Curve Display

8/12/2019 Curve Display

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Curve Display

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Data Frame

Data frame is made up by 4 parts, shown as below.

2 Command Set

DGUS Register Space: 0x00H-0xFFH, is written / read by byte.

DGUS Variable Data Memory Space: 0x0000H-0x6FFFH, is written / read by word.

Data in Curve buffer is written / read by word.

The communication between DGUS LCMs & Controllers (MCU) are driven by Variables that you may read andwrite in corresponding address.

Data 1 2 3 4 5

Definition Frame Header Data Length Command DataCRC checksum of the

command and data

Data Length 2 1 1 N 2

DescriptionDefined by R3 &

RA in

CONFIG.TXT

Data length, includecommand, data and

checksum

0x80-0x84Defined by R2 in

CONFIG.TXT

Function CMD Data Description

Access

Register

0x80 ADR(0x00-0xFF)+Data_Pack Write data into the specified register

0x81

ADR(0x00-0xFF)+RD_LEN(0x00-0xFF) Read data from the specified register

ADR(0x00-0xFF)+RD_LEN+Data_Pack Response from the DGUS module

Access

Variable

SRAM

0x82 ADR_H:L(0x0000-0x6FFF)+Data0...DataNWrite data into the specified variable

SRAM

0x83

ADR_H:L(0x0000-0x6FFF)+RD_LEN(0x00-0x7F)Read data from the specified variable

SRAM

ADR_H:L+RD_LEN+Data0...DataN Response from the DGUS module

Trend

Curve

Buffer

0x84 CH_Mode(Byte)+Data0(Word)+...+DataN Write data into trend curve buffer.


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3 Curve Display

There are two methods to display the curve:

Dynamic-curve Display

Basic Graphic Display

3.1 Dynamic-curve Display

3.1.1 Display Dynamic curve in the different areas

Add the dynamic-curve display functions in the different areas. The data source channels should be different.

You can display up to 8 dynamic-curves at the same time.

Display in the different areas simultaneously


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3.1.2 Display Dynamic curve in the same areas

Add the dynamic-curve display functions in the same areas. The data source channels should be different.

You can display up to 8 dynamic-curves at the same time.

Display the curve in the same area


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3.1.3 Send Curve Data to the Data Source Channel

Send:

5A A5 12 84 12 00 3200 7200 9F00 0400 1700 3600 9300 1A

Description:

5A A5 : Frame header.

12: Data length from 84 to 1A

84: Command for Writing Curve

12: Channel 4 & Channel 1, 8bit(00010010)

00 32: Data in channel 1

00 72: Data in channel 4

3.1.4 Reset Dynamic curve

Step 1: Update the kernel to DGUS_V5.5 or above

Please contact our sales to get the latest firmware. For steps on update refer to the chapter 1.4 of DGUS

Development Guide.

Step 2: Write commands to DGUS register to clear the curves.

Register Address Definition Length(Byte) Description

0xEB Trendline_Clear 1

Write a special value to clear the data of corresponding

channels.

0x55: Clear the whole dynamic curve data buffer.

0x56-0x5D: Clear the data of channels respectively from

CH0 to CH7.

After clearing the dynamic curves, this register will be reset.

For example,

Clear all channels

5A A5 03 80 EB 55


03: Data length from 80 to 55

80: Command for writing data into DGUS register

EB: Register Address

55: The special value for clearing the whole dynamic curve data buffer

Clear the special curve

5A A5 03 80 EB 5A


03: Data length from 80 to 5A

80: Command for writing data into DGUS register

EB: Register Address

5A: The special value for clearing the data of channel 4.


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3.2 Basic Graphic Display

String Format

Address Definition Description

VP CMD Command.

VP+1 Data_Pack_Num_MaxMax number of data packs.

For command 0x0002, its number of graph.

VP+2 DATA_Pack

Date Pack For Basic Graphic

CMD Function

Description of Data Format, by word

Relative

Address

Data

LengthDefinition Description

0x0001 Dot0x00 2 (x, y) Coordinate of dot.

