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CC2640R2F: CC2640R2F BLE module connected to the CC1120

IMMA Ferrini
Prodigy 10 points

Part Number: CC2640R2F
Other Parts Discussed in Thread: CC1120,

On a project which is using our CC2640R2F BLE module connected to the CC1120 my customer wants to know if it’s possible to change the Bluetooth packet length to 30 bytes in order to cover almost all cases of long messages in this project.

Currently they can receive a complete 22 bytes message using our BTool provided by TI, but the message is received in two frames with an interval of 1-2s. If they use their BLE tool named CMCS this  interval seems too long and it goes in timeout.

So the request is to have possibility to change the Bluetooth packet length to 30 bytes or even higher.

  • 0
    TI__Guru** 101540 points

    Hi,

    Thank you for reaching out.

    Once the connection between BTool and the CC2640R2F device established, you can change the MTU size using the GATT_ExchangeMTU command (you will find it in Advanced Commands > GATT). There you can select the MTU you want.

    More details regarding changing the MTU are available in the BLE Stack User's guide.

    I hope this will help,

    Best regards,