HMT080ATA datasheet(13/30 Pages) TOPWAY

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TOPWAY

SMART LCD Command Manual

Protocol V5.04

URL:

www.topwaydisplay.com

www.topwaysz.com

Document Name:SMART LCD Command v5.04 Manual Rev0.2.doc

Page: 3 of 19

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.

1.1 Hardware connection

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

115200bps.

Command Structure

2.1 Communication Packet Structure

Commands and Response Packet should be format as follow (host

module):

Seq

Code

Code type

Description

0xAA

Packet header

1byte

Cmd-code

Command

code

1byte

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.

2.2 Packet Acknowledgment

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.

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