brain at jbrain.com
Mon May 22 23:57:58 CDT 2017
On 5/22/2017 8:41 PM, Ethan Dicks via cctalk wrote:
> Do you have a "traffic light"? I find them invaluable for diagnosing
> handshaking and TxD/RxD swaps.
Yep. constant low on TX.
> What worked was a serial port on a desktop. The first try.
It's entirely possible, but I put a scope on the TX line, and I see no
activity at all with the unit in DATA or TERM READY mode. The DATA LED
blinks, so I think I need to signal the Model 43 that it is "connected".
As has been suggested, I joined GreenKeys and asked if someone has a
similar setup that works, so I can replicate.
Worst case is that the driver board has issues, which at least will
narrow down my search.
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