examples/AT91/Master/io_macro.h
author greg
Mon, 20 Jul 2009 10:55:11 +0200
changeset 574 e5d7f4412a4c
parent 521 731bbe1b67b4
permissions -rw-r--r--
Add print_getenv function wich print extra init params
521
peter
parents:
diff changeset
     1
/*
peter
parents:
diff changeset
     2
This file is part of CanFestival, a library implementing CanOpen Stack.
peter
parents:
diff changeset
     3
peter
parents:
diff changeset
     4
Copyright (C): Edouard TISSERANT and Francis DUPIN
peter
parents:
diff changeset
     5
ARM Port: Peter CHRISTEN
peter
parents:
diff changeset
     6
peter
parents:
diff changeset
     7
See COPYING file for copyrights details.
peter
parents:
diff changeset
     8
peter
parents:
diff changeset
     9
This library is free software; you can redistribute it and/or
peter
parents:
diff changeset
    10
modify it under the terms of the GNU Lesser General Public
peter
parents:
diff changeset
    11
License as published by the Free Software Foundation; either
peter
parents:
diff changeset
    12
version 2.1 of the License, or (at your option) any later version.
peter
parents:
diff changeset
    13
peter
parents:
diff changeset
    14
This library is distributed in the hope that it will be useful,
peter
parents:
diff changeset
    15
but WITHOUT ANY WARRANTY; without even the implied warranty of
peter
parents:
diff changeset
    16
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
peter
parents:
diff changeset
    17
Lesser General Public License for more details.
peter
parents:
diff changeset
    18
peter
parents:
diff changeset
    19
You should have received a copy of the GNU Lesser General Public
peter
parents:
diff changeset
    20
License along with this library; if not, write to the Free Software
peter
parents:
diff changeset
    21
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
peter
parents:
diff changeset
    22
*/
peter
parents:
diff changeset
    23
peter
parents:
diff changeset
    24
#ifndef _IO_MACRO
peter
parents:
diff changeset
    25
#define _IO_MACRO
peter
parents:
diff changeset
    26
peter
parents:
diff changeset
    27
// Macros for set and clear bits in I/O registers
peter
parents:
diff changeset
    28
#define setbit(address,bit) (address |= (1<<bit))
peter
parents:
diff changeset
    29
#define clearbit(address,bit) (address &= ~(1<<bit))
peter
parents:
diff changeset
    30
#define togglebit(address,bit) (address ^= (1<<bit))
peter
parents:
diff changeset
    31
peter
parents:
diff changeset
    32
// Macro for testing of a single bit in an I/O location
peter
parents:
diff changeset
    33
#define checkbit(address,bit) (address & (1<<bit))
peter
parents:
diff changeset
    34
peter
parents:
diff changeset
    35
#endif