I/O Ports (r_ioport)

Functions
fsp_err_t	R_IOPORT_Open (ioport_ctrl_t *const p_ctrl, const ioport_cfg_t *p_cfg)
fsp_err_t	R_IOPORT_Close (ioport_ctrl_t *const p_ctrl)
fsp_err_t	R_IOPORT_PinsCfg (ioport_ctrl_t *const p_ctrl, const ioport_cfg_t *p_cfg)
fsp_err_t	R_IOPORT_PinCfg (ioport_ctrl_t *const p_ctrl, bsp_io_port_pin_t pin, uint32_t cfg)
fsp_err_t	R_IOPORT_PinEventInputRead (ioport_ctrl_t *const p_ctrl, bsp_io_port_pin_t pin, bsp_io_level_t *p_pin_event)
fsp_err_t	R_IOPORT_PinEventOutputWrite (ioport_ctrl_t *const p_ctrl, bsp_io_port_pin_t pin, bsp_io_level_t pin_value)
fsp_err_t	R_IOPORT_PinRead (ioport_ctrl_t *const p_ctrl, bsp_io_port_pin_t pin, bsp_io_level_t *p_pin_value)
fsp_err_t	R_IOPORT_PinWrite (ioport_ctrl_t *const p_ctrl, bsp_io_port_pin_t pin, bsp_io_level_t level)
fsp_err_t	R_IOPORT_PortDirectionSet (ioport_ctrl_t *const p_ctrl, bsp_io_port_t port, ioport_size_t direction_values, ioport_size_t mask)
fsp_err_t	R_IOPORT_PortEventInputRead (ioport_ctrl_t *const p_ctrl, bsp_io_port_t port, ioport_size_t *event_data)
fsp_err_t	R_IOPORT_PortEventOutputWrite (ioport_ctrl_t *const p_ctrl, bsp_io_port_t port, ioport_size_t event_data, ioport_size_t mask_value)
fsp_err_t	R_IOPORT_PortRead (ioport_ctrl_t *const p_ctrl, bsp_io_port_t port, ioport_size_t *p_port_value)
fsp_err_t	R_IOPORT_PortWrite (ioport_ctrl_t *const p_ctrl, bsp_io_port_t port, ioport_size_t value, ioport_size_t mask)

Detailed Description

Driver for the I/O Ports peripheral on RZ MPUs. This module implements the I/O Port Interface.

Overview

The I/O port pins operate as general I/O port pins, I/O pins for peripheral modules, interrupt input pins, analog I/O, or bus control pins.

Features

The IOPORT HAL module can configure the following pin settings:

• Pin direction (Hi-Z, Input, Output, Output (Input enable))
• Default output state
• Pull-up/Down (No Pull-Up/Down, Pull-Up, Pull-Down)
• Drive strength
• Whether the pin is to be used as an IRQ pin (as peripheral connection)
• Whether the pin is to be used as an TINT pin
• Peripheral connection
• Slew rate setting (Slow, Fast）

The module also provides the following functionality:

• Read/write GPIO pins/ports
• Select operation voltage of SD, QSPI and ETHER.
• Select ETHER operation mode.
• Enable / Disable noise filter and set noise filter number and noise filter clock.

Configuration

The I/O PORT HAL module must be configured by the user for the desired operation. The operating state of an I/O pin can be set via the RZ Configuraton tool. When the project is built a pin configuration file is created. The BSP will automatically configure the MPU IO ports accordingly at startup using the same API functions mentioned in this document.

Build Time Configurations for r_ioport

The following build time configurations are defined in fsp_cfg/r_ioport_cfg.h:

Configuration	Options	Default	Description
Parameter Checking	Default (BSP) Enabled Disabled	Default (BSP)	If selected code for parameter checking is included in the build.

Configurations for System > I/O Port (r_ioport)

This module can be added to the Stacks tab via New Stack > System > I/O Port (r_ioport).

