Add SR_CONF_POWERMETER.

include/libsigrok/libsigrok.h

@@ -703,6 +703,9 @@ enum sr_configkey {
 	/** The device can act as a function generator. */
 	SR_CONF_SIGNAL_GENERATOR,
 
+	/** The device can measure power. */
+	SR_CONF_POWERMETER,
+
 	/* Update sr_key_info_config[] (hwdriver.c) upon changes! */
 
 	/*--- Driver scan options -------------------------------------------*/

src/hwdriver.c

@@ -62,6 +62,7 @@ static struct sr_key_info sr_key_info_config[] = {
 	{SR_CONF_ELECTRONIC_LOAD, SR_T_STRING, NULL, "Electronic load", NULL},
 	{SR_CONF_SCALE, SR_T_STRING, NULL, "Scale", NULL},
 	{SR_CONF_SIGNAL_GENERATOR, SR_T_STRING, NULL, "Signal generator", NULL},
+	{SR_CONF_POWERMETER, SR_T_STRING, NULL, "Power meter", NULL},
 
 	/* Driver scan options */
 	{SR_CONF_CONN, SR_T_STRING, "conn",