libsigrok.h: Add measured quantity and units used by Radioshack 22-812

The Radioshack 22-812 can measure parameters such as transistor gain,
dbm, etc. Add those to libsigrok.h.

The SR_UNIT_UNITLESS is for quantities that do not have units. Any
ratio or gain are just factors, whic do not have units. Specifically,
a transistor's gain, or hFE, is a unitless quantity.

Signed-off-by: Alexandru Gagniuc <redacted>

diff --git a/libsigrok.h b/libsigrok.h
index 595f19171194db950a745465c2e2d4cb7f1f1f8b..da770f44254d6180cba662a817fc4789aceb1bf2 100644 (file)
--- a/libsigrok.h
+++ b/libsigrok.h
@@ -148,6 +148,10 @@ enum {
        SR_MQ_CONTINUITY,
        SR_MQ_PULSE_WIDTH,
        SR_MQ_CONDUCTANCE,
+       /** For a measurement of electrical power, usually in W, or dBm */
+       SR_MQ_POWER,
+       /** Usually for measuring a transistor's gain, or h_FE*/
+       SR_MQ_GAIN,
 };
 
 /* sr_datafeed_analog.unit values */
@@ -163,7 +167,15 @@ enum {
        SR_UNIT_PERCENTAGE,
        SR_UNIT_BOOLEAN,
        SR_UNIT_SECOND,
+       /** Unit of conductance, the inverse of resistance */
        SR_UNIT_SIEMENS,
+       /** An absolute measurement of power, in decibels, referenced to
+        * 1 milliwatt */
+       SR_UNIT_DECIBEL_MW,
+       /** Measurements that intrinsically, do not have units attached, such
+        * as ratios, gains, etc
+        * Specifically, a transistor's gain (hFE) is a unitless quantity*/
+       SR_UNIT_UNITLESS,
 };
 
 /** sr_datafeed_analog.flags values */