Padframe

Padframe. More...

Enumerations
enum	pi_pad_func_e
	Pad functions. More...
enum	pi_pad_flags_e
	Pad configuration flags. More...
enum	pi_pad_sleepcfg_flags_e
	Pad sleep configuration flags. More...

Functions
void	pi_pad_set_function (pi_pad_e pad, pi_pad_func_e function)
	Set the function of one pad. More...
void	pi_pad_init (uint32_t pad_values[])
	Set the function of all pads. More...
void	pi_pad_set_configuration (pi_pad_e pad, pi_pad_flags_e cfg)
	Set the configuration for a pin. More...
void	pi_pad_sleepcfg_set (uint32_t sleepcfg[], uint8_t sleep_ena)
	Set the sleep configuration for a set of pins. More...

Description

The padframe driver provides support for controlling PADs.

Enumeration Type Documentation

enum pi_pad_flags_e

Flags are used to configure pad : drive strength, pull activation.

Enumerator
PI_PAD_PULL_DISABLE	Disable pull.
PI_PAD_PULL_ENABLE	Enable pull.
PI_PAD_DS_LOW	Low drive strength.
PI_PAD_DS_HIGH	High drive strength.

enum pi_pad_func_e

This is used to identify the function for each pad.

Enumerator
PI_PAD_FUNC0	Alternate func0, default func.
PI_PAD_FUNC1	Alternate func1.
PI_PAD_FUNC2	Alternate func2, pads as GPIOs.
PI_PAD_FUNC3	Alternate func3.

enum pi_pad_sleepcfg_flags_e

Flags are used to configure pad : direction, active state.

Enumerator
PI_PAD_SLEEPCFG_INPUT	Pad is an input.
PI_PAD_SLEEPCFG_OUTPUT	Pad is an output.
PI_PAD_SLEEPCFG_ACTIVE_LOW	Pad is active low.
PI_PAD_SLEEPCFG_ACTIVE_HIGH	Pad is active high.

Function Documentation

void pi_pad_init

(

uint32_t

pad_values[]

)

This function can be used to configure the function of all the pads in the case that they support several functions.

Parameters

pad_values

Pad values. This is an array of 32 bit values, with one bit per pad and one 32 bit value per group of 32 pads.

void pi_pad_set_configuration	(	pi_pad_e	pad,
		pi_pad_flags_e	cfg
	)

This function configures the pull activation and drive strength of a given pin.

Parameters

pad	Pad to configure.
cfg	Pad configuration, set of flags.

void pi_pad_set_function	(	pi_pad_e	pad,
		pi_pad_func_e	function
	)

This function can be used to configure the function of the specified pad in the case that it supports several functions.

Parameters

pad	Pad number. See the chip specific configuration for more details.
function	Pad function. See the chip specific configuration for more details.

void pi_pad_sleepcfg_set	(	uint32_t	sleepcfg[],
		uint8_t	sleep_ena
	)

This function configures pads behaviour when microcontroller goes into sleep or deep sleep mode. The array sent to this function should be filled for available pads(cf pi_pad_e), with 2 bits per pad(active state and direction).

Ex : Pad 10 - PI_PAD_18_A43_CAM_PCLK

uint32_t array[3] = {0};

array[PI_PAD_18_A43_CAM_PCLK / 16] |= ((PI_PAD_SLEEPCFG_INPUT | PI_PAD_SLEEPCFG_ACTIVE_HIGH) << PI_PAD_18_A43_CAM_PCLK);

Parameters

sleepcfg	Pads sleep configuration.
sleep_ena	Enable/disable pad sleep mode.