Hi John, Thanks for response. So do you think that my ttl to USB is not working? if so then if we remove the ttl to USB no serial o/p on another com port created after connecting BBB USB power cable. So in your case you are getting serial logs from com port created after connecting TTL-USB ? Please explain in details your setup. please also let me know the link of the vendors for ttl-USB. Thanks Niraj
On Monday, August 18, 2014 12:12:37 AM UTC+5:30, john3909 wrote: > > From: Niraj Kumar <[email protected] <javascript:>> > Reply-To: "[email protected] <javascript:>" < > [email protected] <javascript:>> > Date: Sunday, August 17, 2014 at 12:37 AM > To: "[email protected] <javascript:>" <[email protected] > <javascript:>> > Subject: [beagleboard] u boot serial issue > > Hi Beagle bone black experts, > I have recently started to setup beagle bone black. Initially it was with > great difficulty I was able to get ttl to usb cable. > Now I have setup where I can get serial logs in serial console application > like teraterm. > I would explain my setup and then the real issue. > > Setup: > > BBB(TTL)-------->window7 pc(USB) (This will appear as com port comx) > > BBB(mini UBS)-------> window7 USB(This will apear as com port comy) > > Real issue: > ---------------- > I connect TTL to window7 USB port and open serial console with comx. > Then I connect power supply using mini usb to window7 USB. I am not > getting any serial logs from uboot which I wanted to stop at uboot prpmpt. > When I open comy port created by connecting mini USB to window7 USB serial > logs from kernel I get. > Can some one tell how and what to enable to get logs from Uboot? > > Serial log is on by default. Make sure you serial port parameters are > setup as 115200,n,8. Don’t enable xon/xoff and disable DTS/RTS handshaking. > This won’t stop the BBB from sending data, but it will prevent you from > sending data back to the BBB. BTW, some of the tty-USB adapters don’t > always work. I have a cheap one that didn’t work. The one recommended by > BeagleBoard is the one I use and it works fine. > > Regards, > John > > > Thanks > N kumar > > > -- > 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] <javascript:>. > 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.
