How to change MTU size for EZ-Serial BLE

[YoSe_2611001]

I am using CYBLE222014 with EZ-Serial firmware pre-programmed.

I'd like to change MTU size  up to 512bytes.

How can I achieve it? And what is the default MTU size for EZ-serial firmware?

Thank you.

[GyanC_36 · Accepted solution]

Hello,

    For 128K Modules , default MTU size is 384 byes ( and maximum size, a 128 K device with EZ serial can support) and for 256 K module default MTU size is 512 bytes ( Maximum MTU size) in Firmware V1.1.1.

There is no command to send a MTU exchange request. However, if you are using any other client device ( Like CySmart ) you can send a MTU exchange request with the MTU size you want because the EZ Serial has logic to negotiate the MTU size.

-Gyan