 | 1:E50 | 2:empty | 3:empty
20240106 192113 worker: MPD config:  1:E50 | mixer:none | cardnum:1
20240106 192113 worker: Mixer name:  none exists
20240106 192113 worker: Hdwr volume: controller not detected
20240106 192113 worker: --
20240106 192113 worker: -- System
20240106 192113 worker: --
20240106 192243 worker: Host:     pi4
20240106 192243 worker: Model:    Pi-Zero 2 W 1.0 512MB
20240106 192243 worker: moOde:    8.3.7 2023-12-07
20240106 192243 worker: RaspiOS:  11.6 Bullseye 64-bit
20240106 192243 worker: Kernel:   6.1.21 64-bit
20240106 192243 worker: MPD ver:  0.23.14
20240106 192243 worker: CPU gov:  ondemand
20240106 192243 worker: Userid:   pi
20240106 192243 worker: Homedir:  /home/pi
20240106 192243 worker: Timezone: Portugal
20240106 192243 worker: Keyboard: pt
20240106 192243 worker: USB boot: not available
20240106 192243 worker: File sys: expanded
20240106 192243 worker: HDMI out: off
20240106 192243 worker: Sys LED0: off
20240106 192243 worker: Sys LED1:  sysclass does not exist
20240106 192243 worker: --
20240106 192243 worker: -- Network
20240106 192243 worker: --
20240106 192243 worker: Eth: adapter does not exist
20240106 192244 worker: Wlan: adapter exists
20240106 192244 worker: Wlan: country PT
20240106 192244 worker: Wlan: SSID    myNet
20240106 192244 worker: Wlan: other   none
20240106 192244 worker: Wlan: router  off
20240106 192244 worker: Wlan: timeout up to 90 secs
20240106 192244 worker: Wlan: connect to myNet
20240106 192244 worker: Wlan: sleep   disabled
20240106 192244 worker: Wlan: method  dhcp
20240106 192244 worker: Wlan: address 192.168.50.151
20240106 192244 worker: Wlan: netmask 255.255.255.0
20240106 192244 worker: Wlan: gateway 192.168.50.1
20240106 192244 worker: Wlan: pri DNS 192.168.50.1
20240106 192244 worker: Wlan: domain  lan
20240106 192244 worker: --
20240106 192244 worker: -- Software update
20240106 192244 worker: --
20240106 192244 worker: Automatic check off
20240106 192244 worker: --
20240106 192244 worker: -- File sharing
20240106 192244 worker: --
20240106 192247 worker: SMB file sharing:  on
20240106 192247 worker: NFS file sharing:  off
20240106 192247 worker: DLNA file sharing: off
20240106 192247 worker: --
20240106 192247 worker: -- Audio config
20240106 192247 worker: --
20240106 192247 worker: MPD config:    update skipped (USB audio device)
20240106 192247 worker: Audio device:  E50
20240106 192247 worker: Formats:       S32_LE, SPECIAL, DSD_U32_BE
20240106 192247 worker: Mixer type     CamillaDSP
20240106 192247 worker: Mixer name     none exists
20240106 192247 worker: Hdwr volume:   controller not detected
20240106 192247 worker: ALSA card:     1
20240106 192247 worker: ALSA mode:     Default
20240106 192247 worker: ALSA loopback: off
20240106 192248 worker: CamillaDSP:    VLS_805_v1_ALIGNED_ESTIMATE
20240106 192248 worker: Renderers:     active flags reset
20240106 192248 worker: --
20240106 192248 worker: -- MPD startup
20240106 192248 worker: --
20240106 192250 worker: MPD service:        started
20240106 192250 worker: MPD port 6600:      accepting connections
20240106 192250 worker: MPD ALSA Default:   on
20240106 192250 worker: MPD ALSA Bluetooth: off
20240106 192250 worker: MPD HTTP Server:    off
20240106 192250 worker: MPD crossfade:      off
20240106 192250 worker: MPD ignore CUE:     yes
20240106 192250 worker: MPD CDSP volsync:   on
20240106 192250 worker: MPD CDSP volrange:  60 dB
20240106 192250 worker: --
20240106 192250 worker: -- Music sources
20240106 192250 worker: --
20240106 192250 worker: USB auto-mount: udisks-glue
20240106 192250 worker: USB drives:     no drives found
20240106 192250 worker: NAS source:     Downloads
20240106 192250 worker: NAS source:     FLAC
20240106 192321 worker: NAS mount:      mount all submitted
20240106 192321 worker: --
20240106 192321 worker: -- Feature availability
20240106 192321 worker: --
20240106 192321 worker: Input select:    available, src MPD, out E50
20240106 192330 worker: Bluetooth:       started, PA started, ALSA mode Default
20240106 192330 worker: AirPlay:         started
20240106 192330 worker: Spotify Connect: started
20240106 192330 worker: Squeezelite:     available
20240106 192330 worker: RoonBridge:      not installed
20240106 192330 worker: Multiroom:       available
20240106 192330 worker: UPnP client:     available
20240106 192330 worker: GPIO buttons:    available
20240106 192330 worker: Stream recorder: n/a
20240106 192330 worker: HTTPS-Only mode: n/a
20240106 192330 worker: --
20240106 192330 worker: -- Volume levels
20240106 192330 worker: --
20240106 192332 worker: Volume knob:      0
20240106 192332 worker: Saved MPD volume: 0
20240106 192332 worker: Saved SRC volume: 0
20240106 192332 worker: Hdwr volume:      controller not detected
20240106 192332 worker: --
20240106 192332 worker: -- Peripherals
20240106 192332 worker: --
20240106 192335 worker: Local display:   off
20240106 192335 worker: On-screen kbd:   off
20240106 192335 worker: Rotary encoder:  off
20240106 192335 worker: USB volume knob: off
20240106 192335 worker: LCD updater:     off
20240106 192335 worker: --
20240106 192335 worker: -- Miscellaneous
20240106 192335 worker: --
20240106 192335 worker: Auto-CoverView:    off
20240106 192335 worker: CoverView timeout: Never
20240106 192335 worker: Auto-shuffle:      off
20240106 192335 worker: Auto-play:         off
20240106 192335 worker: Web SSH server:    on
20240106 192335 worker: Maintenance task:  360 mins
20240106 192335 worker: Current view:      reset to Playback
20240106 192335 worker: Session check:     ok
20240106 192335 worker: --
20240106 192335 worker: -- Startup complete 
20240106 192335 worker: --
20240106 192335 waitWorker(): Start cdsp-configeditor, w_active=0
20240106 192335 waitWorker(): End   cdsp-configeditor, w_active=0
20240106 192335 waitWorker(): Start cdsp-configeditor, w_active=0
20240106 192335 waitWorker(): End   cdsp-configeditor, w_active=0
20240106 192335 worker: Mount monitor:    off
20240106 192335 worker: MPD monitor:      off
20240106 192336 worker: Watchdog monitor: started
20240106 192336 worker: Responsiveness:   Default
20240106 192336 worker: Ready
20240106 192336 waitWorker(): Start sys-config, w_active=0
20240106 192336 waitWorker(): End   sys-config, w_active=0
20240106 192406 waitWorker(): Start sys-config, w_active=0
20240106 192406 waitWorker(): End   sys-config, w_active=0 


