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Digi Pro 2 - overlay config line being overwritten

John B

February 05, 2022 16:04

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I posted before about issues getting my Digi Pro 2 to work

I have made some "progress" but still have issues.

I am running HifiBerry OS.

When I installed the Digi2 Pro hat the config.txt file was updated but the overlay it configured was

dtoverlay=hifiberry-dac

I edited the config.txt file and commented out this line and inserted

dtoverlay=hifiberry-digi-pro

as per the online documentation, but when I reboot this gets overwritten with the DAC overlay again

I have added the line to disable the EEPROM

force_eeprom_read=0

My config.txt file now looks like this

# Please note that this is only a sample, we recommend you to change it to fit
# your needs.
# You should override this file using a post-build script.
# See http://buildroot.org/manual.html#rootfs-custom
# and http://elinux.org/RPiconfig for a description of config.txt syntax

# We always use the same names, the real used variant is selected by
# BR2_PACKAGE_RPI_FIRMWARE_{DEFAULT,X,CD} choice
start_file=start.elf
fixup_file=fixup.dat

kernel=zImage

# To use an external initramfs file
#initramfs rootfs.cpio.gz

# Disable overscan assuming the display supports displaying the full resolution
# If the text shown on the screen disappears off the edge, comment this out
disable_overscan=1

force_eeprom_read=0

# How much memory in MB to assign to the GPU on Pi models having
# 256, 512 or 1024 MB total memory
gpu_mem_256=100
gpu_mem_512=100
gpu_mem_1024=100
# Enable I2C and SPI
dtparam=i2c=on
dtparam=spi=on
dtoverlay=i2c-gpio,i2c_gpio_sda=0,i2c_gpio_scl=1
dtoverlay=vc4-fkms-v3d,audio=off
# dtoverlay=hifiberry-dac
dtoverlay=hifiberry-dac

and the results of aplay -l

**** List of PLAYBACK Hardware Devices ****
card 0: sndrpihifiberry [snd_rpi_hifiberry_dac], device 0: HifiBerry DAC HiFi pcm5102a-hifi-0 [HifiBerry DAC HiFi pcm5102a-hifi-0]
  Subdevices: 1/1
  Subdevice #0: subdevice #0

Can I get further advice 

Thanks

John

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5 comments

• -1
  
  HiFiBerry team February 06, 2022 07:05

  This means that your Digi isn't detected. There is some kind of hardware problem. It's often either some other hardware connected to the GPIO, defective Pi GPIOs or a poor quality power supply.

• 0
  
  John B February 06, 2022 11:42

  Hi,

  that really does not help me much

  1. Its an official Pi power supply

  2. This is my second Digi2 Pro , so if the replacement is faulty then there are quality control manufacturing issues

  3. How do It test whether its a GPIO issue. I don't have electronic testing equipment so is there a software based method ? I don't have an alternative hat to try either. There is no other hardware attached to the Pi other than the Digi2 Pro hat. 

  If its your hat that is faulty then I will have to go back to Pi Hut a second time for a replacement !

  Please advise

  Thanks

  John 

  

• 0
  
  HiFiBerry team February 06, 2022 13:31

  We see more defective Pi's than defective HiFiBerry boards. You can't test the Pi in software. Replacing the Digi again doesn't make sense. Try another Pi. 

• 0
  
  Thierry November 03, 2022 07:07

  Hi,

  I had a similar issue with my Pi4 and a Digi2 Pro : eventhough I manually adjusted /boot/config.txt to have dtoverlay=hifiberry-digi-pro (as per the documentation), it was overwritten when rebooting.

  After digging around in /opt/hifiberry/bin, I could see that /opt/hifiberry/bin/detect-hifiberry didn't include "Digi2 Pro".
  I just added another test case:

  if [ "$HATCARD" == "Digi2 Pro" ]; then
          DETECTED="digi-pro"
          EEPROM=0
          return
  fi

  And : voila ! it works now.

  Hifiberry.version = 20221026

• 0
  
  HiFiBerry team November 03, 2022 07:35

  Thierry: Thanks for this. We'll include this in the next release.