dear sir,
can you help to solve following problem??
I am using GCC to port RS485 device driver, but i encounted a serious problem.
In my program code, i should get a micro second level delay and called the
function usleep(1000) for delay 1 ms, but can't get the
result. i got the waveform using scope, but can only get a delay for at least 20
ms, no matter how chang the value.
i tried to modify the HZ value in <asm/param.h>, but also the same ...
Dear sir, another question irritate me from compille warning: implicit
declaration of function 'usleep'
it just happened after i modified the <asm/param.h> and compiled the source
code. And make me puzzled is that i
can't restore its previous status (no any warning).
what can this happen? i have alread added the header files. BEFORE , no this
warning exist!!
dear sir, please give me hint, it is urgent for my project.
Thank u very much.
Jin Xinhua
R&D
GES Singapore Ptd Ltd
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