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sfr at 0x80 P0;
sfr at 0x90 P1;
sfr at 0xA0 P2;
#define PERCFG SFR(0xF1)
#define ADCCFG SFR(0xF2)
#define P0SEL SFR(0xF3)
#define P1SEL SFR(0xF4)
#define P2SEL SFR(0xF5)
sfr at 0xFD P0DIR;
sfr at 0xFE P1DIR;
sfr at 0xFE P2DIR;
sfr at 0x8F P0INP;
sfr at 0xF6 P1INP;
sfr at 0xF7 P2INP;
#define P0IFG SFR(0x89)
#define P1IFG SFR(0x8A)
#define P2IFG SFR(0x8B)
#define nop() _asm \
nop \
_endasm;
void
delay (int n)
{
int i, j, k;
for (k = 0; k < n; k++) {
for (j = 0; j < 100; j++)
for (i = 0; i < 1000; i++)
nop();
}
}
void
dit() {
P1 = 0xff;
delay(1);
P1 = 0xfd;
delay(1);
}
void
dah () {
P1 = 0xff;
delay(3);
P1 = 0xfd;
delay(1);
}
void
charspace () {
delay(2);
}
void
wordspace () {
delay(8);
}
main ()
{
/* Set p1_1 to output */
P1DIR = 0x02;
P1INP = 0x00;
P2INP = 0x00;
for (;;) {
dah(); dit(); dah(); dit(); charspace ();
dah(); dah(); dit(); dah(); wordspace();
}
}
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