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MSP430F5525 programming problem

Marcelgl
Prodigy 180 points

I have problems programming the F5525 via SBW. I have a F5525 on a board and only SBW and power connected. But no communication possible. All the USB related pins are left unconnected is this a problem ? The doc does not specift what to do with VBUS and bus GND when USB is not used. 
Anybody used this series ? 

  • 0
    Genius 3770 points

    Did you connect the debugger GND to the F5525 GND? You need shared ground between the debug emulator and the device for SBW to work. Also make sure there's no excessive capacitance on the SBW pins which can interfere with SBW operations.

    Tony

  • 0 in reply to TonyKao
    Prodigy 180 points

    because I experienced  problems  I solderen a F5525 on an empty PCB. The only pins which are connected are DVCC GND and AVCC .   Both the SBW pins are connected to the debugget with no additional capacitors. GND and VCC are also connected to the debugger. 

    I am using the debugger PCB from a EZkit-RF2500 When I check with scope I see clock and data.. but I don`t know what to expect ( and when ) from the MSP. 

  • 0 in reply to Marcelgl
    Genius 3770 points

    Do you have bypass capacitor on VCORE? It is necessary for the internal voltage regulator to provide 1.8V to the internal CPU.

    Also make sure that there's at least a 10:1 ratio of capacitance between VCC and VCORE; the datasheet gives a nominal 4.7uf spread between the VCC pins and 470nf on VCORE.

    Tony

  • 0 in reply to Marcelgl
    TI__Guru 68116 points

    Hi Marcel,

    Marcel Gielen said:
    I am using the debugger PCB from a EZkit-RF2500

    The ez430-RF2500 kit is what you are using to program the device (this is the USB-stick form factor tool, right?) The firmware in that programmer does not support all devices, it was designed to go with a specific kit. You may want to see the user's guide section 5 on p. 10 "Supported devices". This programmer supports only 20xx and 22xx devices.

    The main programming tool for MSP430 that is updated to support all new devices as they are released is the MSP-FET430UIF programmer. In addition, this programmer also supports the full 4-wire JTAG which will program your large 5xx part faster than SBW. There are also some other programmer options out there if you search the forums and ti website, but unfortunately I don't think that the ez430-RF kit programmer is going to work out for you with this part.

    Regards,

    Katie

  • 0 in reply to Katie Pier
    Prodigy 180 points

    Hi Katie,

    I assumed that all SBW deviced could be programmed with the USB dongle. This was indeed not the case. I changed the programmer/debugger and now it works without problems. 

    Thanks for your help,

      Regards,

       Marcel 

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