29 lines
652 B
C
29 lines
652 B
C
// Watchdog handler on SAMD21 boards
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//
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// Copyright (C) 2018-2019 Kevin O'Connor <kevin@koconnor.net>
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//
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// This file may be distributed under the terms of the GNU GPLv3 license.
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#include "internal.h" // WDT
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#include "sched.h" // DECL_TASK
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void
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watchdog_reset(void)
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{
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if (!(WDT->SYNCBUSY.reg & WDT_SYNCBUSY_CLEAR))
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WDT->CLEAR.reg = 0xa5;
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}
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DECL_TASK(watchdog_reset);
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void
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watchdog_init(void)
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{
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#if CONFIG_MACH_SAMC21
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WDT->CONFIG.reg = WDT_CONFIG_PER_CYC512; // 500ms timeout
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#elif CONFIG_MACH_SAMX5
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WDT->CONFIG.reg = WDT_CONFIG_PER(6); // 500ms timeout
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#endif
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WDT->CTRLA.reg = WDT_CTRLA_ENABLE;
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}
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DECL_INIT(watchdog_init);
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