/*===========================================================================*/
|
/*===========================================================================*/
|
/* Copyright (C) 2001 Authors */
|
/* Copyright (C) 2001 Authors */
|
/* */
|
/* */
|
/* This source file may be used and distributed without restriction provided */
|
/* This source file may be used and distributed without restriction provided */
|
/* that this copyright statement is not removed from the file and that any */
|
/* that this copyright statement is not removed from the file and that any */
|
/* derivative work contains the original copyright notice and the associated */
|
/* derivative work contains the original copyright notice and the associated */
|
/* disclaimer. */
|
/* disclaimer. */
|
/* */
|
/* */
|
/* This source file is free software; you can redistribute it and/or modify */
|
/* 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 */
|
/* 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 */
|
/* by the Free Software Foundation; either version 2.1 of the License, or */
|
/* (at your option) any later version. */
|
/* (at your option) any later version. */
|
/* */
|
/* */
|
/* This source is distributed in the hope that it will be useful, but WITHOUT*/
|
/* This source is distributed in the hope that it will be useful, but WITHOUT*/
|
/* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or */
|
/* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or */
|
/* FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public */
|
/* FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public */
|
/* License for more details. */
|
/* License for more details. */
|
/* */
|
/* */
|
/* You should have received a copy of the GNU Lesser General Public License */
|
/* 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, */
|
/* along with this source; if not, write to the Free Software Foundation, */
|
/* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */
|
/* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */
|
/* */
|
/* */
|
/*===========================================================================*/
|
/*===========================================================================*/
|
/* WATCHDOG TIMER */
|
/* WATCHDOG TIMER */
|
/*---------------------------------------------------------------------------*/
|
/*---------------------------------------------------------------------------*/
|
/* Test the Watdog timer: */
|
/* Test the Watdog timer: */
|
/* - Clock source selection. */
|
/* - Clock source selection. */
|
/* */
|
/* */
|
/* Author(s): */
|
/* Author(s): */
|
/* - Olivier Girard, olgirard@gmail.com */
|
/* - Olivier Girard, olgirard@gmail.com */
|
/* */
|
/* */
|
/*---------------------------------------------------------------------------*/
|
/*---------------------------------------------------------------------------*/
|
/* $Rev: 111 $ */
|
/* $Rev: 134 $ */
|
/* $LastChangedBy: olivier.girard $ */
|
/* $LastChangedBy: olivier.girard $ */
|
/* $LastChangedDate: 2011-05-20 22:39:02 +0200 (Fri, 20 May 2011) $ */
|
/* $LastChangedDate: 2012-03-22 21:31:06 +0100 (Thu, 22 Mar 2012) $ */
|
/*===========================================================================*/
|
/*===========================================================================*/
|
|
|
.global main
|
.global main
|
|
|
.set DMEM_BASE, (__data_start )
|
.set DMEM_BASE, (__data_start )
|
.set DMEM_200, (__data_start+0x00)
|
.set DMEM_200, (__data_start+0x00)
|
.set DMEM_250, (__data_start+0x50)
|
.set DMEM_250, (__data_start+0x50)
|
|
|
.set BCSCTL1, 0x0057
|
.set BCSCTL1, 0x0057
|
