Motorola USB08 Reference Manual page 114

Source Code Files
void delayHalfBit() {
// subtract ~20 Clocks for Overhead!
// 120 * 5 Clocks = 600 Clocks
_asm("\
lda #120
__dhbl:deca
nop
bne __dhbl
");
}
void delayBitTime() {
delayHalfBit();
delayHalfBit();
}
//----------------------------------------------------------------------------
void initSSCI() {
setTxHigh();
enaTxOut();
enaRxIn();
}
//----------------------------------------------------------------------------
void putSSCI(char c) {
unsigned char n;
unsigned char ccr_save;
// ccr_save = getCCR();
// disableINTR();
setTxLow();
delayBitTime();
n=8;
do {
if((c&1)==0)
setTxLow();
else
setTxHigh();
delayBitTime();
c >>= 1;
} while(--n);
setTxHigh();
delayBitTime();
delayBitTime();
// setCCR(ccr_save);
}
Designer Reference Manual
114
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Source Code Files
// set Output Data Latch H
// enable Output Driver for Tx
// Rx is an Input Line
// save current Interrupt Mask
// disable Interrupts
// send Startbit
// send 8 Databits, LSB first
// send Stopbit
// restore previous Interrupt Mask
USB08 Evaluation Board
MOTOROLA