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57 lines
885 B
C
57 lines
885 B
C
/*
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* example/example.c - Example application
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*
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* Written 2010 by Werner Almesberger
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* Copyright 2010 Werner Almesberger
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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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#include <stdint.h>
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#include "regs.h"
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static void count(void)
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{
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union {
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uint32_t n;
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uint8_t a[3];
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} c;
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c.n = 0;
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while (1) {
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P0 = c.a[0];
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P2 = c.a[1];
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P3 = c.a[2];
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c.n++;
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}
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}
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void main(void)
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{
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/*
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* VDD monitor enable sequence, section 7.2
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*
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* - enable voltage monitor
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* - wait for monitor to stabilize
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* - enable VDD monitor reset
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*/
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VDM0CN = VDMEN;
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while (!(VDM0CN & VDDSTAT));
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RSTSRC = PORSF;
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/*
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* Go to 24 Mhz
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*/
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OSCICN |= IFCN0 | IFCN1;
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count();
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}
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