I recently built my own ezFET lite based of the files that TI have made available.
Update 9/06:
Works "kinda" as expected.
Board disconnects from USB when a target board is attached and is being powered by the ezFET
Orange LED is 10x brighter than green LED. Will correct resistor values in next rev.
Programming works. Unfortunately I do not have a target board to test out the UART bridge yet.
Board is panelized, and fits in a 5cm square. This is the first time I've done this, copper pour gets very close to the edge when the boards are cut.
Downloads:
ezFet_lite_tagConnect_0_01.zip 1.46MB
6 downloads
Altium pcb/sch files, gerbers, schematic.
Information below is old, was due to the custom BSL not being flashed to the MSP430.
Unfortunately It doesn't work. :(
The board is identical to the reference schematic, all component values are equal.
The board enumerates fine,
When I plug in a target board I get error,
tilib: MSP430_Initialize: Interface Communication error (error = 35)
If I connect a target then connect the USB the board throws error
tilib: MSP430_OpenDevice: Unknown device (error = 5)
Finally, If I try to force a fw update via mspdebug
MSP430_GetNumberOfUsbIfs MSP430_GetNameOfUsbIf Found FET: COM3 MSP430_Initialize: COM3 Updating firmware using /cygdrive/e/eZ-FET lite rev 1.10 Release Package/Firmware/EZFET_LITE_Rev1_1_FW_3_3_0_6.txt Starting firmware update (this may take some time)... tilib: MSP430_FET_FwUpdate: Hardware State is unknown (error = 77) tilib: device initialization failed
Does anyone have experience with the ezFET lite firmware? am I missing something obvious?
I'll keep debugging this and report my findings.