Read fails for only 1 characteristic

[Thomas]

I am using the BLE Scanner app on Android to check that my device works.

I have 2 similar problems :

on one device, I can read all characteristics except one. This has been tested with different phones. The characteristic doesn't return anything on read

STRANGE thing : this happens only on one of the prototypes I have. On other prototypes there is no problem

I saw a similar problem with write on ANOTHER device : all writes work on writeable characteristics except on one characteristic (always the same) for ONE device (android error code 133).

So : 100 prototypes

• 98 work
• 1 has 1 characteristic with READ fail, all other characteristics work
• 1 has 1 characteristic with WRITE fail, all other characteristics work

Any idea what this could mean ?

The handlers in the code are one liners,they are not the culprits

Thanks Thomas

[Thomas]

Thanks for the answer. Unfortunately after flashing again our code the problems disappeared so we can't debug this but since this happened on 2 different devices we are a bit worried