Configuration	Options	Default	Description
Name	Name must be a valid C symbol	g_ioport	Module name.
Pin Configuration Name	Name must be a valid C symbol	g_bsp_pin_cfg	Name for pin configuration structure

Clock Configuration

The I/O PORT HAL module does not require a specific clock configuration.

Pin Configuration

The IOPORT module is used for configuring pins.

Usage Notes

Examples

Basic Example

This is a basic example of minimal use of the IOPORT in an application.

void basic_example ()
{
    bsp_io_level_t readLevel;
    fsp_err_t      err;

    /* Initialize the IOPORT module and configure the pins
     * Note: The default pin configuration name in the RZ Configuraton tool is g_bsp_pin_cfg */
    err = R_IOPORT_Open(&g_ioport_ctrl, &g_bsp_pin_cfg);

    /* Handle any errors. This function should be defined by the user. */
    handle_error(err);

    /* Call R_IOPORT_PinsCfg if the configuration was not part of initial configurations made in open */
    err = R_IOPORT_PinsCfg(&g_ioport_ctrl, &g_runtime_pin_cfg);
    handle_error(err);

    /* Set Pin 00 of Port 01 to High */
    err = R_IOPORT_PinWrite(&g_ioport_ctrl, BSP_IO_PORT_01_PIN_00, BSP_IO_LEVEL_HIGH);
    handle_error(err);

    /* Read Pin 00 of Port 01 */
    err = R_IOPORT_PinRead(&g_ioport_ctrl, BSP_IO_PORT_01_PIN_00, &readLevel);
    handle_error(err);
}

Blinky Example

This example uses IOPORT to configure and toggle a pin to blink an LED.

#define DELAY_TIME    (100)

void blinky_example ()
{
    fsp_err_t err;

    /* Initialize the IOPORT module and configure the pins */
    err = R_IOPORT_Open(&g_ioport_ctrl, &g_bsp_pin_cfg);

    /* Handle any errors. This function should be defined by the user. */
    handle_error(err);

    /* Configure Pin as output
     * Call the R_IOPORT_PinCfg if the configuration was not part of initial configurations made in open */
    err = R_IOPORT_PinCfg(&g_ioport_ctrl, BSP_IO_PORT_01_PIN_00, BSP_IO_DIRECTION_OUTPUT);
    handle_error(err);

    bsp_io_level_t level = BSP_IO_LEVEL_LOW;
    while (1)
    {
        /* Determine the next state of the LEDs */
        if (BSP_IO_LEVEL_LOW == level)
        {
            level = BSP_IO_LEVEL_HIGH;
        }
        else
        {
            level = BSP_IO_LEVEL_LOW;
        }

        /* Update LED of PMOD board connected to PMOD0 of RZ/A3UL SMARC board */
        err = R_IOPORT_PinWrite(&g_ioport_ctrl, BSP_IO_PORT_01_PIN_00, level);
        handle_error(err);

        /* Delay */
        R_BSP_SoftwareDelay(DELAY_TIME, BSP_DELAY_UNITS_MILLISECONDS);
    }
}

Data Structures
struct	ioport_instance_ctrl_t
struct	ioport_event_single_t
struct	ioport_event_group_output_t
struct	ioport_event_group_input_t
struct	ioport_extend_cfg_t

Enumerations
enum	ioport_peripheral_t
enum	ioport_cfg_options_t
enum	ioport_event_pin_selection_t
enum	ioport_event_output_operation_t
enum	ioport_event_control_t
enum	ioport_event_direction_t
enum	ioport_event_detection_t
enum	ioport_event_initial_buffer_value_t

---

Data Structure Documentation

ioport_instance_ctrl_t

struct ioport_instance_ctrl_t

IOPORT private control block. DO NOT MODIFY. Initialization occurs when R_IOPORT_Open() is called.

ioport_event_single_t

struct ioport_event_single_t

Single port configuration

Note

Event link must be configured by the ELC

Data Fields
ioport_event_control_t	event_control	Event link control for single port.
ioport_event_direction_t	direction	Event direction for single port.
uint16_t	port_num	Port number specified to single port.
ioport_event_output_operation_t	operation	Single port operation select.
ioport_event_detection_t	edge_detection	Edge detection select.

