Re: MSP430 basics - pulling hair out!!!


"Rob" <rdsfal@xxxxxxxxxxxx> wrote in message
news:42da0038$0$18770$5a62ac22@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
> We are working on a small MSP430F149 project and are having a heap of
grief
> getting the basic hardware going.
>
> We continually get inconsistent results when attempting to connect and
> download to the msp430. Initially the JTAG will not connect but this
problem
> appeared
> to rectify itself. It then had trouble writing to memory at address
0x1100 -
> the start of the program flash. Reseating the msp430 in the ZIF socket
> seemed to fix this problem. We initially tried restarting the debug proxy
> and the debugger and cygwin without success.


0x1100 is not on a 512 byte page boundary.. you might
like to move this to 0x1200.. or you may have trouble with the info memory
area as well
also do the flash load at > 2.7 Volts..







>
> We finally managed to download to the device about 3 times. When the code
> ran it always stopped at the reset vector. We though it may be some
problem
> with the RTOS and the timers. The watchdog is switched off.
>
> We then tried one of the examples supplied with mspgcc LED flashing code.
We
> built the code without any problems but when we attempted to download the
> memory write error reappeared. We tried re-seating the micro in the ZIF
> socket etc without success.
>
> We are using the a homebrew JTAG programmer and a TI development board
> pwered by 2 x D cells and driving this via the mspgcc-20041112.exe
software.
>
> So many questions!!
> Where do we start debugging the system?
> Could the problem be timing related? Is the PC we are using too slow/fast?
> How can we check if everything is okay with the software setup/hardware
> setup?
>
> Any suggestions would be most appreciated.
>
> Thanks
> rob
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