[avr-libc-dev] [bug #24231] AVR Mistakes Value in Register

[Chris Troutner]

URL:
  <http://savannah.nongnu.org/bugs/?24231>

                 Summary: AVR Mistakes Value in Register
                 Project: AVR C Runtime Library
            Submitted by: troutner
            Submitted on: Tue 09 Sep 2008 06:58:10 PM GMT
                Category: None
                Severity: 3 - Normal
                Priority: 5 - Normal
              Item Group: None
                  Status: None
        Percent Complete: 0%
             Assigned to: None
             Open/Closed: Open
         Discussion Lock: Any
                 Release: Unknown
           Fixed Release: None

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Details:

In the attached files, you'll see the line inside the main() while() loop
with the instruction:

//Clear service variable
service = 0;

service is defined as a volatile uint8_t. When I run the JTAG mkII emulator,
the assembly code for this line is:

STS     0x0100,R1

0x0100 is the address where the value of service is stored. However, R1 is
always 0x01, not 0x00. 

Chris Troutner
address@hidden



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File Attachments:


-------------------------------------------------------
Date: Tue 09 Sep 2008 06:58:11 PM GMT  Name: makefile  Size: 16kB   By:
troutner

<http://savannah.nongnu.org/bugs/download.php?file_id=16457>
-------------------------------------------------------
Date: Tue 09 Sep 2008 06:58:11 PM GMT  Name: periph_init.c  Size: 9kB   By:
troutner

<http://savannah.nongnu.org/bugs/download.php?file_id=16458>
-------------------------------------------------------
Date: Tue 09 Sep 2008 06:58:10 PM GMT  Name: PIR2.c  Size: 3kB   By: troutner

<http://savannah.nongnu.org/bugs/download.php?file_id=16456>

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