ESP32 Thing not on network (does not acknowledge ping)

Wireless & IoT
1

  • Updated the Arduino ESP32 libraries via github to the latest and greatest

  • Using “HelloServer” sketch (from Examples->WebServer->HelloServer)

  • Tested (2) SparkFun ESP32 Things and (1) DFRobot ESP32 FireBeetle using above sketch (i.e. “HelloServer”)

  • Both ESP32 Things will not answer a generic “ping” request

  • FireBeetle respnds to the “ping” request

  • RSSI on all three boards between -54 and -56 (checked with WiFi.scanNetworks() in a different sketch

Attached: 3 snapshots: 192.168.1.107 and 192.168.1.103 are ESP32 Things. 192.168.1.102 is a FireBeetle

==> why do the ESP32 Things indicate that they are connected to the network but cannot receive a simple ping?

==> no issues with FireBeetle using identical environment so the finger is pointing towards the ESP32 Thing as the problem

esp32_thing_number_1.jpg1252×607 92.8 KB
http://www.femtosystems.com/esp32_thing_number_1.jpg

esp32_thing_number_2.jpg1567×591 102 KB
http://www.femtosystems.com/esp32_thing_number_2.jpg

esp32_firebeetle.jpg1571×606 110 KB
http://www.femtosystems.com/esp32_firebeetle.jpg

2

Ping is (very) low level implementation in the TCP stack. A basic question: did the helloserver.ino displayed the TCP/IP addresses that you use ? what happens if you connect ? did you get the messages ?