NOR BSP Overview

A BSP is required so that a physical-layer driver for a parallel flash will work on a particular system. The functions shown in the table below must be implemented. Pleaser refer to section C-10 “NOR Flash BSP” for the details about implementing your own BSP.

Function	Description
`FSDev_NOR_BSP_Open()`	Open (initialize) bus for NOR.
`FSDev_NOR_BSP_Close()`	Close (uninitialize) bus for NOR.
`FSDev_NOR_BSP_Rd_XX()`	Read from bus interface.
`FSDev_NOR_BSP_RdWord_XX()`	Read word from bus interface.
`FSDev_NOR_BSP_WrWord_XX()`	Write word to bus interface
`FSDev_NOR_BSP_WaitWhileBusy()`	Wait while NOR is busy.

Table 16-4 NOR BSP functions

The Open()/Close() functions are called upon open/close; these calls are always matched.

The remaining functions (Rd_XX(), RdWord_XX(), WrWord_XX()) read data from or write data to the NOR. If a single parallel NOR device will be accessed, these function may be defined as macros to speed up bus accesses.