We do serial differently.

[Zaphod Beeblebrox]

Since this didn't work, is the problem maybe (rather) that the application
is opening and closing the port too fast (continually resetting the
arduino) rather than this?

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) +
>
>
>