MYSBootloader 1.3 pre-release & MYSController 1.0.0beta
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Great work! Hope to test this soon.
This is a mayor release towards the upcoming new 2.0 MySensors library.
Thanks again. -
To summarize recent discussions and open questions:
MySensors offers two OTA FW update solutions:
Dualoptiboot requires external flash: OTA FW updates are transmitted online, i.e. while the node is active. Once all FW packets are transmitted and CRC verified, the node reboots, dualoptiboot copies FW from external flash to MCU and hands over to the new sketch/FW.
Pro: Radio agnostic, online (while node processes sensor data)
Cons: Faulty FW (e.g. freezing sketch) cannot be recovered OTA => recovery via serial port necessary, external flash requiredMYSBootloader does not require external flash: OTA FW updates are transmitted offline, i.e. MYSBootloader communicates with the controller and receives new FW which is directly written to MCU, once FW is transmitted and CRC verified, MYSBootloader hands over to the new sketch/FW.
Pro: recovery OTA possible, also with a faulty/buggy sketch (if sketch freezes, watchdog resets and MYSBootloader takes over), no external flash required
Cons: Radio specific, i.e. different bootloader for RF24 and RFM69 radio (work in progess) necessary, offline (no sensor data processing possible) -
To summarize recent discussions and open questions:
MySensors offers two OTA FW update solutions:
Dualoptiboot requires external flash: OTA FW updates are transmitted online, i.e. while the node is active. Once all FW packets are transmitted and CRC verified, the node reboots, dualoptiboot copies FW from external flash to MCU and hands over to the new sketch/FW.
Pro: Radio agnostic, online (while node processes sensor data)
Cons: Faulty FW (e.g. freezing sketch) cannot be recovered OTA => recovery via serial port necessary, external flash requiredMYSBootloader does not require external flash: OTA FW updates are transmitted offline, i.e. MYSBootloader communicates with the controller and receives new FW which is directly written to MCU, once FW is transmitted and CRC verified, MYSBootloader hands over to the new sketch/FW.
Pro: recovery OTA possible, also with a faulty/buggy sketch (if sketch freezes, watchdog resets and MYSBootloader takes over), no external flash required
Cons: Radio specific, i.e. different bootloader for RF24 and RFM69 radio (work in progess) necessary, offline (no sensor data processing possible)@tekka Please post this important info in the main thread. This really makes things clear for me.
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Actually I thought that DualOptiboot can be recovered over the air since it copies in the external flash. Thus if a faulty FW occurred because of CRC is not verified for example, then the bootloader won't copy the faulty FW to the MCU.
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@tekka oh sorry I didn't see your post!! It seems you have done very nice improvements :) I think I have missed things...I will update the topic I started with your details.
Wow 4k bootloader with signing!
Very nice catch! I didn't thought about the faulty fw for dualoptiboot!!
So your preference goes to your little baby bootloader :) At first I choosed dualopt because I use rfm69...and because with mysbootldr if the upload fails, it would stay in bootloader and offline mode..
In other hand the faulty fw case... so to be sure I have to check carefully my sketch on breadboard before uploading!!So for the moment, I stay with dualopt for my rfm69 but will keep an eye on your rfm69 improvements ;) That said do you think dualopt will become "useless"...and I should stop to use eeprom for bootloading??? I am feeling this now..
And with 4k bootloadr, atsam becomes interesting..@ahmedadelhosni : if I understand right, faulty fw means if your code is not nice and make freeze your node, and you uploaded it, crc ok, reboot node and your bad code freeze the node..not nice usecase....
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@tekka oh sorry I didn't see your post!! It seems you have done very nice improvements :) I think I have missed things...I will update the topic I started with your details.
Wow 4k bootloader with signing!
Very nice catch! I didn't thought about the faulty fw for dualoptiboot!!
So your preference goes to your little baby bootloader :) At first I choosed dualopt because I use rfm69...and because with mysbootldr if the upload fails, it would stay in bootloader and offline mode..
