I have uploaded a new Digital Comparator component (DCmp) that is almost as fast (1/2 BUS_CLK frequency) as the Infineon version but uses significantly less PSoC resources. It also can perform SIGNED comparisons!
DCmp-V2-0-component-Upgrade-to-DCmp-with-optional-HW-inputs
Here's a quick look at some of the features compared to the Infineon component.
|
Method
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Infineon Digital Comparator
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CONSULTRON DCmp
|
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Input load
|
HW
|
HW, DMA or CPU
|
|
Threshold load
|
HW
|
DMA or CPU
|
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Number of simultaneous inputs
|
1
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1 or 2
|
|
Number of simultaneous comparisons
|
1
|
1 or 2
|
|
Simultaneous comparison outputs
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1 HW
|
1 to 6 HW types
|
|
Data Widths
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1- to 32- bits
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1- to 32- bits
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Comparison output glitch filter
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No (async)
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Yes (load signal sync)
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Relative PSoC resource allocation*
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>=(1/3)x@8-bits
>=(2/9)x@16-bits
>=(2.5/13)x@24-bits
>=(3/17)x@32-bits
|
(1/1)x @ 1- to 8-bits + 1 Datapath
(1/1)x @ 9- to 16-bits + 2 Datapath
(1/1)x @ 17- to 24-bits + 3 Datapath
(1/1)x @ 25- to 32-bits + 4 Datapath
|
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Relative Comparison Speed
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Fastest (async) (~10ns)
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Extremely fast using HW(1/2 BUS_CLK cmps/sec)
Very fast using DMA (>4M cmps/sec)
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|
Signed comparisons
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No
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Yes
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Check it out.
I suggest this thread be used to share ideas how to use this component in creative ways.
Len
"Engineering is an Art. The Art of Compromise."
