I am trying to program a large number of cores and have run into a difficult snag.
What I am doing is using a usb cable and dfu-util to pass the credentials and claim the core then flashing from the command line with the command spark flash its_deviceId bin_file_path
Anyways this worked Great for 3 units on the fourth I got a flashing green led when the device should have transitioned to breathing cyan. While it is blinking green it will give a quick pulse of cyan every couple of minutes it lasts less than a second.
I have had this happen to each and every core since the 3 good unit. I now have 8 cores in my problem pile. They are all brand new right of the box.
Now for my setup I am using a PC and a TP-Link AP. I have rebooted the pc multiple times during this and have removed power from the AP to reboot.
My phone can connect to the AP no problem and 3 cores that I configured are able report data no problem through the AP.
I am pulling my hair out, any ideas?