generate the grove #defines to easily handle multiple groves

lib/hardware/GwM5Grove.h

@@ -0,0 +1,31 @@
+/*
+  This code is free software; you can redistribute it and/or
+  modify it under the terms of the GNU Lesser General Public
+  License as published by the Free Software Foundation; either
+  version 2.1 of the License, or (at your option) any later version.
+  This code 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
+  Lesser General Public License for more details.
+  You should have received a copy of the GNU Lesser General Public
+  License along with this library; if not, write to the Free Software
+  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+
+  unfortunately there is some typo here: M5 uses GROVE for their connections
+  but we have GROOVE here.
+  But to maintain compatibility to older build commands we keep the (wrong) wording
+*/
+//M5 Grove stuff
+#ifndef _GW5MGROVE_H
+#define _GW5MGROVE_H
+#ifndef GROOVE_IIC
+  #define GROOVE_IIC(...)
+#endif
+#include "GwM5GroveGen.h"
+
+#if defined(_GWI_IIC1) || defined (_GWI_IIC2)
+  #define _GWIIC
+#endif
+
+
+#endif