Added asterisks.

Ok, didn't find a handy list anywhere so made my own: GPIO 0* 1 2* 3 4* 5* 6-11 are used by SPI flash exclusively 12* 13 14 15* 16 17 18 19 20 is not there 21 22 23 24 is not there 25 26 27 28-31 is not there 32 33 total GPIO: 22 pins GPI (input only) 34 35 36 37 not on WROOM 38 not on WROOM 39 Tota...

Ok, I think we have enough candidates now. Thanks everyone.

I found what I think is an older RFCOMM server example but the include file "rfcomm.h " is no longer in the latest IDF. #include <stdio.h> #include <unistd.h> #include <sys/socket.h> #include <bluetooth/bluetooth.h> #include <bluetooth/rfcomm.h> int main(int argc, char **argv) { struct sockaddr_rc l...

+1 also looking for RFCOMM example with some direction on how to connect in windows 10.

Already bought the book (see first post in this thread). It is helpful.

That did it! Thank you Kolban!

Not familiar with "virtual coffee". How about paypal instead?

Peter

I have tried other code examples with the same result. also updated the IDF to latest. installed wireshark. here's what happens once the client and listener find each other: 688 103.012844 192.168.0.34 192.168.0.52 TCP 60 7777 → 52319 [RST, ACK] Seq=1 Ack=1 Win=5744 Len=0 689 103.514148 192.168.0.52...

I have been uses the bt examples in the IDF: https://github.com/espressif/esp-idf/tree/master/examples/bluetooth Got several to work. can connect to them with my phone and pair with them in Windows. however, even if I manually add a comm port it will not connect to the SPP devices in Windows. How is...

serial logs of connections (or attempts) with PC... AP and beServer = 1 (softAP acting as listening server) $ make monitor MONITOR --- idf_monitor on com10 115200 --- --- Quit: Ctrl+] | Menu: Ctrl+T | Help: Ctrl+T followed by Ctrl+H --- ets Jun 8 2016 00:22:57 rst:0x1 (POWERON_RESET),boot:0x13 (SPI_...