Battery status in scetch?



  • I want to have the oportunity to see battery status in my controller for my BinarySwitchSleepSensor.

    Therefore I wounder if someone could help me to take does needed parts from this one:

    /**
     * The MySensors Arduino library handles the wireless radio link and protocol
     * between your home built sensors/actuators and HA controller of choice.
     * The sensors forms a self healing radio network with optional repeaters. Each
     * repeater and gateway builds a routing tables in EEPROM which keeps track of the
     * network topology allowing messages to be routed to nodes.
     *
     * Created by Henrik Ekblad <henrik.ekblad@mysensors.org>
     * Copyright (C) 2013-2015 Sensnology AB
     * Full contributor list: https://github.com/mysensors/Arduino/graphs/contributors
     *
     * Documentation: http://www.mysensors.org
     * Support Forum: http://forum.mysensors.org
     *
     * This program is free software; you can redistribute it and/or
     * modify it under the terms of the GNU General Public License
     * version 2 as published by the Free Software Foundation.
     *
     *******************************
     *
     * DESCRIPTION
     *
     * This is an example that demonstrates how to report the battery level for a sensor
     * Instructions for measuring battery capacity on A0 are available here:
     * http://www.mysensors.org/build/battery
     * 
     */
    
    
    
    // Enable debug prints to serial monitor
    #define MY_DEBUG 
    
    // Enable and select radio type attached
    #define MY_RADIO_NRF24
    //#define MY_RADIO_RFM69
    
    #include <SPI.h>
    #include <MySensors.h>
    
    int BATTERY_SENSE_PIN = A0;  // select the input pin for the battery sense point
    
    unsigned long SLEEP_TIME = 900000;  // sleep time between reads (seconds * 1000 milliseconds)
    int oldBatteryPcnt = 0;
    
    void setup()  
    {
       // use the 1.1 V internal reference
    #if defined(__AVR_ATmega2560__)
       analogReference(INTERNAL1V1);
    #else
       analogReference(INTERNAL);
    #endif
    }
    
    void presentation() {
       // Send the sketch version information to the gateway and Controller
       sendSketchInfo("Battery Meter", "1.0");
    }
    
    void loop()
    {
       // get the battery Voltage
       int sensorValue = analogRead(BATTERY_SENSE_PIN);
       #ifdef MY_DEBUG
       Serial.println(sensorValue);
       #endif
       
       // 1M, 470K divider across battery and using internal ADC ref of 1.1V
       // Sense point is bypassed with 0.1 uF cap to reduce noise at that point
       // ((1e6+470e3)/470e3)*1.1 = Vmax = 3.44 Volts
       // 3.44/1023 = Volts per bit = 0.003363075
       
       int batteryPcnt = sensorValue / 10;
    
       #ifdef MY_DEBUG
       float batteryV  = sensorValue * 0.003363075;
       Serial.print("Battery Voltage: ");
       Serial.print(batteryV);
       Serial.println(" V");
    
       Serial.print("Battery percent: ");
       Serial.print(batteryPcnt);
       Serial.println(" %");
       #endif
    
       if (oldBatteryPcnt != batteryPcnt) {
         // Power up radio after sleep
         sendBatteryLevel(batteryPcnt);
         oldBatteryPcnt = batteryPcnt;
       }
       sleep(SLEEP_TIME);
    }
    

    To this one...

    /**
     * The MySensors Arduino library handles the wireless radio link and protocol
     * between your home built sensors/actuators and HA controller of choice.
     * The sensors forms a self healing radio network with optional repeaters. Each
     * repeater and gateway builds a routing tables in EEPROM which keeps track of the
     * network topology allowing messages to be routed to nodes.
     *
     * Created by Henrik Ekblad <henrik.ekblad@mysensors.org>
     * Copyright (C) 2013-2015 Sensnology AB
     * Full contributor list: https://github.com/mysensors/Arduino/graphs/contributors
     *
     * Documentation: http://www.mysensors.org
     * Support Forum: http://forum.mysensors.org
     *
     * This program is free software; you can redistribute it and/or
     * modify it under the terms of the GNU General Public License
     * version 2 as published by the Free Software Foundation.
     *
     *******************************
     *
     * DESCRIPTION
     *
     * Interrupt driven binary switch example with dual interrupts
     * Author: Patrick 'Anticimex' Fallberg
     * Connect one button or door/window reed switch between 
     * digitial I/O pin 3 (BUTTON_PIN below) and GND and the other
     * one in similar fashion on digital I/O pin 2.
     * This example is designed to fit Arduino Nano/Pro Mini
     * 
     */
    
    
    // Enable debug prints to serial monitor
    #define MY_DEBUG 
    
    // Enable and select radio type attached
    #define MY_RADIO_NRF24
    //#define MY_RADIO_RFM69
    
    #include <SPI.h>
    #include <MySensors.h>
    
    #define SKETCH_NAME "Binary Sensor"
    #define SKETCH_MAJOR_VER "1"
    #define SKETCH_MINOR_VER "0"
    
    #define PRIMARY_CHILD_ID 3
    #define SECONDARY_CHILD_ID 4
    
    #define PRIMARY_BUTTON_PIN 2   // Arduino Digital I/O pin for button/reed switch
    #define SECONDARY_BUTTON_PIN 3 // Arduino Digital I/O pin for button/reed switch
    
