Sorry ,As am new to this i don't to how to explain. I have unplugged and i
tried multiple times . I have 10 boards I tried first board first time it
was working .but next time the first board  throws the ERROR ( ERROR:
Timeout waiting for ACK/NACK after 'Synch (0x55 0x55)' ) if i try with the
second board it's working fine but the second time it's giving the same
error message .  I thing so in TASK-01 am running SHELL will it be the
problem ? maybe because of this it's not giving the ACK/NACK . if it will
be the problem how can i retrive this.

On Wed, Feb 13, 2019 at 5:51 PM Robert Hartung <[email protected]>
wrote:

> Hi,
> it is not our task to resolve your "issue". Please give more
> information, when this happens. Did you try to replug the board and the
> error still appears? Can you still flash task-01 but only other tasks fail?
>
> Regards
> Maybe the BAUD rate changed, or the serial port changed?
>
> - Robert
>
> On 13.02.19 13:02, MANI KANDAN wrote:
> > Hi ,
> >  I have started working with RIOT with  my openMote-B
> > first of all i Tried the Tutorials from the RIOT-OS -- TASK-01 i did,
> > TASK-01 is runing a SHELL and priting the board name
> > after this if i try to  tranfer any other program then am getting the
> > following error
> >
> >
> >   ERROR: Timeout waiting for ACK/NACK after 'Synch (0x55 0x55)'
> >
> >
> > please solve this issue.
> >
> > Thanks,
> >
> >
> > _______________________________________________
> > users mailing list
> > [email protected]
> > https://lists.riot-os.org/mailman/listinfo/users
> >
>
> --
> Robert Hartung, M.Sc.
>
> Technische Universität Braunschweig
> Institut für Betriebssysteme und Rechnerverbund
> Mühlenpfordtstr. 23, Raum 115
> 38106 Braunschweig
>
> Fon: +49 (531) 391 - 3264
> Fax: +49 (531) 391 - 5936
> E-Mail: [email protected]
> _______________________________________________
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>
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