User`s manual

RX62N Group, RX621 Group 4. Library Reference

3) R_IO_PORT_ModifyControl

Synopsis

Modify an I/O port’s control registers.

Prototype

bool R_IO_PORT_ModifyControl(

uint16_t data1,

// Port or port pin selection

uint8_t data2,

// Control register and logical operation selection

uint8_t data3

// Modification value

);

Description

Modifying the operation of an I/O port or I/O port pin.

[data1]

Use either one of the following definition values (from §4.2.3).

•

One port definition or

•

One port pin definition.

[data2]

Select the register to be modified and the logical operation, using "|" to separate the selections.

•

The control register to be modified.

PDL_IO_PORT_DIRECTION or

Data direction register.

PDL_IO_PORT_INPUT_BUFFER or

Input buffer control register.

PDL_IO_PORT_PULL_UP or

Pull-up MOS control register. Applicable for ports 9 to E

and G.

PDL_IO_PORT_TYPE

Open-drain control register. Applicable for ports 0 to 3

and C.

•

The logical operation to be applied to the control register.

PDL_IO_PORT_AND or

PDL_IO_PORT_OR or

PDL_IO_PORT_XOR

Select between AND (&), OR (|) or Exclusive-OR (^).

[data3]

The value to be used for the modification; Between 0x00 and 0xFF for a port, 0 or 1 for a pin.

Return value

True if all parameters are valid and exclusive; otherwise false.