Electrons Fails Cloud Connect After Flashing (Time Sync Issue?)


#1

I’ve been working on automating the flashing and testing of electrons. I’m having a problem where every device consistently is stuck flashing cyan until I power cycle the device.

Here is the manufacturing process leading to this:

  1. Plug Electron in to computer via usb (device also connected to sensor peripherals needed for testing)
  2. Electron is automatically put into DFU mode via po-util
  3. Electron is flashed with the three parts of System Firmware v0.6.4
  4. Electron is flashed with my Application Firmware
  5. Electron is automatically put into Serial mode via po-util
  6. Particle Identify is automatically ran and parsed for device ID and SIM ICCID
  7. SIM is activated
  8. Electron is automatically pulled back out of serial mode via po-util
  9. Script waits for the device to send valid data to my MQTT server
  10. More things…

In the Waiting For Validation state (#9), the device connects to MQTT just fine and starts sending data.
However, the device enters and remains in the flashing cyan state (not connected to particle cloud, but trying in theory). The interesting thing is that the timestamps being sent to my server are all negative integers.

Normally, before the device syncs for the first time since power-down, the time stamp begins at an epoch time that is in the vicinity of 944006421. However, the timestamps I receive are along the lines of -1141883740

If I reset the device, this state doesn’t change. However, once I power cycle the device, it immediately begins working as expected, returning times such as 1531520655

So, what I’m thinking is that somehow the time isn’t syncing properly when the device is hitting the network, and it’s causing the devices to get rejected from beginning the handshake with the Particle cloud. This happens with every single device using my procedure above. Any thoughts on what might be happening to cause this and how I could ensure a good handshake without a power-cycle?


#2

Let me ping someone that might be able to help, @rickkas7 or @ParticleD are you able to assist?


#3

Still interested in learning more about why this happens, but for now repurposed a photon as a cloud power reset switch for whatever device I have connected so it’s not an immediate issue anymore. This allows me to just add a full power reset into my python programming/testing script.

It’s strange though because normally when flashing manually this doesn’t seem to happen, but my automated process seems to be influencing the presence of the issue.