Your browser does not seem to support JavaScript. As a result, your viewing experience will be diminished, and you may not be able to execute some actions.

Please download a browser that supports JavaScript, or enable it if it's disabled (i.e. NoScript).

How exactly ACK mechanism works like?

catcher 19 Jun 2016, 08:51 last edited by
How exactly ACK mechanism works like?
1. I'm using Serial GW, should I implement ACK confirmation in my controler or Serial GW handle this?
2. If I'm sending message from NODE1 to NODE2 through Serial GW (NODE1->SerGW->NODE2) should ACK be sent from GW to NODE1 too or NODE2 should be responsible for sending ACK to NODE1 when received?
  Generally ACK is handled in low level implementation or should I carry about it in my code?
  Thanks in advace.
  Regards
Reply Quote 1
1 Reply Last reply
Loading More Posts
3
Posts

1.0k
Views
Reply

Reply as topic
Log in to reply
hek Admin 19 Jun 2016, 09:43 last edited by
1. Acks is handled by the library. Need to do anything on the controller side.
2. You don't need to do anything on gw-side. The only thing you have to do is to pick up and/or potentially act on the ack message in your incomingMessage-function.
Reply Quote 0
1 Reply Last reply
catcher 19 Jun 2016, 11:48 last edited by

Great, thanks for answers.
Reply Quote 0
1 Reply Last reply

3
Posts

1.0k
Views

Log in to reply

1 out of 3

Suggested Topics

Update RF24 library to latest version
Bug Reports • 23 Mar 2014, 23:37 • andriej 24 Mar 2014, 22:52

4

0
Votes

4
Posts

2.6k
Views

24 Mar 2014, 22:52

@andriej Hi, I had problem using the main branch mysensors/Raspberry, that because of the bit-field struct (header_s) in Sensor.h They will get packed in different order on the arduino compared to the RPi (at least with my compiler, gcc). In order to fix this I created the 1.4dev branch. It uses full bytes instead of the bit-fields, but you need (of cause) to compile both the sensors (arduino) and the gateway (RPi) using the 1.4dev branch. We need to fix this in the main branch later on (and use the same files as in mysensors/Arduino/libraries/MySensors)
No merge into master in the last 5 years, should we use development?
General Discussion • 23 Sept 2024, 17:48 • kiesel 25 Mar 2025, 15:30

10

0
Votes

10
Posts

48
Views

25 Mar 2025, 15:30

Well, my network with two handfulls of nodes in three different locations is still live and kicking! I agree that there does not seem to be a lot happening in the community. I'm running 2.4.0- alpha since this gives support for MQTT over TLS. Just managed today to create one more MQTT GW after reading a lot about support for ESP8266. You know, these things you do once per year and have to learn new each time. MySensors is the cheapest way I have found to create small sensor nodes etc. But now slowly running out of my supply of hardware. Well, time will tell...
Which device I have to use to connect with accelerometer before connecting to my pc?
General Discussion • 24 Jan 2023, 17:16 • Yada Kijsathan 16 Mar 2025, 20:17

5

1
Votes

5
Posts

37
Views

16 Mar 2025, 20:17

When connecting an accelerometer to your PC, consider its communication protocol (I2C or SPI) and the appropriate interface device, like a microcontroller (e.g., Arduino). You may also need additional hardware for voltage adjustment or signal conditioning, depending on the sensor’s specifications.
Why is the output of ACS712 current measurement module unchanged?
General Discussion • mysensors • 19 Jul 2021, 09:09 • Tessie T 27 days ago

4

0
Votes

4
Posts

38
Views

27 days ago

@ZenBlizzard in case you are measuring the output with a multimeter, you will get an averaged level, since AC current waveform should be sinusoidal and overlapped with the Vcc/2->2.56V in your case. To measure the current you need a decently high sampling and some math. #define SENSITIVITY 66 // mV/A const float readings = 5; const float alpha = 2.0 / (2 * readings + 1); for (ifor = 0; ifor < 250; ifor++) { // Voltage voltageSampleRead = analogRead(V) * vccRead / 1023 - vccRead / 2; /* read the sample value including offset value*/ voltageSampleSum = voltageSampleSum + sq(voltageSampleRead); /* accumulate total analog values for each sample readings*/ voltageSampleOffsetSum = voltageSampleOffsetSum + voltageSampleRead; // Current currentSampleRead = analogRead(I) * vccRead / 1023 - vccRead / 2; /* read the sample value including offset value*/ currentSampleSum = currentSampleSum + currentSampleRead * currentSampleRead; /* accumulate total analog values for each sample readings*/ currentSampleOffsetSum = currentSampleOffsetSum + currentSampleRead; wait(1); } voltageMean = voltageSampleSum / ifor; /* calculate average value of all sample readings taken*/ voltageOffset = voltageSampleOffsetSum / ifor; reading = (sqrt(voltageMean) - voltageOffset) * 230.0 / 1.0; // read voltage / reported voltage. voltage = round_to_dp(alpha * reading + (1 - alpha) * voltage,1); Serial.println(voltage); if (voltage < 25) voltage = 0; currentMean = currentSampleSum / ifor; /* calculate average value of all sample readings taken*/ currentOffset = currentSampleOffsetSum / ifor; reading = (sqrt(currentMean) - currentOffset) / SENSITIVITY * 1000 - currentZeroOffset; // subtract no load current. if (reading < 0) reading = 0; current = round_to_dp( alpha * reading + (1 - alpha) * current,2);
Meet in Malmö, Summer 2016?
General Discussion • 1 Feb 2016, 15:34 • bjacobse 4 Mar 2025, 00:29

95

2
Votes

95
Posts

149.4k
Views

4 Mar 2025, 00:29

Maybe next summer the 10 years after party? I would still like to meet all of you guys in real person
Email notifications received twice
General Discussion • 6 Feb 2023, 16:15 • Jodaille 29 days ago

3

1
Votes

3
Posts

37
Views

29 days ago

It looks like duplicate email notifications may be linked to system settings or preferences. Have you noticed if the issue happens after specific actions or changes? Investigating your notification settings might shed some light

0
Online

11.5k
Users

11.1k
Topics

112.8k
Posts

Copyright 2019 TBD | Forum Guidelines | Privacy Policy | Terms of Service

1 / 1