yes the issue was with uart cable. I don't have any debugger to see what is the problem but replacing it worked.
On Tuesday, July 19, 2016 at 4:56:48 PM UTC+5:30, [email protected] wrote: > > The circuitry for the USB to UART cable is in the USB plug of the cable, > so it should enumerate as /dev/ttyUSBx without plugging it into the board. > If it doesn't appear then there is most likely an issue with the cable or > the PC. If you run > dmesg | tail > on a terminal in Ubuntu a few seconds after plugging in the cable, you > should be able to see if any errors are detected. You could also see if it > is detected in Windows. > > Hope this helps. > > On Saturday, July 16, 2016 at 6:15:13 AM UTC+1, [email protected] > wrote: >> >> >> My setup : >> >> Ubuntu 14.04 LTS dual boot with windows 7. >> >> >> I connected usb power cable which is a 5 volt supply. I also connected a >> usb to uart serial cable, and was able to see this to be as ttyUSB0 in >> ubuntu few days back. >> >> After I did not see this ttyUSB0 only ttyACM0 (which I think is from usb >> power cable). >> >> >> I have one doubt what is overcurrent? >> >> >> I checked what power usb to uart cable is getting and it was 5 volts. I >> checked the voltage on serial header of beaglebone and it was 3.3 volts. >> How ever I am not connecting red cable on beaglebone black. >> >> >> I am unable to understand what exactly is the problem? >> >> >> Please respond anything related to it. >> > -- 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/372f65d5-aaae-4d61-a504-0bc74eeeccfb%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
