examples/ek_ra8d2/hw_validated/manual/usb_host_file_ops/src/usb_host_file_ops_steps.c More...

#include "usb_host_file_ops_steps.h"
#include <stdint.h>
#include "ra8_board_ek_ra8d2.h"
#include "ra8_err.h"
#include "ra8_fs.h"
#include "ra8_io_blockdev.h"
#include "ra8_io_blockdev_usbmsc.h"

Include dependency graph for usb_host_file_ops_steps.c:

Data Structures
struct	fileops_listdir_ctx_t
	Cookie carried through ra8_fs_listdir for printing + matching. More...

Functions
static uint8_t	fileops_nibble_to_hex (uint32_t nibble)
	Format one nibble (0..15) into an uppercase hex character.
static uint32_t	fileops_str_len (const char *text)
	Bounded ASCII string length (cap k_fileops_print_cap).
static bool	fileops_name_eq (const char a, const char b)
	Bounded ASCII string equality (cap k_fileops_name_cap).
static ra8_err_t	fileops_sci_write (const uint8_t *data, uint32_t len)
	Push a literal block over SCI8 polled.
ra8_err_t	fileops_print (const char *text)
	Print a NUL-terminated ASCII string over the console.
ra8_err_t	fileops_print_dec (uint64_t value)
	Print a uint32_t as ASCII decimal.
ra8_err_t	fileops_print_hex (uint32_t value, uint8_t digits)
	Print a value as fixed-width uppercase hex.
ra8_err_t	fileops_print_fail (const char *what, ra8_err_t err)
	Print "FAIL <what> err=0xNNNNNNNN" on its own line.
static const char *	fileops_fs_type_name (ra8_fs_type_t type)
	Map a detected filesystem type to a printable name.
ra8_err_t	fileops_mount_volume (ra8_fs_mount_t **out_mount)
	Mount the attached drive through the USB-MSC backend.
static void	fileops_listdir_cb (const char name, uint8_t attr, uint64_t size, void ctx)
	Listdir callback: print one entry, match the expectation names.
static ra8_err_t	fileops_step_listdir (ra8_fs_mount_t mount, const char want, const char *avoid)
	List the root directory and check presence/absence expectations.
static ra8_err_t	fileops_read_back (ra8_fs_mount_t mount, const char path)
	Open `path` and verify it reads back the known payload.
static ra8_err_t	fileops_expect_absent (ra8_fs_mount_t mount, const char path)
	Require that `path` no longer resolves on the volume.
static ra8_err_t	fileops_step_write (ra8_fs_mount_t *mount)
	Step 3: print the banner and write the payload file.
ra8_err_t	fileops_suite_create (ra8_fs_mount_t *mount)
	Suite steps 1..5: cleanup, baseline listdir, write, verify, list.
ra8_err_t	fileops_suite_mutate (ra8_fs_mount_t *mount)
	Suite steps 6..9: rename, old-gone/new-intact, list, delete.
static void	fileops_dump_rows (const uint8_t *data, uint32_t offset, uint32_t len)
	Hex-dump `len` bytes of `data` starting at `offset`.
void	fileops_probe_layout (void)
	Dump the partition table + LBA1/LBA2 heads after a mount failure.

Variables
static const char	k_fileops_name_a [] = "USBTEST.TXT"
	Name the payload file is created under (8.3-safe, <= 15 chars).
static const char	k_fileops_name_b [] = "USBDONE.TXT"
	Name the payload file is renamed to (8.3-safe, <= 15 chars).
static const uint8_t	k_fileops_payload []
	Known payload written to and read back from the drive.
static ra8_io_blockdev_t	s_fileops_usb_dev
	Block device fronting the hosted MSC volume for this ladder.
static ra8_io_blockdev_usbmsc_state_t	s_fileops_usb_state
	Caller-owned backend state for s_fileops_usb_dev.

Detailed Description

examples/ek_ra8d2/hw_validated/manual/usb_host_file_ops/src/usb_host_file_ops_steps.c

Console helpers + ra8_fs file-op suite for the USB host file-ops app.

Tag: [Ring 6 / APP] {World: S}

Implements the polled-console print helpers, the ra8_io USB-MSC block device the ra8_fs mount runs on, the root-directory listing, the nine file-operation steps, and the on-mount-failure disk-layout probe. These routines were split out of main.c so every translation unit stays under the repository file-size cap; the boot/bring-up code and the retry ladder remain in main.c.

