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From: ecalvo@2se.es <ecalvo@2se.es>
To: openrisc@lists.librecores.org
Subject: [OpenRISC] tick timer doubt
Date: Fri, 22 Nov 2019 14:41:25 +0100	[thread overview]
Message-ID: <00a201d5a13a$89b42f80$9d1c8e80$@2se.es> (raw)

Hi!!

 

I have some doubts about the tick timer. Could someone help me? I explain
them below

 

*	I don't understand really well the example of or1k timer control
that is in that file: For example, how is ticks variable updated? 
*	If it was updated, I understand that if frequency is 100Hz, a new
tick takes place each 0.01 seg and with 100 ticks, a second has elapsed.
However, If I compile and run this code and, and I open with gtkwave the
generated vcd, I don't understand why the value of TTMR register is 1000000.
Is The value of TTMR register fixed by software using or1k_timer_set_period
function? Is it measured in Hz?

 

Thanks in advance

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             reply	other threads:[~2019-11-22 13:41 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-11-22 13:41 ecalvo [this message]
2019-11-24  0:04 ` [OpenRISC] tick timer doubt Stafford Horne
2019-11-25  8:20   ` ecalvo
2019-11-25  9:22     ` Stafford Horne
2019-11-25 10:09       ` ecalvo
2019-11-25 13:03         ` Stafford Horne
2019-11-25 13:24           ` ecalvo
2019-11-25 23:12             ` Stafford Horne

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