[ts-7000] peek/poke question about rs485 on 7260

["linuxmill" <>]

I have a 7260 in which I want to enable RS485FD prior to starting a
service that provides a modbus RTU interface.  

A cat of /proc/SBC/info  shows the following:

BoardID:  TS-7260
RS485: yes
AnalogToDigital no
Auto485:  yes

I tried using poke16 to set (the bit for Auto485 Full Duplex mode) as
follows:

poke16 0x22C00000 0x01

but don't see any difference in the serial port behavior.

Also, I'm confused about the function of peek:
if I do a peek32 (32 bits, ostensibly), then why do I get a return
value of something like 0x700070  ?   that's a lot more than 32 bits
worth of data.

I have not been able to find documentation that clearly tells me how
to turn on RS485 on com2 in full duplex mode so that I can start the
software that uses this feature.

There are lots of clues, but I can't tell how actually get this job done.

Thanks for any help you can provide.

Jim


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