[riot-notifications] [RIOT-OS/RIOT] Driver for Honeywell HSC series pressure and temperature sensor (#15383)

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Wed Nov 25 11:25:52 CET 2020


@quangphhr commented on this pull request.



> +    int32_t ut = 0;
+
+    /* Read uncompensated temperature value */
+    _read_ut(dev, &ut);
+
+    /* Formular from section 4.0 in 
+     * https://sensing.honeywell.com/i2c-comms-digital-output-pressure-sensors-tn-008201-3-en-final-30may12.pdf */
+    return (int16_t)(ut * 2000 / 2047 - 500);
+}
+
+int32_t hsc_read_pressure(const hsc_t *dev)
+{
+    int32_t up = 0;
+
+    /* Read uncompensated pressure value */
+    _read_up(dev, &up);

the pressure can be negative too, so I modified the function together with the temperature.

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