Recently customer has a question about the wait time of the bluetooth module datathrough after power on .
You can refer below :
1)When Bluetooth module is not used.
4.Wait 2 sec total,UART config,Able to control module
So you can notice from above that ,blueooth module original status -BT_RESET Low ,after tens of milliseconds ,the BT_RESET auto draw to High .No need control the reset .
Then about 2 sec total ,you are able to control module .