Raspberry Pi Zero VERY long transmit delay
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I asked this question before and didn't get any answer, so now I've done more testing and have a major clue.
I have a Raspberry Pi Zero running DireWolf that has a very long transmit delay. ?First, I do have all of the Pi OS updated to the latest and greatest. ?It has done this with BOTH DireWolf versions 1.3 AND 1.4.
What I see (and hear on the radio) is the transmitter is turned on with total silence transmitted for up to 8 seconds or so, then the packet burst and the transmitter gets turned off. ?Sometimes there is no delay, and quite often it is 5 seconds or more.
I had no problems when my sound USB device AND a wireless Ethernet were plugged into a USB Hub w/ Ethernet Hub.
When I removed that hub and all internet access, my problems begin again. ?I now have the sound device plugged into the Pi Zero through a 4" micro USB to USB adapter cable. ?Then the problem begins.
I have tried other USB sound devices with the same results.
I'm going to try putting the USB hub back in without the wireless USB device and see what happens, but it has a wired Ethernet port on it (but nothing plugged into that port).
Any hints on why the Pi Zero seems to need the USB hub w/ internet to function properly with DireWolf?
Since the Pi Zero in stand-alone digipeater configuration only requires 80 mA from my 12V supply (Yes, regulated down), this is perfect for the battery & solar portable digipeater... ?if it worked.
Thanks, Arnold KQ6DI-4
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