In other hand the faulty fw case... so to be sure I have to check carefully my sketch on breadboard before uploading!!So for the moment, I stay with dualopt for my rfm69 but will keep an eye on your rfm69 improvements ;) That said do you think dualopt will become "useless"...and I should stop to use eeprom for bootloading??? I am feeling this now..
And with 4k bootloadr, atsam becomes interesting..@ahmedadelhosni : if I understand right, faulty fw means if your code is not nice and make freeze your node, and you uploaded it, crc ok, reboot node and your bad code freeze the node..not nice usecase....
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@tekka : oki ...so lot of chance I will move to your bootloader, so no need to add eeprom footprint each time, that will give more space on pcb, cool! just for curiosity/knowledge I will look at your new code and try this very sexy bootloader :)
can't wait to see your rfm69 progress! same size? and what your thought about atsam bootloadr in future? (4k can limit a little bit 328p..)
really interesting, it's an awesome work you have done. great thx for this share :) -
@tekka : oki ...so lot of chance I will move to your bootloader, so no need to add eeprom footprint each time, that will give more space on pcb, cool! just for curiosity/knowledge I will look at your new code and try this very sexy bootloader :)
can't wait to see your rfm69 progress! same size? and what your thought about atsam bootloadr in future? (4k can limit a little bit 328p..)
really interesting, it's an awesome work you have done. great thx for this share :)@scalz I think it's always a benefit to have additional eeprom or flash on your pcb for data storage. In terms of bootloader choice it totally depends on your case and preferences. MYSBootloader has some advantages over dualoptiboot, however, dualoptiboot offers more flexibility in an evolving system with e.g. changes of transmissions protocols. On top it is radio agnostic. In my current setup and during prototyping I prefer MYSBootloader over Dualoptiboot since many of my deployed nodes do not have additional external storage.
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@tekka yep thx, I know but for some nodes I don't always need a datastorage and had the habits to add eeprom each time mainly for ota. And eeprom footprint is pretty big to place sometimes..but yes for datastorage it's cool. for the pros and cons, I agree with you, it depends of personal needs..
Have you already tried atsam boards with mysensors? I say this because I will assemble soon few atsam boards (atsamd but L family is picopower) I have designed, I will see if I'm able to port things in bootloadr but for the moment no time, too much things already in progress..in other hand, for nonpico, I'm waiting for esp32.... -
@tekka yep thx, I know but for some nodes I don't always need a datastorage and had the habits to add eeprom each time mainly for ota. And eeprom footprint is pretty big to place sometimes..but yes for datastorage it's cool. for the pros and cons, I agree with you, it depends of personal needs..
Have you already tried atsam boards with mysensors? I say this because I will assemble soon few atsam boards (atsamd but L family is picopower) I have designed, I will see if I'm able to port things in bootloadr but for the moment no time, too much things already in progress..in other hand, for nonpico, I'm waiting for esp32.... -
wow impressively cool :laughing:
thx for your kindness, now I have homeworks to do!
see you soon :) -
Sorry but I dont really get what you mean by freezy ?
You mean a code is compiled but it enters an infinite loop for example ? -
yes that's it. a bug in your code, like infinite loop, ram troubles... that should be rare depending of your code. plus generally you/I test on breadboard before sending it in prod, but that can happen and is good to know ;)
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yes that's it. a bug in your code, like infinite loop, ram troubles... that should be rare depending of your code. plus generally you/I test on breadboard before sending it in prod, but that can happen and is good to know ;)
@scalz great.
This means that MYSBootloader can handle this problem and enter the bootloader mode even if the MCU freezes.@tekka you state that the current version can handle a freeze SW. Also if the new code is corrupted during programming by unverified CRC or whatever, it will also handle that problem and resets and wait for a new flashing order.
Is this new in this version ? I am some how sure that MYSBootloader previously had a problem handling thoses types of failures, and that's why I was going to use DualOptiboot as I read before that it can handle those failuresSorry for lots of questions but I am trying to reorganise my info.
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@rollercontainer confirmed working with W5100mqtt here!
