only enable ! and ~ if in grbl mode

diff --git a/src/libs/USBDevice/USBSerial/USBSerial.cpp b/src/libs/USBDevice/USBSerial/USBSerial.cpp
index e4ece61..457febe 100644 (file)
--- a/src/libs/USBDevice/USBSerial/USBSerial.cpp
+++ b/src/libs/USBDevice/USBSerial/USBSerial.cpp
@@ -207,14 +207,16 @@ bool USBSerial::USBEvent_EPOut(uint8_t bEP, uint8_t bEPStatus)
             continue;\r
         }\r
 \r
-        if(c[i] == '!'){ // safe pause\r
-            THEKERNEL->set_feed_hold(true);\r
-            continue;\r
-        }\r
+        if(THEKERNEL->is_grbl_mode()) {\r
+            if(c[i] == '!'){ // safe pause\r
+                THEKERNEL->set_feed_hold(true);\r
+                continue;\r
+            }\r
 \r
-        if(c[i] == '~'){ // safe resume\r
-            THEKERNEL->set_feed_hold(false);\r
-            continue;\r
+            if(c[i] == '~'){ // safe resume\r
+                THEKERNEL->set_feed_hold(false);\r
+                continue;\r
+            }\r
         }\r
 \r
         if (flush_to_nl == false)\r