Author: Brighton Sikarskie

Date: 2026-06-12

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

Since: 0.1.0

Definition in file usb_host_file_ops_steps.c.

Function Documentation

◆ fileops_dump_rows()

void fileops_dump_rows	(	const uint8_t *	data,
		uint32_t	offset,
		uint32_t	len )

static

Hex-dump len bytes of data starting at offset.

Parameters

[in]	data	Sector buffer.
[in]	offset	First byte index to print.
[in]	len	Byte count to print.

Precondition: data holds at least offset + len bytes.; SCI8 init already ran.

Postcondition: The dump rows are queued on the console.; No other state changes.

Note: Print errors are swallowed – diagnostic only.

Since: 0.1.0

Definition at line 672 of file usb_host_file_ops_steps.c.

References fileops_print(), fileops_print_hex(), k_fileops_hex_chars_u16, and k_fileops_probe_row.

Referenced by fileops_probe_layout().

◆ fileops_expect_absent()

ra8_err_t fileops_expect_absent	(	ra8_fs_mount_t *	mount,
		const char *	path )

staticnodiscard

Require that path no longer resolves on the volume.

Parameters

[in]	mount	Live mount handle.
[in]	path	Name that must not exist.

Returns: ra8_err_t verdict.

Return values

k_ra8_err_exists The name still opened successfully.

Precondition: mount is a live handle from ra8_fs_mount.; path was unlinked or renamed away.

Postcondition: Any accidentally opened handle is closed again.; No filesystem mutation occurs.

Note: A lookup error other than not-found is propagated as-is.

Since: 0.1.0

Definition at line 494 of file usb_host_file_ops_steps.c.

References fileops_print_fail(), k_ra8_err_exists, k_ra8_err_not_found, k_ra8_fs_mode_read, k_ra8_ok, ra8_fs_close(), and ra8_fs_open().

Referenced by fileops_suite_mutate().

◆ fileops_fs_type_name()

const char * fileops_fs_type_name ( ra8_fs_type_t type )

static

Map a detected filesystem type to a printable name.

Parameters

[in] type Mount-time detection result.

Returns: Static NUL-terminated name string.

Return values

exfat For k_ra8_fs_type_exfat.

Precondition: None – total over the enum.; type came from a populated mount struct.

Postcondition: No state changes.; Returned pointer references static storage.

Note: Pure function.

Since: 0.1.0

Definition at line 255 of file usb_host_file_ops_steps.c.

References k_ra8_fs_type_exfat, k_ra8_fs_type_fat12, k_ra8_fs_type_fat16, k_ra8_fs_type_fat32, and k_ra8_fs_type_unknown.

Referenced by fileops_mount_volume().

◆ fileops_listdir_cb()

void fileops_listdir_cb	(	const char *	name,
		uint8_t	attr,
		uint64_t	size,
		void *	ctx )

static

Listdir callback: print one entry, match the expectation names.

Parameters

[in]	name	NUL-terminated entry name.
[in]	attr	FAT attribute byte.
[in]	size	File size in bytes (0 for directories).
[in,out]	ctx	fileops_listdir_ctx_t cookie.

Precondition: Invoked only by ra8_fs_listdir with a valid cookie.; SCI8 init already ran.

Postcondition: The entry line is queued; counters/flags are updated.; No other state changes.

Note: Print errors are swallowed – the walk must finish.

Since: 0.1.0

Definition at line 342 of file usb_host_file_ops_steps.c.

References fileops_listdir_ctx_t::avoid, fileops_listdir_ctx_t::count, fileops_name_eq(), fileops_print(), fileops_print_dec(), fileops_listdir_ctx_t::found_avoid, fileops_listdir_ctx_t::found_want, k_ra8_fs_attr_directory, and fileops_listdir_ctx_t::want.

Referenced by fileops_step_listdir().

◆ fileops_mount_volume()

ra8_err_t fileops_mount_volume ( ra8_fs_mount_t ** out_mount )

nodiscard

Mount the attached drive through the USB-MSC backend.

Parameters

[out] out_mount Receives the mount handle on success.

Returns: ra8_err_t from the block-device bind, the ra8_fs bridge, or ra8_fs_mount.

