We do serial differently.

[Zaphod Beeblebrox]

OK.  I played with this all again ... a bit.

Firstly, when I run "arduino" (the IDE) ... the arduino board resets
immediately (I can tell this because it has an LCD screen attached).

But when I run pronterface, it doesn't reset until 5 seconds (roughly)
after pronterface exits.

I tried adding a hardcoded setDTR(0) or setDTR(1) near this code ... but it
doesn't seem to make any palpable difference.

On Wed, Oct 25, 2017 at 1:11 PM, Kyle Evans <kevans91 at ksu.edu> wrote:

> On Wed, Oct 25, 2017 at 11:43 AM, Kyle Evans <kevans91 at ksu.edu> wrote:
>
>> On Wed, Oct 25, 2017 at 11:34 AM, Zaphod Beeblebrox <zbeeble at gmail.com>
>> wrote:
>>
>>> On Mon, Oct 23, 2017 at 9:45 AM, Kyle Evans <kevans91 at ksu.edu> wrote:
>>>
>>>> Hi,
>>>>
>>>> Are you able to connect to it otherwise (w/ cu or friends) and issue,
>>>> say, an M105 manually?
>>>>
>>>
>>> yes.  With CU I can connect, it resets, then I can issue an "M105<cr>"
>>> and it parrots back some status.
>>>
>>
>> Ok, cool, that's expected and sounds like Pronterface is doing something
>> it shouldn't be.
>>
>> I'll poke at it a little bit more- last I checked, it didn't look like it
>> was doing anything too crazy with pyserial and I've got a working OctoPrint
>> (w/ pyserial) setup, so I know that works to some extent.
>>
>>
> For the sake of argument, can you try applying the following patch [1] to
> printrun? I don't see a need to be toggling DTR here, and that might narrow
> things down a little bit.
>
> [1]
> diff --git a/printrun/printcore.py b/printrun/printcore.py
> index b54e750..fd531c3 100644
> --- a/printrun/printcore.py
> +++ b/printrun/printcore.py
> @@ -218,11 +218,6 @@ class printcore():
>                                            parity = PARITY_ODD)
>                      self.printer.close()
>                      self.printer.parity = PARITY_NONE
> -                    try:  #this appears not to work on many platforms, so
> we're going to call it but not care if it fails
> -                        self.printer.setDTR(dtr);
> -                    except:
> -                        #self.logError(_("Could not set DTR on this
> platform")) #not sure whether to output an error message
> -                        pass
>                      self.printer.open()
>                  except SerialException as e:
>                      self.logError(_("Could not connect to %s at baudrate
> %s:") % (self.port, self.baud) +
>
>
>