ESP8266 Community Forum

- Sat Mar 30, 2019 9:28 am #81447 Hello,

I have been programming an ESP8285 Teensy Add-on board (https://www.tindie.com/products/onehorse/esp8285-add-on-for-teensy-32/) and today ran into a problem. I was sending UDP packets, but then the ESP started sending packets on the "QUIC" protocol, for no reason that I am aware of. The exact same code, when flashed to a second, identical ESP8285 Add-on board, sends UDP packets as expected. I wired up both devices identically too. I have tried resetting and re-programming the ESP but to no avail.

Here is the code:

Code: Select allchar msg[59] = "hello world 123456789 10 11 12 13 14 15 16 17 18 19 20!!!!";
const uint16_t port = 1234;
const char server_ip[] = "192.168.43.243";
WiFiUDP client;

void initWifi() {
   std::string ssid = "********"; //removed, but I can say that it is definitely connecting to my AP
   std::string password = "*******"; // also removed

   WiFi.mode(WIFI_STA);
   WiFi.begin(ssid.c_str(), password.c_str());
   uint8_t count = 0;
   while (WiFi.status() != WL_CONNECTED) {
      delay(500);
      Serial.print(".");
      count++;
   }
   client.begin(port);
}

void test_udpsend() {
   uint8_t size = sizeof(msg);
   client.beginPacket(server_ip, port);
   client.write(msg, size);
   client.endPacket();
   queue_s_w.increment_read_pos();
}

void setup() {
   Serial.begin(230400);
   initWifi();
   wifi_set_sleep_type(LIGHT_SLEEP_T); // Enable light sleep mode to save power
}

void loop() {
   test_udpsend();
}


This image shows the wireshark capture for the working ESP:


This image shows the wireshark capture for the "protected payload" mode ESP:


I assume that the ESP has got into some mode that I am unaware of... but I'd have thought that reprogramming it and re-connecting all the wires might have solved this. Any thoughts would be appreciated!

Thanks!

Attachments

The expected output, seen from the second ESP8285 Add-on

The output of the ESP in the protected payload mode