Typedef

This section introduces the typedef that SPIS M-HAL used. More...

Overview

This section introduces the typedef that SPIS M-HAL used.

Typedefs
typedef int(*	spis_dma_done_callback )(void *user_data)
	This defines the callback function prototype. More...

Typedef Documentation

typedef int(* spis_dma_done_callback)(void *user_data)

This defines the callback function prototype.

It's used for DMA mode transaction.
User should register a callback function when using SPI DMA mode.
In DMA mode, mtk_mhal_spis_dma_transfer_one() returns a value once the SPI hardware register is assigned and the DMA configured.
During this process, the transaction is usually incomplete, once it completes, a DMA interrupt is triggered and a related user callback is called in the DMA interrupt service routine.
This typedef is used to describe the callback function what the user wants to call.

Parameters

[in]

user_data

spis controller struct mtk_spis_controller.

See Also

mtk_mhal_spis_dma_done_callback_register()

Returns

Return "0" if callback register successfully, or return "-1" if fail.