That would be really cool.
> On Jan 30, 2019, at 2:46 PM, c646581 <[email protected]> wrote:
>
> I've been thinking about an ESP8266-based TPDD emulator that can link up to
> an FTP site or act as a telnet to serial bridge at the flip of a switch.
>
> On Wed, Jan 30, 2019, 14:06 Brian White <[email protected]
> <mailto:[email protected]> wrote:
> I think in both of these cases I'm using interrupts and hardware
> sleep/wait-for-interrupt support, so there's no tight loop. (assuming correct
> code and correct wiring on my part, of which I make no such claim :) ). And
> yes there is serial port init code. I went through a few different variations
> on that "while !Serial" kind of thing, but looks like now I just have
> CLIENT.flush() ( Serial1.flush() )
> I think it's actually behaving now, in both devices. I believe I had
> something bone-headed backwards at the time of the video, watching TX instead
> of RX with the interrupt. Also there was something about how quickly the
> device can wake from sleep, or from different levels of sleep. If you don't
> go below a certain level of sleep, then the device can wake up fast enough
> not to lose the same byte of data that woke it up.
>
>
>
> On Wed, Jan 30, 2019 at 1:23 PM Scott Lawrence <[email protected]
> <mailto:[email protected]>> wrote:
> I've been doing a bunch with 32u4 based arduinos recently (pro
> micro/leonardo/ss micro/etc).
>
> With these, there's a bit in the start up to make sure that it doesn't crash
> when talking to an uninitialized serial port, something like:
>
> while( !Serial );
>
> Or, you could check it with something like:
> if( !Serial ) { return; }
>
> and so on. In any case, it's been my observation that when it's sitting in
> these tight loops checking the hardware, the thing is basically running
> all-out full speed. Even just the ( Serial.available() ) function in these
> situations can be super laggy. Even just putting a delay in there helps a
> ton. eg:
> while( !Serial ) { delay( 50 ); }
>
> or somesuch.
>
> It might not be the cause of the power drain, but there's a chance it is.
> maybe?
>
> In my experience, those calls checking the serial port seemed to block the
> system entirely and cause bad behaviors... :/
>
> -s
>
>
> On Wed, Jan 30, 2019 at 12:34 PM Brian White <[email protected]
> <mailto:[email protected]>> wrote:
> I got Jimmy's code working on Teensy 3.5 & 3.6, and on Adafruit Feather 32u4
> Adalogger
> And modified my copy somewhat. I was playing with getting the top-right
> corner of TS-DOS to display the current working directory, and reducing the
> power drain.
> Some changes are just gratuitous refactoring to suit myself, so that I could
> then make the functional changes.
>
> In this video there is a little mystery where the power drain is a little
> high on initial power-on, but behaves properly as soon as you actually talk
> to the device at least once. I think I figured that out and the current
> version behaves properly right from power-on.
>
> Teensy 3.5/6 and the Adafruit device are quite different and have different
> quirks. I never pulled both versions together into a single modular code base
> yet. I have some messy code to try to make the same code handle different
> devices by configurable options amd macros, but it's not really worked out
> and so it's still two separate branches, one for each device.
>
> I haven't done anything further since then.
>
> https://youtu.be/_lFqsHAlLyg <https://youtu.be/_lFqsHAlLyg>
>
> My mods are in the two different branches here. The master branch is Jimmy's
> original code.
> https://github.com/aljex/SD2TPDD <https://github.com/aljex/SD2TPDD>
>
> --
> bkw
>
> On Wed, Jan 30, 2019 at 3:52 AM VANDEN BOSSCHE JAN
> <[email protected] <mailto:[email protected]>> wrote:
> Someone was working on a TPDD emulator on Arduino. Is there any progress?
> And/Or photos?
>
> As I'm starting a course on Arduino programming, I am now even more
> interested. This could become the cheapest stand-alone TPDD emulator yet.
>
>
> Greetings from the TyRannoSaurus
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> --
> bkw
>
>
> --
> Scott Lawrence
> [email protected] <mailto:[email protected]>
>
> --
> bkw
