Hi Experts
I am using ARM11 MPCore and having two questions about the Timer/Counter.
1. Can the Timer send a DMA request while certain condition is met, e.g., it reaches to zero?
2. Is there any hardware counter I can use?
thanks,
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ARM11 MPcore timer and counter
ARM11 MPcore timer and counter
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BigDaveC 
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Posted 13 July 2011 - 07:31 AM
Hi,
> 1. Can the Timer send a DMA request while certain condition is met, e.g., it reaches to zero?
Unfortunately, no. The timers (and Watchdogs) are simple countdown timers that generate interrupts on reaching zero. They can be configured with varying start values and in single-shot and auto reload modes, but that's about it.
> 2. Is there any hardware counter I can use?
What do you mean by a hardware counter? One that counts up instead of down to zero? ARM provides the AMBA Design Kit that contains a dual timer-counter but I understand the behaviour is similar to that of the timers in the MP core.
David
> 1. Can the Timer send a DMA request while certain condition is met, e.g., it reaches to zero?
Unfortunately, no. The timers (and Watchdogs) are simple countdown timers that generate interrupts on reaching zero. They can be configured with varying start values and in single-shot and auto reload modes, but that's about it.
> 2. Is there any hardware counter I can use?
What do you mean by a hardware counter? One that counts up instead of down to zero? ARM provides the AMBA Design Kit that contains a dual timer-counter but I understand the behaviour is similar to that of the timers in the MP core.
David
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