Page 178 - Programming the Photon Getting Started With the Internet of Things

errors:

Two red flashes Could not reach the Internet
Three red flashes Connected to the Internet but could not reach the Particle

cloud

Flashing orange Bad device keys
Red flash A pattern of more than 10 red flashes indicates that the firmware has
crashed. The pattern flashes in an SOS sequence with three short flashes, three long

flashes, and three short flashes again. If you encounter this issue, refer back to the
Safe mode option and try to reflash the firmware again. A number of other codes
may be expressed after the SOS red flashes:

Hard fault

Nonmaskable interrupt fault

Memory manager fault
Bus fault

Usage fault

Invalid length

Exit

Out of heap memory
Serial Peripheral Interface (SPI) overrun

Assertion failure

Invalid case

Pure virtual call

Summary

This brief chapter should give you a good understanding of what is happening to your
Photon in terms of the RGB LED flashes and colors. You should be able to adjust things
when everything does not quite go according to plan and understand what each mode is
doing and why. You can also visit the Particle community pages for more help if you are

still struggling with getting something to work. The community is supportive and active in
answering all kinds of technical questions.