Rename tools to ao-<foo>

[fw/altos] / ao-tools / target / beep / beep.c

diff --git a/ao-tools/target/beep/beep.c b/ao-tools/target/beep/beep.c
new file mode 100644 (file)
index 0000000..09c915b
--- /dev/null
+++ b/ao-tools/target/beep/beep.c
@@ -0,0 +1,91 @@
+/*
+ * Copyright © 2008 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.
+ */
+
+sfr at 0x80 P0;
+sfr at 0x90 P1;
+sfr at 0xA0 P2;
+sfr at 0xC6 CLKCON;
+
+sfr at 0xF1 PERCFG;
+sfr at 0xF2 ADCCFG;
+sfr at 0xF3 P0SEL;
+sfr at 0xF4 P1SEL;
+sfr at 0xF5 P2SEL;
+
+sfr at 0xFD P0DIR;
+sfr at 0xFE P1DIR;
+sfr at 0xFF P2DIR;
+sfr at 0x8F P0INP;
+sfr at 0xF6 P1INP;
+sfr at 0xF7 P2INP;
+
+sfr at 0x89 P0IFG;
+sfr at 0x8A P1IFG;
+sfr at 0x8B P2IFG;
+
+#define nop()  _asm nop _endasm;
+
+void
+delay (unsigned char n)
+{
+       unsigned char i = 0;
+
+       n <<= 1;
+       while (--n != 0) {
+               i = 211;
+               while (--i != 0)
+                       nop();
+       }
+}
+
+void
+tone (unsigned char n, unsigned char m)
+{
+       unsigned char   i = 0;
+       while (--m != 0) {
+               while (--i != 0) {
+                       P2 = 0xff;
+                       delay(n);
+                       P2 = 0xfe;
+                       delay(n);
+               }
+       }
+}
+
+void
+high() {
+       tone(1, 2);
+}
+
+void
+low() {
+       tone(2, 1);
+}
+
+main ()
+{
+       CLKCON = 0;
+       /* Set P2_0 to output */
+       P2DIR = 0x01;
+       P1INP = 0x00;
+       P2INP = 0x00;
+       for (;;) {
+               high();
+/*             low();          */
+       }
+}