Return values

k_ra8_ok Volume mounted; the type line was printed.

Precondition: ra8_usb_hmsc_enumerate completed on the attached drive.; out_mount is non-NULL.

Postcondition: On k_ra8_ok the mount handle is live and must be unmounted later.; The "mounted fs=" line is queued on success.

Note: Reads the MBR/BPB chain over USB.

Since: 0.1.0

Definition at line 272 of file usb_host_file_ops_steps.c.

References fileops_fs_type_name(), fileops_print(), fileops_print_dec(), fileops_print_fail(), k_fileops_target_lun, k_ra8_ok, ra8_fs_mount(), ra8_io_blockdev_as_fs_backend(), ra8_io_blockdev_usbmsc_init(), s_fileops_usb_dev, and s_fileops_usb_state.

Referenced by fileops_run_ladder().

◆ fileops_name_eq()

bool fileops_name_eq	(	const char *	a,
		const char *	b )

static

Bounded ASCII string equality (cap k_fileops_name_cap).

Parameters

[in]	a	First NUL-terminated string.
[in]	b	Second NUL-terminated string.

Returns: true when both strings match through their terminators.

Return values

false On the first differing byte.

Precondition: a and b are non-NULL.; Both strings are NUL-terminated within the cap.

Postcondition: No state changes.; Comparison never walks past k_fileops_name_cap bytes.

Note: Case-sensitive byte compare.

Since: 0.1.0

Definition at line 114 of file usb_host_file_ops_steps.c.

References k_fileops_name_cap.

Referenced by fileops_listdir_cb().

◆ fileops_nibble_to_hex()

uint8_t fileops_nibble_to_hex ( uint32_t nibble )

static

Format one nibble (0..15) into an uppercase hex character.

Parameters

[in] nibble 4-bit value.

Returns: ASCII '0'..'9' or 'A'..'F'.

Return values

'0'	For a zero nibble.

Precondition: Caller has already masked the value to 4 bits.; None beyond the mask contract.

Postcondition: Returned byte is in the printable hex range.; No state changes.

Note: Pure function.

Since: 0.1.0

Definition at line 67 of file usb_host_file_ops_steps.c.

References k_fileops_hex_digit_split.

Referenced by fileops_print_hex().

◆ fileops_print()

ra8_err_t fileops_print ( const char * text )

nodiscard

Print a NUL-terminated ASCII string over the console.

Parameters

[in] text String to print (CR/LF included by the caller).

Returns: ra8_err_t propagated from the SCI helper.

Return values

k_ra8_ok All bytes queued.

Precondition: SCI8 init already ran; text is non-NULL.; text is NUL-terminated within k_fileops_print_cap bytes.

Postcondition: The string bytes are in the SCI8 TX FIFO.; No other state changes.

Note: Blocking polled TX.

Since: 0.1.0

Definition at line 146 of file usb_host_file_ops_steps.c.

References fileops_sci_write(), and fileops_str_len().

Referenced by fileops_dump_rows(), fileops_listdir_cb(), fileops_mount_volume(), fileops_print_attach(), fileops_print_fail(), fileops_probe_layout(), fileops_run_ladder(), fileops_step_listdir(), fileops_step_write(), fileops_suite_create(), fileops_suite_mutate(), and main().

◆ fileops_print_dec()

ra8_err_t fileops_print_dec ( uint64_t value )

nodiscard

Print a uint32_t as ASCII decimal.

Parameters

[in] value Value to print.

Returns: ra8_err_t propagated from the SCI helper.

Return values

k_ra8_ok All bytes queued.

Precondition: SCI8 init already ran.; None beyond console readiness.

Postcondition: One ASCII decimal token is in the SCI8 TX FIFO.; No other state changes.

Note: Blocking polled TX.

Since: 0.1.0

Definition at line 151 of file usb_host_file_ops_steps.c.

References fileops_sci_write(), k_fileops_dec_chars_u64, and k_fileops_dec_radix.

Referenced by fileops_listdir_cb(), fileops_mount_volume(), fileops_probe_layout(), fileops_step_listdir(), and fileops_step_write().

◆ fileops_print_fail()

ra8_err_t fileops_print_fail	(	const char *	what,
		ra8_err_t	err )

nodiscard

Print "FAIL <what> err=0xNNNNNNNN" on its own line.

