Manual_VSH101_Command_Table – VitalSigns Technology

VSH101 1-Lead ECG Holter Communication Packet Command

VSH101 BLE Communication Flow

Initial communication flow after connection VSH101:

When VSC MODE has not been performed, instructions must be communicated every 10 seconds to stay connected.

The VSC MODE START and VSC MODE STOP command are simple. Like the other BLE commands introduced before. The VSC MODE READ command will be a little more complicated. When user issues the VSC_MODE_READ commad, device will send back 968 bytes data. The next section will give you a more detail description about the VSC Mode Data Format. Each VSC MODE READ command carries 200 ms ECG data and related information. It means user has to issues at lease 5 times VSC MODE READ command every second or the data will be overflow.

VSH101 BLE Profile :

Service profile: 6e400001-b5a3-f393-e0a9-e50e24dcca9e

Write Characteristic profile: 6e400002-b5a3-f393-e0a9-e50e24dcca9e

Notify Characteristic profile: 6e400003-b5a3-f393-e0a9-e50e24dcca9e

Write Characteristic Profile Packet Command Data Format :

PCode : The Write/Noitfy Characteristic command is same value, set same the ‘Cmd’ byte.

Group : The Group Command byte.

Cmd. : The Group sub Command byte.

ChkSum : The (Check Sum) is the sum of the entire packet.

MISO : Setting the notify receive length. (Little Endian)

MOSI : Setting the write command data length.(Little Endian)

Parameter Data : The parameter setting.(Little Endian)

Cmd Data : The data for command. (Little Endian)

Notify Characteristic Profile Packet Command Data Format :

PCode. : The write/notify command is same, usually same the “Cmd” byte.

Group : The group same the write command.

Ack : Confirm that the ‘Ack’ byte is ‘A’, then the command is correct this time and reply, otherwise will receive ‘N’.

ChkSum : (check sum) is the sum of bytes % 256 of the entire packet.

Index : The receive data memory index.(Little Endian)

Length : The packet data length.(Little Endian)

Cmd Data : The data for command.(Little Endian)

Check Sum Data Get Example Code:

VSH101 Packet Command Table

Name	PCode	Group	Cmd	Description
Version	0x00	0xC0	0x00	Device FW Version
Time Set	0x40	0xC0	0x40	Set Device Time
Time Get	0x41	0xC0	0x41	Get Device Time
VSC Mode Start	0x64	0xC2	0x64	VSC MODE Measurement Start, VSC MODE Flow Chart
VSC Mode Stop	0x65	0xC2	0x65	VSC MODE Measurement Stop, VSC MODE Flow Chart
VSC Mode Read	0x6A	0xC2	0x6A	VSC MODE Read Data, VSC MODE Flow Chart
VSC Mode Type Set	0x70	0xC2	0x70	VSC MODE TYPE Setting
Soft Regsitry Read	0x00	0xA5	0x00	Soft Registry Command Read
Soft Regsitry Write	0x01	0xA5	0x01	Soft Registry Command Write

1. Version Packet Command

Name	Hex Data
PCode	0x00
Group Id	0xC0
Cmd	0x00
Check sum	0xE0
MOSI	0x0000
MISO	0x0020
Parameter Data	00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Cmd Data

2. Time Get Packet Command

Name	Hex Data
PCode	0x41
Group Id	0xC0
Cmd	0x41
Check sum	0x52
MOSI	0x0000
MISO	0x0010
Parameter Data	00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Cmd Data

3. Time Set Packet Command

Name	Hex Data
PCode	40
Group Id	C0
Cmd	40
Check sum	44
MOSI	0x0010
MISO	0x0000
Parameter Data	00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Cmd Data	E7 07 05 11 13 13 17 08 3B D8 64 64 80 70 00 00

4. VSC Mode Type Set Packet Command

Name	Hex Data
PCode	0x70
Group Id	0xC2
Cmd	0x70
Check sum	0xAB
MOSI	0x0004
MISO	0x0000
Parameter Data	00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Cmd Data	01 00 00 00

5. VSC Mode Start Packet Command

Name	Hex Data
PCode	0x64
Group Id	0xC2
Cmd	0x64
Check sum	0x8A
MOSI	0x0000
MISO	0x0000
Parameter Data	00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Cmd Data

6. VSC Mode Stop Packet Command

Name	Hex Data
PCode	0x65
Group Id	0xC2
Cmd	0x65
Check sum	0x8C
MOSI	0x0000
MISO	0x0000
Parameter Data	00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Cmd Data

7. VSC Mode Read Packet Command

Name	Hex Data
PCode	0x6A
Group Id	0xC2
Cmd	0x6A
Check sum	0xE3
MOSI	0x0000
MISO	0x0238
Parameter Data	00 00 00 00 01 00 00 00 00 00 00 00 00 00 00 00
Cmd Data

Cmd Data format “index” set loops back from 0 to 999 after VSC Mode starts executing.

When Packet “index” loops back from 0 to 999 after VSC Mode starts executing, if 8000 is received, the data is not ready or 8000 is received for more than 1 second in a row, the VSC MODE Queue is overflowed

VSC MODE TYPE 0 Data Format

As mentioned, There are 968 bytes of returning data of VSC MODE READ. It includes two parts:

ECG DATA (800 bytes) – 2 channel ECG datas

INFO DATA (168 bytes) – 42 information

The detail description is listed below:

The INFO Data included 26 information for user to do the monitoring. It is listed below:

It includes Time (1), temperature(2), ECG data(2, 3), G-Sensor (5, 6, 7), Battery Status (8, 9), HRV (10, 11, 12, 13, 14, 15, 16), Barometer values(17, 18), and 5 G-Sensor points during the period (GS_X0..5, GS_Y0..5, GS_Z0..5).

Since the G-Sensor inside will keep monitor patient’s activity in a sampling rate of 25 Hz. A VSC Mode Data includes 200 ms information and it means the VSC Mode Data will have 5 points of G-Sensor data and they are GS_X0..5, GS_Y0..5, GS_Z0..5.

VSC MODE TYPE 1 Data Format

As mentioned, There are 568 bytees of returning data of VSC MODE READ. It includes two parts:

ECG DATA (400 bytes) – 1 channel ECG datas