Fast Pin I/O

Classes
class	DigitalPin< PinNumber >
	Fast digital port I/O. More...
class	pin_map_t
	struct for mapping digital pins More...

Functions
static void	badPinCheck (uint8_t pin)
void	badPinNumber (void)
static void	fastBitWriteSafe (volatile uint8_t *address, uint8_t bit, bool level)
static bool	fastDigitalRead (uint8_t pin)
static void	fastDigitalToggle (uint8_t pin)
static void	fastDigitalWrite (uint8_t pin, bool level)
static void	fastPinConfig (uint8_t pin, bool mode, bool level)
static void	fastPinMode (uint8_t pin, bool mode)

Variables
static const uint8_t	digitalPinCount = sizeof(pinMap)/sizeof(pin_map_t)

Detailed Description

Fast Digital I/O functions and template class.

Function Documentation

static void badPinCheck ( uint8_t  pin )

inlinestatic

Check for valid pin number

Parameters

[in]

pin

Number of pin to be checked.

void badPinNumber

(

void

)

generate bad pin number error

static void fastBitWriteSafe ( volatile uint8_t *  address, uint8_t  bit, bool  level  )

inlinestatic

fast write helper

Parameters

[in]	address	I/O register address
[in]	bit	bit number to write
[in]	level	value for bit

static bool fastDigitalRead ( uint8_t  pin )

inlinestatic

read pin value

Parameters

[in]

pin

Arduino pin number

Returns

value read

static void fastDigitalToggle ( uint8_t  pin )

inlinestatic

toggle a pin

Parameters

[in]

pin

Arduino pin number

If the pin is in output mode toggle the pin level. If the pin is in input mode toggle the state of the 20K pull-up.

static void fastDigitalWrite ( uint8_t  pin, bool  level  )

inlinestatic

Set pin value

Parameters

[in]	pin	Arduino pin number
[in]	level	value to write

static void fastPinConfig ( uint8_t  pin, bool  mode, bool  level  )

inlinestatic

set pin configuration

Parameters

[in]	pin	Arduino pin number
[in]	mode	If true set output mode else input mode
[in]	level	If mode is output, set level high/low. If mode is input, enable or disable the pin's 20K pull-up.

static void fastPinMode ( uint8_t  pin, bool  mode  )

inlinestatic

set pin mode

Parameters

[in]	pin	Arduino pin number
[in]	mode	if true set output mode else input mode

fastPinMode does not enable or disable the 20K pull-up for input mode.

Variable Documentation

const uint8_t digitalPinCount = sizeof(pinMap)/sizeof(pin_map_t)

static

count of pins