[avr-libc-dev] [bug #31267] misleading header iom128rfa1.h

[Ilya]

URL:
  <http://savannah.nongnu.org/bugs/?31267>

                 Summary: misleading header iom128rfa1.h 
                 Project: AVR C Runtime Library
            Submitted by: ibagrak
            Submitted on: Thu 07 Oct 2010 06:48:52 AM GMT
                Category: Header
                Severity: 3 - Normal
                Priority: 5 - Normal
              Item Group: libc code
                  Status: None
        Percent Complete: 0%
             Assigned to: None
             Open/Closed: Open
         Discussion Lock: Any
                 Release: Unknown
           Fixed Release: None

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Details:

I am referring to the file "iom128rfa1.h"

starting at line 5227

    /* USART2, Rx Complete */
    #define USART2_RX_vect                  _VECTOR(51)
    #define USART2_RX_vect_num              51


and at line 5240

    /* USART3, Rx Complete */
    #define USART3_RX_vect                  _VECTOR(54)
    #define USART3_RX_vect_num              54

According to the documentation "doc8266.pdf" page 212 and 213

    "3. Not usefull in ATmega128RFA1 due to limited pin count."

Therefore this chip does NOT have uart2 and uart3

When writing code to work on multiple CPUs, many people use #if defined() to
determine if a feature is available or not.

I had in my code

    #if defined(USART3_RX_vect)
        ...
    #endif

to determine if USART3 is present. Therefore my code tried to use USART3 but
it was not present.

Therefore the .h file contradicts the documentation. In this case the
documentation is correct and the .h file is misleading





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