Search found 3 matches

by LuigiMacedonia
Mon Dec 13, 2021 1:47 pm
Forum: ESP32 Arduino
Topic: 1(one) esp_ble_gattc_write_char_descr sends 5 WriteRequests
Replies: 0
Views: 1899

1(one) esp_ble_gattc_write_char_descr sends 5 WriteRequests

Hi I am calling from my ESP32 only once esp_ble_gattc_write_char_descr but I see with a NRF sniffer that the device receives 5 WriteRequests (with ~44800µSec between them), and only stops sending when the device returns a Write Request Rcvd Is there some kind of timeout which is automatically retryi...
by LuigiMacedonia
Sat Dec 04, 2021 12:40 am
Forum: ESP32 Arduino
Topic: Understanding the concepts behind a Wireshark capture
Replies: 0
Views: 2547

Understanding the concepts behind a Wireshark capture

HI! I am trying to replicate the handshake of a remote control. I am sniffing the traffic with a nRF 52840 dongle, but there are things that I really can't understand. Here I am pasting the relevant traffic captured with Wireshark. I am simplifying the UUIDs for an easier reading. I'm omitting the R...
by LuigiMacedonia
Tue Nov 09, 2021 11:45 am
Forum: ESP32 Arduino
Topic: Unable to send AT commands to a JDY-40
Replies: 0
Views: 2378

Unable to send AT commands to a JDY-40

Hi! I am new in this esp32 universe. I am trying to replicate a remote control with a esp32. I disassembled it, and found a JDY-40 chip inside. Got one, and connected to the esp32. The JDY is able to read the commands sent by the remote: while (Serial2.available()) { Serial.print(char(Serial2.read()...