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 Robotics / Handy Board / 8622
8621  |  8623
Subject: 
Re: Echoing printf to terminal
Newsgroups: 
lugnet.robotics.handyboard
Date: 
Mon, 25 Feb 2002 17:52:54 GMT
Viewed: 
6876 times
  
i don't know this offhand.  you'd have to assemble the pcode source
and look and see where it ends up.

it's a ring buffer tho' so it might be a little tricky.  you'd be
better off patching the lcd print interrupt routine (it unspools
one char per ms to the lcd).

fred

On Monday, February 25, 2002, at 12:44  PM, Viktor Dvorak wrote:

Dear Fred Martin,

    please can you tell us the hex address from where is the (printf)
composed string printed to LCD.
I suppose it is near 0xC100. I use my own assembler routines to
send data to
PC using another COM port.
The routines using PA7 are simple, the baud rate till 38400 Baud 8N1
protocol is possible.

    Many thanks

    Viktor Dvorak
    dvorakvik@seznam.cz

----- Original Message -----
From: "Fred G. Martin" <fredm@alum.mit.edu>
To: <lugnet.robotics.handyboard@lugnet.com>
Sent: Monday, February 25, 2002 6:17 PM
Subject: Re: Echoing printf to terminal


this is non-trivial.  The -loopback option isn't what you think it
is; it's a flag telling the downloader that the low-level serial
ckt has a hardware echo.  it's relevant to an earlier 6811 design
(the mini board), not the HB design.

this would require code changes to both the runtime pcode and the
desktop side.  when randy and i were design the IC system we
thought about this feature -- there may be the beginnings of some
hooks in the code -- but it was never implemented.

fred


On Monday, February 25, 2002, at 11:58  AM, Levent Besik wrote:

Hi folks,

We have been looking for a way to echo the printf()s on LCD to the IC
terminal on host computer (using 2.86 - freeware). IC has a -loopback
option, but apparently that only works for HB rev 1.5 and earlier. Is
there a way to do this with the new rev 2.21 HB? From what we
understand, the HB error messages are echoed back to the terminal, so
we're thinking that there must be a way.

If this involves a code change in IC, we are also ready to tackle
that.
Any help/hack/suggestion is appreciated.

Thanks and have a great day!
-Levent








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