From a1dc923315514ed6f23da5f2c0950830975299f8 Mon Sep 17 00:00:00 2001
From: jaseg <git-bigdata-wsl-arch@jaseg.de>
Date: Mon, 16 Mar 2020 19:19:34 +0100
Subject: Fix serial

---
 controller/fw/src/freq_meas.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

(limited to 'controller/fw/src/freq_meas.c')

diff --git a/controller/fw/src/freq_meas.c b/controller/fw/src/freq_meas.c
index 020e12d..6b9b54e 100644
--- a/controller/fw/src/freq_meas.c
+++ b/controller/fw/src/freq_meas.c
@@ -136,7 +136,13 @@ int adc_buf_measure_freq(uint16_t adc_buf[FMEAS_FFT_LEN], float *out) {
 
     DEBUG_PRINT("done.");
     */
-    *out = (par[1] + first_bin) * binsize_hz;
+    float res = (par[1] + first_bin) * binsize_hz;
+    if (res < 5 || res > 150) {
+        *out = NAN;
+        return -1;
+    }
+    
+    *out = res;
     return 0;
 }
 
-- 
cgit