[ECOS] FLAG Question???

Jonathan Larmour jlarmour@redhat.com
Fri Jun 15 13:36:00 GMT 2001


Carlos Camargo wrote:
> 
> Thanks Jonathan for your answer..
> 
> But can i define a flag in FPGA register??

Not using any standard API.

> If the above question is yes: But if i change the flag
> value by hardware way, and use the flag function
> without change this value. The kernel read the flg
> value?? Or assume that no change??

If the flag isn't already set when you enter cyg_flag_wait, the kernel will
will never notice a state change. In which case you may as well have just
tested it yourself anyway and not involved the kernel flags at all.

Jifl
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