Add beep/led support.

Support our P2_0 connected buzzer, and formalize LED output support.

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

1 files changed, 54 insertions, 0 deletions

diff --git a/ao_led.c b/ao_led.c
new file mode 100644
index 00000000..c46e2eba
--- /dev/null
+++ b/ao_led.c
@@ -0,0 +1,54 @@
+/*
+ * 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; 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.,
+ * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
+ */
+
+#include "ao.h"
+
+void
+ao_led_init(void)
+{
+	P1SEL &= ~3;
+	P1 &= ~3;
+	P1DIR |= 3;
+}
+
+void
+ao_led_on(uint8_t colors)
+{
+	P1 |= colors;
+}
+
+void
+ao_led_off(uint8_t colors)
+{
+	P1 &= ~colors;
+}
+
+void
+ao_led_set(uint8_t colors)
+{
+	P1 = (P1 & ~3) | colors;
+}
+
+void
+ao_led_for(uint8_t colors, uint16_t ticks)
+{
+	ao_led_on(colors);
+	ao_delay(ticks);
+	ao_led_off(colors);
+}
+