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Message
From: beyoelf at 163.com<beyoelf@1...>
Date: Fri Sep 23 04:52:10 CEST 2005
Subject: [openrisc] how to use tick timer exception?
mtspr(SPR_TTMR,0xa0001000L);//set TTMR[M]=2,TTMR[IE]=1
mtspr(SPR_TTCR,0x00000000L);
mtspr(SPR_SR, SPR_SR_TEE | mfspr(SPR_SR));//set SPR_SR_TEE =1
i run it on or1200
i found that the TTMR_IP is set "1" automatically sometimes.
thanks
----- Original Message -----
From: =?unknown-8bit?Q?Gy=F6rgy?= 'nog' Jeney<nog@s...>
To:
Date: Thu Sep 22 12:00:14 CEST 2005
Subject: [openrisc] how to use tick timer exception?
> > i need to use the tick timer to caculate the task time.
> > i had set the tick timer exception address 0x500 in
> reset.S,and point to
> > the timer response function.
> > in the main(),i had set the SPR_SR_TEE and TTMR =
> 0xafffffff,but it
> > coundn't interrupt even if TTCR matched the 0xfffffff.
> > it seemed the timer exception hadnt happened. could some one
> tell me
> > the reason?thx very much./bow
> Could you post the code that doesn't seem to work? And with what
> are you trying
> to run it? (or1ksim, or1200...).
> nog.
>
>
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