Parameters

[in]	what	Short description of the failed step.
[in]	err	Error code returned by the step.

Returns: ra8_err_t propagated from the SCI helpers.

Return values

k_ra8_ok The diagnostic line is queued.

Precondition: SCI8 init already ran.; what is NUL-terminated within the print cap.

Postcondition: One diagnostic line is in the SCI8 TX FIFO.; No other state changes.

Note: Blocking polled TX.

Since: 0.1.0

Definition at line 186 of file usb_host_file_ops_steps.c.

References fileops_print(), fileops_print_hex(), k_fileops_hex_chars_u32, and k_ra8_ok.

Referenced by fileops_expect_absent(), fileops_mount_volume(), fileops_read_back(), fileops_run_ladder(), fileops_step_listdir(), fileops_step_write(), fileops_suite_mutate(), and main().

◆ fileops_print_hex()

ra8_err_t fileops_print_hex	(	uint32_t	value,
		uint8_t	digits )

nodiscard

Print a value as fixed-width uppercase hex.

Parameters

[in]	value	Value to print.
[in]	digits	Hex digit count (4 for u16, 8 for u32).

Returns: ra8_err_t propagated from the SCI helper.

Return values

k_ra8_ok All bytes queued.

Precondition: SCI8 init already ran.; digits is at most k_fileops_hex_chars_u32.

Postcondition: One fixed-width hex token is in the SCI8 TX FIFO.; No other state changes.

Note: Blocking polled TX.

Since: 0.1.0

Definition at line 172 of file usb_host_file_ops_steps.c.

References fileops_nibble_to_hex(), fileops_sci_write(), k_fileops_hex_chars_u32, k_fileops_nibble_bits, and k_fileops_nibble_mask.

Referenced by fileops_dump_rows(), fileops_print_attach(), and fileops_print_fail().

◆ fileops_probe_layout()

void fileops_probe_layout ( void )

Dump the partition table + LBA1/LBA2 heads after a mount failure.

Reads LBA 0 (MBR partition entries at 0x1BE), LBA 1, and LBA 2 straight through the USB backend and prints hex excerpts, so an unrecognized disk layout (e.g. GPT) can be identified from the log.

Precondition: ra8_usb_hmsc_enumerate completed on the attached drive.; SCI8 init already ran.

Postcondition: Three dump blocks are queued on the console.; No filesystem state changes.

Note: Print/read errors are swallowed – diagnostic only.

Since: 0.1.0

Definition at line 688 of file usb_host_file_ops_steps.c.

References fileops_dump_rows(), fileops_print(), fileops_print_dec(), k_fileops_probe_head_len, k_fileops_probe_lba_max, k_fileops_probe_tbl_len, k_fileops_probe_tbl_off, k_fileops_sector_bytes, k_ra8_ok, ra8_io_blockdev_read(), and s_fileops_usb_dev.

Referenced by fileops_run_ladder().

◆ fileops_read_back()

ra8_err_t fileops_read_back	(	ra8_fs_mount_t *	mount,
		const char *	path )

staticnodiscard

Open path and verify it reads back the known payload.

Parameters

[in]	mount	Live mount handle.
[in]	path	File expected to hold k_fileops_payload.

Returns: ra8_err_t verdict.

Return values

k_ra8_err_invalid_size	Read length differs from the payload.
k_ra8_err_invalid_state	A payload byte differs.

Precondition: mount is a live handle from ra8_fs_mount.; path names a file written with the payload.

Postcondition: The file is closed again in every path.; No filesystem mutation occurs.

Note: Reads the file content over USB.

Since: 0.1.0

Definition at line 449 of file usb_host_file_ops_steps.c.

References fileops_print_fail(), k_fileops_payload, k_fileops_sector_bytes, k_ra8_err_invalid_size, k_ra8_err_invalid_state, k_ra8_fs_mode_read, k_ra8_ok, ra8_fs_close(), ra8_fs_open(), and ra8_fs_read().

Referenced by fileops_suite_create(), and fileops_suite_mutate().

◆ fileops_sci_write()

ra8_err_t fileops_sci_write	(	const uint8_t *	data,
		uint32_t	len )

staticnodiscard

Push a literal block over SCI8 polled.

Parameters

[in]	data	Buffer to send.
[in]	len	Byte count.

Returns: ra8_err_t passthrough from ra8_board_uart_console_write.

