1 files changed, 6 insertions, 2 deletions
diff --git a/gui/stmdsp.cpp b/gui/stmdsp.cpp
index 897e643..1b4bba6 100644
--- a/gui/stmdsp.cpp
+++ b/gui/stmdsp.cpp
@@ -139,13 +139,17 @@ namespace stmdsp
     }
 
     void device::siggen_start() {
-        if (connected())
+        if (connected()) {
+            m_is_siggening = true;
             m_serial.write("W");
+        }
     }
 
     void device::siggen_stop() {
-        if (connected())
+        if (connected()) {
+            m_is_siggening = false;
             m_serial.write("w");
+        }
     }
 
     void device::upload_filter(unsigned char *buffer, size_t size) {