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An NOR BSP is required so that a physical-layer driver for a serial flash will work on a particular system. For more information about these functions, see section C-11.

Function	Description
`FSDev_NOR_BSP_SPI_Open()`	Open (initialize) SPI.
`FSDev_NOR_BSP_SPI_Close()`	Close (uninitialize) SPI.
`FSDev_NOR_BSP_SPI_Lock()`	Acquire SPI lock.
`FSDev_NOR_BSP_SPI_Unlock()`	Release SPI lock.
`FSDev_NOR_BSP_SPI_Rd()`	Read from SPI.
`FSDev_NOR_BSP_SPI_Wr()`	Write to SPI.
`FSDev_NOR_BSP_SPI_ChipSelEn()`	Enable chip select.
`FSDev_NOR_BSP_SPI_ChipSelDis()`	Disable chip select.
`FSDev_NOR_BSP_SPI_SetClkFreq()`	Set SPI clock frequency.

Table 16-5 NOR SPI BSP functionsNOR Flash SPI BSP.

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