TOPWAY

SMART LCD Command Manual

Protocol V5.04

URL:

www.topwaydisplay.com

www.topwaysz.com

Page: 3 of 19

1

Basic Specifications

TOPWAY Smart LCD serial command is for real-time control and access. Host machine get the data

which input through the Smart LCD interface or provide the data for display.

Smart LCD serial UART interface are mainly base on RS232-C standard, by default, config as 8N1

115200bps.

2

Command Structure

Commands and Response Packet should be format as follow (host

module):

Seq

Code

Code type

Description

1

0xAA

Packet header

1byte

2

Cmd-code

Command

code

1byte

3

Par-data

Parameter or

Data

(*1)

:

:

-

-

:

:

-

-

:

:

-

-

N-3 th

0xCC

Packet tail

4byte

N-2 th

0x33

N-1 th

0xC3

N th

0x3C

Note.

*1. Unless otherwise specified,

all the multi-byte values, data, address’ byte sequence are MSB first, LSB last.

Packet Acknowledgment is two byte in ASCII (module

host):

Response

code

Description

Command (in packet) executed and

wait for next Command

":>"

In ASCII

(0x3a, 0x3e)

Command (in packet) error and

wait for next Command

"!>"

In ASCII

(0x21,0x3e)

15B15B15B15B

Note.

*1. Packet Acknowledgement response to a valid packet only.