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rtimer implementation (not well tested)

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sprintf that use strformat, so there's no need to pull in the newlib
implementation.
Build system improvements.
This commit is contained in:
ksb 2007-08-21 09:03:55 +00:00
parent 1ca82694f5
commit 792eae91c6
15 changed files with 294 additions and 67 deletions
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49
cpu/at91sam7s/rtimer-arch.c Normal file
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#include "rtimer-arch.h"
#include <AT91SAM7S64.h>
#include "rtimer-arch-interrupt.h"
#define DEBUG 1
#if DEBUG
#include <stdio.h>
#define PRINTF(...) printf(__VA_ARGS__)
#else
#define PRINTF(...)
#endif
static rtimer_clock_t offset;
void
rtimer_arch_init(void)
{
offset = 0;
RTIMER_ARCH_TIMER_BASE->TC_CMR =
(AT91C_TC_WAVE | AT91C_TC_WAVESEL_UP | AT91C_TC_CLKS_TIMER_DIV5_CLOCK);
RTIMER_ARCH_TIMER_BASE->TC_RA = 0xffff;
RTIMER_ARCH_TIMER_BASE->TC_IER = AT91C_TC_CPAS;
*AT91C_PMC_PCER = (1 << RTIMER_ARCH_TIMER_ID);
AT91C_AIC_SMR[RTIMER_ARCH_TIMER_ID] =
AT91C_AIC_SRCTYPE_INT_POSITIVE_EDGE | 6;
AT91C_AIC_SVR[RTIMER_ARCH_TIMER_ID] = (unsigned long)rtimer_interrupt;
*AT91C_AIC_IECR = (1 << RTIMER_ARCH_TIMER_ID);
RTIMER_ARCH_TIMER_BASE->TC_CCR = AT91C_TC_SWTRG | AT91C_TC_CLKEN;
PRINTF("rtimer_arch_init: Done\n");
}
void
rtimer_arch_schedule(rtimer_clock_t t)
{
RTIMER_ARCH_TIMER_BASE->TC_RA = t + offset;
PRINTF("rtimer_arch_schedule: %d\n",t);
}
void
rtimer_arch_set(rtimer_clock_t t)
{
offset = t - RTIMER_ARCH_TIMER_BASE->TC_CV;
}
rtimer_clock_t
rtimer_arch_now(void)
{
return RTIMER_ARCH_TIMER_BASE->TC_CV + offset;
}