Return values

k_ra8_ok All bytes queued.

Precondition: data is non-NULL; SCI8 init already ran.; len excludes any NUL terminator.

Postcondition: Bytes have been pushed out the SCI8 TX FIFO.; No other state changes.

Note: Blocking polled TX.

Since: 0.1.0

Definition at line 141 of file usb_host_file_ops_steps.c.

References ra8_board_uart_console_write().

Referenced by fileops_print(), fileops_print_dec(), and fileops_print_hex().

◆ fileops_step_listdir()

ra8_err_t fileops_step_listdir	(	ra8_fs_mount_t *	mount,
		const char *	want,
		const char *	avoid )

staticnodiscard

List the root directory and check presence/absence expectations.

Parameters

[in]	mount	Live mount handle.
[in]	want	Name that must appear (nullptr = no check).
[in]	avoid	Name that must not appear (nullptr = no check).

Returns: ra8_err_t verdict.

Return values

k_ra8_err_not_found	`want` was not listed.
k_ra8_err_exists	`avoid` was listed.

Precondition: mount is a live handle from ra8_fs_mount.; SCI8 init already ran.

Postcondition: Every root entry plus the count line is queued.; No filesystem mutation occurs.

Note: Walks the root directory over USB.

Since: 0.1.0

Definition at line 384 of file usb_host_file_ops_steps.c.

References fileops_listdir_ctx_t::count, fileops_listdir_cb(), fileops_print(), fileops_print_dec(), fileops_print_fail(), fileops_listdir_ctx_t::found_avoid, fileops_listdir_ctx_t::found_want, k_ra8_err_exists, k_ra8_err_not_found, k_ra8_ok, and ra8_fs_listdir().

Referenced by fileops_suite_create(), and fileops_suite_mutate().

◆ fileops_step_write()

ra8_err_t fileops_step_write ( ra8_fs_mount_t * mount )

staticnodiscard

Step 3: print the banner and write the payload file.

Parameters

[in] mount Live mount handle.

Returns: First failing print/write error, or k_ra8_ok.

Return values

k_ra8_ok k_fileops_name_a holds the payload.

Precondition: mount is a live handle from ra8_fs_mount.; Leftover test files were already unlinked.

Postcondition: On k_ra8_ok the volume holds k_fileops_name_a with the payload.; The step banner is queued on the console.

Note: Mutates the volume (creates the test file).

Since: 0.1.0

Definition at line 523 of file usb_host_file_ops_steps.c.

References fileops_print(), fileops_print_dec(), fileops_print_fail(), k_fileops_name_a, k_fileops_payload, k_ra8_ok, and ra8_fs_write_file().

Referenced by fileops_suite_create().

◆ fileops_str_len()

uint32_t fileops_str_len ( const char * text )

static

Bounded ASCII string length (cap k_fileops_print_cap).

Parameters

[in] text NUL-terminated string.

Returns: Number of bytes before the NUL, capped.

Return values

0	For an empty string.

Precondition: text is non-NULL.; text points to readable storage of at least the returned length.

Postcondition: No state changes.; Return value never exceeds k_fileops_print_cap.

Note: Bounded scan – never walks past the cap on a missing NUL.

Since: 0.1.0

Definition at line 88 of file usb_host_file_ops_steps.c.

References k_fileops_print_cap.

Referenced by fileops_print().

◆ fileops_suite_create()

ra8_err_t fileops_suite_create ( ra8_fs_mount_t * mount )

nodiscard

Suite steps 1..5: cleanup, baseline listdir, write, verify, list.

Parameters

[in] mount Live mount handle.

Returns: First failing step's error, or k_ra8_ok.

Return values

k_ra8_ok Steps 1-5 all passed and printed their verdicts.

Precondition: mount is a live handle from ra8_fs_mount.; SCI8 init already ran.

Postcondition: On k_ra8_ok the volume holds k_fileops_name_a with the payload.; Each completed step toggled LED2 and queued its verdict line.

Note: Mutates the volume (creates the test file).

Since: 0.1.0

Definition at line 548 of file usb_host_file_ops_steps.c.

References fileops_print(), fileops_read_back(), fileops_step_listdir(), fileops_step_write(), k_fileops_name_a, k_fileops_name_b, k_ra8_board_led2, k_ra8_ok, ra8_board_led_toggle(), and ra8_fs_unlink().

