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RE: [avr-gcc-list] enum with 8 bit encoding

From: Dean Ferreyra
Subject: RE: [avr-gcc-list] enum with 8 bit encoding
Date: Mon, 15 Apr 2002 00:00:25 -0700


> Is it possible to force avr-gcc to use only 8 bit constants to code
> eenumeration types?

Two ways that I know of:

1. The command-line option -fshort-enums.
2. The packed attribute, as in:
        typedef enum
          set_state            = 's',
          send_eeprom          = 'm',
          change_eeprom        = 'l',
          send_det             = 'd',
          synchonization       = 'r',
          end_of_block         = 'e'
        } t_symbol __attribute__ ((packed));

As an aside that may help:  I download the GCC Manual
(http://www.gnu.org/software/gcc/onlinedocs/) in PostScript and convert it
to a PDF for easy viewing and, more importantly, searching.  It has most of
the answers!


avr-gcc-list at http://avr1.org

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