Delta ASD-A3-0121, Руководство пользователя

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MODBUS Communication ASDA-A3
9-14
Revision December, 2017
9
outportb (PORT+BRDH,0x00);
outportb
(PORT+LCR,0x06); /* set prorocol
<7,E,1> = 1AH, <7,O,1> = 0AH
<8,N,2> = 07H <8,E,1> = 1BH
<8,O,1> = 0BH */
for
( I = 0; I<=16; I++ ) {
while
( !(inportb(PORT+LSR) & 0x20) ); /* wait until THR empty */
outportb
(PORT+THR,tdat[I]); /* send data to THR */
}
I = 0;
while ( !kbhit() ) {
if
( inportb(PORT+LSR)&0x01 ) { /* b0==1, read data ready */
rdat[I++] = inportb(PORT+RDR); /* read data from RDR */
}
}
}