From 4c7c927f3c1d24aa7ced382a5a417e5314e104c2 Mon Sep 17 00:00:00 2001
From: jaseg <git-bigdata-wsl-arch@jaseg.de>
Date: Wed, 18 Mar 2020 12:58:55 +0100
Subject: Improve frequency measurement error detection

---
 controller/fw/src/freq_meas.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/controller/fw/src/freq_meas.c b/controller/fw/src/freq_meas.c
index 6b9b54e..035ffd4 100644
--- a/controller/fw/src/freq_meas.c
+++ b/controller/fw/src/freq_meas.c
@@ -137,7 +137,7 @@ int adc_buf_measure_freq(uint16_t adc_buf[FMEAS_FFT_LEN], float *out) {
     DEBUG_PRINT("done.");
     */
     float res = (par[1] + first_bin) * binsize_hz;
-    if (res < 5 || res > 150) {
+    if (par[1] < 2 || res < 5 || res > 150 || par[0] < 1) {
         *out = NAN;
         return -1;
     }
-- 
cgit