Fujitsu DTV/STB solution driver (FAPex driver) Documentation [V01L00R00]


abst_libgpio.c File Reference

abstraction library source file (GPIO driver). More...

Functions

FAPEXOPENRET_T FAPEX_GPIO_Open (FAPEXOPENARG1_T id, FAPEXOPENARG2_T flags, FAPEXOPENARG3_T argptr)
 open method. This function is called with the systemcall "open".
FAPEXRELRET_T FAPEX_GPIO_Close (FAPEXRELARG1_T id)
 release method. This function is called with the systemcall "close".
FAPEXIOCRET_T FAPEX_GPIO_Ioctl (FAPEXIOCARG1_T id, FAPEXIOCARG2_T cmd, FAPEXIOCARG3_T pArg)
 ioctl method. This function is called with the systemcall "ioctl".

Detailed Description

abstraction library source file (GPIO driver).

These function is executed in user space.

Attention:
This program is provided as is. You can redistribute it and/or modify it. Fujitsu Semiconductor Limited accepts no responsibility or liability for any errors or omissions.

Copyright (C) 2008-2010 Fujitsu Semiconductor Limited, All Rights Reserved.


Function Documentation

FAPEXOPENRET_T FAPEX_GPIO_Open ( FAPEXOPENARG1_T  id,
FAPEXOPENARG2_T  flags,
FAPEXOPENARG3_T  argptr 
)

open method. This function is called with the systemcall "open".

Parameters:
idThe device identifier.
flagsThis parameter indicate a open mode (read only/write only/read-write).
This implementation supports only read-write mode.
argptrargument pointer (FAPEX_GPIO_OpenParamStrT)
If descriptor for this 'id' has already been opened, this 'argptr' will be invalid.
Return values:
>=0process OK, new file descriptor is returned.
<0process fails, its value is set to errno.
FAPEXRELRET_T FAPEX_GPIO_Close ( FAPEXRELARG1_T  id )

release method. This function is called with the systemcall "close".

Parameters:
idThe identifier for this descriptor.
Return values:
0process OK
<0process fails, its value is set to errno.
FAPEXIOCRET_T FAPEX_GPIO_Ioctl ( FAPEXIOCARG1_T  id,
FAPEXIOCARG2_T  cmd,
FAPEXIOCARG3_T  pArg 
)

ioctl method. This function is called with the systemcall "ioctl".

Parameters:
idThe identifier for this descriptor.
cmdThe ioctl command.
pArgThe pointer to the argument of the ioctl command.
Return values:
0process OK
<0process fails, its value is set to errno.

ioctl command(cmd) type:

  • FAPEX_IOCCOM_GPIO_READBIT
    Read of bit data corresponding to opening GPIOpin.
    Set pointer of bit data field (int32_t) to pArg.
    Please note the specification of the connected device.

  • FAPEX_IOCCOM_GPIO_WRITEBIT
    Write of bit data corresponding to opening GPIOpin.
    Set pointer of bit data field (int32_t) to pArg.
    Please note the specification of the connected device.


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Copyright © 2008-2010 by Fujitsu Semiconductor Limited

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