Hello I have made a program that uses bluetooth classic spp and the uart2, the purpose is to pass data through bluetooth and pass it to uart2 transparently, your code is very similar to mine, the whole trick is in the functions esp_spp_cb () and esp_bt_gap_cb ( ) in the events that they handle, and ...

You could put the code here in the forum to get out of my doubts I am trying the same as you but apart I must send the data by the uart