Remote-processing RPC-52 User Manual download pdf (Page 14)

SERIAL PORTS CHAPTER 4

Page 12

COMMANDS

The following is a list of RPBASIC-52 commands used

for serial I/O. Variations for many comm ands are not

listed here. These commands and functions are

explained in the BASIC-52 Programm ing Manual and

RPBASIC-52 Software Supplement in this manual.

Command Function

CLEAR COM$ Clears serial input buffer

COM$ Returns string from buffer

COM Returns number of characters

in buffer

CONFIG BAUD Sets serial port parameters

GET Returns a character from the

serial buffer

INPUT Receives string from port

LIST Outputs program listing

PRINT Outputs data in various

formats

SPC Print out n number of spaces

TAB Tabs to predetermined

positions

UI0 Reroute inputs to COM0

UI1 Route inputs to COM1

UO0 Rerou te PRIN T statement to

COM0

UO1 Route P RINT statement to

COM1

USING PRINT formatting statement

SERIAL PORT PIN OUT

Pin outs for J2 and J3 are shown below. COM 0 (J3)

only has TXD and RXD active. U nused pins are open.

COM0 COM1 Name Direction

J3 J2 from card

3 3 Tx Out

4 RTS In

5 5 RXD In

6 CTS Out

9 9 Ground

10 10 +5

COM0 pin 6 has a 4.7K resistor to + 5V.

1 2 ... 9 10 11 12 13 14 15 16 17 18 19 ... 35 36

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