Efficient debug log

From	pozz <pozzugno@gmail.com>
Newsgroups	comp.arch.embedded
Subject	Efficient debug log
Date	2017-07-20 11:31 +0200
Organization	A noiseless patient Spider
Message-ID	<okpt2m$sok$1@dont-email.me> (permalink)

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I usually prints some messages on a free UART used as a debug port. 
They are very useful during debugging to understand the flow of execution.

Most of the time, I don't compile the debug log facility in release build.

I sometimes need to disable messages from some modules and enable 
messages from other modules under debugging.
Moreover I sometimes need to enable/disable less important messages.

Do you suggest some efficient implementation of debug log macros that 
include all the features above?

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Efficient debug log pozz <pozzugno@gmail.com> - 2017-07-20 11:31 +0200
  Re: Efficient debug log Anders.Montonen@kapsi.spam.stop.fi.invalid - 2017-07-20 10:35 +0000
  Re: Efficient debug log Stef <stef33d@yahooI-N-V-A-L-I-D.com.invalid> - 2017-07-20 23:14 +0200
    Re: Efficient debug log David Brown <david.brown@hesbynett.no> - 2017-07-24 09:40 +0200
      Re: Efficient debug log pozz <pozzugno@gmail.com> - 2017-07-26 11:15 +0200
        Re: Efficient debug log David Brown <david.brown@hesbynett.no> - 2017-07-26 14:24 +0200
        Re: Efficient debug log Stef <stef33d@yahooI-N-V-A-L-I-D.com.invalid> - 2017-07-27 10:23 +0200
          Re: Efficient debug log David Brown <david.brown@hesbynett.no> - 2017-07-27 11:14 +0200
      Re: Efficient debug log Stef <stef33d@yahooI-N-V-A-L-I-D.com.invalid> - 2017-07-27 10:06 +0200
        Re: Efficient debug log David Brown <david.brown@hesbynett.no> - 2017-07-27 11:35 +0200
  Re: Efficient debug log Clifford Heath <no.spam@please.net> - 2017-07-21 12:57 +1000
  Re: Efficient debug log Jack <jack4747@gmail.com> - 2017-07-20 23:17 -0700
  Re: Efficient debug log Chris <xxx.syseng.yyy@gfsys.co.uk> - 2017-07-29 12:47 +0000
    Re: Efficient debug log pozz <pozzugno@gmail.com> - 2017-07-31 10:45 +0200
      Re: Efficient debug log Chris <xxx.syseng.yyy@gfsys.co.uk> - 2017-07-31 16:44 +0000

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