Per-port IOPORT register window. More...

#include <ra8_port_regs.h>

Data Fields
volatile uint32_t	PCNTR1
	PCNTR1 – { PODR[31:16], PDR[15:0] }.
volatile uint32_t	PCNTR2
	PCNTR2 – { EIDR[31:16], PIDR[15:0] } (read-only).
volatile uint32_t	PCNTR3
	PCNTR3 – { PORR[31:16], POSR[15:0] } (write-only).
volatile uint32_t	PCNTR4
	PCNTR4 – { EORR[31:16], EOSR[15:0] }.

Detailed Description

Per-port IOPORT register window.

Four 32-bit registers back-to-back. The full 32-byte port slot leaves 16 bytes of reserved space after PCNTR4; we only model the used prefix.

Invariant: sizeof(r_port_regs_t) == 16.

Definition at line 100 of file ra8_port_regs.h.

Field Documentation

◆ PCNTR1

volatile uint32_t r_port_regs_t::PCNTR1

PCNTR1 – { PODR[31:16], PDR[15:0] }.

Write the low half to configure direction (0 = input, 1 = output), write the high half to drive the output latch.

Definition at line 107 of file ra8_port_regs.h.

Referenced by ra8_gpio_toggle(), and ra8_pcntr_set_output().

◆ PCNTR2

volatile uint32_t r_port_regs_t::PCNTR2

PCNTR2 – { EIDR[31:16], PIDR[15:0] } (read-only).

Low half reads live pin state. High half is event-input data, used when the port is routed through the ELC event matrix.

Definition at line 114 of file ra8_port_regs.h.

Referenced by cam_read_probe_data(), cam_read_probe_sync(), internal_ra8_epaper_wait_ready(), ra8_gpio_read(), and ra8_pcntr_read().

◆ PCNTR3

volatile uint32_t r_port_regs_t::PCNTR3

PCNTR3 – { PORR[31:16], POSR[15:0] } (write-only).

Atomic set / atomic clear. Writing a 1 bit to POSR drives the pin high; writing a 1 bit to PORR drives it low; zero bits are ignored. This is race-free and should be used in preference to PODR RMW.

Definition at line 123 of file ra8_port_regs.h.

Referenced by ra8_gpio_toggle(), and ra8_gpio_write().

◆ PCNTR4

volatile uint32_t r_port_regs_t::PCNTR4

PCNTR4 – { EORR[31:16], EOSR[15:0] }.

Event-driven output set / reset. Used with the ELC.

Definition at line 129 of file ra8_port_regs.h.

The documentation for this struct was generated from the following file:

libs/ra8_hal/inc/ra8_port_regs.h