| /freebsd/contrib/ntp/html/ |
| H A D | audio.html | 1 <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
4 <meta http-equiv="content-type" content="text/html;charset=iso-8859-1">
11 <img src="pic/radio2.jpg" alt="jpg" align="left">ICOM R-72 shortwave receiver and Sure audio mixer
13 <!-- #BeginDate format:En2m -->11-Sep-2010 05:55<!-- #EndDate -->
27 …to an audio signal, rather than a serial timecode and communications port or special purpose bus p…
28 <p>All three drivers make ample use of sophisticated digital signal processing
29 algorithms designed to efficiently extract timing signals from noise and interference.
31 and decoding techniques, including maximum-likelihood and soft-decision methods.
32 The documentation page for each driver contains an in-depth discussion on
36 …to groom input signals, suppress spikes and normalize signal levels. An automatic gain control (AG…
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| /freebsd/contrib/libxo/doc/ |
| H A D | faq.rst | 9 -------
14 In 2001, we added an XML API to the JUNOS operating system, which is
17 FreeBSD utilities to emit XML, typically via a "-X" switch. The
19 and carrying it were non-trivial, and contributed to our expense (and
26 to the underlying FreeBSD code as a means of reducing the expense and
27 delay in tracking HEAD. JUNOS is structured to have system components
29 human-readable text. This allows the API to use the same plumbing as
34 libxo is an effort to mix the best aspects of the JUNOS strategy into
35 FreeBSD in a seemless way, allowing commands to make printf-like
44 which is feed to the CLI, where data from the ODL files tell is
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| /freebsd/share/man/man9/ |
| H A D | ieee80211_input.9 | 16 .\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20 .\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
40 .Fa "int noise"
47 .Fa "int noise"
53 receive processing be single-threaded.
65 must have the 802.11 protocol header at the front; all device-specific
68 The 802.11 protocol header should be 32-bit aligned for
70 If the frame holds a payload and that is not aligned to a 32-bit
71 boundary then the payload will be re-aligned so that it is suitable
77 inserts padding after the 802.11 header to align
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| H A D | ieee80211_radiotap.9 | 17 .\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 .\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
60 layer used by 802.11 drivers includes support for a device-independent
68 Radiotap was designed to balance the desire for a hardware-independent,
69 extensible capture format against the need to
71 These considerations led to a format consisting of
84 and macros to set the bits of the
86 bitmap to indicate which fields exist and are filled in by the driver.
93 With radiotap setup, drivers just need to fill in per-packet
95 in the transmit path (since control is not returned to the
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| /freebsd/sys/contrib/device-tree/Bindings/iio/adc/ |
| H A D | adi,ad4080.yaml | 1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
4 ---
6 $schema: http://devicetree.org/meta-schemas/core.yaml#
8 title: Analog Devices AD4080 20-Bit, 40 MSPS, Differential SAR ADC
11 - Antoniu Miclaus <antoniu.miclaus@analog.com>
14 The AD4080 is a high speed, low noise, low distortion, 20-bit, Easy Drive,
15 successive approximation register (SAR) analog-to-digital converter (ADC).
