Still requires an output. Whether it's DTR, Power, a Relay or the #RESET signal.
Page 272 and 273 talks about the DETACH bit. https://ww1.microchip.com/downloads/en/DeviceDoc/Atmel-7766-8-bit-AVR-ATmega16U4-32U4_Datasheet.pdf It's worth a try in that blink application working with that bit to see if Path Pilot no longer sees the serial port once the detach is set. And then re-enumerated if cleared 120 seconds later. John Dammeyer > -----Original Message----- > From: Martin Dobbins [mailto:tu...@hotmail.com] > Sent: December-04-20 10:02 AM > To: Enhanced Machine Controller (EMC) > Subject: Re: [Emc-users] USB - Serial question > > Hi Ken, > > PJRC's version of Arduino is somewhat different, I wonder if DTR is what you > need? If you can read the serial.dtr as shown here, then > I'm pretty sure you can hold DTR low until you are ready to send/receive data: > > https://www.pjrc.com/teensy/td_serial.html > > Martin > > ________________________________ > > > Your suggestion sounded great so I did a few tests. I loaded a PCJR Teensy > LC (ARM Cortex-M0+) and a genuine Arduinio Leonardo (ATmega32u4) with the > standard BLINK program -- > <much snippage> > > > Emc-users mailing list > > Emc-users@lists.sourceforge.net > > https://lists.sourceforge.net/lists/listinfo/emc-users > > > > > > > > _______________________________________________ > > Emc-users mailing list > > Emc-users@lists.sourceforge.net > > https://lists.sourceforge.net/lists/listinfo/emc-users > > > > > -- > > -users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users > > > > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users > > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
