Minimal requirements to run L4linux using only a serial console

Martin Schröder mschroeder at web.de
Fri Aug 29 23:23:36 CEST 2014


Hi Ramya,

Tx path of UART is working but the Rx part not due to missing 
interrupts. In the Tx part interrupts are not really required - alt 
least not for Hello World. I also don't care about the missing "H" right 
now. So the first step would be polling the fiasco UART every 100ms or 
so instead of waitung for interrupts.


Best regards,
    Martin


I don't care abount the missing "H", this could be anything.

Am 29.08.2014 17:45, Masti Ramya Jayaram schrieb:
> Hey Martin,
>
> No I just realized that ESC does not break into the debugger. But I can clearly see that the process instead of printing "Hello world" prints "ello World" :)
>
> What could the reason be?
>
> Thanks,
> Ramya
> ________________________________________
> From: l4-hackers [l4-hackers-bounces at os.inf.tu-dresden.de] on behalf of Martin Schröder [martin.schroeder at openlimit.com]
> Sent: 29 August 2014 17:35
> To: l4-hackers at os.inf.tu-dresden.de
> Subject: Re: Minimal requirements to run L4linux using only a serial console
>
> Hi Ramya,
>
> a: No, its not a must. The UART could also be polled (by a timer) to see if something arrived.
> b: At least regarding l4linux there is nothing more to it - afaik.
>
> But let's go back to the hello word example on the SCC. What happens if you press the <ESC> key? Does it break into the JDB debugger?
>
> Best regards,
>      Martin




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