Arduino-vedirect

Arduino library for reading ve.direct text protocol messages. Supports hardware and software serial

The Collect() method listens for incoming serial data and returns as soon as the checksum matches. This results in a wait of less than 1 second for data. Now we can call GetValue() to retrieve the different values we got from the collection.

Currently this is in use in a LoRa sensor connected to a smartsolar controller. It wakes up every 30 minutes, collects a ve.direct block, and transmits the data all in less than 5 seconds, optimizing battery life.

Based on a rewrite of the code found in physee/Victron.Arduino-ESP8266. This code is more fault tollerant and can handle unexpected garbage/start/stop from the uart communication. It is also now in a library form.

Alternatives

Looking for a Python alternative? Check out metrafonic/asyncio-vedirect-mqtt

Example usage

We connect to the smartsolar device via Serial1 and print the values as soon as they are collected.

#include "VEDirect.h"

VEDirect vedirect(Serial1);

void setup()
{
  Serial1.begin(19200);
}

void loop(){
  while (!vedirect.Collect()){
    Serial.println("Getting victron data timed out");
  }
  float batteryVoltage = atof(vedirect.GetValue(3));
  vedirect.PrintValues();
}