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Erased Firmware and cannot be detected

Tim Theodorou
Prodigy 40 points
Other Parts Discussed in Thread: LMT70, LMT70EVM

Hi, 

I just bought a LMT70 evaluation module, installed the firmware and started seeing measurements. Under Setup Tab, i pressed Update firmware, and accidentally erased the previous firmware. As a result, my aveluation module cannot be detected under Ports tab and the device has been bricked. Please help!

  • 0
    TI__Mastermind 43875 points
    The User's Guide, page 8, explains how to flash the EVM. You can use the txt file referred to in those instructions with any MSP430 flashing utility.
    www.ti.com/.../sniu024b.pdf

    Ren
  • 0 in reply to Ren Schackmann
    Prodigy 40 points
    Hi Ren,

    Unfortunately, it doesn't recognize the module at all. Instead of writing "Found 1 Device" , mine says "No device found" .
  • 0 in reply to Tim Theodorou
    TI__Mastermind 43875 points

    The MSP430 must be in BootStrap Loader (BSL) mode to be flashed over USB. This is normally achieved by holding the BSL button while attaching to USB. Since the LMT70EVM does not feature a BSL button, you will need to connect the PUR signal at R40 to VBUS using ~100ohm resistor to emulate the function of the BSL button. See page 14 of the MSP430 USB Design document for information on the BSL button, and see page 22 of the LMT70EVM User's Guide for the EVM schematic. Note that This connection will need to be removed after flashing to resume normal operation.

    Alternatively, if you have another MSP430 debugger or launchpad, you can connect it to the unpopulated header J4 and flash using SBW.

    Ren