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  → /SPARTAN/trunk/src/time/delay.c @ 106

  → /SPARTAN/trunk/src/time/delay.c @ 107

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Ignore whitespace Rev 106 → Rev 107

/SPARTAN/trunk/src/time/delay.c
32,14 → 32,22
#include <arch/asm.h>
#include <arch.h>
/*
* Note that the delay loop is calibrated for each and every CPU in the system.
* Therefore it is necessary to cpu_priority_high() before calling the asm_delay_loop().
/** Active delay
*
* Delay the execution for the given number
* of microseconds (or slightly more). The delay
* is implemented as CPU calibrated active loop.
*
* @param microseconds Number of usec to sleep.
*
*/
void delay(__u32 microseconds)
{
pri_t pri;
/* The delay loop is calibrated for each and every
CPU in the system. Therefore it is necessary to
cpu_priority_high() before calling the asm_delay_loop(). */
pri = cpu_priority_high();
asm_delay_loop(microseconds * CPU->delay_loop_const);
cpu_priority_restore(pri);