Kontron KEAPI Bedienungsanleitung PDF herunterladen (Seite 29)

Software specification for Kontron EAPI

in/ out

pDataLength

Also an "out" parameter. When the function finishes,

this parameter contains a real value of the read data

length.

2.15 SMBus

2.15.1 KEApiGetSmbusCount

KEAPI_CALLTYPE KEAPI_UINT32 KEApiGetSmbusCount (

KEAPI_UINT32 boardHandle,

KEAPI_PUCHAR pSmbusCount

);

Description:

Function for getting number of active SMBuses.

Parameters:

in/out

Parameter name

Description

boardHandle

Handle of the selected board

out

pSmbusCount

Pointer to variable to save SMBus count

2.15.2 KEApiSmbusQuickCommand

KEAPI_CALLTYPE KEAPI_UINT32 KEApiSmbusQuickCommand (

KEAPI_UINT32 boardHandle,

KEAPI_UCHAR smbusNr,

KEAPI_UCHAR smbusAddress,

KEAPI_UCHAR operation

);

Description:

Quick command read/write may be used to simply turn a device on/off or to enable/disable low-power

standby mode etc. There is no data received. For additional information, refer to the System

Management Bus(SMBus) Specification Version 2.0, which is available at

http://smbus.org/specs/smbus20.pdf.

Parameters:

in/out

Parameter name

Description

boardHandle

Handle of the selected board.

smbusNr

Number of SMBus. From 0 to (SmbusCount - 1) returned by

KEApiGetSmbusCount.

smbusAddress

Address of SMBus slave device

operation

What should be done

 SMBUS_WRITE (0)

 SMBUS_READ (1)

2.15.3 KEApiSmbusSendByte

KEAPI_CALLTYPE KEAPI_UINT32 KEApiSmbusSendByte (

KEAPI_UINT32 boardHandle,

KEAPI_UCHAR smbusNr,

KEAPI_UCHAR smbusAddress,

KEAPI_UCHAR byte

);

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