openpcd/firmware/src/os/wdt.c @ master
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/* AT91SAM7 Watch Dog Timer code for OpenPCD / OpenPICC
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* (C) 2006 by Harald Welte <hwelte@hmw-consulting.de>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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*/
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#include <lib_AT91SAM7.h>
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#include <AT91SAM7.h>
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#include <os/dbgu.h>
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#include <os/system_irq.h>
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#define WDT_WDD 0xFF
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#define WDT_WDV 0xFF
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#ifdef WDT_DEBUG
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#undef WDT_DEBUG
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#endif/*WDT_DEBUG*/ |
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static void wdt_irq(uint32_t sr) |
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{
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if (sr & 1) |
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AT91F_DBGU_Frame("================> WATCHDOG EXPIRED !!!!!\n\r"); |
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if (sr & 2) |
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AT91F_DBGU_Frame("================> WATCHDOG ERROR !!!!!\n\r"); |
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}
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void wdt_restart(void) |
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{
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AT91F_WDTRestart(AT91C_BASE_WDTC); |
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}
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void wdt_init(void) |
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{
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sysirq_register(AT91SAM7_SYSIRQ_WDT, &wdt_irq); |
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#ifdef WDT_DEBUG
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AT91F_WDTSetMode(AT91C_BASE_WDTC, (WDT_WDD << 16) | |
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AT91C_WDTC_WDDBGHLT | AT91C_WDTC_WDIDLEHLT | |
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AT91C_WDTC_WDFIEN | WDT_WDV); |
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#else
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AT91F_WDTSetMode(AT91C_BASE_WDTC, (WDT_WDD << 16) | |
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AT91C_WDTC_WDDBGHLT | AT91C_WDTC_WDIDLEHLT | |
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AT91C_WDTC_WDRSTEN | WDT_WDV); |
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#endif
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}
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