analog: use correct unit for dBm/dBV

[libsigrok.git] / include / libsigrok / libsigrok.h

diff --git a/include/libsigrok/libsigrok.h b/include/libsigrok/libsigrok.h
index b533d87ddd9a4314f542b8372ee7b4e22e6b0ec4..e132012470b703d6f7402580016f911254683fe1 100644 (file)
--- a/include/libsigrok/libsigrok.h
+++ b/include/libsigrok/libsigrok.h
@@ -263,7 +263,7 @@ enum sr_unit {
        SR_UNIT_SIEMENS,
        /**
         * An absolute measurement of power, in decibels, referenced to
-        * 1 milliwatt (dBu).
+        * 1 milliwatt (dBm).
         */
        SR_UNIT_DECIBEL_MW,
        /** Voltage in decibel, referenced to 1 volt (dBV). */
@@ -508,7 +508,12 @@ struct sr_analog_encoding {
        gboolean is_signed;
        gboolean is_float;
        gboolean is_bigendian;
-       uint8_t digits;
+       /**
+        * Number of significant digits after the decimal point if positive,
+        * or number of non-significant digits before the decimal point if
+        * negative (refers to the value we actually read on the wire).
+        */
+       int8_t digits;
        gboolean is_digits_decimal;
        struct sr_rational scale;
        struct sr_rational offset;
@@ -522,7 +527,13 @@ struct sr_analog_meaning {
 };
 
 struct sr_analog_spec {
-       uint8_t spec_digits;
+       /**
+        * Number of significant digits after the decimal point if positive,
+        * or number of non-significant digits before the decimal point if
+        * negative (refers to vendor specifications/datasheet or actual
+        * device display).
+        */
+       int8_t spec_digits;
 };
 
 /** Generic option struct used by various subsystems. */
@@ -964,6 +975,9 @@ enum sr_configkey {
        /** Under-voltage condition active. */
        SR_CONF_UNDER_VOLTAGE_CONDITION_ACTIVE,
 
+       /** Trigger level. */
+       SR_CONF_TRIGGER_LEVEL,
+
        /* Update sr_key_info_config[] (hwdriver.c) upon changes! */
 
        /*--- Special stuff -------------------------------------------------*/