Support mppt devices

README.md

@@ -1,29 +1,32 @@
-# VictronVEDirectArduino
+# Victron VE.Direct Arduino library
 Light-weight Arduino library to read basic data using the VE.Direct protocol from Victron Energy
 
 Built as part of a larger project, now making it available separately in case others find it useful.
 
 Setup:
- - An Arduino(ish) board 
- - A Victron Energy device that sends serial data using the text version of the VE.Direct protocol
+ - An Arduino(ish) board, works on Particle devices like Particle Photon and Particle Argon
+ - A Victron Energy device that sends serial data using the text version of the VE.Direct protocol (little different values for different devices)
  - A 5v to 3.3v serial converter (BMV is 3.3v - don't plug it directly into an Arduino!)
+ - Good to know is hat BMW-712 takes 3.3v in the VE.Direct port but the SmartSolar MPPT 75/15 need 5v to communicate on the VE.Direct port
  - Plugged into the Arduino on a serial port (eg Serial1, Serial2 etc)
  - See also: https://www.victronenergy.com/live/vedirect_protocol:faq
- - Developed and tested with a BMV-700 battery monitor
  - Distributed under an MIT license - see LICENCE.txt
-
+ - Developed and tested with: MPPT 75/15, MPPT 100/30, BMW-712
+
 Provides:
- - Access to basic energy readings - Volts, Power, Current, State of Charge (SOC)
+ - Access to the full protocol of VE.Direct variables like Power, Voltages, Panel Voltage and Panel Power depending on device.
  - A diagnostic "full dump" of everything coming from the device  
 
-### Usage:
+Code examples exists in the examples directory and the library you find in the src directory.
+
+### Example of basic usage:
     #include "VEDirect.h"
 
-    VEDirect my_bmv(Serial3);
+    VEDirect my_bmv(Serial1);
 
     if my_bmv.begin() {
-        my_int32 = my_bmv.read(VE_SOC);
+        int32_t my_int32 = my_bmv.read(VE_SOC);
     }
 
-    // VE_SOC, VE_VOLTAGE, VE_CURRENT, VE_POWER
+	// Data you can get: VE_FW, VE_VOLTAGE, VE_CURRENT, VE_VOLTAGE_PV, VE_POWER_PV, VE_STATE, VE_MPPT, VE_ERROR, VE_LOAD, VE_YIELD_TOTAL, VE_YIELD_TODAY, VE_POWER_MAX_TODAY, VE_YIELD_YESTERDAY, VE_POWER_MAX_YESTERDAY, VE_DAY_SEQUENCE_NUMBER, VE_LAST_LABEL, VE_SOC, VE_POWER, VE_ALARM