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docs/mimxrt/quickref: Add a note about machine.RTC() subseconds.

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Telling that subseconds is not supported and returns always 0.  This was
changed in 913f9ad5ad9bb446c6e4310b6b5eda310098a1cf.

Signed-off-by: robert-hh <robert@hammelrath.com>
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robert-hh 2024-07-10 09:44:17 +02:00 committed by Damien George
parent 87adf11dd2
commit 76dd4facb9
1 changed files with 4 additions and 0 deletions
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docs/mimxrt/quickref.rst
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@ -438,6 +438,10 @@ The i.MXRT MCU supports battery backup of the RTC. By connecting a battery of
current drawn from the battery is ~20µA, which is rather high. A CR2032 coin current drawn from the battery is ~20µA, which is rather high. A CR2032 coin
cell will last for about one year. cell will last for about one year.
Note: In v1.23.0 the support for subseconds was removed. When reading the RTC, 0 will
be returned as value for subsecond, When setting the RTC time, the subsecond
field is ignored. The RTC itself does not provide a microsecond value.
SD card SD card
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