Posted on February 12, 2012 at 01:57What development system are you using?
With the Keil system at the beginning often I got the error message ''Invalid ROM table''. This happens, if you try to load a program, which in the startup configures the PLL frequency to a too high value. The ST4 Discovey board has 8MHz crystal, and the Keil MBCSTM32F400 board has a 25MHz crystal. If you load a ST4 Discovery example to the Keil board, you have to be very careful, that in the startup code the variables are correctly redefined, otherwise exactly this will happen (the Discovery examples usually use PLL frequency of 168MHz, so then with the Keil 25MHz the PLL would try to got to about 600MHz - which is a bit much).
Unfortunately Debugger of STM32 seems to have no possibility to startup in some ''safe mode'' (although the devices have internal RC osciallator, I think ST should maybe think of implementing this in future devices, would be very helpful).
In such a case you need to do the following things at the Keil board: Power down, set Jumper BOOT0, re-power, set Flash load settings to ''Erase complete device'' and load down some working Keil example. Then again power down, reset BOOT0 jumper, and re-power - then it will work again.
