USB device-mode data path: pipe queue, DCP control data, SETUP. More...

#include <stdint.h>
#include "ra8_attributes.h"
#include "ra8_check.h"
#include "ra8_err.h"
#include "ra8_log.h"
#include "ra8_usb.h"
#include "ra8_usb_internal.h"
#include "ra8_usb_regs.h"

Include dependency graph for ra8_usb_xfer.c:

Functions
ra8_err_t	ra8_usb_queue_in (ra8_usb_speed_t speed, uint8_t pipe_num, const uint8_t *data, uint16_t len)
	Implementation of ra8_usb_queue_in().
static ra8_err_t	internal_dcp_in_payload (volatile r_usb_regs_t reg, const uint8_t data, uint16_t len)
	Send the EP0 IN data-stage payload as one or more DCP chunks.
static ra8_err_t	internal_dcp_in_zlp (volatile r_usb_regs_t *reg)
	Send a zero-length data stage on the DCP IN endpoint.
ra8_err_t	ra8_usb_dcp_in_data (ra8_usb_speed_t speed, const uint8_t *data, uint16_t len)
	Implementation of ra8_usb_dcp_in_data().
static ra8_err_t	internal_check_queue_out_args (uint8_t pipe_num, const uint8_t out_buf, const uint16_t inout_len)
	Argument validation helper for ra8_usb_queue_out.
ra8_err_t	ra8_usb_queue_out (ra8_usb_speed_t speed, uint8_t pipe_num, uint8_t out_buf, uint16_t inout_len, bool rearm)
	Implementation of ra8_usb_queue_out().
ra8_err_t	ra8_usb_rearm_out_pipe (ra8_usb_speed_t speed, uint8_t pipe_num)
	Implementation of ra8_usb_rearm_out_pipe().
ra8_err_t	ra8_usb_park_out_pipe (ra8_usb_speed_t speed, uint8_t pipe_num)
	Implementation of ra8_usb_park_out_pipe().
ra8_err_t	ra8_usb_read_setup_if_valid (ra8_usb_speed_t speed, ra8_usb_setup_t *out_setup)
	Implementation of ra8_usb_read_setup_if_valid().
ra8_err_t	ra8_usb_read_setup_unconditional (ra8_usb_speed_t speed, ra8_usb_setup_t *out_setup)
	Implementation of ra8_usb_read_setup_unconditional (see header).
ra8_err_t	ra8_usb_control_response (ra8_usb_speed_t speed, bool accept)
	Implementation of ra8_usb_control_response().

Variables
static const char *	s_tag = "USB"
volatile uint32_t	g_dcp_push_count = 0U
volatile uint16_t	g_dcp_dcpctr_pre_push = 0U
volatile uint16_t	g_dcp_dcpctr_post_push = 0U
volatile uint16_t	g_dcp_cfifoctr_pre = 0U
volatile uint16_t	g_dcp_cfifoctr_post = 0U
volatile uint16_t	g_dcp_last_len = 0U
volatile uint8_t	g_dcp_last_err = 0U

Detailed Description

USB device-mode data path: pipe queue, DCP control data, SETUP.

Tag: [Ring 3 / HAL] {World: NS}

Device-mode transfer entry points: ra8_usb_queue_in / ra8_usb_queue_out (pipe FIFO push / drain), the DCP control-IN data stage (ra8_usb_dcp_in_data and its chunk / ZLP helpers), the OUT pipe re-arm / park controls, the SETUP-packet drains (ra8_usb_read_setup_if_valid / ra8_usb_read_setup_unconditional), and ra8_usb_control_response. Split out of ra8_usb.c so every translation unit stays under the 1000-line cap; the shared register and FIFO helpers it calls live in ra8_usb.c (declared in ra8_usb_internal.h). Modelled on FSP r_usb_preg_abs.c / r_usb_plibusbip.c; no FSP source ships in this tree.

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

Since: 0.1.0

Definition in file ra8_usb_xfer.c.

Function Documentation

◆ internal_check_queue_out_args()

ra8_err_t internal_check_queue_out_args	(	uint8_t	pipe_num,
		const uint8_t *	out_buf,
		const uint16_t *	inout_len )

static

Argument validation helper for ra8_usb_queue_out.

Read-only over the buffers; the caller mutates them on success. Marked const so clang-tidy's readability-non-const-parameter is satisfied.

