[GreenKeys] Volpe board figs/letters function?

[Jordan Spencer Cunningham]

Sorry I haven't responded to your private message. I've not had much time to do so. It is not for a lack of desire-- just a lack of time and sanity. I'll do a quick response via mobile here while I have the chance.

The easiest way to ring a bell from the computer is to send the BEL character (or ALERT-- same thing, different nomenclature). Modern charsets still make use of this, so the computer "knows" what it is. Many systems will still pllay an alert sound or flash the window or something. The Volpe board will accordingly go into FIGS and issue the bell encoding on the loop, too.

You have to send the character using a hex byte, however. There are a few ways to do this. If using something that understands these bytes such as printf, you can issue the raw byte. That hex byte is "0x07". You can also use an escape sequence on most *nixes, which is "\a". I believe ^G (that is-- Ctl+G) will also have the same effect. Should work in Windows as well, though I have not played with it in Windows much.

I will outline this in the docs I've been slowly building up at teletype.net as it's a great question, but this wikipedia article also gets the gist I think: 
https://en.m.wikipedia.org/wiki/Bell_character

Sorry again for not responding. It's not you-- it's me. ;)

-
Jordan Spencer Cunningham
teletype.net


On Thu, Oct 10, 2019, at 2:12 PM, E. wrote:
> 
> Hey all,
> 
> On the v2 version of the Volpe board, how does one get to both figures and letters using a computer keyboard through the board ;o (for example, ringing the bell when in letters - the only way I can get it to do it right now is by having the 19 in figures by punching figures in first on the Teletype keyboard, then ringing the bell on the computer keyboard)??? I know that Jordan Spencer Cunningham has some custom firmware on his boards that might do this, but am not sure ;o … trying to figure it out ;p .
> 
> Thank much in advance ^^ !!!
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