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doc/driver-guide.md: add a note about float

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floating point variables should generally be avoided.
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Benjamin Valentin 2019-11-28 19:08:36 +01:00
parent c68470fc3d
commit a8b540adcf
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doc/doxygen/src/driver-guide.md
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@ -21,6 +21,10 @@ already converted values in some physical unit instead of RAW data, so that
users can work directly with data from different devices directly without having
to care about device specific conversion.
However, please avoid the use of `float` or `double`. Instead, multiply to the
next SI (or appropriate) unit. E.g. if an ADC would return values like `1.23 V`,
chose to return `1230 mV` instead.
Additionally towards ease of use, all device drivers in RIOT should provide a
similar 'look and feel'. They should behave similar concerning things like their
state after initialization, like their used data representation and so on.