Parameters

[in]	pipe_num	See implementation.
[in]	out_buf	See implementation.
[in]	inout_len	See implementation.

Returns: Result code.

Return values

k_ra8_ok Operation succeeded.

Precondition: Module state is consistent.; Module state is consistent.

Postcondition: Caller-visible state matches the documented contract.; Caller-visible state matches the documented contract.

Note: Not thread-safe unless documented otherwise.

Since: 0.1.0

Definition at line 277 of file ra8_usb_xfer.c.

References k_ra8_err_invalid_arg, k_ra8_err_null_ptr, k_ra8_ok, k_ra8_usb_max_pipe_num, and k_ra8_usb_pipe_max_packet.

Referenced by ra8_usb_queue_out().

◆ internal_dcp_in_payload()

ra8_err_t internal_dcp_in_payload	(	volatile r_usb_regs_t *	reg,
		const uint8_t *	data,
		uint16_t	len )

static

Send the EP0 IN data-stage payload as one or more DCP chunks.

Drives the multi-chunk loop so ra8_usb_dcp_in_data stays under the clang-tidy statement-count threshold. Pushes at most DCPMAXP bytes per iteration via priv_dcp_push_chunk, then raises DCPCTR.PID to BUF after the first successful push. The controller services subsequent IN tokens automatically.

Parameters

[in,out]	reg	Selected DCP register block (CFIFO already pointed at DCP / IN direction by the caller).
[in]	data	Source payload; must hold at least len bytes.
[in]	len	Total payload length in bytes; must be > 0.

Returns: ra8_err_t Error code.

Return values

k_ra8_ok	Payload fully queued; PID set to BUF.
k_ra8_err_hw_timeout	FRDY never asserted for some chunk.

Precondition: reg is non-NULL and CFIFOSEL is already programmed for DCP IN.; data is non-NULL and len > 0.

Postcondition: On success, all len bytes have been queued and DCPCTR.PID == BUF.; On error, DCPCTR.PID is left unchanged from its prior value.

Note: Not thread-safe; caller holds the DCP lock.

Since: 0.1.0

Definition at line 124 of file ra8_usb_xfer.c.

References k_ra8_ok, k_ra8_pid_buf, k_ra8_usb_dcp_max_packet, priv_dcp_pid(), priv_dcp_push_chunk(), RA8_RETURN_ON_ERROR, and s_tag.

Referenced by ra8_usb_dcp_in_data().

◆ internal_dcp_in_zlp()

ra8_err_t internal_dcp_in_zlp ( volatile r_usb_regs_t * reg )

static

Send a zero-length data stage on the DCP IN endpoint.

Waits for FRDY, pulses CFIFOCTR.BVAL on an empty buffer (producing a ZLP on the wire) and raises DCPCTR.PID to BUF. Extracted from ra8_usb_dcp_in_data so the top-level function fits under the clang-tidy statement-count threshold.

Parameters

[in,out] reg Selected DCP register block (CFIFO already pointed at DCP / IN direction by the caller).

Returns: ra8_err_t Error code.

Return values

k_ra8_ok	ZLP queued; PID set to BUF.
k_ra8_err_hw_timeout	FRDY never asserted.

Precondition: reg is non-NULL and CFIFOSEL is already programmed for DCP IN.; USB module clock and power are on.

Postcondition: On success, an empty buffer is queued and DCPCTR.PID == BUF.; On error, DCPCTR.PID is left unchanged from its prior value.

Note: Not thread-safe; caller holds the DCP lock.

Since: 0.1.0

Definition at line 169 of file ra8_usb_xfer.c.

References r_usb_regs_t::CFIFOCTR, k_ra8_fifoctr_bval, k_ra8_ok, k_ra8_pid_buf, priv_dcp_pid(), priv_wait_frdy(), RA8_RETURN_ON_ERROR, and s_tag.

Referenced by ra8_usb_dcp_in_data().

◆ ra8_usb_control_response()

ra8_err_t ra8_usb_control_response	(	ra8_usb_speed_t	speed,
		bool	accept )

nodiscard

Implementation of ra8_usb_control_response().

Issue a control-transfer status response on EP0.

See the public header for the documented contract; this definition implements it.

Parameters

[in]	speed	See implementation.
[in]	accept	See implementation.

Returns: Result code.

Return values

k_ra8_ok Operation succeeded.

Precondition: Module state is consistent.; Module state is consistent.

