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changeset 79:394daa4ad6e8

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fc-rfcal-txband: dBm to Vout function implemented
author Mychaela Falconia <falcon@freecalypso.org>
date Sat, 15 Jul 2017 21:06:43 +0000
parents 1d3dd589a857
children b0da2db4e36b
files autocal/Makefile autocal/txvout.c
diffstat 2 files changed, 21 insertions(+), 2 deletions(-) [+]
line wrap: on
line diff
--- a/autocal/Makefile	Sat Jul 15 20:47:31 2017 +0000
+++ b/autocal/Makefile	Sat Jul 15 21:06:43 2017 +0000
@@ -11,7 +11,7 @@
 		rxupload.o sockopts.o tsidsock.o
 
 TXBAND_OBJS=	l1tmops.o rvinterf.o sockopts.o tsidsock.o txbandmain.o \
-		txcalchan.o txcalconf.o txpwrmeas.o
+		txcalchan.o txcalconf.o txpwrmeas.o txvout.o
 
 TXBASIS_OBJS=	l1tmops.o rvinterf.o tsidsock.o txpwrmeas.o txstandbas.o
 
@@ -29,7 +29,7 @@
 	${CC} -o $@ ${RXBAND_OBJS}
 
 fc-rfcal-txband:	${TXBAND_OBJS}
-	${CC} -o $@ ${TXBAND_OBJS}
+	${CC} -o $@ ${TXBAND_OBJS} -lm
 
 fc-rfcal-txbasis:	${TXBASIS_OBJS}
 	${CC} -o $@ ${TXBASIS_OBJS}
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/autocal/txvout.c	Sat Jul 15 21:06:43 2017 +0000
@@ -0,0 +1,19 @@
+/*
+ * This module contains the function that converts Tx power values in dBm
+ * (either measured or set targets) to Vout for the purpose of piecewise
+ * linear modeling of APC.
+ */
+
+#include <math.h>
+#include "txband.h"
+
+vout_t
+dbm_to_vout(dbm)
+	double dbm;
+{
+	double milliwatts, vout;
+
+	milliwatts = pow(10.0, dbm / 10.0);
+	vout = sqrt(milliwatts * 0.050);
+	return vout;
+}