From 93c1be689ac9fce5420a52a207ecb86a2ba1d732 Mon Sep 17 00:00:00 2001
From: Philippe Teuwen <phil@teuwen.org>
Date: Sat, 9 May 2020 00:23:46 +0200
Subject: [PATCH] lfsampling: interruptible only when logging not yet triggered

---
 armsrc/lfsampling.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/armsrc/lfsampling.c b/armsrc/lfsampling.c
index ae61aa612..9f875cd92 100644
--- a/armsrc/lfsampling.c
+++ b/armsrc/lfsampling.c
@@ -259,7 +259,8 @@ uint32_t DoAcquisition(uint8_t decimation, uint8_t bits_per_sample, bool avg, in
     while (!BUTTON_PRESS()) {
 
         // only every 1000th times, in order to save time when collecting samples.
-        if (checked == 1000) {
+        // interruptible only when logging not yet triggered
+        if ((checked == 1000) && (trigger_threshold > 0)) {
             if (data_available()) {
                 checked = -1;
                 break;