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-rw-r--r--controller/fw/src/freq_meas.c2
1 files changed, 1 insertions, 1 deletions
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;
}