ioport_event_group_output_t

struct ioport_event_group_output_t

Output port group configuration

Note

Event link must be configured by the ELC

Data Fields
uint8_t	pin_select	Port number specified to output port group.
ioport_event_output_operation_t	operation	Port group operation select.

ioport_event_group_input_t

struct ioport_event_group_input_t

Input port group configuration

Note

Event link must be configured by the ELC

Data Fields
ioport_event_control_t	event_control	Event link control for input port group.
ioport_event_detection_t	edge_detection	Edge detection select.
ioport_event_control_t	overwrite_control	Buffer register overwrite control.
uint8_t	pin_select	Port number specified to input port group.
uint8_t	buffer_init_value	Buffer register initial value.

ioport_extend_cfg_t

struct ioport_extend_cfg_t

IOPORT extended configuration for event link function

Note

Event link must be configured by the ELC

Data Fields
ioport_event_group_output_t const *	p_port_group_output_cfg	Pointer to output port group configuration.
ioport_event_group_input_t const *	p_port_group_input_cfg	Pointer to input port group configuration.
ioport_event_single_t const *	p_single_port_cfg	Pointer to single input port configuration.

Enumeration Type Documentation

ioport_peripheral_t

enum ioport_peripheral_t

Superset of all peripheral functions.

Enumerator
IOPORT_PERIPHERAL_MODE0	Pin will function as a Mode0 peripheral pin
IOPORT_PERIPHERAL_MODE1	Pin will function as a Mode1 peripheral pin
IOPORT_PERIPHERAL_MODE2	Pin will function as a Mode2 peripheral pin
IOPORT_PERIPHERAL_MODE3	Pin will function as a Mode3 peripheral pin
IOPORT_PERIPHERAL_MODE4	Pin will function as a Mode4 peripheral pin
IOPORT_PERIPHERAL_MODE5	Pin will function as a Mode5 peripheral pin
IOPORT_PERIPHERAL_MODE6	Pin will function as a Mode6 peripheral pin
IOPORT_PERIPHERAL_MODE7	Pin will function as a Mode7 peripheral pin
IOPORT_PERIPHERAL_MODE8	Pin will function as a Mode8 peripheral pin
IOPORT_PERIPHERAL_MODE9	Pin will function as a Mode9 peripheral pin
IOPORT_PERIPHERAL_MODE10	Pin will function as a Mode10 peripheral pin
IOPORT_PERIPHERAL_MODE11	Pin will function as a Mode11 peripheral pin
IOPORT_PERIPHERAL_MODE12	Pin will function as a Mode12 peripheral pin
IOPORT_PERIPHERAL_MODE13	Pin will function as a Mode13 peripheral pin
IOPORT_PERIPHERAL_MODE14	Pin will function as a Mode14 peripheral pin
IOPORT_PERIPHERAL_MODE15	Pin will function as a Mode15 peripheral pin

