Serial cables

Mychaela Falconia falcon at ivan.Harhan.ORG
Sun Nov 8 16:14:35 CET 2015


David wrote:

> I have sysmocom PL2303-25 cable
>
> Certainly not extensively tested, but I did use it the flash the
> freerunner calypso on at least two occasions.
>
> I take it that this *ought* to be ok for use with the C139?

It should work just fine.  The only issue with these PL2303 cables is
that if are doing a *lot* of fw image transfers (flashing or fc-xram),
doing them at the standard baud rate of 115200 bps gets tiresome.  The
fancier cables DS and I were discussing allow you to do these flash
transfers at higher speeds - no real significance if you are only
going to do it once in a blue moon, but makes a big difference if you
are a developer and you need to flash an image to test every little
change.

As far as cable reliability, hopefully your Sysmocom PL2303 cable
won't have the same flakiness problem exhibited by the Sysmocom CP2102
I got through DS.  The good news is that the version of fc-loadtool in
fc-host-tools-r3 adds automatic CRC-32 verification after flash
program-bin operations, so any corrupted flash image transfer won't go
undetected.

M~


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