# wifiiot\_sdio.h ## **Overview** **Related Modules:** [Wifiiot](Wifiiot.md) **Description:** Declares the SDIO interface functions. These functions are used for SDIO initialization and data transmission. **Since:** 1.0 **Version:** 1.0 ## **Summary** ## Data Structures

Data Structure Name	Description
WifiIotSdioExtendFunc	Provides extended SDIO attributes.
WifiIotSdioAdmatable	Defines attributes of an SDIO ADMA table.
WifiIotSdioIntcallback	SDIO interrupt callback structure.

## Macros

Macro Name and Value	Description
WIFI_IOT_SDIO_EXTENDREG_COUNT 64	Indicates the number of extended registers on an SDIO device.

## Typedefs

Typedef Name	Description
NotifyHostMessageEvent) (void)	typedef void(* Indicates the callback invoked upon a message event on the host.

Typedef Name

Description

NotifyHostMessageEvent) (void)

typedef void(*

Indicates the callback invoked upon a message event on the host.

## Functions

Function Name	Description
SdioInit (void)	unsigned int Initializes the SDIO device.
SdioReinit (void)	unsigned int Reinitializes the SDIO device.
SdioSoftReset (void)	void Resets the SDIO device.
SdioRegisterCallback (const WifiIotSdioIntcallback *callbackFunc)	unsigned int Registers an interrupt callback for the SDIO device.
SdioCompleteSend (unsigned char *admaTable, unsigned int admaIndex)	unsigned int Completes data sending on the SDIO device.
SdioSetPadAdmatab (unsigned int padlen, unsigned char *admatable, unsigned int admaIndex)	unsigned int Sets the ADMA table that requires data padding.
SdioWriteExtinfo (WifiIotSdioExtendFunc *extFunc)	unsigned int Sets the extended SDIO attributes.
SdioSendData (unsigned int xferBytes)	void Starts to send data.
SdioSetAdmatable (unsigned char admatable, unsigned int admaIndex, const unsigned int dataAddr, unsigned int dataLen)	unsigned int Sets an SDIO ADMA.
SdioSchedMsg (void)	unsigned int Sends a suspended SDIO message.
SdioSendSyncMsg (unsigned int msg)	unsigned int Adds a message to a message queue and sends the message.
SdioSendMsgAck (unsigned int msg)	unsigned int Sends a specified message.
SdioProcessMsg (unsigned int sendMsg, unsigned int clearMsg)	unsigned int Clears a specified suspended message in the message queue, adds a new message to it, and sends the new message.
SdioIsPendingMsg (unsigned int msg)	unsigned int Checks whether a specified message is suspended.
SdioIsSendingMsg (unsigned int msg)	unsigned int Checks whether a specified message is being sent.
SdioGetExtendInfo (void)	WifiIotSdioExtendFunc * Obtains the extended configuration.
SdioRegisterNotifyMessageCallback (NotifyHostMessageEvent msgEventCallback)	void Registers the callback that will be invoked when the host sends a message or data.
SdioSetPowerdownWhenDeepSleep (unsigned char powerDown)	void Sets whether the SDIO device is powered off in deep sleep mode.