I was wondering if anyone else has encountered NAND access problems when using a TWR-PROTO board in a TWR-MCF5441x system.
What I am experiencing is that if I put a TWR-PROTO board (even a blank prototype board) in the tower AND connect the secondary side elevator I can have problems with NAND. This might include the bootloader not working (not properly loading and launching), MQX functions reporting bad NAND blocks, and/or checksum errors on stored images.
Interestingly, if I remove the secondary side elevator from the system, the NAND access is flawless. In fact if I plug the TWR-MCF5441x and TWR-SER2 into the secondary and just bypass TWR-PROTO it also works.
It seems to be the combination of having the TWR-PROTO board in place AND connecting the secondary side elevator that cause the NAND flash problems.
But that sounds crazy, doesn't it?