Postcondition: Caller-visible state matches the documented contract.; Caller-visible state matches the documented contract.

Note: Not thread-safe unless documented otherwise.

Since: 0.1.0

Definition at line 567 of file ra8_usb_xfer.c.

References r_usb_regs_t::DCPCTR, k_ra8_dcpctr_bit_ccpl, k_ra8_err_invalid_arg, k_ra8_ok, k_ra8_pid_buf, k_ra8_pid_stall, priv_dcp_pid(), priv_pick(), and priv_rmw16().

Referenced by demo_dispatch_setup(), demo_poll_once(), internal_ctrt_dispatch_fresh_setup(), internal_dispatch_class_setup(), internal_ep0_transfer(), priv_handle_ctrl_out_data(), priv_handle_ctrt(), ra8_usb_paud_handle_setup(), ra8_usb_phid_handle_setup(), ra8_usb_pprn_handle_setup(), and ra8_usb_pvnd_handle_setup().

◆ ra8_usb_dcp_in_data()

ra8_err_t ra8_usb_dcp_in_data	(	ra8_usb_speed_t	speed,
		const uint8_t *	data,
		uint16_t	len )

nodiscard

Implementation of ra8_usb_dcp_in_data().

Push the EP0 / DCP IN data-stage payload for a control transfer.

Push a control-IN data-stage payload (or zero-length packet) into the DCP FIFO, set BVAL=1 and DCPCTR.PID=BUF so the chip transmits on the next IN token from the host. Captures pre/post register snapshots into g_dcp_push_count and friends for JLink-readable diagnostic. The status stage (CCPL) is intentionally NOT pulsed here – the bridge handles it on the CTSQ status-stage edge.

Parameters

[in]	speed	Which controller (FS or HS).
[in]	data	Payload bytes (may be NULL when len==0).
[in]	len	Byte count; may exceed DCPMAXP and will be chunked.

Returns: ra8_err_t result code.

Return values

k_ra8_ok	Payload queued; PID=BUF.
k_ra8_err_invalid_arg	speed out of range OR data NULL with len > 0.
k_ra8_err_hw_timeout	FRDY never asserted within the bound.

Precondition: Caller has cleared INTSTS0.VALID (PID writes are gated by VALID per HUM Ch 37.2.31 p 2095).; USB module clock and power are on.

Postcondition: On success, len bytes have been queued and DCPCTR.PID == BUF.; On error, DCPCTR.PID is left unchanged from its prior value.

Note: Not thread-safe; caller holds the DCP lock.

Since: 0.1.0

Definition at line 214 of file ra8_usb_xfer.c.

References r_usb_regs_t::CFIFOCTR, r_usb_regs_t::DCPCTR, g_dcp_cfifoctr_post, g_dcp_cfifoctr_pre, g_dcp_dcpctr_post_push, g_dcp_dcpctr_pre_push, g_dcp_last_err, g_dcp_last_len, g_dcp_push_count, internal_dcp_in_payload(), internal_dcp_in_zlp(), k_ra8_err_invalid_arg, k_ra8_fifoctr_bclr, k_ra8_ok, priv_pick(), and priv_select_cfifo().

Referenced by demo_printer_setup(), demo_stage_descriptor(), and internal_ep0_transfer().

◆ ra8_usb_park_out_pipe()

ra8_err_t ra8_usb_park_out_pipe	(	ra8_usb_speed_t	speed,
		uint8_t	pipe_num )

nodiscard

Implementation of ra8_usb_park_out_pipe().

Park an OUT pipe at PID=NAK so an idle pipe stays quiescent.

See the public header for the documented contract; this definition implements it. Forces PIPECTR.PID = NAK so the controller NAKs (rather than ACKs) host OUT tokens while the pipe has no consumer, keeping BRDYSTS clear and the USB ISR quiescent.

Parameters

[in]	speed	See header.
[in]	pipe_num	See header.

Returns: Result code.

Return values

k_ra8_ok	Pipe parked at PID=NAK.
k_ra8_err_invalid_arg	Argument out of range.

Precondition: Speed maps to a real controller.; Pipe 1..9.

Postcondition: PIPECTR PID == NAK for pipe_num.; The host's subsequent OUT tokens on this pipe are NAKed.

Note: Not thread-safe.

Since: 0.1.0

Definition at line 441 of file ra8_usb_xfer.c.

