In the enet_lwip project there are the files for fatfs support. This does not seem to be complete as it is not initialised or the timer tick hooked in. This seemed simple enough to add. Next was the port pin config for the sdcard. The ones in the file (mmc_ek_lm4c129x.c) )were changed to use SSI1 (as the errata says only SSI1 works in legacy mode) using pins PB4,5 and PE4,5. The existing code implies it sets the port pin config, but this doesn't seem to happen - if I manually set the GPIO_PCTL registers in CCS5 (the naming seems to differ from the datasheet) I can get the ssi to output data. However, fatfs doesn't seem to work.
Has anyone got this to work?
Is there some magic to getting the rom calls to set the correct port config?