.set BCSCTL2, 0x0058
|
.set BCSCTL2, 0x0058
|
|
|
.set IE1, 0x0000
|
.set IE1, 0x0000
|
.set IFG1, 0x0002
|
.set IFG1, 0x0002
|
.set WDTCTL, 0x0120
|
.set WDTCTL, 0x0120
|
|
|
WAIT_FUNC:
|
WAIT_FUNC:
|
dec r14
|
dec r14
|
jnz WAIT_FUNC
|
jnz WAIT_FUNC
|
ret
|
ret
|
|
|
main:
|
main:
|
|
|
/* ------- WATCHDOG TEST INTERVAL MODE /64 - SMCLK /2 ------ */
|
/* ------- WATCHDOG TEST INTERVAL MODE /64 - SMCLK /2 ------ */
|
|
|
mov #DMEM_250, r1 ;# Initialize stack & Enable interrupts
|
mov #DMEM_250, r1 ;# Initialize stack & Enable interrupts
|
eint
|
eint
|
bis.b #0x01, &IE1
|
bis.b #0x01, &IE1
|
|
|
mov.b #0x02, &BCSCTL2 ;# SMCLK = MCLK/2
|
mov.b #0x02, &BCSCTL2 ;# SMCLK = MCLK/2
|
mov #0x5a1b, &WDTCTL ;# Enable interval mode /64 & clear counter
|
mov #0x5a1b, &WDTCTL ;# Enable interval mode /64 & clear counter
|
mov #0x0001, r15
|
mov #0x0001, r15
|
|
|
mov #0x0170, r14
|
mov #0x0470, r14
|
call #WAIT_FUNC
|
call #WAIT_FUNC
|
|
|
mov #0x1000, r15
|
mov #0x1000, r15
|
|
mov.b #0x00, &BCSCTL2 ;# SMCLK = MCLK
|
|
|
|
|
/* ------- WATCHDOG TEST INTERVAL MODE /64 - ACLK ------ */
|
/* ------- WATCHDOG TEST INTERVAL MODE /64 - ACLK ------ */
|
|
|
mov #DMEM_250, r1 ;# Initialize stack & Enable interrupts
|
mov #DMEM_250, r1 ;# Initialize stack & Enable interrupts
|
eint
|
eint
|
bis.b #0x01, &IE1
|
bis.b #0x01, &IE1
|
|
|
mov.b #0x00, &BCSCTL1 ;# ACLK = LFXTCLK/1
|
mov.b #0x00, &BCSCTL1 ;# ACLK = LFXTCLK/1
|
mov #0x5a1f, &WDTCTL ;# Enable interval mode /64 & clear counter
|
mov #0x5a1f, &WDTCTL ;# Enable interval mode /64 & clear counter
|
mov #0x1001, r15
|
mov #0x1001, r15
|
|
|
mov #0x1000, r14
|
mov #0x1000, r14
|
call #WAIT_FUNC
|
call #WAIT_FUNC
|
|
|
mov #0x2000, r15
|
mov #0x2000, r15
|
|
|
|
|
|
|
/* ---------------------- END OF TEST --------------- */
|
/* ---------------------- END OF TEST --------------- */
|
end_of_test:
|
end_of_test:
|
nop
|
nop
|
br #0xffff
|
br #0xffff
|
|
|
|
|
/* ---------------------- INTERRUPT ROUTINES --------------- */
|
/* ---------------------- INTERRUPT ROUTINES --------------- */
|
|
|
WDOG_VECTOR:
|
WDOG_VECTOR:
|
xor #0x0001, r5 ; # Toggle r5[0] for testbench stimulus check
|
xor #0x0001, r5 ; # Toggle r5[0] for testbench stimulus check
|
reti
|
reti
|
|
|
|
|
/* ---------------------- INTERRUPT VECTORS --------------- */
|
/* ---------------------- INTERRUPT VECTORS --------------- */
|
|
|
.section .vectors, "a"
|
.section .vectors, "a"
|
.word end_of_test ; Interrupt 0 (lowest priority)
|
.word end_of_test ; Interrupt 0 (lowest priority)
|
.word end_of_test ; Interrupt 1
|
.word end_of_test ; Interrupt 1
|
.word end_of_test ; Interrupt 2
|
.word end_of_test ; Interrupt 2
|
.word end_of_test ; Interrupt 3
|
.word end_of_test ; Interrupt 3
|
.word end_of_test ; Interrupt 4
|
.word end_of_test ; Interrupt 4
|
.word end_of_test ; Interrupt 5
|
.word end_of_test ; Interrupt 5
|
.word end_of_test ; Interrupt 6
|
.word end_of_test ; Interrupt 6
|
.word end_of_test ; Interrupt 7
|
.word end_of_test ; Interrupt 7
|
.word end_of_test ; Interrupt 8
|
.word end_of_test ; Interrupt 8
|
.word end_of_test ; Interrupt 9
|
.word end_of_test ; Interrupt 9
|
.word WDOG_VECTOR ; Interrupt 10 Watchdog timer
|
.word WDOG_VECTOR ; Interrupt 10 Watchdog timer
|
.word end_of_test ; Interrupt 11
|
.word end_of_test ; Interrupt 11
|
.word end_of_test ; Interrupt 12
|
.word end_of_test ; Interrupt 12
|
.word end_of_test ; Interrupt 13
|
.word end_of_test ; Interrupt 13
|
.word end_of_test ; Interrupt 14 NMI
|
.word end_of_test ; Interrupt 14 NMI
|
.word main ; Interrupt 15 (highest priority) RESET
|
.word main ; Interrupt 15 (highest priority) RESET
|
|
|
