Hi Norberto Jiménez
Just for information, the SPI demo creates one task for spi master, which is responsible for configuring the SPI protocol, erasing memory in memory board and reading data from and writing data the the memory board. The MCU is the master and the SPI serial flash memroy is the slave in the SPI data transfer.
you need to connect your TWR-MCU board with TWR-MEM board when you test the SPI demo.
Please also check your jumper setting in your TWR-MEM board
J4: Serial Flash Configuration options 1-2
J14: Serial Flash Chip-select 1-2
Regards
Daniel