ioport_cfg_options_t

enum ioport_cfg_options_t

Options to configure pin functions

Enumerator
IOPORT_CFG_PORT_DIRECTION_HIZ	Sets the pin direction to Hi-Z (default)
IOPORT_CFG_PORT_DIRECTION_INPUT	Sets the pin direction to input.
IOPORT_CFG_PORT_DIRECTION_OUTPUT	Sets the pin direction to output (input disable)
IOPORT_CFG_PORT_DIRECTION_OUTPUT_INPUT	Sets the pin direction to output (input enable)
IOPORT_CFG_PORT_OUTPUT_LOW	Sets the pin level to low.
IOPORT_CFG_PORT_OUTPUT_HIGH	Sets the pin level to high.
IOPORT_CFG_PULLUP_PULLDOWN_DISABLE	Disable the pin's internal pull-up and pull-down.
IOPORT_CFG_PULLUP_ENABLE	Enables the pin's internal pull-up.
IOPORT_CFG_PULLDOWN_ENABLE	Enables the pin's internal pull-down.
IOPORT_CFG_NOD_DISABLE	Disable the pin's N-ch open-drain.
IOPORT_CFG_NOD_ENABLE	Enables the pin's N-ch open-drain.
IOPORT_CFG_SCHMITT_DISABLE	Disable the pin's Schmitt-trigger input.
IOPORT_CFG_SCHMITT_ENABLE	Enables the pin's Schmitt-trigger input.
IOPORT_CFG_DRIVE_B00	Sets the IOLH register value to b'00.
IOPORT_CFG_DRIVE_B01	Sets the IOLH register value to b'01.
IOPORT_CFG_DRIVE_B10	Sets the IOLH register value to b'10.
IOPORT_CFG_DRIVE_B11	Sets the IOLH register value to b'11.
IOPORT_CFG_TINT_DISABLE	Disable IRQ functionality for a pin.
IOPORT_CFG_TINT_ENABLE	Sets pin as an IRQ pin.
IOPORT_CFG_SLEW_RATE_SLOW	Sets the pin slew-rate to slow.
IOPORT_CFG_SLEW_RATE_FAST	Sets the pin slew-rate to fast.
IOPORT_CFG_SPECIAL_PURPOSE_PORT_INPUT_DISABLE	Disable input the pin of special purpose port.
IOPORT_CFG_SPECIAL_PURPOSE_PORT_INPUT_ENABLE	Sets the pin of special purpose port to input.
IOPORT_CFG_NOISE_FILTER_OFF	Noise filter disable.
IOPORT_CFG_NOISE_FILTER_ON	Noise filter enable.
IOPORT_CFG_NOISE_FILTER_NUM_4STAGE	Sets the pin noise filter to 4-stage filter.
IOPORT_CFG_NOISE_FILTER_NUM_8STAGE	Sets the pin noise filter to 8-stage filter.
IOPORT_CFG_NOISE_FILTER_NUM_12STAGE	Sets the pin noise filter to 12-stage filter.
IOPORT_CFG_NOISE_FILTER_NUM_16STAGE	Sets the pin noise filter to 16-stage filter.
IOPORT_CFG_NOISE_FILTER_DIVIDED_B00	Sets the FILCLKSEL register value to b'00.
IOPORT_CFG_NOISE_FILTER_DIVIDED_B01	Sets the FILCLKSEL register value to b'01.
IOPORT_CFG_NOISE_FILTER_DIVIDED_B10	Sets the FILCLKSEL register value to b'10.
IOPORT_CFG_NOISE_FILTER_DIVIDED_B11	Sets the FILCLKSEL register value to b'11.
IOPORT_CFG_PERIPHERAL_PIN	Enables pin to operate as a peripheral pin.

ioport_event_pin_selection_t

enum ioport_event_pin_selection_t

Pin selection for port group

Note

Event link must be configured by the ELC

Enumerator
IOPORT_EVENT_PIN_SELECTION_NONE	No pin selection for port group.
IOPORT_EVENT_PIN_SELECTION_PIN_0	Select pin 0 to port group.
IOPORT_EVENT_PIN_SELECTION_PIN_1	Select pin 1 to port group.
IOPORT_EVENT_PIN_SELECTION_PIN_2	Select pin 2 to port group.
IOPORT_EVENT_PIN_SELECTION_PIN_3	Select pin 3 to port group.
IOPORT_EVENT_PIN_SELECTION_PIN_4	Select pin 4 to port group.
IOPORT_EVENT_PIN_SELECTION_PIN_5	Select pin 5 to port group.
IOPORT_EVENT_PIN_SELECTION_PIN_6	Select pin 6 to port group.
IOPORT_EVENT_PIN_SELECTION_PIN_7	Select pin 7 to port group.

