Frameworks > Bluetooth Framework

GATT Client - How Can I Improve Transmission Rate?

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briandunham:
I am trying to use the CwclGattClient::SetConnectionParams(const wclBluetoothLeConnectionParametersType Params) function to achieve higher throughput, and I get the returned error: 0X0005105F (WCL_E_BLUETOOTH_LE_FEATURE_NOT_SUPPORTED). I'm wondering if this is just a limitation of Windows 10? Or is this really just my BLE driver not supporting this capability? Does this just set the connection interval to be lower?

Are there other options for improving the transmission rate? My program currently does consecutive CwclGattClient::WriteCharacteristicValue(...) calls when sending large amounts of data and the time it takes to return from the WriteCharacteristicValue call seems to be very slow.

briandunham:
I should also mention that I am currently subscribing for notifications from the GATT client, which is mandatory for our design.

Mike Petrichenko:
Hello,

Connection parameters can be changed only on Windows 11 with MS drivers.

About writing characterisitc vakue: There are 2 ways to write long vakues for nowL

1. Split data to smallamounts.
2. Run Write operationin separate thread.

briandunham:
I am already currently splitting the data into smaller chunks and have a dedicated write thread. Would changing my application to be the GATT server improve the write speed?

briandunham:
And could my application be running both the GATT server and the GATT client simultaneously?

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