Merge from Triface project.

[bertos.git] / app / triface / hw / hw_input.h

diff --git a/app/triface/hw/hw_input.h b/app/triface/hw/hw_input.h
new file mode 100644 (file)
index 0000000..6ab0bba
--- /dev/null
+++ b/app/triface/hw/hw_input.h
@@ -0,0 +1,71 @@
+/**
+ * \file
+ * <!--
+ * This file is part of BeRTOS.
+ *
+ * Bertos 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 2 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, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * As a special exception, you may use this file as part of a free software
+ * library without restriction.  Specifically, if other files instantiate
+ * templates or use macros or inline functions from this file, or you compile
+ * this file and link it with other files to produce an executable, this
+ * file does not by itself cause the resulting executable to be covered by
+ * the GNU General Public License.  This exception does not however
+ * invalidate any other reasons why the executable file might be covered by
+ * the GNU General Public License.
+ *
+ * Copyright 2003, 2004, 2006 Develer S.r.l. (http://www.develer.com/)
+ * Copyright 2000 Bernardo Innocenti <bernie@codewiz.org>
+ *
+ * -->>
+ *
+ * \brief Macro for HW_INPUT_H
+ *
+ *
+ * \version $Id$
+ *
+ * \author Andrea Grandi <andrea@develer.com>
+ */
+#ifndef HW_INPUT_H
+#define HW_INPUT_H
+
+/* Set pins as input and enable pull-up */
+#define INPUT_INIT_D do                                        \
+{                                                              \
+       (DDRD &= ~(BV(PD4) | BV(PD5) | BV(PD6) | BV(PD7)));     \
+       (PORTD |= (BV(PD4) | BV(PD5) | BV(PD6) | BV(PD7)));     \
+} while(0)
+
+#define INPUT_INIT_E do                                                \
+{                                                              \
+       (DDRE &= ~(BV(PE4) | BV(PE5) | BV(PE6) | BV(PE7)));     \
+       ATOMIC((PORTE |= (BV(PE4) | BV(PE5) | BV(PE6) | BV(PE7))));     \
+} while(0)
+
+#define INPUT_INIT do { INPUT_INIT_D; INPUT_INIT_E;} while(0)
+
+INLINE uint8_t INPUT_GET(void)
+{
+       uint8_t out_d, out_e;
+       out_d = PIND;
+       out_e = PINE;
+
+       out_d >>= 4;
+       out_e = out_e & 0xF0;
+
+       return out_e | out_d;
+}
+
+#endif // HW_INPUT_H