gpio: add initial implementation.

1 files changed, 37 insertions, 0 deletions

diff --git a/include/rin/gpio.h b/include/rin/gpio.h
new file mode 100644
index 0000000..83ca934
--- /dev/null
+++ b/include/rin/gpio.h
@@ -0,0 +1,37 @@
+/*
+ * The Rin Library – gpio module
+ *
+ * Copyright (C) 2016 Gediminas Jakutis
+ *
+ * This library 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; version 2.1
+ * of the License.
+ *
+ * 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
+ * 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
+ */
+
+#ifndef LIBRIN_GPIO_INCLUDED
+#define LIBRIN_GPIO_INCLUDED
+
+enum rin_gpiotype {
+	rin_gpio_in,
+	rin_gpio_out,
+	rin_gpio_closed
+};
+
+unsigned int rin_gpio_open(const unsigned int num, const enum rin_gpiotype type);
+unsigned int rin_gpio_close(const unsigned int num);
+unsigned int rin_gpio_setval(const unsigned int num, const unsigned int val);
+unsigned int rin_gpio_readval(const unsigned int num, unsigned int * const val);
+unsigned int rin_gpio_pin_exists(const unsigned int pin);
+unsigned int rin_gpio_get_pincount(void);
+
+#endif /* LIBRIN_GPIO_INCLUDED */