My Slim 2AA Battery Node

[badmannen]

OK I had some fun the last couple of days and actually got something done =D !

Managed to update my gateway and repeater-nodes to latest version and boot-loaded all nodes and future nodes so they are FOTA enabled .

So far I managed to assemble 3 nodes and after a bit of swearing and soldering and de-soldering and re-soldering I got:
1 - DHT11 TEMP / HUM node, on Battery (Slim 2AA) - surprisingly accurate actually

2 - DOOR-SWITCH - on Battery (Slim 2AA) - to be used in my mailbox, got the idea from someone here in the forums, so thank you, I don´t remember who it was since I probably read a million posts by now =D

3 - a 220V Relay switch, with the PA LN radio, and works as repeater ( runs on a NANO )

just wanted to say a huge thanks to the MySensors group and all people here on the forum for helping me get started (Had a little break for a couple of years =)

[NeverDie]

Let us know when you get it to FOTA update.

[badmannen]

@neverdie
Just tried it by mounting an "empty" 328P in the node just with the
fuses set to:
0xE2
0xDA
0xFE

and with the MYSBootloader .

Amazing ! . worked at the first try! (this time around =D )

( tried and failed a couple of times earlier, but I know I burned 0xFD instead of 0xFE so set the BOD to the wrong value, and that does not work )

[badmannen]

@neverdie Actually... I run into another problem ..

After I make a FOTA and upload a sketch . it runs as it should, no problem.

But if I try to update it again , it never tries to upload the sketch to the node.

The only thing I could find that was clever to do to make it work ok with a battery node was to use smartSleep();
which I do ... is there anything else in the code that needs to be present ?

[NeverDie]

Hopefully someone who knows can chime in.

[badmannen]

@neverdie OK, that person who knows something is now ME ! =D ... RTFM ... as always , it worked strangely enough to update ONCE with some slightly wrong Fuses set... reloaded the bootloader with soem correct fuses agian .. ( hopefully alst time .. and VOILA! now it works to update the node multiple times .. yeaa.

[NeverDie]

What were the winning fuse settings that you finally settled on using? Trust me, a year from now you won't remember, and you'll be glad you posted it.

[badmannen]

OK MY solution was actually the fuses that I said earlier . but confused myself by changing them back and forth a couple of times and downgraded Arduino to the previous version etc.

So the fuses for my barebone 328P are:

proMYSBL8.bootloader.low_fuses=0xE2
proMYSBL8.bootloader.high_fuses=0xDA
proMYSBL8.bootloader.extended_fuses=0xFE

the biggest issue I had was probably with ARduino IDE .. that one I enver manged to set the fuses ( I read somewhere it should.. but maybe I´m wrong) . Anyway it works when I set the fuses and upload it with AVRDUDESS.

(note: hello me 1 year into the future, just do what I say ! )
=)

[badmannen]

I just add another note to myself ( And anyone else that lost their hair wondering why the bootloader was lost....)

DO NOT UPLOAD SKETCH ONLY WITH USBASP ... it deletes the bootloader .
yes I know it is mentioned on the foru m.. just found it .. but I mention it again...

[badmannen]

@badmannen

and here is a good simple explanation of the fuses
http://www.martyncurrey.com/category/atmega/

[NeverDie]

FYI: If you run the ceramic resonator at 8mhz, with the zero wake up fuse setting, you can wake the atmega328p up in less than 4usec. This is a huge power savings compared to all other options.

[badmannen]

@neverdie aa thanks for the info. Might be useful for some other nodes I will do.

[NeverDie]

@badmannen You're welcome. I even measured it on an oscope just to be sure, so I'm certain it is true.

[badmannen]

This style?
€ 1,09 8%OFF | 20pcs Ceramic Resonators ZTT 4M 6M 8M 10M 12M 16M 4/6/8/10/12/16MHZ DIP-3 Crystal Frequency Element
https://s.click.aliexpress.com/e/mRfXWk8Nd

[NeverDie]

@badmannen no. It's built in. You already have it.

[badmannen]

@neverdie aa ok sorry got confused there for a second. I'm running the internal, so I guess I will pop them off again now then and burn that fuse for a quicker startup 👍🏻

[NeverDie]

@badmannen yes, it must be the internal resonator.

[Grzegorz B]

Hello, will there be a good soul that will help improve the program? I know what the error is but I have no idea how to correct it.

  interruptReturn = sleep(PRIMARY_BUTTON_PIN-2, CHANGE, SECONDARY_BUTTON_PIN-2, CHANGE, ONE_DAY_SLEEP_TIME);

when i change

PRIMARY_BUTTON_PIN

the interruptReturn = 1, but when i change

SECONDARY_BUTTON_PIN

the interruptReturn = 0.
My question is how can i chane it to send 1 and 1 by both contactrons.

