27 lines
540 B
C
27 lines
540 B
C
#include "libprof.h"
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/* prof_init(): Initialize the profiler's timer */
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int prof_init(void)
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{
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*TMU0_TCOR = 0xffffffff;
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*TMU0_TCNT = 0xffffffff;
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*TMU0_TCR = 0x0000; /* UNIE=0 Pphi/4 */
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*TMU_TSTR |= 1;
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return 0;
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}
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/* prof_quit(): Free the profiler's timer */
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void prof_quit(void)
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{
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*TMU_TSTR &= ~1;
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}
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/* prof_time(): Time spent in a given context, in microseconds */
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uint32_t prof_time(prof_t prof)
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{
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/* Hardcoded for the default overclock settings */
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int Pphi = 29491200;
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return ((uint64_t)prof.elapsed * 4 * 1000000) / Pphi;
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}
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