16 Maintaining high performance (signal-to-noise and distortion (SINAD) ratio
17 > 90 dBFS) at signal frequencies in excess of 1 MHz enables the AD4080 to
21 https://www.analog.com/media/en/technical-documentation/data-sheets/ad4080.pdf
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| /freebsd/contrib/ntp/html/drivers/ |
| H A D | driver36.html | 1 <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
4 <meta http-equiv="content-type" content="text/html;charset=iso-8859-1">
13 <!-- #BeginDate format:En2m -->15-Nov-2012 06:42<!-- #EndDate -->
20 Autotune Port: <tt>/dev/icom</tt>; 1200/9600 baud, 8-bits, no parity<br>
23 …to one of these frequencies or, in the case of ICOM receivers, the receiver can be tuned automatic…
24 …-law companding to demodulate the data. This is the same standard as used by the telephone industr…
25 …to the broadcast time when tracking a station. However, variations up to 0.3 ms can be expected du…
26 …to the PPS signal from a GPS receiver, the mean offset with a 2.4-GHz P4 running FreeBSD…
27 … performs a number of error checks to protect against overdriven or underdriven input signal level…
28 …ctable audio codec port and signal monitoring capabilities. For a discussion of these common featu…
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| H A D | driver22.html | 1 <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
4 <meta http-equiv="content-type" content="text/html;charset=iso-8859-1">
7 <!-- Changed by: Harlan &, 31-Mar-2014 -->
14 <!-- #BeginDate format:En2m -->31-Mar-2014 07:46<!-- #EndDate -->
22 Requires: PPSAPI signal interface for PPS signal processing.</p>
23 …f the same name. The older driver operated with several somewhat archaic signal interface devices,…
25 …-per-second (PPS) signal produced by a cesium clock, radio clock or related devices. It can be use…
26 <p>While this driver can discipline the time and frequency relative to the PPS source, it cannot nu…
27 … of Tru64 (Alpha) and SunOS. See the <a href="../pps.html">Pulse-per-second (PPS) Signal Interfaci…
28 …to the PPS source or shared with another device; however, if dedicated the data leads should not b…
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| H A D | driver7.html | 1 <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
4 <meta http-equiv="content-type" content="text/html;charset=iso-8859-1">
13 <!-- #BeginDate format:En2m -->17-Jul-2014 02:17<!-- #EndDate -->
20 Modem Port: <tt>/dev/chu<i>u</i></tt>; 300 baud, 8-bits, no parity<br>
21 Autotune Port: <tt>/dev/icom</tt>; 1200/9600 baud, 8-bits, no parity<br>
25 …from Canadian time/frequency station <a href="http://inms-ienm.nrc-cnrc.gc.ca/time_services/shortw…
28 shortwave receiver can be tuned manually to one of these frequencies or, in
31 …to use either an audio codec or soundcard, or a Bell 103-compatible, 300-b/s modem or modem chip, …
32 …to the broadcast time when tracking a station. However, variations up to 0.3 ms can be expected du…
33 …to the PPS signal from a GPS receiver, the mean offset with a 2.4-GHz P4 running FreeBSD…
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| /freebsd/tools/tools/net80211/stumbler/ |
| H A D | stumbler.c | 1 /*-
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
45 #include <signal.h>
54 int ioctl_s = -1;
55 int bpf_s = -1;
79 int signal; member
80 int noise; member
97 if (ioctl_s != -1) in clean_crap()
99 if (bpf_s != -1) in clean_crap()
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| /freebsd/contrib/ntp/ntpd/ |
| H A D | refclock_wwv.c | 2 * refclock_wwv - clock driver for NIST WWV/H time/frequency station
37 * ordinary AM shortwave receiver can be tuned manually to one of these
43 * kHz and mu-law companding. This is the same standard as used by the
51 * TI 320C25 digital signal processor described in: Mills, D.L. A
53 * Report 97-8-1, University of Delaware, August 1997, 25 pp., available
55 * in this report have been modified somewhat to improve performance
56 * under weak signal conditions and to provide an automatic station
61 * a nonzero ICOM ID select code. The C-I
2335 wwv_snr(double signal,double noise) wwv_snr() argument
2336 wwv_snr(double signal,double noise) wwv_snr() argument
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| H A D | refclock_irig.c | 2 * refclock_irig - audio IRIG-B/E demodulator/decoder
26 * Audio IRIG-B/E demodulator/decoder
29 * IRIG-B/E signals commonly produced by GPS receivers and other timing
30 * devices. The IRIG signal is an amplitude-modulated carrier with
31 * pulse-width modulated data bits. For IRIG-B, the carrier frequency is
32 * 1000 Hz and bit rate 100 b/s; for IRIG-E, the carrier frequenchy is
37 * kHz and mu-la
228 double signal; /* peak signal for AGC */ global() member
243 double noise; /* integrated noise amplitude */ global() member
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| H A D | refclock_chu.c | 2 * refclock_chu - clock driver for Canadian CHU time/frequency station
26 #define ICOM 1 /* undefine to suppress ICOM code */
38 * ordinary shortwave receiver can be tuned manually to one of these
44 * kHz and mu-law companding. This is the same standard as used by the
50 * The driver can be compiled to use a Bell 103 compatible modem or
51 * modem chip to receive the radio signal and demodulate the data.