ioport_event_output_operation_t

enum ioport_event_output_operation_t

Port group operation

Note

Event link must be configured by the ELC

Enumerator
IOPORT_EVENT_OUTPUT_OPERATION_LOW	Set Low output to output operation.
IOPORT_EVENT_OUTPUT_OPERATION_HIGH	Set High output to output operation.
IOPORT_EVENT_OUTPUT_OPERATION_TOGGLE	Set toggle output to output operation.
IOPORT_EVENT_OUTPUT_OPERATION_BUFFER	Set buffer value output to output operation.

ioport_event_control_t

enum ioport_event_control_t

Input port group event control

Note

Event link must be configured by the ELC

Enumerator
IOPORT_EVENT_CONTROL_DISABLE	Disable function related with event link.
IOPORT_EVENT_CONTROL_ENABLE	Enable function related with event link.

ioport_event_direction_t

enum ioport_event_direction_t

Single port event direction

Note

Event link must be configured by the ELC

Enumerator
IOPORT_EVENT_DIRECTION_OUTPUT	Set output direction to single port.
IOPORT_EVENT_DIRECTION_INPUT	Set input direction to single port.

ioport_event_detection_t

enum ioport_event_detection_t

Input event edge detection

Note

Event link must be configured by the ELC

Enumerator
IOPORT_EVENT_DETECTION_RISING_EDGE	Set rising edge to event detection for input event.
IOPORT_EVENT_DETECTION_FALLING_EDGE	Set falling edge to event detection for input event.
IOPORT_EVENT_DETECTION_BOTH_EGDE	Set both edges to event detection for input event.

ioport_event_initial_buffer_value_t

enum ioport_event_initial_buffer_value_t

Initial value for buffer register

Note

Event link must be configured by the ELC

Enumerator
IOPORT_EVENT_INITIAL_BUFFER_VALUE_LOW	Set low to initial value of buffer register for input port group.
IOPORT_EVENT_INITIAL_BUFFER_VALUE_HIGH	Set high to initial value of buffer register for input port group.

Function Documentation

R_IOPORT_Open()

fsp_err_t R_IOPORT_Open	(	ioport_ctrl_t *const	p_ctrl,
		const ioport_cfg_t *	p_cfg
	)

Initializes internal driver data, then calls pin configuration function to configure pins.

Return values

FSP_SUCCESS	Pin configuration data written to PFS register(s)
FSP_ERR_ASSERTION	NULL pointer
FSP_ERR_ALREADY_OPEN	Module is already open.

R_IOPORT_Close()

fsp_err_t R_IOPORT_Close

(

ioport_ctrl_t *const

p_ctrl

)

Resets IOPORT registers. Implements ioport_api_t::close

Return values

FSP_SUCCESS	The IOPORT was successfully uninitialized
FSP_ERR_ASSERTION	p_ctrl was NULL
FSP_ERR_NOT_OPEN	The module has not been opened

R_IOPORT_PinsCfg()

fsp_err_t R_IOPORT_PinsCfg	(	ioport_ctrl_t *const	p_ctrl,
		const ioport_cfg_t *	p_cfg
	)

Configures the functions of multiple pins by loading configuration data into each registers. Implements ioport_api_t::pinsCfg.

This function initializes the supplied list of each registers with the supplied values. This data define in pin_data.c. Different pin configurations can be loaded for different situations such as low power modes and testing.

Return values

FSP_SUCCESS	Pin configuration data written to each registers
FSP_ERR_NOT_OPEN	The module has not been opened
FSP_ERR_ASSERTION	NULL pointer

R_IOPORT_PinCfg()

fsp_err_t R_IOPORT_PinCfg	(	ioport_ctrl_t *const	p_ctrl,
		bsp_io_port_pin_t	pin,
		uint32_t	cfg
	)

Configures the settings of a pin. Implements ioport_api_t::pinCfg.

