Add LED test

[fw/altos] / ao-bringup / ao_led_blink.c

diff --git a/ao-bringup/ao_led_blink.c b/ao-bringup/ao_led_blink.c
new file mode 100644 (file)
index 0000000..1e4c143
--- /dev/null
+++ b/ao-bringup/ao_led_blink.c
@@ -0,0 +1,50 @@
+/*
+ * Copyright © 2010 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_bringup.h"
+
+#define nop()  _asm nop _endasm;
+
+void
+delay (unsigned char n)
+{
+       unsigned char i = 0, j = 0;
+
+       n <<= 1;
+       while (--n != 0)
+               while (--j != 0)
+                       while (--i != 0)
+                               nop();
+}
+
+main()
+{
+       ao_init();
+       /* Set p1_0 and p1_1 to output */
+       P1DIR = 0x03;
+       P1INP = 0x00;
+       for (;;) {
+               P1 = 1;
+               delay(5);
+               P1 = 2;
+               delay(5);
+               P1 = 3;
+               delay(5);
+               P1 = 0;
+               delay(5);
+       }
+}