[tiago.trindade]

Why exactly doesn't the DAC turn on?

From what I understand, the Apple Home plug powers on the Pi, which in turn can power the DAC on via the USB, but it looks like the USB is not live (5V I mean) until the Pi plays something... I don't think this is a prerogative of the Pi-Zero.

1. How do you manually turn the DAC on, then, by pressing a button on it? Is there the possibility that the Topping turns indeed ON, but in sleep-mode, and this can be changed in its settings?

2. How can you have the Pi play from Spotify if you do not cast something from your phone? Doesn't it (casting from the phone) force the Pi to play, and hence the DAC to wake up?

Correct!

1) Yes, via button or remote, and it turns ON in "sleep-mode".

2) That's the main problem I have. I can connect to "Spotify Connect", but when I press play on Spotify it "drops" the connection to moode in Spotify Connect (but the DAC wakes up at that moment). But then I am forced to login into moode and restart the "Spotify Connect" render service in order to be able to connect again from the iPhone to Spotify in order to play music.

[Tim Curtis]

Why exactly doesn't the DAC turn on?

From what I understand, the Apple Home plug powers on the Pi, which in turn can power the DAC on via the USB, but it looks like the USB is not live (5V I mean) until the Pi plays something... I don't think this is a prerogative of the Pi-Zero.

