Why there is not fallowed the driver filenames convention of the original arduino drivers, you named XSPI.h and XSD.h instead of SPI.h and SD.h, that will make those two drivers incompatible with all existing higher level drivers with no exception ( as: fatal error: SPI.h: No such file or directory, for example ) , a better idea was to integrate a compatibility layer, to compatinilize the drivers with all higher level drivers and keep the name with X for .... don't know why.
Why there is not fallowed the driver filenames convention of the original arduino drivers, you named XSPI.h and XSD.h instead of SPI.h and SD.h, that will make those two drivers incompatible with all existing higher level drivers with no exception ( as: fatal error: SPI.h: No such file or directory, for example ) , a better idea was to integrate a compatibility layer, to compatinilize the drivers with all higher level drivers and keep the name with X for .... don't know why.