ESP32 Forum

Posted: **Mon Jun 26, 2017 5:51 am**

Is there any way to achieve maximum ble throughtput between ESP and NRF52832?
I tried to change the connection interval, but the parameter was denied by ESP32, because the BLE stack of ESP32 return 0x3b which means CONN_INTERVAL_UNACCEPTABLE. Are there any docs describing the minimum connection interval that ESP32 can accept?
Thanks!

Posted: **Tue Jul 04, 2017 7:52 am**

Besides lower the connection interval, I have to extend the packet length for BLE. Luckily, ESP32's bluetooth stack accepts the MTU size exchange request issued by NRF52, resulting 247bytes/packet.Now the transfer speed between ESP32 and NRF52 using ble is up to about 12k bytes/s(with packet parsing and some request/response expense).Though it's far below the ideal 100kB/s trans speed claimed in this thread https://devzone.nordicsemi.com/question ... h-s132-v3/
I'm pleased with current result and I'll optimize this later on.

ESP32 Forum

what's the maximum BLE transfer speed beteen ESP32 and Nordic alike ble SOC

what's the maximum BLE transfer speed beteen ESP32 and Nordic alike ble SOC

Re: what's the maximum BLE transfer speed beteen ESP32 and Nordic alike ble SOC