Full code:

//#define MY_DEBUG
#define MY_RADIO_NRF24
#define MY_NODE_ID 100
#define MY_PARENT_NODE_ID 0
#define MY_PARENT_NODE_IS_STATIC

#include <MySensors.h>
#include "Vcc.h"

#define SKETCH_NAME "WindowSlimSensor2pcs_smallR"

#define PRIMARY_CHILD_ID 1
#define PRIMARY_BUTTON_PIN 2
#define SECONDARY_CHILD_ID 2
#define SECONDARY_BUTTON_PIN 3
#define BATTERY_REPORT_DAY 2   // Desired heartbeat interval when inactive. Maximum heartbeat/report interval is equal to this due to the dayCounter.
#define BATTERY_REPORT_BY_IRT_CYCLE 10  // Adjust this according to usage frequency.
#define ONE_DAY_SLEEP_TIME 86400000

//#define BATTERY 3

MyMessage msg(PRIMARY_CHILD_ID, V_TRIPPED);
MyMessage msg2(SECONDARY_CHILD_ID, V_TRIPPED);
//MyMessage msg3(BATTERY, V_CUSTOM);

int dayCounter = 0;
int irtCounter = 0;
bool interruptReturn=false;
const float VccMin   = 1.7;           // Minimum expected Vcc level, in Volts.
const float VccMax   = 3.3;           // Maximum expected Vcc level, in Volts.
const float VccCorrection = 3.43 / 3.455;  // Measured Vcc by multimeter divided by reported Vcc


const int32_t report_interval = 8640000; // 1day -> h * m * s * ms NOTICE: milliseconds, not microseconds!

Vcc vcc(VccCorrection);
//Vcc vcc;
#ifdef MY_DEBUG
void before(){
    Serial.begin(9600);
}
#endif

void setup()
{
    pinMode(PRIMARY_BUTTON_PIN, INPUT);
    pinMode(SECONDARY_BUTTON_PIN, INPUT);
      //EXTERNAL pull-ups
    digitalWrite(PRIMARY_BUTTON_PIN, LOW);
    digitalWrite(SECONDARY_BUTTON_PIN, LOW);  
}

void presentation()
{
    sendSketchInfo(SKETCH_NAME, __DATE__);
    present(PRIMARY_CHILD_ID, S_DOOR, "Lewe Okno");
    present(SECONDARY_CHILD_ID, S_DOOR, "Prawe Okno");
  //  present(BATTERY, S_CUSTOM);
}

void loop()

{
    uint8_t reedState;
    uint8_t reedState2;
    static uint8_t lastReedState = 2;
    static uint8_t lastReedState2 = 2;
    sleep(5); // Short delay to allow buttons to properly settle
    reedState = digitalRead(PRIMARY_BUTTON_PIN);
    sleep(5); // Short delay to allow buttons to properly settle
    reedState2 = digitalRead(SECONDARY_BUTTON_PIN);

  if (!interruptReturn) { // Woke up by timer (or first run)
    dayCounter++; 
    if (dayCounter >= BATTERY_REPORT_DAY) {
          dayCounter = 0;
          sendBatteryReport();
    }
  }
  else {    // Woke up by pin change
            irtCounter++;
        sleep(5); 
  
      // Woke up by pin change
      if (reedState != lastReedState) {
        send(msg.set(reedState==HIGH ? 1 : 0));
        lastReedState = reedState;
    }
      if (reedState2 != lastReedState2) {
        send(msg2.set(reedState2==HIGH ? 1 : 0));
        lastReedState2 = reedState2;
    }
      if (irtCounter>=BATTERY_REPORT_BY_IRT_CYCLE) {
        irtCounter=0;
        sendBatteryReport();
      }
    
  }

  // Sleep until something happens with the sensor,   or one sleep_time has passed since last awake.
  interruptReturn = sleep(PRIMARY_BUTTON_PIN-2, CHANGE, SECONDARY_BUTTON_PIN-2, CHANGE, ONE_DAY_SLEEP_TIME);
  
} 

void sendBatteryReport() {
          uint8_t batteryPercent = (uint8_t)vcc.Read_Perc(VccMin, VccMax);
          sendBatteryLevel(batteryPercent);
}

[mfalkvidd]

Welcome to the forum @Grzegorz-B

Change

bool interruptReturn=false;

to

uint8_t interruptReturn= INTERRUPT_NOT_DEFINED;

and

if (!interruptReturn) { // Woke up by timer (or first run)

to

if (interruptReturn== MY_WAKE_UP_BY_TIMER) { // Woke up by timer (or first run)

Documentation for the sleep function is available at https://www.mysensors.org/download/sensor_api_20#sleeping

[Grzegorz B]

@mfalkvidd Thanks! now its works like a charm :D