Unitech PT630, Programming Reference Manual

Page: 54 / 73

PT630 Programming Reference Guide Page 54 of 59
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1.8.3 Send Character to RS232 Port
Entry Parameter: AH = 2
AL = character
Return Value: None
Note: Only for NONE communication protocol
Example:
void TC_232_char_O(unsigned char ch)
{
regs.h.ah = 2;
regs.h.al = ch;
int86(0X33&regs,&regs);
}
1.8.4 Enable RS-232 Port
Entry Parameter: AH = 3
Return Value: None
Example:
void TC_232_enable()
{
regs.h.ah = 3;
int86(0x33,&regs,&regs);
}
1.8.5 Disable RS-232 Port
Entry Parameter: AH = 4
Returned Value: None
Example:
void TC_232_disable()
{
regs.h.ah = 4;
int86(0X33&regs,&regs);
}