Linux-Hams archive - June 1997: Re: SCC problem...

Re: SCC problem...

Richard Adams (fkdvi@newham.gov.uk)
Mon, 9 Jun 1997 09:22:47 +0000 (GMT)

According to Luca Palazzo, While burning my cpu.:
>
> I compiled 2.0.30 with scc support in the kernel (not as module) and i've
> setted up /etc/z853...conf file.
> This is the configuration file:
> chip 1
> data_a 0x300 # data port A
> ctrl_a 0x304 # control port A
> data_b 0x301 # data port B
> ctrl_b 0x305 # control port B
> irq 5 # IRQ No. 5 (#)
> pclock 9830400 # clock (+)
> board BAYCOM # hardware type (*)
> escc no # enhanced SCC chip? (8580/85180/85280)
> (*)
> vector no # latch for interrupt vector ($)
> special no # address of special function register (*)
> option 0 # option to set via sfr (*)

Seems you are missing the following.
device /dev/scc0
now you can define the speed, clock and mode "PER" device, you
can also define "bufsize" and the amount of buffers.
RXBUFFERS 8
TXBUFFERS 8
BUFSIZE 384
are the defaults.

> speed 1200 # 1200 baud
> clock dpll # clock source: use the dpll
> mode nrzi # normal NRZI operation
> #
> # Level 1 parameters
> #
> txdelay 36 # You should know about these already!
> persist 64
> slot 8
> tail 8
> fulldup 0
> wait 12
> min 3
> maxkey 7
> idle 3
> maxdef 120
> group 0
> txoff off
> softdcd off # use software dcd
>
With the ifconfig command you can now assign a callsign, which is in
/etc/ax25/axports.
More infomation can be found in z8530drv-2.4/doc/scc_eng.doc

> I can see dcd's led lighting but i cannot read anything on listen or with
> sccstat i've no pkts received....
>
You will also need z8530drv-2.4c.dl1bke.tar.gz to work together with kernel
2.0.30.

> What may be the problem??

This "might" be your problem.!!

> Thanks in adavnce
> Luca

-- 
Regards Richard, 73.              | "I see" said the blind man to his
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smtp  rqsjkg@tu-dresden.de      | "Yes" Linux AX25. NET/ROM, "I have heard
inet  gcjnbh@v9f85d3.wi-com.jp |  that what you see is what you get".