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MSP-FET430UIF no green light

Darryl Ben
Prodigy 50 points

Other Parts Discussed in Thread: MSP430F1612

  I plug the device into the PC (windows 7) and the device does not power up.  There is power being supplied to the device via the USB.  The PC recognizes the device in "device manager" and is on com 2.  There is no conflict of coms and I reinstalled the device drivers. 

I came across a statement that the device has a fuse logic but the explaination about it was not specific on reseting the fuse logic.  I was wondering if there are any suggestions on resolving the issue.

Thanks.

  • 0
    Guru 227245 points

    All USB based FETs are two-fold. First part is an TUSB USB/ser converter chip usually with an I2C eeprom attached. ThHis chip enumerates int eh device manager and generates the serial port. If the eeprom is damaged, it shows up as generic TUSb chip rather than MSP FET.
    The othe rpart is teh MSP430F1612 processor that gets the serial data form the TUSB and controls the JTAG. It also controls the LED. It might be broken. The TUSB is powered by USB power directly, the MSP has a voltage regulator (also sourced by USB power). If it is broken, then the MSP is not powered, but the device still enumerates.

    I guess, the 'fuse logic' refers to an overcurrent sensing circuit that shuts down port and supply voltage for the target MSP when the target draws too much current. It should have no effect if no target is attached, and even if, it shouldn't affect the FET operation itself.

    When you first used the FETUIF, did the software offer a firmware update?

  • 0 in reply to Jens-Michael Gross
    Prodigy 50 points

    The MSPFET430 was not recognized on my current PC and it didn't ask to update the firmware.  However, I used a different computer with the same set up and I still didn't get a prompt for it.  The CCS v5 program did recognized the FET and I manually updated the firmware.  The device is working now.  Both PCs have CCS full versions.

    Thanks.

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