I have two Photons that are stuck in rapidly blinking cyan. I’ve read many of the threads, but still struggling to pin point the cause.
What I’ve tried so far:
- reset device keys
- re-connect WiFi several times
- flashing and reflashing multiple times, including latest firmware 1.5.2
I also used this serial monitor debug + tcp dump on my router to see that the device is receiving a DHCP IP and starting the connection with device.spark.io, but for some reason the
Particle.connect() never completes.
Any idea how to further debug the root cause? It happens 90% of the time. If I leave it blinking for hours, it will eventually connect. It used to connect pretty quickly a few weeks ago, but it has been intermittent ever since.
Serial connection closed. Attempting to reconnect... Serial monitor opened successfully: 0000005496 [hal.wlan] INFO: Using internal antenna configured credentials: ssid=secretSSID security=wpa2 cipher=1 available access points: <list other SSDIs> SSID=secretSSID security=wpa2 channel=11 rssi=-51 connecting to WiFi 0000006195 [hal.wlan] INFO: Joining secretSSID 0000006195 [hal.wlan] TRACE: Free RAM connect: 45704 0000007045 [hal.wlan] INFO: Bringing WiFi interface up with DHCP connected to WiFi! localIP=192.168.x.11 subnetMask=255.255.255.0 gatewayIP=192.168.x.1 dnsServerIP=192.168.x.1 (often 0.0.0.0) dhcpServerIP=192.168.x.1 (often 0.0.0.0) ping gateway=1 ping dnsServerIP=1 ping addr 184.108.40.206=1 device.spark.io=220.127.116.11 0000007204 [wiring] TRACE: TCPClient socket=20009208 connected to device server CoAP (testing connection only) connecting to cloud ^C
Here’s the raw output of tcpdump.