[GreenKeys] Teletype 32-ASR / Arduino vs Raspberry Pi

[epvgk at limpoc.com]

On Tue, Jun 11, 2013 at 02:44:27PM -0700, epvgk at limpoc.com wrote:
> On Tue, Jun 11, 2013 at 06:40:25PM -0300, Javier Albinarrate wrote:
> > Tony, and ?that is how you learnt Spanish? ;)
> > 
> > Trammell, great little board you have there, I have been using a PIC
> > based one for some time (old laptop with COM port died), which works
> > just fine for sending and even for keyboard writing, but falls
> > appart when reading from tape, because PICs have no native 5 bits
> > data width support for the UART... terribly annoying. I then started
> > looking for Arduino, and got a couple boards, one with Ethernet to
> > play, however... I spent nearly $35 for the boards now I feel I have
> > simply burnt that money as I am buying a Rapsberry Pi for $45.
> > 
> > According to the Raspberry PI wiki/specs the secondary UART supports
> > both low speeds, as well as 5 bits data width.
> > And the thing has ethernet, USB, HDMI, TV out, SD card, can use a
> > WiFi, or Bluethooth dongle, has 512MB RAM, has many IO pins to use
> > (like relays for turning the TTY on, or buttons for predefined
> > commands, etc), and all that for just a couple more bucks than the
> > Arduino. That has been making me wonder WHY ON EARTH I spent time
> > with the PICs and Arduino...
> > 
> > Has anyone here tried it?
> > 
> > Regards!
> > 
> > Javier
> 
> Javier --
> 
> Yes, it works on raspberry pi with the builtin serial port. There may be some
> fiddling around but it only took me a half hour or so to get heavymetal working. 
> 
> eric

Oh, I guess I should mention that the linux kernel doesn't support or know anything
about the 45.45 baud speed; I think had to modify the linux kernel to allow the speed, 
but the hardware is capable of generating that baud rate. 

eric

> 
> > -----Original Message----- From: tony.podrasky
> > Sent: Tuesday, June 11, 2013 5:18 PM
> > To: greenkeys at mailman.qth.net
> > Subject: Re: [GreenKeys] Teletype 32-ASR
> > 
> > I wrote a program to convert ASCII to ITA#2 so
> > that I could print out my e-mail on the 28-KSR.
> > 
> > I got an extra question mark and installed it
> > in the typebox where the upper-case BLANK is.
> > And I put it in up-side-down.
> > 
> > When the program had to translate a non-ITA#2
> > character, it would just print the up-side-down
> > question mark and I knew that there was a
> > character that couldn't be translated.
> > 
> > UE,
> > W6ESE - tony
> > NNNN
> > ZCZC
> > 
> > 
> > On 06/11/2013 01:08 PM, Trammell Hudson wrote:
> > >On Jun 11 2013 1:58 PM, tony.podrasky wrote:
> > >>What does the interface do about the non ITA#2
> > >>characters when it receives them?
> > >
> > >It eats them for now.  Any suggestions for better mappings?
> > >
> > 
> > -- 
> > Tony J. Podrasky | Inventions reached their limit long ago,
> >                  | and I see no hope for further development.
> >                  |
> >                  |         -Julius Frontinus, 1st century A.D.
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