When the Femtofox is finished booting, it will blink its User LED (see below) in a pattern which can be used to gather info on its status or help diagnose issues.
| LED blink pattern | Meaning | Possible causes | Solutions |
|---|---|---|---|
⚠️ |
Failed to mount USB drive. Ignoring. | • Invalid filesystem • Corrupted partition table • Defective USB drive • Defective USB OTG adapter |
• Use a supported partition (FAT32, exFAT, NTFS, ext4) • Repair partition table • Try another USB drive • Try another USB OTG adapter |
⚠️ |
femtofox-config.txt is configured to skip if log exists. | femtofox-config.txt is configured to skip if USB drive mounted successfully but femtofox-config.txt contains dont_run_if_log_exists="true" and a log is present on the USB drive. Ignoring. |
• Remove log from USB drive. • Remove dont_run_if_log_exists line from femtofox-config.txt. |
⚠️ |
USB drive mounted successfully but femtofox-config.txt was not found. | Config file missing. | Create configuration file as described in USB Configuration Tool. |
⚠️ |
USB drive mounted successfully and femtofox-config.txt was found but did not contain readable configuration data. | Configuration file improperly formatted or contains no data. | Check configuration file contents as described in USB Configuration Tool. |
⚠️ |
Error while trying to implement a setting. Some settings may have been implemented successfully. | • The error may be transient. • Configuration file may contain improper data. |
• Try again. • Check configuration file contents as described in USB Configuration Tool. • Check the log. This pattern may flash after the "success" pattern. |
✅ |
USB drive mounted successfully, and femtofox-config.txt was found and contained configuration data which was sent for deployment. Any affected services will now restart. You can disconnect the USB drive. | This does not mean that the information in the config file is correct - only that it was readable. Note that the "success" boot code will flash if at least one setting is successfully read - even if the setting was not implemented successfully. |
|
✅ |
Boot complete. Appears on every successful boot and always appears last. | 🎉 Hooray! |
!NOTEBoot codes can appear in sequence - for example: one long (4 second) blink, followed by 5 medium (half second) blinks means the USB drive failed to mount, and that the boot sequence is complete.
!NOTEDuring first boot, a run-once script executes. While this script is running, the User LED will power on and off every half second. This can take up to about 7 minutes, after which Femtofox will reboot.