[ECOS] Question about interrupt trigger mode.
Fri Sep 28 10:06:00 GMT 2007
My target uses SMSC LAN91C111 chip,CPU is SH7709S.
As ethernet interrupt,uses IRQ3 line.
I build "net" template,eCos source is updated by CVS checkout.
Please help me next 2 questions.
When IRQ3 aserted,enter into ISR routine,so far so good.
But although IRQ3 line continually hold assert-state(LOW),
and never chang to OFF(HIGH)state,ISR is repeatedly entered.
My question is,if interrupt trigger mode is setted edge trigger mode,
ISR routine is only entered once,isn't it ?
I assume trigger mode is setted by next routine.
vector, level, up );
or Cyg_Interrupt::configure_interrupt routine.
I checked source but never found using HAL_INTERRUPT_CONFIGURE or
Is it only setted by default ?
I like to quarantee it is working egde trigger mode.
Could I know by cheching global area ?
How should I do to be confirmed that ?
After IRQ3 was aserted,does eCos's SMSC LAN91C111 driver delete factors
causing IRQ3 toward LAN chip ?
If it does,and it is possible,please let me know where it is done ?
Or is it user's responsibility to do in ISR ?
Please enlighten me.
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