References k_ra8_err_invalid_arg, k_ra8_ok, k_ra8_pid_nak, k_ra8_usb_max_pipe_num, priv_pick(), and priv_pipe_pid().

Referenced by internal_endpoint_arm_out_pid(), internal_irq_drain_orphan_out(), and internal_irq_finish_out().

◆ ra8_usb_queue_in()

ra8_err_t ra8_usb_queue_in	(	ra8_usb_speed_t	speed,
		uint8_t	pipe_num,
		const uint8_t *	data,
		uint16_t	len )

nodiscard

Implementation of ra8_usb_queue_in().

Queue an IN transfer (device -> host) on pipe_num.

See the public header for the documented contract; this definition implements it.

Parameters

[in]	speed	See implementation.
[in]	pipe_num	See implementation.
[in]	data	See implementation.
[in]	len	See implementation.

Returns: Result code.

Return values

k_ra8_ok Operation succeeded.

Precondition: Module state is consistent.; Module state is consistent.

Postcondition: Caller-visible state matches the documented contract.; Caller-visible state matches the documented contract.

Note: Not thread-safe unless documented otherwise.

Since: 0.1.0

Definition at line 59 of file ra8_usb_xfer.c.

References r_usb_regs_t::CFIFOCTR, k_ra8_err_invalid_arg, k_ra8_fifoctr_bval, k_ra8_ok, k_ra8_pid_buf, k_ra8_usb_max_pipe_num, k_ra8_usb_pipe_max_packet, priv_fifo_write(), priv_pick(), priv_pipe_pid(), priv_select_cfifo(), priv_wait_frdy(), RA8_RETURN_ON_ERROR, and s_tag.

Referenced by internal_bulk_xfer(), internal_control_xfer(), internal_irq_auto_echo(), internal_irq_complete_in(), internal_irq_stage_next_in(), internal_submit_in_pipe(), ra8_usb_cdc_send(), ra8_usb_haud_send_samples(), ra8_usb_hcdc_ecm_send_frame(), ra8_usb_hcdc_send(), ra8_usb_host_bulk_out(), ra8_usb_paud_send_frame(), ra8_usb_phid_send_report(), ra8_usb_pprn_send(), and ra8_usb_pvnd_send().

◆ ra8_usb_queue_out()

ra8_err_t ra8_usb_queue_out	(	ra8_usb_speed_t	speed,
		uint8_t	pipe_num,
		uint8_t *	out_buf,
		uint16_t *	inout_len,
		bool	rearm )

nodiscard

Implementation of ra8_usb_queue_out().

Drain an OUT transfer (host -> device) from pipe_num.

See the public header for the documented contract; this definition implements it.

Parameters

[in]	speed	See implementation.
[in]	pipe_num	See implementation.
[in]	out_buf	See implementation.
[in]	inout_len	See implementation.
[in]	rearm	See implementation.

Returns: Result code.

Return values

k_ra8_ok Operation succeeded.

Precondition: Module state is consistent.; Module state is consistent.

Postcondition: Caller-visible state matches the documented contract.; Caller-visible state matches the documented contract.

Note: Not thread-safe unless documented otherwise.

Since: 0.1.0

Definition at line 308 of file ra8_usb_xfer.c.

References r_usb_regs_t::BRDYSTS, r_usb_regs_t::CFIFOCTR, internal_check_queue_out_args(), k_ra8_err_invalid_arg, k_ra8_err_no_data, k_ra8_fifoctr_bclr, k_ra8_fifoctr_dtln, k_ra8_ok, k_ra8_pid_buf, priv_fifo_read(), priv_pick(), priv_pipe_pid(), priv_select_cfifo(), priv_wait_frdy(), RA8_RETURN_ON_ERROR, and s_tag.

Referenced by internal_bulk_xfer(), internal_control_xfer(), internal_irq_auto_echo(), internal_irq_complete_out(), internal_irq_drain_orphan_out(), ra8_usb_cdc_recv(), ra8_usb_haud_recv_samples(), ra8_usb_hcdc_ecm_recv_frame(), ra8_usb_hcdc_recv(), ra8_usb_hhid_get_input_report(), ra8_usb_paud_recv_frame(), ra8_usb_phid_recv_report(), ra8_usb_pprn_recv(), and ra8_usb_pvnd_recv().