1. How do you manually turn the DAC on, then, by pressing a button on it? Is there the possibility that the Topping turns indeed ON, but in sleep-mode, and this can be changed in its settings?

2. How can you have the Pi play from Spotify if you do not cast something from your phone? Doesn't it (casting from the phone) force the Pi to play, and hence the DAC to wake up?

Correct!

1) Yes, via button or remote, and it turns ON in "sleep-mode".

2) That's the main problem I have. I can connect to "Spotify Connect", but when I press play on Spotify it "drops" the connection to moode in Spotify Connect (but the DAC wakes up at that moment). But then I am forced to login into moode and restart the "Spotify Connect" render service in order to be able to connect again from the iPhone to Spotify in order to play music.

The Spotify Connect implementation (librespot) doesn't have a failover capability if the connection to the audio device gets interrupted, it just crashes or hangs. This failure case doesn't occur for most audio devices because they maintain their connection to the host.

[tiago.trindade]

Why exactly doesn't the DAC turn on?

From what I understand, the Apple Home plug powers on the Pi, which in turn can power the DAC on via the USB, but it looks like the USB is not live (5V I mean) until the Pi plays something... I don't think this is a prerogative of the Pi-Zero.

1. How do you manually turn the DAC on, then, by pressing a button on it? Is there the possibility that the Topping turns indeed ON, but in sleep-mode, and this can be changed in its settings?

2. How can you have the Pi play from Spotify if you do not cast something from your phone? Doesn't it (casting from the phone) force the Pi to play, and hence the DAC to wake up?

Correct!

1) Yes, via button or remote, and it turns ON in "sleep-mode".

2) That's the main problem I have. I can connect to "Spotify Connect", but when I press play on Spotify it "drops" the connection to moode in Spotify Connect (but the DAC wakes up at that moment). But then I am forced to login into moode and restart the "Spotify Connect" render service in order to be able to connect again from the iPhone to Spotify in order to play music.

The Spotify Connect implementation (librespot) doesn't have a failover capability if the connection to the audio device gets interrupted, it just crashes or hangs. This failure case doesn't occur for most audio devices because they maintain their connection to the host.

True!

That is why I have to mannualy play on MPD (because it has a failover capability) in order to "wake up" the DAC. 
And after that I can use Spotify Connect without problems.

Is there any way/script to force this "MPD play" on startup, for a limit of time/songs (I could create and "empty song" just for that)?

[Nutul]

Why exactly doesn't the DAC turn on?

From what I understand, the Apple Home plug powers on the Pi, which in turn can power the DAC on via the USB, but it looks like the USB is not live (5V I mean) until the Pi plays something... I don't think this is a prerogative of the Pi-Zero.

1. How do you manually turn the DAC on, then, by pressing a button on it? Is there the possibility that the Topping turns indeed ON, but in sleep-mode, and this can be changed in its settings?

2. How can you have the Pi play from Spotify if you do not cast something from your phone? Doesn't it (casting from the phone) force the Pi to play, and hence the DAC to wake up?

Correct!

1) Yes, via button or remote, and it turns ON in "sleep-mode".

2) That's the main problem I have. I can connect to "Spotify Connect", but when I press play on Spotify it "drops" the connection to moode in Spotify Connect (but the DAC wakes up at that moment). But then I am forced to login into moode and restart the "Spotify Connect" render service in order to be able to connect again from the iPhone to Spotify in order to play music.

The Spotify Connect implementation (librespot) doesn't have a failover capability if the connection to the audio device gets interrupted, it just crashes or hangs. This failure case doesn't occur for most audio devices because they maintain their connection to the host.

True!

That is why I have to mannualy play on MPD (because it has a failover capability) in order to "wake up" the DAC. 
And after that I can use Spotify Connect without problems.

Is there any way/script to force this "MPD play" on startup, for a limit of time/songs (I could create and "empty song" just for that)?

There is an option, in the MPD section of AUDIO settings: "Autoplay after start". I believe that if you leave a 3-seconds silence track in the queue, at every startup it will play. You can give it a try, you can use any track for now, if you don't have any empty; that will also notify you when the system is ready to accept Spotify... maybe a short jingle...
Give it a try.