NodeManager on STM32F103C8 - RS485 Gateway + INA219 + OLED

[adampr1]

Hi all,
two monts ago I've created simple RS485 gateway (with NodeManager) based on STM32F103C8. It's working very stable (ok right now I'm using only two nodes :) - for test reason) and now I've created 2-nd version with INA219 and OLED SH1106.

The reason is that I'd like to make something like PoE (my RS485 are connected over CAT7 cable with 2 pairs as power line 12V for nodes) and my RS485-gateway should send to Domoticz status of voltage, summary current and power consumption of my 485-nodes. Because I'd like to use display in vertical (2xDIN case) need to use U8g2lib.h library. It's working ok with constant text but how I can read out vales of NodeManager variable eg.

float voltage = ((ina219*)nodeManager.getSensor(0))->getValueFloat();

General my question is how can I, in main loop, get value from NodeManager sensors?
Part of my code - compile error (because of variable)

  // call NodeManager before routine
  nodeManager.before();

  u8g2.begin();

   u8g2.firstPage();
   do {
     u8g2.setFont(u8g2_font_helvR10_tf);
     u8g2.drawStr(3,15,"Voltage");
     u8g2.drawStr(3,45,"Current");
     u8g2.drawStr(3,75,"Power");
   } while ( u8g2.nextPage() );
  
  delay(5000);

  u8g2.clear();
 
   u8g2.firstPage();
    do {
     u8g2.drawStr(1, 32, "START");
   } while ( u8g2.nextPage() );

}

// loop
void loop() {
//  digitalWrite(MY_DEFAULT_ERR_LED_PIN, state);

while (transportCheckUplink() == false){

  u8g2.firstPage();
  do {
    u8g2.setFont(u8g2_font_helvR14_tf); // 14 px height
    u8g2.drawStr(3, 32, "Disconnected!");
    } while ( u8g2.nextPage() );
 }
  
  // call NodeManager loop routine
  nodeManager.loop();
  
  int sensorIna219_Id = nodeManager.registerSensor(ina219);
  float voltage = ((ina219*)nodeManager.getSensor(0))->getValueFloat();
  float current = ((ina219*)nodeManager.getSensor(1))->getValueFloat();
  float power = ((ina219*)nodeManager.getSensor(2))->getValueFloat();  
  
  u8g2.firstPage();
  do {
     u8g2.setFont(u8g2_font_helvR10_tf);
     u8g2.drawStr(3,15,"Voltage");
     u8g2.drawStr(3,45,"Current");
     u8g2.drawStr(3,75,"Power");  
   
  u8g2.setFont(u8g2_font_fub30_tn);
  u8g2.setCursor(3, 35);
  u8g2.print(voltage);
  u8g2.setCursor(3, 70);
  u8g2.print(current);
  u8g2.setCursor(3, 100);
  u8g2.print(power)
 } while ( u8g2.nextPage() );
  
}

I know it's little be chaotic - hope not problem to understand :)

B.R.
Adam

P.S.
my ArduinoIDE 1.8.9, MySensors 2.3.1 and NodeManager 1.9 dev

[user2684]

@adampr1 sorry for reading this thread only now with so much delay :-/ Nice project btw! Which compilation error are you receiving from Nodemanager? I also wonder if you can leverage Nodemanager's hooks capabilities to interact with it in a more clean way. Thanks!