◆ ra8_usb_read_setup_if_valid()

ra8_err_t ra8_usb_read_setup_if_valid	(	ra8_usb_speed_t	speed,
		ra8_usb_setup_t *	out_setup )

nodiscard

Implementation of ra8_usb_read_setup_if_valid().

Snapshot the current SETUP packet from the controller, gated on INTSTS0.VALID (FS / CTRT path).

VALID-gated SETUP drain. Returns k_ra8_err_no_data when INTSTS0.VALID is clear; otherwise drains USBREQ/USBVAL/ USBINDX/USBLENG and W0C-clears VALID.

Parameters

[in]	speed	See header.
[in]	out_setup	See header.

Returns: Result code.

Return values

k_ra8_ok	Operation succeeded.
k_ra8_err_no_data	INTSTS0.VALID was clear at entry.
k_ra8_err_invalid_arg	speed out of range.
k_ra8_err_null_ptr	out_setup was NULL.

Precondition: Module state is consistent.; out_setup is non-NULL.

Postcondition: On success, INTSTS0.VALID is W0C-cleared.; On success, *out_setup mirrors the chip's SETUP latch.

Note: Not thread-safe; FS / CTRT path uses this variant.

Since: 0.1.0

Definition at line 479 of file ra8_usb_xfer.c.

References ra8_usb_setup_t::b_request, ra8_usb_setup_t::bm_request_type, r_usb_regs_t::INTSTS0, k_ra8_err_invalid_arg, k_ra8_err_no_data, k_ra8_intsts0_mask_valid, k_ra8_ok, k_ra8_usb_byte_bits, k_ra8_usb_byte_mask, priv_pick(), RA8_CHECK_NULL_PTR, s_tag, r_usb_regs_t::USBINDX, r_usb_regs_t::USBLENG, r_usb_regs_t::USBREQ, r_usb_regs_t::USBVAL, ra8_usb_setup_t::w_index, ra8_usb_setup_t::w_length, and ra8_usb_setup_t::w_value.

Referenced by demo_poll_once().

◆ ra8_usb_read_setup_unconditional()

ra8_err_t ra8_usb_read_setup_unconditional	(	ra8_usb_speed_t	speed,
		ra8_usb_setup_t *	out_setup )

nodiscard

Implementation of ra8_usb_read_setup_unconditional (see header).

Snapshot the current SETUP packet from the controller without gating on INTSTS0.VALID (HS / SQMON polled-worker path).

Race-free SETUP drain for the HS / SQMON polled-worker path. On HS the polled dispatcher routinely observes DCPCTR.SQMON == 1 (race-immune SETUP-latched signal, HUM Ch 37.2.31 p 2095) AFTER the SIE has already auto-cleared INTSTS0.VALID. The captured registers USBREQ/USBVAL/USBINDX/ USBLENG remain latched (HUM Ch 37.2.21..24 p 2087..2090) – only the VALID flag is cleared. This entry point therefore skips the VALID gate and drains the captured registers directly, then defensively W0C-acks VALID in case the SIE re-asserted it before our store.

Parameters

[in]	speed	Which controller.
[out]	out_setup	Decoded 8-byte SETUP packet.

Returns: Result code.

Return values

k_ra8_ok	SETUP drained from the captured registers.
k_ra8_err_invalid_arg	speed out of range.
k_ra8_err_null_ptr	out_setup was NULL.

Precondition: Caller has independent proof a SETUP arrived (e.g. SQMON==1).; out_setup is non-NULL.

Postcondition: *out_setup mirrors USBREQ/USBVAL/USBINDX/USBLENG.; INTSTS0.VALID is W0C-cleared (no-op if already 0).

Note: Not thread-safe; HS / SQMON path uses this variant.

Since: 0.1.0

Definition at line 529 of file ra8_usb_xfer.c.

References ra8_usb_setup_t::b_request, ra8_usb_setup_t::bm_request_type, r_usb_regs_t::INTSTS0, k_ra8_err_invalid_arg, k_ra8_intsts0_mask_valid, k_ra8_ok, k_ra8_usb_byte_bits, k_ra8_usb_byte_mask, priv_pick(), RA8_CHECK_NULL_PTR, s_tag, r_usb_regs_t::USBINDX, r_usb_regs_t::USBLENG, r_usb_regs_t::USBREQ, r_usb_regs_t::USBVAL, ra8_usb_setup_t::w_index, ra8_usb_setup_t::w_length, and ra8_usb_setup_t::w_value.

