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e5d7e593ec
Most of sam3x8e/timer.c is going to be platform agnostic for any board with standard irq handling. Move the generic code into a new file generic/timer.c. Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
63 lines
1.2 KiB
C
63 lines
1.2 KiB
C
// Main starting point for SAM3x8e boards.
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//
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// Copyright (C) 2016 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 "board/misc.h" // alloc_maxsize
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#include "command.h" // DECL_CONSTANT
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#include "sam3x8e.h" // WDT
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#include "sched.h" // sched_main
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DECL_CONSTANT(MCU, "sam3x8e");
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/****************************************************************
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* watchdog handler
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****************************************************************/
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static void
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watchdog_reset(void)
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{
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WDT->WDT_CR = 0xA5000001;
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}
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DECL_TASK(watchdog_reset);
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static void
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watchdog_init(void)
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{
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uint32_t timeout = 32768 / 2; // 500ms timeout
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WDT->WDT_MR = WDT_MR_WDRSTEN | WDT_MR_WDV(timeout) | WDT_MR_WDD(timeout);
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}
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DECL_INIT(watchdog_init);
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/****************************************************************
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* misc functions
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****************************************************************/
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size_t
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alloc_maxsize(size_t reqsize)
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{
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return reqsize;
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}
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void * __visible
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_sbrk(int nbytes)
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{
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extern char _end;
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static void *heap_ptr = (void *)&_end;
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void *pos = heap_ptr;
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heap_ptr = pos + nbytes;
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return pos;
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}
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// Main entry point
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int
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main(void)
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{
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SystemInit();
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sched_main();
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return 0;
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}
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