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Wheezy "freezes" with DAC+

sailor_max

December 10, 2014 16:53

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Hello,

I have installed the DAC+ on a RASPI B+
the board is supposed to run with the piradio from

http://bobrathbone.com/raspberrypi_radio.htm

Situation is as follows:

Kernel update done (3.12.34+)

/etc/modprobe.d/raspi-blacklist.conf reads

blacklist spi-bcm2708
#blacklisti2c-bcm2708
#blacklist snd-soc-bcm512x
#blacklist snd-soc-wm8804

/etc/modules reads

#snd-bcm2835
#snd_soc_bcm2708
snd_soc_bcm2807_i2s
bcm2708_dmaengine
snd_soc_hifiberry_dacplus

/etc/mpd.conf reads

type „alsa“
name “MyName“
device “hw:0”
mixer_control “Playback Digital”
mixer_device “hw:0”
mixer_index “0”
dsd_usb “yes”

/etc/asound.conf reads

pcm.!default {
type hw card 0
}
ctl.!default {
type hw card 0
}


when booting, the green LED on the DAC switches on but the RASPI is freezing (no response on ping, no remote login). When removing the DAC+ from the header, the RASPI behaves perfectly normal.

Any thoughts?

Matthias

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10 comments

• 0
  
  John Hagensieker December 11, 2014 01:58

  Can you post the specs of your power brick? Are you overclocked?
• 0
  
  sailor_max December 11, 2014 08:09

  Currently, there is no overclocking
  I tried different power supplies wis similar behaviour
  a)
• 0
  
  sailor_max December 11, 2014 08:12

  Currently, there is no overclocking
  I tried different power supplies with similar behaviour (freeze as described above)
  a) external 5V/3A regulated
  b) USB Hub at monitor
  c) USB port at PC
  d) USB power supply rated 5V 1000mA
  
  regards Matthias
  
• 0
  
  HiFiBerry team December 11, 2014 08:14

  Hi,
  
  to get and idea if this is a software or hardware problem, please use our test image from here:
  http://www.hifiberry.com/guides/sd-card-images/
  
  Please check if this works.
  
  Best regards
  Daniel
• 0
  
  sailor_max December 11, 2014 08:28

  It is SW related, sine wave plays w/o problem
  
  Matthias
  
• 0
  
  HiFiBerry team December 11, 2014 08:46

  Did you use Noobs as the basis? If yes, please reinstall from a pure Rasbian (without Noobs). We have seen several problems with Noobs.
  Are you using LIRC? If yes, check that it is not using the GPIOs that the HiFiBerry DAC+ uses.
  
  Best regards
  Daniel
• 0
  
  sailor_max December 11, 2014 09:59

  Ok, getting closer.
  As stated above, I'm using wheezy, no NOOBS, LIRC ist not installed.
  Nevertheless, the piradio SW uses some GPIO ports to drive an LCD and rotary encoders (currently not connected). So, which ports are blocked by the Hifiberry?
  Would be kind of need to read this in the product documentation ;-(
  
  regards Matthias
  
• 0
  
  HiFiBerry team December 11, 2014 12:16

  GPIO 18-21 are used and the I2C pins.
  
  Best regards
  Daniel
• 0
  
  sailor_max December 11, 2014 17:23

  Hi Daniel,
  
  thanks for the quick support! I have changed the Portpins in the piradio SW, the system is now up and running.
  I have wasted nearly 2 days for this issue - therefore my feedback to the Hifiberry i.e. its documentation is really negative.
  
  I would only recommend it in an SW only environment.
  
  My expectations to a product in the diy environment like the Raspberry are completely different!
  Published and well documented interface descriptions (HW and SW), schematics, eagle files ... are a must here and competition is setting the benchmark. It is a pitty that a nice piece of HW can only be integrated in project hardware this cumbersome way.
  
  Regards Matthias
• 0
  
  HiFiBerry team December 11, 2014 17:29

  Dear Matthias,
  
  thanks for the feedback. We will work on the documentation. However we will not release any schematics or PCB design files. We don't think this is necessary for users.
  
  Best regards
  Daniel