In Samsung S22 series smartphones not working.
karthick1611 opened this issue · 9 comments
Hi,
I tried implement your library, everything working fine but In Samsung S22 series smartphones (Android 13), after sometime it's disconnected.
For example, I writing some commands to my charger and I'm able to read the response as well. That's not a issue but after some seconds, writing getting failed and bluetooth getting disconnected.
But In other Android 13 devices and Samsung devices, it's working fine.
Is that any issue in Samsung S22 series?.
Hi, I am actually developing on a S22 but I am not aware of any issues. If a write fails there is probably something wrong with what you are sending. It is common for devices to disconnect after a couple of seconds if no communication is done or when an error occurs.
Please share a log
Same commands what I'm sending working perfectly in Other devices. And it's good to know, u r developing for S22. May be, u'll get to know about this issue. While sending the data to my charger, while writing the data Bluetooth disconnected and writing failed.
well, there is one problem with the S22 and that is changing the MTU. It will say that it works, but it doesnt. You can check by removing the requestMtu() call so that it stays on the default 23.
Well.. Well.. Well.. It's working now but there's a issue as well.
value byte array is longer than allowed by MTU, write will fail if peripheral does not support long writes
Getting this and not getting response fully. Only reading first 20 chars.
Any Updates?.
I can't fix S22 bugs...so you are stuck with sending 20 bytes at a time.
If your peripheral supports long writes, that may be a solution for you. But keep in mind that long writes are quite slow. So not suitable for things like firmware updates.
Your comment indicates that your device doesn't support long writes. I don't know what you are trying to do and what protocol you are using so I can't give you any other advice.
....and this doesn't seem to be an issue with this library.
I didn't mention there is issue with this library.
And Thanks for the replies bro.
As far as I tested, I believe Request MTU not working in Bluetooth Version 5.2. Is anyone faced the same issue?.
Closing this issue since it relates to S22 bug and is not a library issue