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memcpy BF547

Question asked by AlonIs on Apr 24, 2013
Latest reply on Apr 25, 2013 by CraigG

I call the function memcpy several times in a row.

after few calls the processor crashes. the length off the buffers I copy is fixed.

I can see,in the disassembly window , that only before the first call , the compiler assign the value off the buffer length(bytes to be copied) in one of the data registers,for example R5 , then come the command line "R2 = R5 rot by 0"  , this line appears every time before calling memcpy.

the problem that after few calls R5 changes its value and without being touched in memcpy  . then the program crashes.

I must say that I'm working on a custom board with multiple processors which run over the same code synchronize .

this problem doesn't happens in all the processors .

what can be the problem ?