URL:
<http://savannah.nongnu.org/bugs/?26755>
Summary: boot.h and ATMega48 and missing SIGRD
Project: AVR C Runtime Library
Submitted by: racemouse
Submitted on: Mon 08 Jun 2009 05:17:32 GMT
Category: Header
Severity: 3 - Normal
Priority: 5 - Normal
Item Group: Header files
Status: None
Percent Complete: 0%
Assigned to: None
Open/Closed: Open
Discussion Lock: Any
Release: 1.6.6
Fixed Release: None
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Details:
We tried to compile the boot_signature_byte_get() macro from avr/boot.h using
a mega48. The compiler complained "error: 'SIGRD' undeclared (first use in
this function)".
Datasheet says about the bit 5 in SPMCSR:
• Bit 5 – Res: Reserved Bit
This bit is a reserved bit in the ATmega48P/88P/168P/328P and always read as
zero.
It can be worked around by manually defining SIGRD as 5 and therefore not a
complete showstopper...
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