    #if (PRIMARY_BUTTON_PIN < 2 || PRIMARY_BUTTON_PIN > 3)
    #error PRIMARY_BUTTON_PIN must be either 2 or 3 for interrupts to work
    #endif
    #if (SECONDARY_BUTTON_PIN < 2 || SECONDARY_BUTTON_PIN > 3)
    #error SECONDARY_BUTTON_PIN must be either 2 or 3 for interrupts to work
    #endif
    #if (PRIMARY_BUTTON_PIN == SECONDARY_BUTTON_PIN)
    #error PRIMARY_BUTTON_PIN and BUTTON_PIN2 cannot be the same
    #endif
    #if (PRIMARY_CHILD_ID == SECONDARY_CHILD_ID)
    #error PRIMARY_CHILD_ID and SECONDARY_CHILD_ID cannot be the same
    #endif
     
    
    // Change to V_LIGHT if you use S_LIGHT in presentation below
    MyMessage msg(PRIMARY_CHILD_ID, V_TRIPPED);
    MyMessage msg2(SECONDARY_CHILD_ID, V_TRIPPED);
    
    void setup()  
    {  
      // Setup the buttons
      pinMode(PRIMARY_BUTTON_PIN, INPUT);
      pinMode(SECONDARY_BUTTON_PIN, INPUT);
    
      // Activate internal pull-ups
      digitalWrite(PRIMARY_BUTTON_PIN, HIGH);
      digitalWrite(SECONDARY_BUTTON_PIN, HIGH);
    }
    
    void presentation() {
      // Send the sketch version information to the gateway and Controller
      sendSketchInfo(SKETCH_NAME, SKETCH_MAJOR_VER "." SKETCH_MINOR_VER);
    
      // Register binary input sensor to sensor_node (they will be created as child devices)
      // You can use S_DOOR, S_MOTION or S_LIGHT here depending on your usage. 
      // If S_LIGHT is used, remember to update variable type you send in. See "msg" above.
      present(PRIMARY_CHILD_ID, S_DOOR);  
      present(SECONDARY_CHILD_ID, S_DOOR);  
    }
    
    // Loop will iterate on changes on the BUTTON_PINs
    void loop() 
    {
      uint8_t value;
      static uint8_t sentValue=2;
      static uint8_t sentValue2=2;
    
      // Short delay to allow buttons to properly settle
      sleep(5);
      
      value = digitalRead(PRIMARY_BUTTON_PIN);
      
      if (value != sentValue) {
         // Value has changed from last transmission, send the updated value
         send(msg.set(value==HIGH ? 1 : 0));
         sentValue = value;
      }
    
      value = digitalRead(SECONDARY_BUTTON_PIN);
      
      if (value != sentValue2) {
         // Value has changed from last transmission, send the updated value
         send(msg2.set(value==HIGH ? 1 : 0));
         sentValue2 = value;
      }
    
      // Sleep until something happens with the sensor
      sleep(PRIMARY_BUTTON_PIN-2, CHANGE, SECONDARY_BUTTON_PIN-2, CHANGE, 0);
    } 
    

    Regards

    Mikael



  • I think I have fixed this by my own without any coding knowledge. LOL

    But one thing I don`t understand.

    Why is the battery status symbol showed on the node and not the sensor?


  • Hardware Contributor

    Hello.

    Great to hear you've figured it by yourself, try&retries is good for learning 😉 So i assume you've copy/pasted the batt code to your node.

    That said, regarding your 2nd question, I'm not sure to understand..
    But using sendBatteryVoltage is an internal Mysensors function which send the battery voltage with a special internal message I_BATTERY_LEVEL . Its purpose is especially that controllers can easily recognize which message is for battery level. Imho, in a controller i prefer to have the battery level at node level.

    It's still possible to create a dedicated CHILD _ID_BATTERY_LEVEL or CHILD _ID_BATTERY_VOLTAGE if you want the battery voltage for instance. and populate the corresponding code in your sketch. Then you can do what you want with the value in your controller etc..but the controller itself won't be able to know this is a battery level value. Up to you then to tell him.


  • Admin

    @miro said:

    Why is the battery status symbol showed on the node and not the sensor?

    Because there is a single power source for a given node even though a node can host multiple sensors. Many home automation controllers expect and present the battery status for a given node because it is a property of the node and not the sensors. Does this make sense?



  • Hmm, not really.

    On my fibaro sensors I have battery status on the sensors. Why is it like that?

    Don`t they have nodes?


  • Admin

    @miro Hmmm, don't know - it is a Fibraro choice or controller ui choice, and I suspect the later. For example, on the Vera home controller, the Fibraro LED dimmers report power consumption on the parent node, not the RGBW children.


  • Hardware Contributor

    @miro
    i think you're confusing a node id VS a child node id, a device VS a sensor data. typo mistake.
    for a device you can have only one id. but you can have multiple sensors so multiple child ids in a device.
    Battery could be one of these sensors.
    You can't have the battery voltage for a temperature sensor or humidity sensor. that does not mean anything. you're not sensing battery level with the temperature ic/sensor... whereas a battery level for a device makes sense.

    For more infos i would advise to read the great docs https://www.mysensors.org/download/sensor_api_20 etc.


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