[LPC176x] Emergency Parser Feature (#10516)

Marlin/src/feature/emergency_parser.h

@@ -0,0 +1,61 @@
+/**
+ * Marlin 3D Printer Firmware
+ * Copyright (C) 2016 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ *
+ * Based on Sprinter and grbl.
+ * Copyright (C) 2011 Camiel Gubbels / Erik van der Zalm
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+/**
+ * emergency_parser.h - Intercept special commands directly in the serial stream
+ */
+
+#ifndef _EMERGENCY_PARSER_H_
+#define _EMERGENCY_PARSER_H_
+
+class EmergencyParser {
+
+  // Currently looking for: M108, M112, M410
+  enum State : char {
+    RESET,
+    N,
+    M,
+    M1,
+    M10,
+    M108,
+    M11,
+    M112,
+    M4,
+    M41,
+    M410,
+    IGNORE // to '\n'
+  };
+
+public:
+
+  static EmergencyParser::State state;
+  static bool killed_by_M112;
+
+  EmergencyParser() {}
+
+  static void update(const uint8_t c);
+
+};
+
+extern EmergencyParser emergency_parser;
+
+#endif // _EMERGENCY_PARSER_H_