Subversion Repositories openmsp430

/*===========================================================================*/
/* Copyright (C) 2001 Authors                                                */
/*                                                                           */
/* This source file may be used and distributed without restriction provided */
/* that this copyright statement is not removed from the file and that any   */
/* derivative work contains the original copyright notice and the associated */
/* disclaimer.                                                               */
/*                                                                           */
/* This source file is free software; you can redistribute it and/or modify  */
/* it under the terms of the GNU Lesser General Public License as published  */
/* by the Free Software Foundation; either version 2.1 of the License, or    */
/* (at your option) any later version.                                       */
/*                                                                           */
/* This source is distributed in the hope that it will be useful, but WITHOUT*/
/* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or     */
/* FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public       */
/* License for more details.                                                 */
/*                                                                           */
/* You should have received a copy of the GNU Lesser General Public License  */
/* along with this source; if not, write to the Free Software Foundation,    */
/* Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA        */
/*                                                                           */
/*===========================================================================*/
/*                                  TIMER A                                  */
/*---------------------------------------------------------------------------*/
/* Test the timer A:                                                         */
/*                        - Check the timer clock input mux.                 */
/*                                                                           */
/* Author(s):                                                                */
/*             - Olivier Girard,    olgirard@gmail.com                       */
/*                                                                           */
/*---------------------------------------------------------------------------*/
/* $Rev: 141 $                                                                */
/* $LastChangedBy: olivier.girard $                                          */
/* $LastChangedDate: 2012-05-05 23:22:06 +0200 (Sat, 05 May 2012) $          */
/*===========================================================================*/

.include "pmem_defs.asm"

.global main

WAIT_FUNC:
        dec r14
        jnz WAIT_FUNC
        ret
        
main:
        mov  #DMEM_250, r1      ; # Initialize stack pointer
        mov  #0x0000, &DMEM_200
        mov  #0x0000, r15

        mov.b  #0x00, &BCSCTL1  ; # ACLK /1
        mov.b  #0x06, &BCSCTL2  ; # SMCLK = MCLK/8

        
       /* --------------   TIMER A TEST:  INPUT MUX - TACLK  ----------------- */

        mov  #0x0000, &TACTL
        mov  #0x0000, &TACCTL0
        dint

        mov  #0x0000, &TACTL
        mov  #0x0000, &TACCTL0
        mov  #0x0000, &TAR
        mov  #0x0062, &TACTL    ; # Continuous mode, /2
        mov  #0x0001, r15
        mov  #0x0100, r14
        call #WAIT_FUNC

        dint            
        mov  #0x0000, &DMEM_200
        mov  #0x1000, r15


       /* --------------   TIMER A TEST:  INPUT MUX - ACLK  ----------------- */

        mov  #0x0000, &TACTL
        mov  #0x0000, &TACCTL0
        dint

        mov  #0x0000, &TACTL
        mov  #0x0000, &TACCTL0
        mov  #0x0000, &TAR
        mov  #0x0162, &TACTL    ; # Continuous mode, /2
        mov  #0x1001, r15
        mov  #0x0100, r14
        call #WAIT_FUNC

        dint            
        mov  #0x0000, &DMEM_200
        mov  #0x2000, r15


       /* --------------   TIMER A TEST:  INPUT MUX - SMCLK  ----------------- */

        mov  #0x0000, &TACTL
        mov  #0x0000, &TACCTL0
        dint

        mov  #0x0000, &TACTL
        mov  #0x0000, &TACCTL0
        mov  #0x0000, &TAR
        mov  #0x0262, &TACTL    ; # Continuous mode, /2
        mov  #0x2001, r15
        mov  #0x0100, r14
        call #WAIT_FUNC

        dint            
        mov  #0x0000, &DMEM_200
        mov  #0x3000, r15

        
       /* --------------   TIMER A TEST:  INPUT MUX - INCLK  ----------------- */

        mov  #0x0000, &TACTL
        mov  #0x0000, &TACCTL0
        dint

        mov  #0x0000, &TACTL
        mov  #0x0000, &TACCTL0
        mov  #0x0000, &TAR
        mov  #0x0362, &TACTL    ; # Continuous mode, /2
        mov  #0x3001, r15
        mov  #0x0100, r14
        call #WAIT_FUNC

        dint            
        mov  #0x0000, &DMEM_200
        mov  #0x4000, r15

                
        /* ----------------------         END OF TEST        --------------- */
end_of_test:
        nop
        br #0xffff


        /* ----------------------      INTERRUPT ROUTINES    --------------- */

TIMERA_CCR0_VECTOR:
        inc  &DMEM_200
        reti

        
TIMERA_TAIV_VECTOR:
        mov     &TAR, &DMEM_204
        mov    &TAIV, &DMEM_206
        reti


        /* ----------------------         INTERRUPT VECTORS  --------------- */

.section .vectors, "a"
.word end_of_test        ; Interrupt  0 (lowest priority)    <unused>
.word end_of_test        ; Interrupt  1                      <unused>
.word end_of_test        ; Interrupt  2                      <unused>
.word end_of_test        ; Interrupt  3                      <unused>
.word end_of_test        ; Interrupt  4                      <unused>
.word end_of_test        ; Interrupt  5                      <unused>
.word end_of_test        ; Interrupt  6                      <unused>
.word end_of_test        ; Interrupt  7                      <unused>
.word TIMERA_TAIV_VECTOR ; Interrupt  8                      <unused>
.word TIMERA_CCR0_VECTOR ; Interrupt  9                      <unused>
.word end_of_test        ; Interrupt 10                      Watchdog timer
.word end_of_test        ; Interrupt 11                      <unused>
.word end_of_test        ; Interrupt 12                      <unused>
.word end_of_test        ; Interrupt 13                      <unused>
.word end_of_test        ; Interrupt 14                      NMI
.word main               ; Interrupt 15 (highest priority)   RESET