how to get the accurate timestamp of bluetooth GATT package sending?

yongfa zhou

as we known, low energy just give a callback of GATT, so how to get the accurate timestamp of GATT attiburate sending? Thanks

over 13 years ago

0 kazola over 13 years ago

Guru 18605 points

You can check by using the BLE sniffer?

Or by using the typical GPIO to oscilloscope trick?

Let us know.

0 yongfa zhou over 13 years ago in reply to kazola

Prodigy 170 points

we can't use the third device to get the timestamp. as far as i known, BT LE stack has some tasks like GATT_ProcessEvent, LL_ProcessEvent, HCI_ProcessEvent. i have traced the task call, after send GATT attribute value, stack will call HCI and LL task, but i don't known which task calling means GATT is sent completed.

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how to get the accurate timestamp of bluetooth GATT package sending?