From: Cristian Mitu <[email protected]> Reply-To: "[email protected]" <[email protected]> Date: Thursday, July 3, 2014 at 12:22 PM To: "[email protected]" <[email protected]> Subject: Re: [beagleboard] UART RS485 transciever setup
> Thank you again Jhon you are a life saver this part looks perfect for what i > need. I think i will use two, one for the RX and TX signals seeing as it > doesn't need direction input and one for the DE and RE enable signals. Thank > you again Then use the TXS0104 Regards, John > > > PS > Also thank you Jerônimo for your suggestion. > > > 2014-07-03 20:53 GMT+02:00 John Syn <[email protected]>: >> >> From: Jerônimo Lopes <[email protected]> >> Reply-To: "[email protected]" <[email protected]> >> Date: Thursday, July 3, 2014 at 5:31 AM >> To: "[email protected]" <[email protected]> >> Subject: Re: [beagleboard] UART RS485 transciever setup >> >>> Cristian, >>> >>> >>> 2014-07-03 8:55 GMT-03:00 Cristian Mitu <[email protected]>: >>>> Thank you for your response John. >>>> So i only need to to translate when sending data to the BBB or for both >>>> TX and RX ? >>>> >>> >>> I'm using BBB with a 75176 transceiver (5V powered). Put a diode between BBB >>> Rx and 75176: >>> >>> 75176------|<|------BBB Rx >>> >>> And a pullup resistor, from BBB Rx to 3.3V. >>> >>> It's working fine. >> Only for slow data speeds. >>> >>>> >>>> >>>> >>>> >>>> 2014-07-03 5:18 GMT+02:00 John Syn <[email protected]>: >>>>> >>>>> From: Cristian Mitu <[email protected]> >>>>> Reply-To: "[email protected]" <[email protected]> >>>>> Date: Wednesday, July 2, 2014 at 1:49 PM >>>>> To: "[email protected]" <[email protected]> >>>>> Subject: [beagleboard] UART RS485 transciever setup >>>>> >>>>>> Hello guys, >>>>>> >>>>>> >>>>>> I am designing a board ( an adapter board for the BeagleBine black) that >>>>>> is un upgrade for a current system. Beacuse of this i specifically have >>>>>> to link a 5V TTL RS485 transceiver to one of the UARTs available. I am >>>>>> not sure what logic family the BeagleBone uses(though i'm guessing that >>>>>> it is CMOS) and because of this i want to know if this old transceiver >>>>>> can be wired directly to the BeagleBone or is it unavoidable that i have >>>>>> to use logic level translators for the signals. I apologize for the >>>>>> newbie question and i thank you in advance for your response. >>>>> You will need to translate the 5V TTL signals to 3.3V before connecting to >>>>> the BBB. >>>>> >>>>> Regards, >>>>> John >>>>>> >>>>>> >>>>>> PS >>>>>> >>>>>> If you could direct me to some good drivers for RS485 communication i >>>>>> would be overwhelmed with joy and eternally grateful :) >>>>>> >>>>>> -- >>>>>> For more options, visit http://beagleboard.org/discuss >>>>>> --- >>>>>> You received this message because you are subscribed to the Google Groups >>>>>> "BeagleBoard" group. >>>>>> To unsubscribe from this group and stop receiving emails from it, send an >>>>>> email to [email protected]. >>>>>> >>>>>> For more options, visit https://groups.google.com/d/optout. >>>>> -- >>>>> For more options, visit http://beagleboard.org/discuss >>>>> --- >>>>> You received this message because you are subscribed to a topic in the >>>>> Google Groups "BeagleBoard" group. >>>>> To unsubscribe from this topic, visit >>>>> https://groups.google.com/d/topic/beagleboard/tsrW0hBClBc/unsubscribe. >>>>> To unsubscribe from this group and all its topics, send an email to >>>>> [email protected]. >>>>> >>>>> For more options, visit https://groups.google.com/d/optout. >>>> >>>> -- >>>> For more options, visit http://beagleboard.org/discuss >>>> --- >>>> You received this message because you are subscribed to the Google Groups >>>> "BeagleBoard" group. >>>> To unsubscribe from this group and stop receiving emails from it, send an >>>> email to [email protected]. >>>> For more options, visit https://groups.google.com/d/optout. >>> >>> >>> -- >>> For more options, visit http://beagleboard.org/discuss >>> --- >>> You received this message because you are subscribed to the Google Groups >>> "BeagleBoard" group. >>> To unsubscribe from this group and stop receiving emails from it, send an >>> email to [email protected]. >>> For more options, visit https://groups.google.com/d/optout. >> -- >> For more options, visit http://beagleboard.org/discuss >> --- >> You received this message because you are subscribed to a topic in the Google >> Groups "BeagleBoard" group. >> To unsubscribe from this topic, visit >> https://groups.google.com/d/topic/beagleboard/tsrW0hBClBc/unsubscribe. >> To unsubscribe from this group and all its topics, send an email to >> [email protected]. >> For more options, visit https://groups.google.com/d/optout. > > > -- > For more options, visit http://beagleboard.org/discuss > --- > You received this message because you are subscribed to the Google Groups > "BeagleBoard" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > For more options, visit https://groups.google.com/d/optout. -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
