[avr-libc-dev] [bug #22667] AT90PWM3B, AT90PWM316 stack pointer initialization error

[Tero Sinervo]

URL:
  <http://savannah.nongnu.org/bugs/?22667>

                 Summary: AT90PWM3B, AT90PWM316 stack pointer initialization
error
                 Project: AVR C Runtime Library
            Submitted by: tvjsin
            Submitted on: Wednesday 19/03/08 at 15:17
                Category: Library
                Severity: 3 - Normal
                Priority: 5 - Normal
              Item Group: Startup code
                  Status: None
        Percent Complete: 0%
             Assigned to: None
        Originator Email: 
             Open/Closed: Open
         Discussion Lock: Any

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Details:

The startup code generated for AT90PWM3B, AT90PWM316 and possibly others does
not initialize the SPH register.

SPL is initialized to 0xFF, placing the beginning of stack to the end of
extended IO space. SPH should be initialized to 0x02 (RAMEND is 0x2FF) but no
code seems to be doing that.





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