altos: Add attiny architecture files

These are designed to work with the ATtiny85 processor, but can
presuambly be easily adapted to others in that series

Signed-off-by: Keith Packard <keithp@keithp.com>

1 files changed, 34 insertions, 0 deletions

diff --git a/src/attiny/ao_exti.h b/src/attiny/ao_exti.h
new file mode 100644
index 00000000..2ea4f47d
--- /dev/null
+++ b/src/attiny/ao_exti.h
@@ -0,0 +1,34 @@
+/*
+ * Copyright © 2012 Keith Packard <keithp@keithp.com>
+ *
+ * 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; version 2 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
+ * 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.,
+ * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
+ */
+
+#ifndef _AO_EXTI_H_
+#define _AO_EXTI_H_
+
+void
+ao_exti_setup_port(uint8_t pin, uint8_t mode, void (*callback)(void));
+
+#define ao_exti_setup(port, pin, mode, callback)	ao_exti_setup_port(pin, mode, callback)
+
+#define ao_exti_enable(gpio, pin) 	(PCMSK |= (1 << (pin)))
+
+#define ao_exti_disable(gpio, pin)	(PCMSK &= ~(1 << (pin)))
+
+#define ao_exti_init()
+
+#define AO_EXTI_MODE_RISING	1
+
+#endif /* _AO_EXTI_H_ */