High-Speed Analog Comparator (ACMPHS) register layout for the RA8D2. More...

#include <stdint.h>
#include "ra8_attributes.h"

Include dependency graph for ra8_acmphs_regs.h:

This graph shows which files directly or indirectly include this file:

Data Structures
struct	r_acmphs_regs_t
	Per-channel ACMPHS register window. More...

Enumerations
enum	ra8_acmphs_addr_t : uintptr_t { k_ra8_acmphs0_base_addr = 0x40236000UL }
	Memory-mapped base addresses for ACMPHS. More...
enum	ra8_acmphs_limits_t : uint16_t { k_ra8_acmphs_channel_count = 6U , k_ra8_acmphs_channel_stride = 0x100U , k_ra8_acmphs_reserved_mid = 47U }
	Channel count and stride. More...
enum	ra8_cmpctl_bit_t : uint8_t { k_ra8_acmphs_bit_cinv = 0U , k_ra8_acmphs_bit_coe = 1U , k_ra8_acmphs_bit_csten = 2U , k_ra8_acmphs_bit_ceg0 = 3U , k_ra8_acmphs_bit_ceg1 = 4U , k_ra8_acmphs_bit_cdfs0 = 5U , k_ra8_acmphs_bit_cdfs1 = 6U , k_ra8_acmphs_bit_hcmpon = 7U }
	CMPCTL control-bit positions (verified against FSP R_ACMPHS0_CMPCTL_b, R7KA8D2KF_core0.h lines 3874-3884). More...
enum	ra8_acmphs_mask_t : uint8_t { k_ra8_acmphs_mask_cinv = 0x01U , k_ra8_acmphs_mask_coe = 0x02U , k_ra8_acmphs_mask_csten = 0x04U , k_ra8_acmphs_mask_ceg = 0x18U , k_ra8_acmphs_mask_cdfs = 0x60U , k_ra8_acmphs_mask_hcen = 0x80U , k_ra8_acmphs_mask_hcmon = 0x01U }
	CMPCTL bit masks. More...

Functions
static volatile r_acmphs_regs_t *	ra8_acmphs (uint8_t channel)
	Get pointer to ACMPHS channel channel.

Detailed Description

High-Speed Analog Comparator (ACMPHS) register layout for the RA8D2.

The RA8D2 exposes up to six high-speed analog comparator channels (ACMPHS0..ACMPHS5). Each channel has a small independent register window at base 0x40324000 with a 0x100 stride.

Per-channel registers:

Offset	Name	Width	Purpose
0x00	CMPCTL	8	Comparator control (HCMON, HCEN, ...)
0x04	CMPSEL0	8	Plus-input selection
0x08	CMPSEL1	8	Minus-input selection
0x0C	CMPMON	8	Output monitor (read-only)
0x10	CPIOC	8	Output polarity / pin control
0x40	CPINTCTL	8	Interrupt control
0x44	CPMSKCTL	8	Interrupt mask control

Register offsets tracked against HUM Ch 56 "High-Speed Analog Comparator (ACMPHS)" p 3508.

Copyright: Copyright (c) 2026 Brighton Sikarskie SPDX-License-Identifier: MIT

Definition in file ra8_acmphs_regs.h.

Enumeration Type Documentation

◆ ra8_acmphs_addr_t

enum ra8_acmphs_addr_t : uintptr_t

Memory-mapped base addresses for ACMPHS.

Enumerator
k_ra8_acmphs0_base_addr	ACMPHS channel 0 base (FSP R_ACMPHS0_BASE).

Definition at line 44 of file ra8_acmphs_regs.h.

◆ ra8_acmphs_limits_t

enum ra8_acmphs_limits_t : uint16_t

Channel count and stride.

Enumerator
k_ra8_acmphs_channel_count	Channels 0..5 on this package.
k_ra8_acmphs_channel_stride	Bytes between channels.
k_ra8_acmphs_reserved_mid	Reserved gap CPIOC->CPINTCTL.

Definition at line 52 of file ra8_acmphs_regs.h.

◆ ra8_acmphs_mask_t

enum ra8_acmphs_mask_t : uint8_t

CMPCTL bit masks.

Enumerator
k_ra8_acmphs_mask_cinv	CINV bit.
k_ra8_acmphs_mask_coe	COE bit.
k_ra8_acmphs_mask_csten	CSTEN interrupt select.
k_ra8_acmphs_mask_ceg	CEG[1:0] @ [4:3] edge selector.
k_ra8_acmphs_mask_cdfs	CDFS[1:0] @ [6:5] noise filter.
k_ra8_acmphs_mask_hcen	HCMPON operation enable.
k_ra8_acmphs_mask_hcmon	CMPMON.CMPMON: output level read.

Definition at line 78 of file ra8_acmphs_regs.h.

◆ ra8_cmpctl_bit_t

enum ra8_cmpctl_bit_t : uint8_t

CMPCTL control-bit positions (verified against FSP R_ACMPHS0_CMPCTL_b, R7KA8D2KF_core0.h lines 3874-3884).

Enumerator
k_ra8_acmphs_bit_cinv	Output polarity inversion.
k_ra8_acmphs_bit_coe	Output enable (to pin).
k_ra8_acmphs_bit_csten	Interrupt select.
k_ra8_acmphs_bit_ceg0	CEG[1:0] edge selector lo.
k_ra8_acmphs_bit_ceg1	CEG[1:0] edge selector hi.
k_ra8_acmphs_bit_cdfs0	CDFS[1:0] noise filter lo.
k_ra8_acmphs_bit_cdfs1	CDFS[1:0] noise filter hi.
k_ra8_acmphs_bit_hcmpon	Comparator operation enable.

Definition at line 63 of file ra8_acmphs_regs.h.

Function Documentation

◆ ra8_acmphs()

volatile r_acmphs_regs_t * ra8_acmphs ( uint8_t channel )

inlinestatic

Get pointer to ACMPHS channel channel.

Parameters

[in] channel Channel index (0..5).

Returns: Volatile pointer to the channel register block, or nullptr if channel is out of range.

Definition at line 123 of file ra8_acmphs_regs.h.

References k_ra8_acmphs0_base_addr, k_ra8_acmphs_channel_count, and k_ra8_acmphs_channel_stride.

Referenced by internal_reset_channel(), ra8_acmphs_channel_deinit(), ra8_acmphs_channel_enable(), ra8_acmphs_channel_init(), ra8_acmphs_clear_status(), ra8_acmphs_get_status(), ra8_acmphs_read_output(), and ra8_acmphs_set_inputs().

Data Structures

Enumerations

Functions