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, 63 insertions, 0 deletions

diff --git a/src/attiny/ao_led.c b/src/attiny/ao_led.c
new file mode 100644
index 00000000..27bbea69
--- /dev/null
+++ b/src/attiny/ao_led.c
@@ -0,0 +1,63 @@
+/*
+ * Copyright © 2009 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.
+ */
+
+#include "ao.h"
+
+__pdata uint8_t ao_led_enable;
+
+#define LED_PORT	PORTB
+#define LED_DDR		DDRB
+
+void
+ao_led_on(uint8_t colors)
+{
+	LED_PORT |= (colors & ao_led_enable);
+}
+
+void
+ao_led_off(uint8_t colors)
+{
+	LED_PORT &= ~(colors & ao_led_enable);
+}
+
+void
+ao_led_set(uint8_t colors)
+{
+	LED_PORT = (LED_PORT & ~(ao_led_enable)) | (colors & ao_led_enable);
+}
+
+void
+ao_led_toggle(uint8_t colors)
+{
+	LED_PORT ^= (colors & ao_led_enable);
+}
+
+void
+ao_led_for(uint8_t colors, uint16_t ticks) __reentrant
+{
+	ao_led_on(colors);
+	ao_delay(ticks);
+	ao_led_off(colors);
+}
+
+void
+ao_led_init(uint8_t enable)
+{
+	ao_led_enable = enable;
+	LED_PORT &= ~enable;
+	LED_DDR |= enable;
+}