xiaoxiang781216 commented on code in PR #9916:
URL: https://github.com/apache/nuttx/pull/9916#discussion_r1277574607
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include/nuttx/sensors/sensor.h:
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@@ -595,6 +603,15 @@ struct sensor_cap /* Type: Capacitance */
int32_t rawdata[4]; /* in SI units pF */
};
+struct sensor_gas /* Type: Gas */
+{
+ uint64_t timestamp; /* Units is microseconds */
+ float temperature; /* Temperature in degrees Celsius */
+ float pressure; /* Pressure in millibar or hPa */
+ float humidity; /* Relative humidity in rH */
Review Comment:
> Thank you for the clarification. I started to work on it and registered
the sensors separately. However, i am not sure how to retrieve the data
correctly, since every lowerhalf translates to a sensor_ file. It seems wrong
to open all 3 or 4 files separately to get the data from each one. Is there a
better way to do this?
to handle multiple file handle, you need poll/select, or
libuv(https://github.com/apache/nuttx-apps/tree/master/system/libuv).
> I could not find any examples in nuttx-apps. Also, I have a calibration
function that should be called only once through an ioctl, but the ioctl is
bound to a file descriptor.
it can be done through one of topics.
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