Return values

FSP_SUCCESS	Pin configured
FSP_ERR_NOT_OPEN	The module has not been opened
FSP_ERR_ASSERTION	NULL pointer

Note

This function is re-entrant for different pins. This function will change the configuration of the pin with the new configuration. For example it is not possible with this function to change the drive strength of a pin while leaving all the other pin settings unchanged. To achieve this the original settings with the required change will need to be written using this function.

R_IOPORT_PinEventInputRead()

fsp_err_t R_IOPORT_PinEventInputRead	(	ioport_ctrl_t *const	p_ctrl,
		bsp_io_port_pin_t	pin,
		bsp_io_level_t *	p_pin_event
	)

Reads the value of the event input data of a specific pin. Implements ioport_api_t::pinEventInputRead.

The pin event data is captured in response to a trigger from the ELC. This function enables this data to be read. Using the event system allows the captured data to be stored when it occurs and then read back at a later time.

Return values

FSP_SUCCESS	Pin read
FSP_ERR_ASSERTION	NULL pointer
FSP_ERR_NOT_OPEN	The module has not been opened
FSP_ERR_INVALID_ARGUMENT	Port is not valid ELC PORT.
FSP_ERR_UNSUPPORTED	The function is not supported on the device which doesn't support ELC.

R_IOPORT_PinEventOutputWrite()

fsp_err_t R_IOPORT_PinEventOutputWrite	(	ioport_ctrl_t *const	p_ctrl,
		bsp_io_port_pin_t	pin,
		bsp_io_level_t	pin_value
	)

This function writes the event output data value to a pin. Implements ioport_api_t::pinEventOutputWrite.

Using the event system enables a pin state to be stored by this function in advance of being output on the pin. The output to the pin will occur when the ELC event occurs.

Return values

FSP_SUCCESS	Pin event data written
FSP_ERR_INVALID_ARGUMENT	Port or Pin or value not valid
FSP_ERR_NOT_OPEN	The module has not been opened
FSP_ERR_ASSERTION	NULL pointer
FSP_ERR_UNSUPPORTED	The function is not supported on the device which doesn't support ELC.

R_IOPORT_PinRead()

fsp_err_t R_IOPORT_PinRead	(	ioport_ctrl_t *const	p_ctrl,
		bsp_io_port_pin_t	pin,
		bsp_io_level_t *	p_pin_value
	)

Reads the level on a pin. Implements ioport_api_t::pinRead.

Return values

FSP_SUCCESS	Pin read
FSP_ERR_ASSERTION	NULL pointer
FSP_ERR_NOT_OPEN	The module has not been opened

Note

This function is re-entrant for different pins.

R_IOPORT_PinWrite()

fsp_err_t R_IOPORT_PinWrite	(	ioport_ctrl_t *const	p_ctrl,
		bsp_io_port_pin_t	pin,
		bsp_io_level_t	level
	)

Sets a pin's output either high or low. Implements ioport_api_t::pinWrite.

Return values

FSP_SUCCESS	Pin written to
FSP_ERR_INVALID_ARGUMENT	The pin and/or level not valid
FSP_ERR_NOT_OPEN	The module has not been opene
FSP_ERR_ASSERTION	NULL pointerd

Note

This function is re-entrant for different pins.

R_IOPORT_PortDirectionSet()

fsp_err_t R_IOPORT_PortDirectionSet	(	ioport_ctrl_t *const	p_ctrl,
		bsp_io_port_t	port,
		ioport_size_t	direction_values,
		ioport_size_t	mask
	)

Sets the direction of individual pins on a port. Implements ioport_api_t::portDirectionSet().

Multiple pins on a port can be set to inputs or outputs at once. Each bit in the mask parameter corresponds to a pin on the port. For example, bit[9:8] corresponds to pin 4, bit[7:6] to pin 3, and so on. If bits are set to b'11 then the corresponding pin will be changed to an input or an output or Hi-Z as specified by the direction values. If a mask bits are set to b'00 then the direction of the pin will not be changed.

