1. Introduce PETRONE V2

PETRONE V2 is Changed communication module from PETRONE and include controller.

2. Data transfer structure.

PETRONE V2 uses serial communication with external devices, In most cases, the controller and the PC are connected while communicating. The sending and receiving data are structured as follows :

0	1	2	3	4	5	...	N-1	N
Start code		Header				Data	CRC16
Start code		DataType	Length	From	To	Data	CRC16
0x0A	0x55	-	-	-	-	-	-	-

Each item is explained as follows.

Area		Description
Start code		Start data transmission
Header	DataType	Data yype
	Length	Data length
	From	Data transfer device's DeviceType
	To	Data receive device's DeviceType
Data		Send data
CRC16		Check whether the header and the data were delivered correctly http://www.menie.org/georges/embedded/crc16.html

Data and the CRA16 zone use Little Endian. When Little Endian is present, If more than two bytes, low byte is front of the array. You can change it conveniently using Bitconverter in C#.

HEX value	0x1234
Array index	0	1
Big Endian	12	34
Little Endian	34	12

HEX value	0x12345678
Array index	0	1	2	3
Big Endian	12	34	56	78
Little Endian	78	56	34	12

3. Precautions in use

All devices only send data in response when requested.
If a device is specified to receive data, the device will send Ack when it is not requested.
If the data is transmitted via broadcast, If a command is not a data request but a typical one, the device that can process it runs the received command.
If the data is transmitted via broadcast a data requests, the device can be respond data. If more than one device responds to the same data, this can cause conflicts between sending and receiving data. Be careful when you use it.
Ack is not answered for the broadcast.

4. 시리얼 통신 설정

Area	Setting value
Baud Rate	115200
Parity	None
Data Bits	8
Stop Bits	1

5. Driver install

PETRONE V2 controller is automatically recognized in Windows 10. Do not need additional driver.
If the device is not recognized, you need to install device driver.

PETRONE V2

Index