[ECOS] I have a problem when porting ecos to lpc2468

Martin Laabs martin.laabs@mailbox.tu-dresden.de
Sun May 31 12:47:00 GMT 2009


jasonlee wrote:
> Tanks,is anybody have this prolem,I have port the redboot to lpc2468 and is
> working well.SO,I want to run hello sample on my DEMO machine.
> follow is the info

> # arm-eabi-gdb a.out

> (gdb) set remotebaud 38400
> (gdb) target remote /dev/ttyS0
> Remote debugging using /dev/ttyS0
> diag_dump_buf_with_offset (p=<value optimized out>, s=0, base=0x13
> "?b_@?\030?\237?\030?\237?@")
> at /home/jason/ecosdir/ecos-3.0/packages/infra/v3_0/src/diag.cxx:634
> 634 }
> Current language: auto; currently c++
> (gdb) load
> Loading section .rom_vectors, size 0x40 lma 0x0
> Loading section .text, size 0x1392c lma 0x40
> Ignoring packet error, continuing...

Well - this happens when the protocol of the gdb is wrong. Often because
the processor received an exception. You have to figure out the cause of 
that. (And in this state it is very useful to have a JTAG debugger.)

> i ever use the another way to run "hello"program, use the redboot,
> #load -b 0xa1000000 -r -m xmodem
> #i sent the a.bin file to targe............
> #go 0xa1000000
> __________is stop here,

Same thing. Something is going wrong. Time for the hardware debugger. If 
you do not have one you could try to compile the HAL with assertions. 
(However - you'll get output only if the serial interface was set up 
correctly before. When the error occurs before that initialization you 
can try to use the LED macros.) If I remember correctly they report 
exceptions of the processor. So you could get a hint where to search.
Sometime it is simply a stack overflow. So try to increase the stack of 
you application first.

  Martin L.

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