0x02 1 Color Color of dot.

0x0002 Line

0x00 1 Color Color of line.

0x01 2 (x, y)0 Coordinate of vertex 0.

0x03 2 (x, y)1 Coordinate of vertex 1.

0x01+2*n 2 (x, y)n Coordinate of vertex n.

0x0003 Rectangle

0x00 2 (x, y)s Coordinate of top-left.

0x02 2 (x, y)e Coordinate of bottom-right.

0x04 1 Color Color of rectangle.

0x0004Rectangle

Area Fill

0x00 2 (x, y)s Coordinate of top-left.

0x02 2 (x, y)e Coordinate of bottom-right.

0x04 1 Color Filled color.

0x0005 Circle

0x00 2 (x, y) Coordinate of center of circle.

0x02 1 Rad Radius of circle.

0x03 1 Color Color of circle.

0x0006Picture

Cut/Paste

0x00 1 Pic_ID Image ID of cutting area.

0x01 2 (x, y)s Coordinate of top-left of cutting area.

0x03 2 (x, y)e Coordinate of bottom-right of cutting area.

0x05 2 (x, y) Paste position on current screen.

0x**07 Icon Display

0x00 2 (x, y) Coordinate of top-left of icon.

0x02 1 ICON_ID Icon ID in icon file, high byte of command specifies address oficon file, display mode is transparent.

0x0008 Area Fill0x00 2 (x, y) Coordinate of sampling dot.

0x02 1 Color Filled color.

0x0009 Vertical Line

0x00 1 Color0

Connect (X0, Y0s), (X0, Y0e) with color0.0x01 1 X0

0x02 1 Y0s

0x03 1 Y0e

Status Flag:

0xFF Current drawing operation finished.


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0xFE This operation will be skipped (ignored).

3.2.1 Curves with Different Color

1)

Add the basic graphic display areas via DGUS_SDK software. As follow, add 2 basic graphics areas with

different VP(0x0000 & 0x1000)

2) Send commands via serial port

Send

5A A5 1B 82 00 00 00 02 00 03 F8 00 00 58 01 8F 00 DB 00 93 01 62 02 95 02 0E 00 AB FF 00 ------ Line 1,

VP=0x0000

5A A5 ---- Frame header

10---- Data length from 82 to 93

82---- Command for writing data into the VP

00 00 ---- VP

00 02---- Draw line command

00 03 ---- Number of line, equal to dots -1.

F8 00---- Color of line

00 58 01 8F---- Coordinate of dot 0

00 DB 01 C0 ---- Coordinate of dot 1

01 62 02 95---- Coordinate of dot 2

02 0E 00 AB---- Coordinate of dot 3

FF 00 ----- End mark

5A A5 1B 82 10 00 00 02 00 03 00 1F 00 37 00 8F 00 1B 00 23 00 32 01 25 01 41 00 17 FF 00------ Line 2,


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VP=0x1000

3.2.1 Curves with Same color

1) Add a basic graphic display areas via DGUS_SDK software, VP=0x0000.

2) Send commands via serial port

A5 5A 13 82 0000 0002 000A F800 0001 00020015 0018FF00 ------ Line 1, save data from 0x0002 to 0x0016 in

VP=0x0000

A5 5A 09 82 0007 0010 0025FF00 ---- Line 2, VP starts from 0x0007

A5 5A 09 82 0009 0011 0030FF00 ---- Line 3, VP starts from 0x0009

A5 5A 0D 82 000B 0013 0034 0015 0036FF00

3)

Modify some dot ( For example, the first dot's address is 0003

A5 5A 07 82 0003 0001 0002----- Modify the first dot

A5 5A 07 82 0005 0015 0018----- Modify the second dot


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3.2.3 Reset Curve

Send:

5A A5 10 82 00 00 00 02 00 00 F8 00 00 58 01 8F 00 DB 00 93 01 62 02 95 02 0E 00 AB

Set Data Pack Num. Maxto 0.

Documents

Curve Display