BLTouch V3.0 support (#13406)

Marlin/src/feature/bltouch.h

@@ -0,0 +1,59 @@
+/**
+ * Marlin 3D Printer Firmware
+ * Copyright (C) 2019 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/>.
+ *
+ */
+#pragma once
+
+#include "../inc/MarlinConfigPre.h"
+
+// BLTouch commands are sent as servo angles
+typedef unsigned char BLTCommand;
+
+#define BLTOUCH_DEPLOY    10
+#define BLTOUCH_SW_MODE   60
+#define BLTOUCH_STOW      90
+#define BLTOUCH_SELFTEST 120
+#define BLTOUCH_5V_MODE  140
+#define BLTOUCH_OD_MODE  150
+#define BLTOUCH_RESET    160
+
+class BLTouch {
+public:
+  static void init();
+  static void command(const BLTCommand cmd);
+  static bool triggered();
+
+  FORCE_INLINE static void reset()       { command(BLTOUCH_RESET); }
+  FORCE_INLINE static void set_5V_mode() { command(BLTOUCH_5V_MODE); }
+  FORCE_INLINE static void set_OD_mode() { command(BLTOUCH_OD_MODE); }
+  FORCE_INLINE static void set_SW_mode() { command(BLTOUCH_SW_MODE); }
+
+  FORCE_INLINE static bool deploy() { return set_deployed(true); }
+  FORCE_INLINE static bool stow()   { return set_deployed(false); }
+
+private:
+  FORCE_INLINE static void _deploy()     { command(BLTOUCH_DEPLOY); }
+  FORCE_INLINE static void _stow()       { command(BLTOUCH_STOW); }
+  static bool set_deployed(const bool deploy);
+};
+
+#define BLTOUCH_ANGLES { BLTOUCH_DEPLOY, BLTOUCH_STOW }
+
+extern BLTouch bltouch;