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Re: [avr-gcc-list] Speed challenge...
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From: |
Lee Mitchell |
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Subject: |
Re: [avr-gcc-list] Speed challenge... |
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Date: |
Fri, 26 Apr 2002 11:19:55 +0100 |
> Hi. I have a challenge. The (working) code below outputs 19 bits
> serially from a 4433 uC to another chip using data, clock, and strobe
> lines. The data comes from 3 lookup arrays of 256 bytes each. At 4MHz on
> a 4433 uC , it takes about 87us to send all 19 bits. I wonder if there
> is a faster way of doing the job?
>
> Rob
<snip>
why not shift the data instead of the mask, that way you won't have to
re-initialise it 3 times. should save a few cycles.
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