Sorry for saying the USB end on my previous post. On Sun, May 22, 2016 at 7:32 PM, Shaurabh Kumar Singh <[email protected]> wrote:
> The RS232 that I am talking about is a BeagleBone Black RS-232 Serial > Micro-cape. It is indeed designed specifically for BBB. > > On Sun, May 22, 2016 at 7:26 PM, evilwulfie <[email protected]> wrote: > >> we had already told you you MUST use a 3.3v translator of your choosing. >> >> >> >> On 5/22/2016 4:22 PM, Shaurabh Kumar Singh wrote: >> >> @Bruce >> I should have mentioned it earlier. Anyway, it is a null modem cable (DB >> 25 male to DB 9 female). I have tried every permutation and combination >> between the TxDs' and RxDs' . I am not using any adapter at the BBB. I am >> simply making wired connections. From the RS 232 USB end I have four wires >> (red,green,white,black) of which i am connecting green white and black as >> suggested and shown in examples available online. >> I had previously asked if i should instead use an FTDI USB to serial >> adapter designed for BBBs. >> Also, a possibility is, as discussed earlier, the BBB might be lacking >> necessary drivers. >> >> >> On Sun, May 22, 2016 at 1:47 PM, Bruce Boyes <[email protected]> wrote: >> >>> If you used a straight through serial cable from your PC to the CNC then >>> the CNC is likely DCE, since the PC serial is usually DTE. If you used a >>> null modem cable then the CNC could be DTE. You didn't specify which cable >>> you used. >>> >>> DCE is Data Communication Equipment and originally was a device like a >>> modem, not a Terminal or PC. DTE, the Data Terminal Equipment was "in >>> charge" and could control peripherals like serial modems or printers. >>> >>> A modem or DCE device generally just waits there to be told what to do. >>> DTE connects to DCE with a "standard" cable which is just straight through >>> since the hardware DCE and DTE ports themselves are wired such that the TXD >>> from DTE connects to the RXD of DCE and vice versa. To connect DTE to DTE >>> or DCE to DCE you need a "null modem" cable which swaps those pins in the >>> cable, otherwise you have both TXD connected to each other = won't work. >>> >>> What UART adapter are you using on BBB? Did I miss that information? >>> Apologies if I just added to the confusion. >>> >>> Bruce >>> >>> >>> -- >>> 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/Z1s_NwXYNrw/unsubscribe> >>> https://groups.google.com/d/topic/beagleboard/Z1s_NwXYNrw/unsubscribe. >>> To unsubscribe from this group and all its topics, send an email to >>> [email protected]. >>> To view this discussion on the web visit >>> <https://groups.google.com/d/msgid/beagleboard/41fdcae3-e966-415c-bb07-156662743ee5%40googlegroups.com?utm_medium=email&utm_source=footer> >>> https://groups.google.com/d/msgid/beagleboard/41fdcae3-e966-415c-bb07-156662743ee5%40googlegroups.com. >>> >>> >>> 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]. >> To view this discussion on the web visit >> <https://groups.google.com/d/msgid/beagleboard/CAEh-rEGhkEakpTL4Vi3aZHg5SgTJX6ou0re75_q5%3DhQrWbSFOA%40mail.gmail.com?utm_medium=email&utm_source=footer> >> https://groups.google.com/d/msgid/beagleboard/CAEh-rEGhkEakpTL4Vi3aZHg5SgTJX6ou0re75_q5%3DhQrWbSFOA%40mail.gmail.com >> . >> 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/Z1s_NwXYNrw/unsubscribe. >> To unsubscribe from this group and all its topics, send an email to >> [email protected]. >> To view this discussion on the web visit >> https://groups.google.com/d/msgid/beagleboard/0a14b26f-3f0d-6be6-01ee-2e60b08d237d%40gmail.com >> <https://groups.google.com/d/msgid/beagleboard/0a14b26f-3f0d-6be6-01ee-2e60b08d237d%40gmail.com?utm_medium=email&utm_source=footer> >> . >> >> 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]. To view this discussion on the web visit https://groups.google.com/d/msgid/beagleboard/CAEh-rEGyuhHVyU_tQQp4kP7xe47EMLcQYQdOP3u48E_wAVdy1Q%40mail.gmail.com. For more options, visit https://groups.google.com/d/optout.
