Re: No UDRC listed after aplay -l

Paul Johnson
 

Peter,

I am using the UDRC with a PI3 and the standard micro-USB supply
that came with the PI3. Works just fine. No extra power supply
connections required.

pi@pi3:~ $ uname -a
Linux pi3 4.4.10-v7+ #1 SMP Tue May 17 11:18:40 UTC 2016 armv7l
pi@pi3:~ $ aplay -l
**** List of PLAYBACK Hardware Devices ****
card 0: ALSA [bcm2835 ALSA], device 0: bcm2835 ALSA [bcm2835 ALSA]
Subdevices: 8/8
Subdevice #0: subdevice #0
Subdevice #1: subdevice #1
Subdevice #2: subdevice #2
Subdevice #3: subdevice #3
Subdevice #4: subdevice #4
Subdevice #5: subdevice #5
Subdevice #6: subdevice #6
Subdevice #7: subdevice #7
card 0: ALSA [bcm2835 ALSA], device 1: bcm2835 ALSA [bcm2835
IEC958/HDMI]
Subdevices: 1/1
Subdevice #0: subdevice #0
card 1: udrc [udrc], device 0: Universal Digital Radio Controller
tlv320aic32x4-hifi-0 []
Subdevices: 1/1
Subdevice #0: subdevice #0


regards

Paul VE7DHM

On Mon, 2016-07-04 at 07:39 +1000, Peter Schrader wrote:
HI Steve,



Thanks for the quick reply, the micro-USB supply to the PI3 is 3A
capable.



The instructions are not that precise on whether the UDRC requires a
separate supply, did I miss something fundamental here?



Can I surmise that there are a few supply options

1. UDRC draws power from the PI3 40way GPIO?

2. PI3 is powered from the UDRC when 12VDC is connected to the
+12V pad adjacent to the Dsub15 connector?

3. Both are required?



Cheers,

Peter – VK4EA



From: main@nw-digital-radio.groups.io
[mailto:main@nw-digital-radio.groups.io] On Behalf Of Steve Sampson
Sent: Monday, 4 July 2016 1:52 AM
To: main@nw-digital-radio.groups.io
Subject: Re: [nw-digital-radio] No UDRC listed after aplay -l



Are you using a wall wart or the 12 volts on the UDRC? If the wall
wart, is it a 2 amp or better?




Just an idea...



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