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AdderII: Writing an ISR for the CPM timers
- From: "Tzahi" <tzahi at terasync dot net>
- To: "Posting to" <ecos-discuss at sources dot redhat dot com>
- Date: Tue, 4 May 2004 14:07:20 +0200
- Subject: [ECOS] AdderII: Writing an ISR for the CPM timers
Hello
I am using an AdderII board (MPC852T) running eCos 2.0.
I would like to write an ISR that would be activated exactly every 100msec.
(I found that using the cyg_alarm had not been accurate enough for my
needs).
I can use the CPM timers for measuring a TimeStamps in a 48MHz accuracy.
I know that there is a possibility to initialize the CPM's timers for
generating CYGNUM_HAL_INTERRUPT_CPM_TIMER. (So I can run my ISR when a
100msec timer expires).
Had anyone managed to do so - on the AdderII?
How can I associate my ISR during initialization, without changing the code
of hal_arbitration_isr_cpm() etc. ?
I would appreciate a code section that enables all this.
Many thanks
Tzahi Manistersky
=======================================
Tzahi Manistersky
mailto:tzahi@terasync.net
Software Engineer
TeraSync LTD. http://www.terasync.net/
Tel: +972(3)5360202 ext:1222
Fax: +972(3)5360202
13 Altalef St., Industrial Zone - Yehud
P.O.Box. 160, Yehud, 56000
Israel
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