TX Power increase after every transmission

[Steven987]

Hello,
My current Test Setup is:
Arduino with RFM69HW and for now an SHT31 and BMP280
Raspberry as MQTT Gateway and an Mosquitto Broker

i want to add rain, wind later but for now im testing the basics.

When i start the Arduino the TX Power is at 8 and increasing every transmission by one till 20 i noticed that by measuring power draw.
Here my basic sketch:

// Enable debug prints to serial monitor
#define MY_DEBUG 

#define MY_RADIO_RFM69
#define MY_RFM69_NEW_DRIVER
#define MY_IS_RFM69HW

#define MY_NODE_ID 1

#include <MySensors.h> 
#include <Arduino.h>
#include <Wire.h>
#include <Adafruit_SHT31.h>
#include <Adafruit_BMP280.h>

Adafruit_SHT31 sht31 = Adafruit_SHT31();
Adafruit_BMP280 bmp;

unsigned long SLEEP_TIME = 10000;

float altitude = 713.0;

#define TEMP_CHILD_ID 0
#define HUM_CHILD_ID 1
#define BARO_CHILD_ID 2

MyMessage temperatureMsg(TEMP_CHILD_ID, V_TEMP);
MyMessage humidityMsg(HUM_CHILD_ID, V_HUM);
MyMessage pressureMsg(BARO_CHILD_ID, V_PRESSURE);

void setup() {
  if (!sht31.begin(0x44)) {   // Set to 0x45 for alternate i2c addr
    Serial.println("Couldn't find SHT31");
    while (1) delay(1);
  }
  if (!bmp.begin(0x76)) {
    Serial.println(F("Could not find a valid BMP280 sensor, check wiring!"));
    while (1);
  }
  bmp.setSampling(Adafruit_BMP280::MODE_FORCED,     /* Operating Mode. */
                  Adafruit_BMP280::SAMPLING_X2,     /* Temp. oversampling */
                  Adafruit_BMP280::SAMPLING_X16,    /* Pressure oversampling */
                  Adafruit_BMP280::FILTER_X16,
                  Adafruit_BMP280::STANDBY_MS_500);
}

void presentation() {
  // Send the sketch version information to the gateway and Controller
  sendSketchInfo("SHT+BMP", "1.0");
  present(TEMP_CHILD_ID, S_TEMP);
  present(HUM_CHILD_ID, S_HUM);
  present(BARO_CHILD_ID, S_BARO);
}

void loop() {  
  float t = sht31.readTemperature();
  float h = sht31.readHumidity();
  float p = bmp.readPressure();
  float pSL = (((p)/pow((1-((float)(altitude))/44330), 5.255))/100.0);
  send(temperatureMsg.set(t, 2));
  send(pressureMsg.set(pSL, 2));
  send(humidityMsg.set(h, 2));
  int txPower = RFM69_getTxPowerLevel();
  Serial.println(txPower);
  sleep(SLEEP_TIME);
}

Any ideas?
Thanks

[mfalkvidd]

Welcome to the forum @steven987

The debug output (from the node and the gateway) will be the quickest and easiest way to find out. Post them here and we'll help you interpret them.

[Steven987]

Debug from the Node the number inbetween is from RFM69_getTxPowerLevel();
https://pastebin.com/ndqnrVqb

And here from Gateway
https://pastebin.com/kLS7EiKy

[mfalkvidd]

@steven987 interesting. It looks like communication is working well all the time (no st=FAIL), but power is increased all the time.

Could you add

#define 	MY_DEBUG_VERBOSE_RFM69

at the top of the node sketch? It will give more detailed information on the rfm radio.

[Steven987]

Here with verbose
https://pastebin.com/x8aaC429

Looks like ATC is enabled but i heavent defined it anywhere?
ATC on raspberry Gateway isnt working if i have read this correct
https://forum.mysensors.org/topic/9796/rfm69-atc-not-working

[mfalkvidd]

@steven987 yes atc is on by default. It can be disabled by defining MY_RFM69_ATC_MODE_DISABLED