Return values

FSP_SUCCESS	Port direction updated
FSP_ERR_INVALID_ARGUMENT	The port and/or mask not valid
FSP_ERR_NOT_OPEN	The module has not been opened
FSP_ERR_ASSERTION	NULL pointer

Note

This function is re-entrant for different ports.

R_IOPORT_PortEventInputRead()

fsp_err_t R_IOPORT_PortEventInputRead	(	ioport_ctrl_t *const	p_ctrl,
		bsp_io_port_t	port,
		ioport_size_t *	p_event_data
	)

Reads the value of the event input data. Implements ioport_api_t::portEventInputRead().

The event input data for the port will be read. Each bit in the returned value corresponds to a pin on the port. For example, bit 7 corresponds to pin 7, bit 6 to pin 6, and so on.

The port event data is captured in response to a trigger from the ELC. This function enables this data to be read. Using the event system allows the captured data to be stored when it occurs and then read back at a later time.

Return values

FSP_SUCCESS	Port read
FSP_ERR_INVALID_ARGUMENT	Port not a valid ELC port
FSP_ERR_ASSERTION	NULL pointer
FSP_ERR_NOT_OPEN	The module has not been opened
FSP_ERR_UNSUPPORTED	The function is not supported on the device which doesn't support ELC.

R_IOPORT_PortEventOutputWrite()

fsp_err_t R_IOPORT_PortEventOutputWrite	(	ioport_ctrl_t *const	p_ctrl,
		bsp_io_port_t	port,
		ioport_size_t	event_data,
		ioport_size_t	mask_value
	)

This function writes the set and reset event output data for a port. Implements ioport_api_t::portEventOutputWrite.

Using the event system enables a port state to be stored by this function in advance of being output on the port. The output to the port will occur when the ELC event occurs.

The input value will be written to the specified port when an ELC event configured for that port occurs. Each bit in the value parameter corresponds to a bit on the port. For example, bit 7 corresponds to pin 7, bit 6 to pin 6, and so on. Each bit in the mask parameter corresponds to a pin on the port.

Return values

FSP_SUCCESS	Port event data written
FSP_ERR_INVALID_ARGUMENT	Port or Mask not valid
FSP_ERR_NOT_OPEN	The module has not been opened
FSP_ERR_ASSERTION	NULL pointer
FSP_ERR_UNSUPPORTED	The function is not supported on the device which doesn't support ELC.

R_IOPORT_PortRead()

fsp_err_t R_IOPORT_PortRead	(	ioport_ctrl_t *const	p_ctrl,
		bsp_io_port_t	port,
		ioport_size_t *	p_port_value
	)

Reads the value on an IO port. Implements ioport_api_t::portRead.

The specified port will be read, and the levels for all the pins will be returned. Each bit in the returned value corresponds to a pin on the port. For example, bit 4 corresponds to pin 4, bit 3 to pin 3, and so on.

Return values

FSP_SUCCESS	Port read
FSP_ERR_ASSERTION	NULL pointer
FSP_ERR_NOT_OPEN	The module has not been opened

Note

This function is re-entrant for different ports.

R_IOPORT_PortWrite()

fsp_err_t R_IOPORT_PortWrite	(	ioport_ctrl_t *const	p_ctrl,
		bsp_io_port_t	port,
		ioport_size_t	value,
		ioport_size_t	mask
	)

Writes to multiple pins on a port. Implements ioport_api_t::portWrite.

The input value will be written to the specified port. Each bit in the value parameter corresponds to a bit on the port. For example, bit 4 corresponds to pin 4, bit 3 to pin 3, and so on. Each bit in the mask parameter corresponds to a pin on the port.

Only the bits with the corresponding bit in the mask value set will be updated. For example, value = 0xFFFF, mask = 0x0003 results in only bits 0 and 1 being updated.

Return values

FSP_SUCCESS	Port written to
FSP_ERR_INVALID_ARGUMENT	The port and/or mask not valid
FSP_ERR_NOT_OPEN	The module has not been opened
FSP_ERR_ASSERTION	NULL pointerd

Note

This function is re-entrant for different ports.