VeDirectFrameHandler/VeDirectFrameHandler.h at master · cterwilliger/VeDirectFrameHandler · GitHub

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/* frameHandler.h

* Arduino library to read from Victron devices using VE.Direct protocol.

* Derived from Victron framehandler reference implementation.

* 2020.05.05 - 0.2 - initial release

* 2021.02.23 - 0.3 - change frameLen to 22 per VE.Direct Protocol version 3.30

#ifndef FRAMEHANDLER_H_

#define FRAMEHANDLER_H_

const byte frameLen = 22; // VE.Direct Protocol: max frame size is 18

const byte nameLen = 9; // VE.Direct Protocol: max name size is 9 including /0

const byte valueLen = 33; // VE.Direct Protocol: max value size is 33 including /0

const byte buffLen = 40; // Maximum number of lines possible from the device. Current protocol shows this to be the BMV700 at 33 lines.

class VeDirectFrameHandler {

public:

VeDirectFrameHandler();

void rxData(uint8_t inbyte); // byte of serial data to be passed by the application

char veName[buffLen][nameLen] = { }; // public buffer for received names

char veValue[buffLen][valueLen] = { }; // public buffer for received values

int frameIndex; // which line of the frame are we on

int veEnd; // current size (end) of the public buffer

private:

//bool mStop; // not sure what Victron uses this for, not using

enum States { // state machine

IDLE,

RECORD_BEGIN,

RECORD_NAME,

RECORD_VALUE,

CHECKSUM,

RECORD_HEX

};

int mState; // current state

uint8_t mChecksum; // checksum value

char * mTextPointer; // pointer to the private buffer we're writing to, name or value

char mName[9]; // buffer for the field name

char mValue[33]; // buffer for the field value

char tempName[frameLen][nameLen]; // private buffer for received names

char tempValue[frameLen][valueLen]; // private buffer for received values

void textRxEvent(char *, char *);

void frameEndEvent(bool);

void logE(char *, char *);

bool hexRxEvent(uint8_t);

};

#endif // FRAMEHANDLER_H_

VeDirectFrameHandler/VeDirectFrameHandler.h at master · cterwilliger/VeDirectFrameHandler · GitHub

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