Remote-processing RPC-210 Manuel d'utilisateur télécharger pdf (Page 51)

DISPLAY & KEYPAD PORTS BASIC SECTION 11

Page 11-3

DISPLAY CONNECTOR PIN OUT

The display port uses port A of the 82C55 for data and

control. The table below lists a pin number and its

intended function. A display may not use all lines even

though they are available. This is true for the E2 line.

J4 Pin Port A bit Function to display

1 2 Data 6

2 3 Data 7

3 0 Data 4

4 1 Data 5

5 NC No connect

6 NC No connect

7 NC No connect

8 NC No connect

9 5 Read/Write (0 = write)

10 6 Enable signal strobe 1

11 none Angle/contrast adjust

12 4 Register/data select

13 none + 5V power

14 none Ground

15 NC No connect

16 7 Enable signal strobe 2

LC displays operate in 4 bit data transfer m ode. Data

lines 0 - 3 on the display are not used.

COMMANDS

The following RPBASIC-52 com mands are used for the

display and keypad.

Command Function

CLEAR DISPLAY Clears entire display

CLEAR DISPLAY LINE Clears line of display

CONFIG DISPLAY Specifies display type

DISPLAY Prints string at

row/column specified

KEYPA D(n) Reads keypad character

or status.

ON KEYPAD Direct subroutine line to

execute on key press.

DEMONSTRATION PROGRAMS

The following programs may be used to verify proper

operation of a keypad or display. Programs are located

in the BASIC-52 directory.

Program Name Description

KEYPAD1.BAS Read & process keypad

presses in polled mode.

KEYPAD2.BAS Process keypad presses

in interrupt mode.

DISP-1.BAS Display demo for 4 x 20

LC display. Prints tick

time.

DISP-2.BAS Display demo for 4 x 40

LC display. Prints da te

and time.

DISP-3.BAS Demo for 4 x 40 LC

display. Formats and

prints analog inputs 0 and

1 2 ... 46 47 48 49 50 51 52 53 54 55 56 ... 59 60

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Remote-processing RPC-210 Manuel d'utilisateur Page 51

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