BLE error detection

jhulbert
Posts: 7
Joined: Thu Jan 28, 2021 9:50 pm

BLE error detection

Postby jhulbert » Thu Jun 24, 2021 5:16 am

Hi

I've read in a few places that the BLE spec requires a packet to be retransmitted if its checksum calculated at the receiver does not match the checksum sent by the transmitter i.e. error detection.

I want to confirm whether this is true, and that the ESP32 BLE stack using Bluedroid implements this automatically, or if this functionality must be implemented by the programmer.

Cheers

ESP_sushant
Posts: 8
Joined: Mon Aug 26, 2019 6:10 am

Re: BLE error detection

Postby ESP_sushant » Mon Jun 28, 2021 7:18 pm

CRC check for over the air transmitted packets and re-transmission as required is done BLE Link Layer firmware as per BLE specifications.

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