STM32WB55 BLE OTA Transfer Rate issue, and How to improve it?

[Micha Valach]

Hello,

I successfully able to download and run the BLE_OTA example (on WB55-Nucleo platform)

I had transfer the M4 FW file only, named: BLE_p2pServer_ota_reference.bin with the size of 33.6KB, The Total transfer time was: 42.02 Sec (on my Huawei p10 mobile running "ST BLE Sensor" mobile App. v4.7.1)

Meaning the Transfer Rate is less then 10Kbits/Sec

Please advise why the Transfer Rate is so slow? and what need to do in order to make it faster?

Thanks In Advance,

Micha

[Remi QUINTIN]

Most of the mobiles have a fixed and limiting connection interval as Bluetooth parameters. so it is difficult to show the real OTA performances with a mobile.

I did the same experiment with my mobile (Samsung A5) and I get the download doe in 32.17s which is still a quite low bit rate compare to the expected max throughput.

You could try the CubeMonitor-RF tool that get a higher bitrate as the connection interval can be easily modified.

[Micha Valach]

Remi,

Thanks A Lot for your prompt reply

Micha