[AudioI] xoscope / Audioinjector Octo RCA integration

[Experimental Zeros]

First and foremost, super excited to finally have access to this product
and can't wait to have it running!

I would like to use this board to accurately measure amplitude at low
frequencies (between 45Hz and 65Hz) and all possible harmonics until the
8Khz band. I feel this board, from design specs and comments on the email
thread, is beyond capable of achieving this task.... I might need to short
cap/resistor filters, adjust Software/CODEC settings, and who knows what
else, but I might be able to pull it as-is!

Regardless, I was able to test the board thru audacity (which only access 4
out of the 6 channels correctly) and was hoping that after downloading
"xoscope", everything was going to fall in place, but did not: The Octo
board is/was not found, neither by default under the "File -> Device" tab,
nor by using the settings menu after choosing the "COMEDI" option (which I
am pretty sure isn't a valid option) and modifying its settings.

I would appreciate any assistance to get this setup running!.... I would
gladly take advice for a software alternative/s that allows me to use the
Octo board as an oscilloscope.... I'm currently looking at
pyaudio/matplotlib integration....

Thank you in advance.

EZ.

*** My setup: ***

$ aplay -l
**** List of PLAYBACK Hardware Devices ****
card 0: audioinjectoroc [audioinjector-octo-soundcard], device 0:
AudioInject-HIFI cs42448-0 [AudioInject-HIFI cs42448-0]
  Subdevices: 1/1
  Subdevice #0: subdevice #0

$ arecord -l
**** List of CAPTURE Hardware Devices ****
card 0: audioinjectoroc [audioinjector-octo-soundcard], device 0:
AudioInject-HIFI cs42448-0 [AudioInject-HIFI cs42448-0]
  Subdevices: 1/1
  Subdevice #0: subdevice #0

---

$ cat /etc/os-release
PRETTY_NAME="Raspbian GNU/Linux 10 (buster)"
NAME="Raspbian GNU/Linux"
VERSION_ID="10"
VERSION="10 (buster)"
VERSION_CODENAME=buster
ID=raspbian
ID_LIKE=debian
HOME_URL="http://www.raspbian.org/"
SUPPORT_URL="http://www.raspbian.org/RaspbianForums"
BUG_REPORT_URL="http://www.raspbian.org/RaspbianBugs"

---

$ dmesg | grep octo
[    9.025420] audioinjector-octo soc:sound: snd_soc_register_card failed
(-517) <---- Is this a problem?????

[   10.595578] Modules linked in: hci_uart btbcm bluetooth ecdh_generic ecc
8021q garp stp llc snd_soc_cs42xx8_i2c snd_soc_cs42xx8 regmap_i2c spidev
ftdi_sio brcmfmac usbserial brcmutil sha256_generic
snd_soc_audioinjector_octo_soundcard cfg80211 rfkill snd_soc_bcm2835_i2s
snd_soc_core snd_compress raspberrypi_hwmon snd_pcm_dmaengine i2c_bcm2835
snd_pcm bcm2835_codec(C) bcm2835_v4l2(C) bcm2835_isp(C) v4l2_mem2mem
snd_timer videobuf2_vmalloc bcm2835_mmal_vchiq(C) videobuf2_dma_contig
videobuf2_memops videobuf2_v4l2 spi_bcm2835 snd videobuf2_common videodev
mc vc_sm_cma(C) w1_gpio wire cn uio_pdrv_genirq uio fixed i2c_dev ip_tables
x_tables ipv6

[   10.597423] [<7f2576a4>] (devm_snd_soc_register_card [snd_soc_core])
from [<7f09662c>] (audioinjector_octo_probe+0x178/0x1c0
[snd_soc_audioinjector_octo_soundcard])

[   10.597464] [<7f0964b4>] (audioinjector_octo_probe
[snd_soc_audioinjector_octo_soundcard]) from [<80713618>]
(platform_drv_probe+0x58/0xa8)
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