[bug #49150] Incorrect bit definitions in io90pwm3b.h

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[bug #49150] Incorrect bit definitions in io90pwm3b.h

Matthijs Kooijman-2
URL:
  <http://savannah.nongnu.org/bugs/?49150>

                 Summary: Incorrect bit definitions in io90pwm3b.h
                 Project: AVR C Runtime Library
            Submitted by: jmkasunich
            Submitted on: Wed 21 Sep 2016 04:04:56 PM GMT
                Category: Header
                Severity: 3 - Normal
                Priority: 5 - Normal
              Item Group: Header files
                  Status: None
        Percent Complete: 0%
             Assigned to: None
        Originator Email:
             Open/Closed: Open
         Discussion Lock: Any
                 Release: Any
           Fixed Release: None

    _______________________________________________________

Details:

Two incorrect bit definitions in the General Timer/Counter Control Register
GTCCR:

According to the Atmel datasheet (document 4317, section 13.4), ICPSEL1 is bit
6, and TSM is bit 7.

According to io90pwm3b.h, lines 261 & 262, those bits are 2 and 3
respectively.

I have confirmed that ICPSEL1 needs to be 6 by testing on actual hardware.

The incorrect definitions are present in version 2.0 and have been present
since the file was added.  Odd that it hasn't been noticed before, although it
does require special circumstances:  user must be doing captures with timer 1,
and must be using capture input B, pin PB6.  (The default is to use input A,
pin PD4.)




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[bug #49150] Incorrect bit definitions in io90pwm3b.h

Matthijs Kooijman-2
Update of bug #49150 (project avr-libc):

                Severity:              3 - Normal => 4 - Important          
                  Status:                    None => Confirmed              
                 Release:                     Any => 2.0.0                  

    _______________________________________________________

Follow-up Comment #1:

Yes, it appears that these are incorrect. Thank you for your report.

    _______________________________________________________

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