Eric,
I can't help you, but I suspect that the gcc you're using to compile the MCU application is not version 4.1.2. To get ncc spit out the correct gcc version you need to type "ncc --version -target=telosb" (replacing telosb with whatever mote you're using). Also, in the future, please post such questions to tinyos-help instead of tinyos-devel. Janos From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Eric Decker Sent: Tuesday, May 20, 2008 2:38 AM To: [EMAIL PROTECTED] Subject: [Tinyos-devel] what version of Gcc should I be using? Possible bug? I've been chasing a problem where the following code doesn't do the right thing. bool isSetSCCI() { return (TACCTL2 & SCCI); } SCCI has the value 0x0400 (bit 10 of TACCTLx). I would expect this to return 0x0400 if SCCI is set and 0 otherwise. The code generated both with and without optimization is given below. It basically does nothing. Am I missing something? (As I get older my brain definitely misses things....) (gdb) x/3i 460c 0x460c <GPSByteCollectP$isSetSCCI>: mov &0x0166,r15 ;src addr 0x0166 0x4610 <GPSByteCollectP$isSetSCCI+4>: clr r15 ; 0x4612 <GPSByteCollectP$isSetSCCI+6>: ret Here is the code I'm running. I'm a bit dubious of gcc 4.1.2. What version should I be running? cire-laptop (47): ncc --version ncc: 1.2.4 nescc: 1.2.9 gcc: gcc (GCC) 4.1.2 (Ubuntu 4.1.2-0ubuntu4) Copyright (C) 2006 Free Software Foundation, Inc. This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. -- Eric B. Decker Senior (over 50 :-) Researcher Autonomous Systems Lab Jack Baskin School of Engineering UCSC
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