+++ /dev/null
-/*
- * 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(); */
- }
-}