Solar Traver and Hikvision camera

[fpg99]

HI, i try to display data from epever to the Camera (hikvision).
What i can't be able is to pickup the value like BATTERY_VOLTAGE, i have a function in the loop section that every 5 minutes send to the camera some value but for BATTERY_VOLTAGE it is always 6.

In the V2 was simple, i used "bvoltage = node.getResponseBuffer(0x04) / 100.0f;"

somebody can tell me where pickup the value read from epever?
thanks
fulvio

[Bettapro]

Hi Fulvio, are you using this software or are you implementing yours? (if so, it's OT)

I would say, you are reading the wrong register, you should take a look to this specs and double check the address of each register: https://github.com/Bettapro/Solar-Tracer-Blynk-V3/blob/v3.x.x/docs/1733_modbus_protocol.pdf

[fpg99]

hi, no i'm using this software, i just add the part that write some variables on the hikvision camera, like:
battery overall current, battery voltage, pv voltage, battery temp and i add bmp280 sensor for temperature.
for the bmp280 it is ok but i'm not able to find the value read from the epever. i'm using variables like BATTERY_VOLTAGE but the value it is not correct.

the question is which are the variable that i can use in the loop section to have battery and pv voltage, battery temp and overall battery current

[Bettapro]

I don't know what "hikvision camera" actually is.

Variables are not fetched all at once, because SCC doesn't accept/like lots of requests in short periods of time.

You must implement your own syncronization driver to communicate with "hikvision camera", you have to extend BaseSync class, as done for BlynkSync, MqttHASync and MqttSync.
Then, you edit SolarTracerBlynk.ino, and integrate your implementation (take the directive USE_BLYNK as reference to identify the points to adjust in the file).

[fpg99]

hikvision is a ip camera and i send to it xlm code with all info that i want to see in overlay when camera broadcast
example: https://forum.arduino.cc/t/hikvision-ip-camera-interfacing/362268, for sync i have no problem i have already done (every 15 minuts), and already integrate in SolarTracerBlynk.ino, the problem is where are the value that you read from the epever device.

in your code, i use Battery_voltage in the LOOP section but has always same value "6"
thanks

[Bettapro]

Data are read periodically, you can find the "modbus address" of each register in the pdf file I already share to you.

You shouldn't care about this details, if you implement the driver as I suggested in my previous reply. You will get updates when there's an actual change in SCC state.

Value 6 shouldn't be a valid value, are other data ok (PV voltage, battery current...)? Do you have any error on the log? Which SCC are you using? Are you able to verify those values by connecting a PC directly to the SCC?
Please share the serial log, should be a good starting point.

[fpg99]

sorry, i forgot to tell that all value are ok, because i have implemented blynk and on mobile i can see that all value are ok, 6 is not a correct value. i loop section i have:
if (currentMillis - startMillis >= period) {
//ConnectCamera2(); // messaggio 2 bm280
ConnectCamera3(); // messaggio 3
startMillis = currentMillis;
Serial.println();
Serial.println("Scritti dati su telecamera");
}

in ConnectCamera3() function, i compose the message to send to the camera :
String WMessage3 = " PV:" + String(PV_VOLTAGE) + "V " + "Bat:" + String(BATTERY_VOLTAGE) + "V " + String(BATTERY_TEMP) +"°";

but the values are wrong

[fpg99]

in loop section all the value are not correct, but on the mobile are ok. the code are super optimize so i'm not so good to see when and where the BATTERY_VOLTAGE has the right value.

for this topic im using the version 2, but the version 3 is very good

[Bettapro]

You should not implement this in the loop section.
You have to create your own "driver", take the mqtt one as reference:
https://github.com/Bettapro/Solar-Tracer-Blynk-V3/blob/v3.x.x/SolarTracerBlynk/src/feature/MqttSync.h
https://github.com/Bettapro/Solar-Tracer-Blynk-V3/blob/v3.x.x/SolarTracerBlynk/src/feature/MqttSync.cpp

There you have the access to the SCC variables and you're able to identify if each variable has been read from the SCC (or not).

Solar-Tracer-Blynk-V3/SolarTracerBlynk/src/feature/MqttSync.cpp

Line 34 in 4e4d51a

DynamicJsonDocument json(1024);

is the "json container" to store all the values from the scc, the idea kind of suits your needs ( you have to create a similar container, then create the XML from it).

https://github.com/Bettapro/Solar-Tracer-Blynk-V3/blob/v3.x.x/SolarTracerBlynk/SolarTracerBlynk.ino , there you should insert few line, take def USE_MQTT as reference, you should just copy and paste those lines and adjust a little.
eg:

...
#if defined USE_MQTT_HOME_ASSISTANT
  MqttHASync::getInstance().uploadStatsToMqtt();
#endif
// copy and paste the code and adjust it for your driver
#if defined USE_HIKVISIONCAMERA
  HikvisionSync::getInstance().uploadStatsToMqtt();
#endif
...