In SDCC, use ! instead of ~ to flip a bit.
-----Original Message-----
From: Martin Leopold <[email protected]>
To: [email protected]
Sent: Fri, 16 Jan 2009 9:21 am
Subject: [Sdcc-user] New TinyOS 8051 platform results in non zero exit code
All.
I've recently added ported my 8051-TinyOS to a new platform, and I
thought I might give SDCC a spin, but unfortunately I'm having some
problems (the platform is a SiLabs c8051F340, but I hardly think that is
the problem). I've used the sdcc-nf 2.8.0 distributed with Ubuntu.
The attached app.c results in a bunch of warnings, but no errors, but
sdcc returns a non zero exit code (at least my makescript says so), so I
suppose something went wrong!?
The warnings give rise to a different question regarding "~". I'm using
~ to turn certain bits of in a register, eg. "myreg |= MYBITMASK;myreg
&= ~MYBITMASK". Is there an other convenient way to do the same that
avoids the integer-promotion that the compiler warns about?
Anyway, the command and errors are:
sdcc -mmcs51 --model-large --no-c-code-in-asm --std-sdcc99 app.c -oapp
build/c8051F340TB/app.c:1221: warning 84: 'auto' variable 'i' may be
used before initialization
build/c8051F340TB/app.c:1610: warning 180: using ~ on bit/bool/unsigned
char variables can give unexpected results due to promotion to int
build/c8051F340TB/app.c:1687: warning 180: using ~ on bit/bool/unsigned
char variables can give unexpected results due to promotion to int
build/c8051F340TB/app.c:1769: warning 85: in function
SchedulerBasicP__TaskBasic__default__runTask unreferenced function
argument : 'id'
build/c8051F340TB/app.c:2002: warning 126: unreachable code
build/c8051F340TB/app.c:2002: warning 126: unreachable code
build/c8051F340TB/app.c:2002: warning 126: unreachable code
--
Regards Martin Leopold.
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