[avr-libc-dev] [bug #30569] ATmega16U4/32U4 wrong bit definition

[Frédéric Nadeau]

URL:
  <http://savannah.nongnu.org/bugs/?30569>

                 Summary: ATmega16U4/32U4 wrong bit definition
                 Project: AVR C Runtime Library
            Submitted by: fnadeau
            Submitted on: Tue 27 Jul 2010 11:15:08 PM 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: 1.7.0
           Fixed Release: None

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Details:

>From AVR Studio 4.18 SP2, both devices' XML are as follow:
<ADTS3_MASK>0x10</ADTS3MASK>

whereas the datasheet read as follow:

ADCSRB
Bit   7     6    5  4   3    2     1     0
    ADHSM ACME MUX5 - ADTS3 ADTS2 ADTS1 ADTS0

The header of in avr-libc head(2179) for
iom16u4.h
iom32u4.h

are as follow:
iom16u4.h:#define ADTS3 4
iom32u4.h:#define ADTS3 4

whereas they should be 3

A request has also been made to support.atmel.no




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