Indicators

In this section:

I-jet has three LED indicators on the top, marked TPWR, DBG, and USB. The following indicators and their statuses are described in detail:

Indicator status	Description
Off	Power to target is not provided by I-jet.
Green	Power to target is provided by I-jet.
Yellow	Warning. Power to target is above 420 mA.
Red	Error. Overcurrent limit (520 mA) detected and power to target was switched off for protection.

Table 5. TPWR indicator statuses

Indicator status	Description
Off	vTref on JTAG header is too low.
Green	vTref is at or above 1.8 V.
Green blinking	Indicates JTAG/SWD communication activity.

Table 6. DBG indicator statuses

Indicator status	Description
Off	No USB power.
Green steady	Initial state or no transfer.
Green blinking	USB transfers to or from I-jet.
Red blinking	USB enumeration.
Red steady	USB error, broken cable, or hardware defect. Inspect the cable and/or try a different USB port.

Table 7. USB indicator statuses

IAR Debug Probes