Referenced by fileops_run_ladder().

◆ fileops_suite_mutate()

ra8_err_t fileops_suite_mutate ( ra8_fs_mount_t * mount )

nodiscard

Suite steps 6..9: rename, old-gone/new-intact, list, delete.

Parameters

[in] mount Live mount handle.

Returns: First failing step's error, or k_ra8_ok.

Return values

k_ra8_ok Steps 6-9 all passed and printed their verdicts.

Precondition: fileops_suite_create completed on this mount.; SCI8 init already ran.

Postcondition: On k_ra8_ok the volume no longer holds either test name.; Each completed step toggled LED2 and queued its verdict line.

Note: Mutates the volume (rename + unlink).

Since: 0.1.0

Definition at line 596 of file usb_host_file_ops_steps.c.

References fileops_expect_absent(), fileops_print(), fileops_print_fail(), fileops_read_back(), fileops_step_listdir(), k_fileops_name_a, k_fileops_name_b, k_ra8_board_led2, k_ra8_ok, ra8_board_led_toggle(), ra8_fs_rename(), and ra8_fs_unlink().

Referenced by fileops_run_ladder().

Variable Documentation

◆ k_fileops_name_a

const char k_fileops_name_a[] = "USBTEST.TXT"

static

Name the payload file is created under (8.3-safe, <= 15 chars).

Definition at line 40 of file usb_host_file_ops_steps.c.

Referenced by fileops_step_write(), fileops_suite_create(), and fileops_suite_mutate().

◆ k_fileops_name_b

const char k_fileops_name_b[] = "USBDONE.TXT"

static

Name the payload file is renamed to (8.3-safe, <= 15 chars).

Definition at line 43 of file usb_host_file_ops_steps.c.

Referenced by fileops_suite_create(), and fileops_suite_mutate().

◆ k_fileops_payload

const uint8_t k_fileops_payload[]

static

Initial value:

=

"ra8d2 usb-hs host file-ops payload 0123456789 the quick brown fox\r\n"

Known payload written to and read back from the drive.

Definition at line 46 of file usb_host_file_ops_steps.c.

Referenced by fileops_read_back(), and fileops_step_write().

◆ s_fileops_usb_dev

ra8_io_blockdev_t s_fileops_usb_dev

static

Block device fronting the hosted MSC volume for this ladder.

Bound once in fileops_mount_volume by ra8_io_blockdev_usbmsc_init, which wires the ra8_io USB-MSC backend over the polled host-MSC class. File scope because ra8_io_blockdev_as_fs_backend keeps a pointer to this handle for the whole life of the mount.

Note: Single-threaded ladder; no locking.

Warning: Do not rebind while a mount is live.

Since: 0.1.0

Definition at line 226 of file usb_host_file_ops_steps.c.

Referenced by fileops_mount_volume(), and fileops_probe_layout().

◆ s_fileops_usb_state

ra8_io_blockdev_usbmsc_state_t s_fileops_usb_state

static

Caller-owned backend state for s_fileops_usb_dev.

Records the logical unit the backend addresses. Private to the ra8_io USB-MSC backend and must out-live every call made through the device.

Note: Single-threaded ladder; no locking.

Warning: Treat the contents as private to ra8_io.

Since: 0.1.0

Definition at line 240 of file usb_host_file_ops_steps.c.

Referenced by fileops_mount_volume().

Data Structures

Functions

Variables

Detailed Description

Function Documentation

◆ fileops_dump_rows()

◆ fileops_expect_absent()

◆ fileops_fs_type_name()

◆ fileops_listdir_cb()

◆ fileops_mount_volume()

◆ fileops_name_eq()

◆ fileops_nibble_to_hex()

◆ fileops_print()

◆ fileops_print_dec()

◆ fileops_print_fail()

◆ fileops_print_hex()

◆ fileops_probe_layout()

◆ fileops_read_back()

◆ fileops_sci_write()

◆ fileops_step_listdir()

◆ fileops_step_write()

◆ fileops_str_len()

◆ fileops_suite_create()

◆ fileops_suite_mutate()

Variable Documentation

◆ k_fileops_name_a

◆ k_fileops_name_b

◆ k_fileops_payload

◆ s_fileops_usb_dev

◆ s_fileops_usb_state