From 70d4e240d954e66d735e4a0ddce25b80ad441dfa Mon Sep 17 00:00:00 2001
From: drowe67 <drowe67@01035d8c-6547-0410-b346-abe4f91aad63>
Date: Tue, 14 Feb 2017 01:26:58 +0000
Subject: [PATCH] hackrf test util

git-svn-id: https://svn.code.sf.net/p/freetel/code@3032 01035d8c-6547-0410-b346-abe4f91aad63
---
 codec2-dev/octave/hackrf_twotone.m | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)
 create mode 100644 codec2-dev/octave/hackrf_twotone.m

diff --git a/codec2-dev/octave/hackrf_twotone.m b/codec2-dev/octave/hackrf_twotone.m
new file mode 100644
index 00000000..1d5aa025
--- /dev/null
+++ b/codec2-dev/octave/hackrf_twotone.m
@@ -0,0 +1,24 @@
+% hackrf_twotone.m
+%
+% David Rowe Nov 2015
+%
+% Generates a two tone test signal that can be played out of HackRF
+%
+% To play file at 10.7MHz used:
+%   $ hackrf_transfer -t ../octave/twotone.iq -f 10000000 -a 0 -x 47
+%
+% However 2nd harmonic at 21.4 was only -32dBC so not really useful for my application
+% in testing an ADC
+
+Fs = 8E6;
+fc = 2E6;
+f1 = fc;
+f2 = fc+1E3;
+A = 127;
+T = 2;
+
+N = T*Fs;
+t = 0:N-1;
+%s = A*exp(j*2*pi*t*f1/Fs) + A*exp(j*2*pi*t*f2/Fs);
+s = A*exp(j*2*pi*t*f2/Fs);
+save_hackrf("twotone.iq",s);
-- 
2.25.1