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[/] [openmsp430/] [trunk/] [core/] [sim/] [rtl_sim/] [src-c/] [sandbox/] [main.c] - Blame information for rev 141

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1 76 olivier.girard
/*===========================================================================*/
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/* Copyright (C) 2001 Authors                                                */
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/*                                                                           */
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/* This source file may be used and distributed without restriction provided */
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/* that this copyright statement is not removed from the file and that any   */
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/* derivative work contains the original copyright notice and the associated */
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/* disclaimer.                                                               */
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/*                                                                           */
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/* This source file is free software; you can redistribute it and/or modify  */
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/* it under the terms of the GNU Lesser General Public License as published  */
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/* by the Free Software Foundation; either version 2.1 of the License, or    */
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/* (at your option) any later version.                                       */
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/*                                                                           */
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/* This source is distributed in the hope that it will be useful, but WITHOUT*/
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/* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or     */
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/* FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public       */
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/* License for more details.                                                 */
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/*                                                                           */
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/* You should have received a copy of the GNU Lesser General Public License  */
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/* along with this source; if not, write to the Free Software Foundation,    */
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/* Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA        */
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/*                                                                           */
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/*===========================================================================*/
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/*                                 SANDBOX                                   */
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/*---------------------------------------------------------------------------*/
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/*                                                                           */
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/* Author(s):                                                                */
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/*             - Olivier Girard,    olgirard@gmail.com                       */
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/*                                                                           */
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/*---------------------------------------------------------------------------*/
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/* $Rev: 19 $                                                                */
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/* $LastChangedBy: olivier.girard $                                          */
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/* $LastChangedDate: 2009-08-04 23:47:15 +0200 (Tue, 04 Aug 2009) $          */
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/*===========================================================================*/
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36 141 olivier.girard
#include "omsp_system.h"
37 76 olivier.girard
 
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volatile char shift_direction = 0x01;  // Global variable
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int main(void) {
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    WDTCTL = WDTPW | WDTHOLD;          // Disable watchdog timer
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    P2DIR  = 0xff;                     // Port 2.0-2.7 = output
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    P2OUT  = shift_direction;          // Initialize Port 2
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    P1DIR  = 0x00;                     // Port 1.0-1.7 = input
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    P1IE   = 0x01;                     // Port 1.0 interrupt enabled
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    P1IES  = 0x00;                     // Port 1.0 interrupt edge selection (0=pos 1=neg)
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    P1IFG  = 0x00;                     // Clear all Port 1 interrupt flags (just in case)
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    eint();                            // Enable interrupts
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    while (1) {
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      if (P2OUT == 0x00) {
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        P2OUT = shift_direction;
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      } else if (shift_direction == 0x01) {
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        P2OUT = (P2OUT << 1);
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      } else {
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        P2OUT = (P2OUT >> 1);
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      }
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    }
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}
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 // Port1 Interrupt Service Routine using msp430-gcc
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interrupt(PORT1_VECTOR) port1_isr(void) {
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   if (P1IFG & 0x01) {
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     shift_direction ^=  0x81;
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     P1IFG           &= ~0x01;         // Clear Port 1.0 interrupt flag
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   }
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}

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