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On RTC's isr!
- From: zhlg_shuhan <zhlg_shuhan at sina dot com>
- To: ecos-discuss at sources dot redhat dot com
- Date: Mon, 15 Jul 2002 11:13:58 +0800
- Subject: [ECOS] On RTC's isr!
hi,all.
why not RTC's isr call dsr_post()?
then,how rtc's dsr() was called?
cyg_uint32 Cyg_RealTimeClock::isr(cyg_vector vector, CYG_ADDRWORD data)
{
// CYG_REPORT_FUNCTION();
#if defined(CYGVAR_KERNEL_COUNTERS_CLOCK_LATENCY) && defined(HAL_CLOCK_LATENCY)
if (measure_clock_latency) {
cyg_int32 delta;
HAL_CLOCK_LATENCY(&delta);
// Note: Ignore a latency of 0 when finding min_clock_latency.
if (delta > 0) {
// Valid delta measured
total_clock_latency += delta;
total_clock_interrupts++;
if (min_clock_latency > delta) min_clock_latency = delta;
if (max_clock_latency < delta) max_clock_latency = delta;
}
}
#endif
CYG_INSTRUMENT_CLOCK( ISR, 0, 0);
HAL_CLOCK_RESET( CYGNUM_HAL_INTERRUPT_RTC, CYGNUM_KERNEL_COUNTERS_RTC_PERIOD );
Cyg_Interrupt::acknowledge_interrupt(CYGNUM_HAL_INTERRUPT_RTC);
#if defined(CYGVAR_KERNEL_COUNTERS_CLOCK_DSR_LATENCY)
HAL_CLOCK_READ(&clock_dsr_start);
#endif
return Cyg_Interrupt::CALL_DSR|Cyg_Interrupt::HANDLED;
}
and in rtc's dsr(),parameter count maybe >1,but when i check
call_pending_DSRS(),i found count=1! why?
zhlg
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