Thanks Jan.
On 09/05/2020 20:14, Jan Kandziora wrote:
Am 09.05.20 um 14:42 schrieb Mick Sulley:
I understand how caching works for temperature sensors, use of
simultaneous etc, but how do I/O modules work in that respect?
I am particularly interested in DS2413. Is there any difference between
"owwrite /TestIO/PIO.A 1" and "owwrite /uncached/TestIO/PIO.A 1",
They both write to the chip. No difference.
similarly with reading, is it safer to use "owread
/uncached/TestIO/PIO.A" rather than "owread /TestIO/PIO.A"
Only reading /uncached will give you the current value the chip read
each time. The cached one may be seconds old, depending on when you read
it from the chip last time.
and is there
a performance hit?
Reading a cached value does not introduce any bus transfer.
Kind regards
Jan
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