TS-4800 LEDs

From Technologic Systems Manuals

On all of our baseboards we include 2 indicator LEDs which are under software control. You can manipulate these using "ts4800ctl --greenledon --redledon" or "ts4800ctl --greenledoff --redledoff". The LEDs have 4 behaviors from default software.

Green Behavior Red behavior Meaning
On Off System is booted and running
On On for approximately 15s, then off Once the system has booted the kernel and executed the startup script, it will check for a USB device and then determine if it is a mass storage device. This is used for updates/blasting through USB. Once it determines this is not a mass storage device the red LED will turn back off.
On Turns on for 300ms, and then turns off for 10s The watchdog is continuously resetting the board. This happens when the system cannot find a valid boot device, or the watchdog is otherwise not being fed. This is normally fed by ts4800ctl once a valid boot media has started. See the #Watchdog section for more details.
Off Off The FPGA is not able to start. Typically either the board is not being supplied with enough voltage, or the FPGA has been otherwise damaged. If a stable 5V is being provided and the supply is capable of providing at least 1A to the macrocontroller, an RMA is suggested.
On On The board is receiving too little power, or something is drawing too much current from the macrocontroller's power rails.