💬 FOTA (Wireless Programming)

[dakipro]

@gohan never saw your reply sorry.
I am assuming I need more then two interrupts as I would like to have several buttons and sensors to the node. I am building a "information" node from an old lamp that will have a pir, lcd, temp, rgb led. Also a proximity and few others like microphone from the secret knock example, air quality, buzzer.
I guess I could get away with checking on sensor/buttons state on each cycle since it is not a battery powered sensor, but I assume I will need more memory anyway for all the libs.

(I know that perhaps the raspberry is better for this task, but... would like to push arduino and myself a bit more :) )

[gohan]

Since it's not a battery node, you can use pretty much anything you want. If you want to give it a shot, there is also a 3.3v pro mini with a Mega 2560 chip that should give you plenty of room and power for all the libraries you want.

[Spanners]

Can I add a +1 for Mega2560 support in the MYSBootloader please?

I have 3 Mega based nodes (Irrigation and Pool Controllers). 2 of which are in spider infested, confined spaces in the garden. OTA would be a joy.

[dakipro]

@gohan yes, but can it FOTA? :)
Never saw pro mini with mega chips btw (or didn't know the difference), do you have any links maybe?

[gohan]

http://robotdyn.com/mega-2560-pro-mini-atmega2560-16au.html

No idea if it can FOTA, bot I don't think there is a dual optiboot for it

[RFM69]

Thanks for the info, I've got it working on boards which arn't already soldered to radios, however just cant burn a new bootrom to a board with a RF69 soldered across pins miso mosi and sck. Is this normal ?

[gohan]

I guess the radio chip is interfering with the communication

[scalz]

@rfm69 does your rfm69 CS signal have a pullup? If not, you should add one, because pin can be floating (so it's bad practice to not have pullup on CS lines) and interfering during AVRSPI reprogramming

[RFM69]

@scalz Thanks for the suggestion. By CS do you mean the DI00 on rmf69 and pin2 INT0 on mini pro ?

I get confused by these things, so need to confirm. :)

What type of value pullup would you suggest. Again I'm new to this.

Thanks

[scalz]

@RFM69
CS/SS of the SPI bus, for enabling/disabling device spi comm. it's your rfm69 NSS pin if you prefer.
I usually use 56k pullup resistor

[RFM69]

@scalz thanks will give it ago.

[Guillermo Schimmel]

Hi there. For what I'm reading, the MYSBootloader allways uses the default channel 76. Is that correct? It would be a very important addition to this howto.

[mfalkvidd]

@guillermo-schimmel not always, but by default. To change the channel, the bootloader must be recompiled. I have added a note to the howto. Could you check if the information is sufficiently clear?

[Guillermo Schimmel]

I recompiled MYSBootloader 1.3 with the RF Channel I use and it's now working. I can confirm that FOTA works great over MQTT gateway.

[Guillermo Schimmel]

@mfalkvidd Thank you as usual.

I can confirm that is indeed working by recompiling to my channel.

I have however a couple of questions.

1. When you say "by default", do that means that there is a way of modify that default? If so, how?

2. This specific node that I'm testing with, have a fixed node id (I use OpenHAB). But with the recompiled bootloader it "knows" which firmware download. Where does it gets from? Is the bootloader accessing the main sketch? Or is the node id info fixed in eeprom.

3. If the node id info is in eeprom, could we also have the channel there? It would be so great not having to compile the bootloader.

Thanks a lot, as allways.

[mfalkvidd]

@guillermo-schimmel

1. Yes. Isn't that exactly what you did when you did this: "I can confirm that is indeed working by recompiling to my channel" ?
2. I don't know. But I would also guess eeprom.
3. The bootloader needs to fit into a very small size, so I am not sure if there is room to read the channel from eeprom.

Maybe @scalz can comment on 2 and 3.

[Guillermo Schimmel]

@mfalkvidd said in 💬 FOTA (Wireless Programming):

@guillermo-schimmel

1. Yes. Isn't that exactly what you did when you did this: "I can confirm that is indeed working by recompiling to my channel" ?

Definitely yes. And it worked. I meant a non-compiling way, like set some eeprom variable.

2. I don't know. But I would also guess eeprom.
3. The bootloader needs to fit into a very small size, so I am not sure if there is room to read the channel from eeprom.

Maybe @scalz can comment on 2 and 3.

Please @scalz should you have a little room, this would be a very nice feature to have.

Thank you both guys.

Regards

[mfalkvidd]

I guess the main hurdle would be that while MySensors stores the node id in eeprom today, the nrf channel is not stored in eeprom. Since bootloader and sketch use the same eeprom, there would have to be some sort of agreement on where to store the channel.

[jimmy loyens]

Hello, I have my MySensors gateway permanently attached to my openhab server (RPI3), but i want to do FOTA uploads from my desktop. How do I do this since MYSController needs to attatch to a gateway? Can i use an other gateway, both with the same address (ID0)? Thanks

[sindrome73]

@mfalkvidd Hello.
From what I read it is possible to somehow modify the channel for OTA updates, this is also said here.
https://www.mysensors.org/about/fota

But I can not find other info on how to proceed to change the channel .....
Can you give me some other clarification or link to follow ???