Referenced by internal_ctrt_dispatch_fresh_setup().

◆ ra8_usb_rearm_out_pipe()

ra8_err_t ra8_usb_rearm_out_pipe	(	ra8_usb_speed_t	speed,
		uint8_t	pipe_num )

nodiscard

Implementation of ra8_usb_rearm_out_pipe().

Re-arm an OUT pipe that the controller has parked at PID=NAK.

See the public header for the documented contract; this definition implements it. The hardware-required sequence per HUM Ch 36.2.13 (NRDYSTS, W0C) and Ch 36.2.27 (PIPECTR.PID) is:

Ack NRDYSTS bit pipe_num by writing 0 to that bit (W0C: write ~pipe_bit to clear only the target bit and preserve the rest).
Force PID=BUF on the pipe so the controller ACKs the next OUT token from the host instead of NAK'ing it.

Parameters

[in]	speed	See header.
[in]	pipe_num	See header.

Returns: Result code.

Return values

k_ra8_ok	Pipe re-armed.
k_ra8_err_invalid_arg	Argument out of range.

Precondition: Speed maps to a real controller.; Pipe 1..9.

Postcondition: NRDYSTS bit pipe_num cleared.; PIPECTR PID == BUF for pipe_num.

Note: Not thread-safe.

Since: 0.1.0

Definition at line 398 of file ra8_usb_xfer.c.

References k_ra8_err_invalid_arg, k_ra8_ok, k_ra8_pid_buf, k_ra8_usb_max_pipe_num, r_usb_regs_t::NRDYSTS, priv_pick(), and priv_pipe_pid().

Referenced by internal_endpoint_arm_out_pid(), internal_irq_auto_echo(), internal_irq_complete_out(), internal_irq_recover_in_nak(), internal_submit_consume_orphan(), and internal_submit_pipe().

Variable Documentation

◆ g_dcp_cfifoctr_post

volatile uint16_t g_dcp_cfifoctr_post = 0U

Definition at line 185 of file ra8_usb_xfer.c.

Referenced by ra8_usb_dcp_in_data().

◆ g_dcp_cfifoctr_pre

volatile uint16_t g_dcp_cfifoctr_pre = 0U

Definition at line 184 of file ra8_usb_xfer.c.

Referenced by ra8_usb_dcp_in_data().

◆ g_dcp_dcpctr_post_push

volatile uint16_t g_dcp_dcpctr_post_push = 0U

Definition at line 183 of file ra8_usb_xfer.c.

Referenced by ra8_usb_dcp_in_data().

◆ g_dcp_dcpctr_pre_push

volatile uint16_t g_dcp_dcpctr_pre_push = 0U

Definition at line 182 of file ra8_usb_xfer.c.

Referenced by ra8_usb_dcp_in_data().

◆ g_dcp_last_err

volatile uint8_t g_dcp_last_err = 0U

Definition at line 187 of file ra8_usb_xfer.c.

Referenced by ra8_usb_dcp_in_data().

◆ g_dcp_last_len

volatile uint16_t g_dcp_last_len = 0U

Definition at line 186 of file ra8_usb_xfer.c.

Referenced by ra8_usb_dcp_in_data().

◆ g_dcp_push_count

volatile uint32_t g_dcp_push_count = 0U

Definition at line 181 of file ra8_usb_xfer.c.

Referenced by ra8_usb_dcp_in_data().

◆ s_tag

const char* s_tag = "USB"

static

Definition at line 35 of file ra8_usb_xfer.c.

Functions

Variables

Detailed Description

Function Documentation

◆ internal_check_queue_out_args()

◆ internal_dcp_in_payload()

◆ internal_dcp_in_zlp()

◆ ra8_usb_control_response()

◆ ra8_usb_dcp_in_data()

◆ ra8_usb_park_out_pipe()

◆ ra8_usb_queue_in()

◆ ra8_usb_queue_out()

◆ ra8_usb_read_setup_if_valid()

◆ ra8_usb_read_setup_unconditional()

◆ ra8_usb_rearm_out_pipe()

Variable Documentation

◆ g_dcp_cfifoctr_post

◆ g_dcp_cfifoctr_pre

◆ g_dcp_dcpctr_post_push

◆ g_dcp_dcpctr_pre_push

◆ g_dcp_last_err

◆ g_dcp_last_len

◆ g_dcp_push_count

◆ s_tag