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. More...

virtual Result	initialize ()
	Initialize the Controller. More...

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

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

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

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, IO::Success, 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