It wasn’t my initial intention to use the Bus Pirate.
But my first naive attempts to talk from Hercules to EEPROM failed.
I could create the SPI instructions with the LaunchPad, but I didn’t get a reply back from the 25LC256.
It’s in these cases that a Bus Pirate comes in handy. It’s easy to prototype a SPI conversation from the Pirate’s command prompt.
Details at Jan Cumps’s blog.