Search found 5 matches

by bschwind
Mon Dec 11, 2017 7:54 am
Forum: ESP-IDF
Topic: smartphone esp32 ble communcation and encryption
Replies: 3
Views: 7115

Re: smartphone esp32 ble communcation and encryption

Is there anywhere I can read about the encryption used? I'm developing a device which uses BLE for a part of its operation and I want to have my bases covered and make sure I'm using it properly. Right now the blufi example uses its own diffie-helman key exchange and encryption on top of BLE. espiot...
by bschwind
Thu Jul 06, 2017 4:27 pm
Forum: ESP-IDF
Topic: RMT Peripheral - Receiving
Replies: 5
Views: 9588

Re: RMT Peripheral - Receiving

I'm so sorry, everyone. This has never happened to me before, but the problem was in the jumper wire to GND.

Everything works as expected now, including GPIO25.

Image
by bschwind
Thu Jul 06, 2017 4:07 pm
Forum: ESP-IDF
Topic: RMT Peripheral - Receiving
Replies: 5
Views: 9588

Re: RMT Peripheral - Receiving

I just got it! This is rather stupid, but I had the output connected to GPIO25. I switched to GPIO19 (which I swear I had tried before) and it worked! Still trying to understand why GPIO25 didn't work though, still investigating.
by bschwind
Thu Jul 06, 2017 7:36 am
Forum: ESP-IDF
Topic: RMT Peripheral - Receiving
Replies: 5
Views: 9588

Re: RMT Peripheral - Receiving

After thinking more about this, it might be the logic levels on the TSOP 1738 vs the ESP32. It works well on the ESP8266 so I assumed everything was fine, but maybe there's a level shifter on the NodeMCU board which isn't present on the ESP32 dev kit C. In any case, I'll try shifting the logic level...
by bschwind
Mon Jul 03, 2017 5:00 pm
Forum: ESP-IDF
Topic: RMT Peripheral - Receiving
Replies: 5
Views: 9588

RMT Peripheral - Receiving

Hi there, I've been fighting with the receiving part of the RMT peripheral for some time now. I have a known working TSOP 1738, with two separate and seemingly fully functioning ESP32 boards. One is an ESP-WROOM-32 and the other is a ESP Dev Kit C. Main problem is I can't get any pulse data from the...