Broadcom (2835) GPIO controller implementation. More...

#include <BroadcomGPIO.h>

Public Types
enum	Mode { Input = 0 , Output = 1 , Function0 = 4 , Function1 = 5 , Function2 = 6 , Function3 = 7 , Function4 = 3 , Function5 = 2 }
	Pin modes. More...

enum	Result { Success , NotFound , IOError }
	Result code. More...

Public Member Functions
	BroadcomGPIO ()
	Constructor.

virtual Result	initialize ()
	Initialize the Controller.

virtual Result	setAltFunction (Size pin, uint function)
	Set alternate function.

Private Types
enum	Registers { FunctionSelect0 = 0 }
	Hardware registers. More...

Private Attributes
Arch::IO	m_io
	I/O instance.

Static Private Attributes
static const Address	GPIOBase = 0x200000

Detailed Description

Broadcom (2835) GPIO controller implementation.

Definition at line 38 of file BroadcomGPIO.h.

Member Enumeration Documentation

◆ Mode

enum BroadcomGPIO::Mode

Pin modes.

Enumerator
Input
Output
Function0
Function1
Function2
Function3
Function4
Function5

Definition at line 57 of file BroadcomGPIO.h.

◆ Registers

enum BroadcomGPIO::Registers

private

Hardware registers.

Enumerator
FunctionSelect0

Definition at line 47 of file BroadcomGPIO.h.

◆ Result

enum BroadcomGPIO::Result

Result code.

Enumerator
Success
NotFound
IOError

Definition at line 72 of file BroadcomGPIO.h.

Constructor & Destructor Documentation

◆ BroadcomGPIO()

BroadcomGPIO::BroadcomGPIO ( )

Constructor.

Definition at line 21 of file BroadcomGPIO.cpp.

Member Function Documentation

◆ initialize()

BroadcomGPIO::Result BroadcomGPIO::initialize ( )

virtual

Initialize the Controller.

Returns: Result code

Definition at line 25 of file BroadcomGPIO.cpp.

References Memory::Device, GPIOBase, IOError, m_io, IO::map(), PAGESIZE, Memory::Readable, Success, IO::Success, Memory::User, and Memory::Writable.

◆ setAltFunction()

BroadcomGPIO::Result BroadcomGPIO::setAltFunction	(	Size	pin,
		uint	function
	)

virtual

Set alternate function.

Parameters

pin	Pin number to set.
function	Alternate function number to set.

Returns: Result code.

Definition at line 35 of file BroadcomGPIO.cpp.

References FunctionSelect0, m_io, ARMIO::set(), and Success.

Field Documentation

◆ GPIOBase

const Address BroadcomGPIO::GPIOBase = 0x200000

staticprivate

Definition at line 42 of file BroadcomGPIO.h.

Referenced by initialize().

◆ m_io

Arch::IO BroadcomGPIO::m_io

private

I/O instance.

Definition at line 106 of file BroadcomGPIO.h.

Referenced by initialize(), and setAltFunction().

The documentation for this class was generated from the following files:

lib/libarch/arm/broadcom/BroadcomGPIO.h
lib/libarch/arm/broadcom/BroadcomGPIO.cpp

Public Types

Public Member Functions

Private Types

Private Attributes

Static Private Attributes