52 * Alternatively, the driver can be compiled to use the audio codec of
55 * the radio can be connected directly to either the microphone on line
57 * maximum-likelihood technique which exploits the considerable degree
58 * of redundancy available to maximize accuracy and minimize errors.
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| /freebsd/sys/contrib/dev/mediatek/mt76/ |
| H A D | mt792x_mac.c | 1 // SPDX-License-Identifier: ISC
19 phy = mphy->priv; in mt792x_mac_work()
21 mt792x_mutex_acquire(phy->dev); in mt792x_mac_work()
24 if (++mphy->mac_work_count == 2) { in mt792x_mac_work()
25 mphy->mac_work_count = 0; in mt792x_mac_work()
30 mt792x_mutex_release(phy->dev); in mt792x_mac_work()
32 mt76_tx_status_check(mphy->dev, false); in mt792x_mac_work()
33 ieee80211_queue_delayed_work(phy->mt76->hw, &mphy->mac_work, in mt792x_mac_work()
40 s16 coverage_class = phy->coverage_class; in mt792x_mac_set_timeing()
41 struct mt792x_dev *dev = phy->dev; in mt792x_mac_set_timeing()
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| /freebsd/contrib/wpa/wpa_supplicant/ |
| H A D | bss.h | 3 * Copyright (c) 2009-2019, Jouni Malinen <j@w1.fi>
41 * struct wpa_bss_anqp - ANQP data for a BSS entry (struct wpa_bss)
44 /** Number of BSS entries referring to this ANQP data instance */
71 * struct wpa_bss - BSS table
73 * This structure is used to store information about neighboring BSSes in
105 /** Signal quality */
107 /** Noise level */
108 int noise; member
109 /** Signal level */
113 /** Whether the Beacon frame data is known to be newer */
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| H A D | scan.h | 2 * WPA Supplicant - Scanning
3 * Copyright (c) 2003-2014, Jouni Malinen <j@w1.fi>
13 * Noise floor values to use when we have signal strength
14 * measurements, but no noise floor measurements. These values were
17 #define DEFAULT_NOISE_FLOOR_2GHZ (-89)
18 #define DEFAULT_NOISE_FLOOR_5GHZ (-92)
19 #define DEFAULT_NOISE_FLOOR_6GHZ (-92)
23 * This doc https://supportforums.cisco.com/docs/DOC-12954 says, "the general
34 * IEEE Sts 802.11ax-2021, 9.4.2.161 (Transmit Power Envelope element) indicates
|
| /freebsd/sys/dev/ath/ath_hal/ar5210/ |
| H A D | ar5210phy.h | 1 /*-
2 * SPDX-License-Identifier: ISC
4 * Copyright (c) 2002-2008 Sam Leffler, Errno Consulting
5 * Copyright (c) 2002-2004 Atheros Communications, Inc.
7 * Permission to use, copy, modify, and/or distribute this software for any
12 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
34 #define AR_PHY_PARITY_ERR 0x02000000 /* Detect signal parity err */
54 #define AR_PHY_AGCCTL 0x9860 /* PHY calibration and noise floor */
56 #define AR_PHY_AGC_NF 0x00000002 /* calc PHY noise-floor */
|
| /freebsd/sys/dev/ath/ath_hal/ar5416/ |
| H A D | ar5416_ani.c | 1 /*-
2 * SPDX-License-Identifier: ISC
4 * Copyright (c) 2002-2009 Sam Leffler, Errno Consulting
5 * Copyright (c) 2002-2008 Atheros Communications, Inc.
7 * Permission to use, copy, modify, and/or distribute this software for any
12 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
23 * storage in the 5212 state block; need to refactor.
34 * Anti noise immunity support. We track phy errors and react
35 * to excessive errors by adjusting the noise immunity parameters.
39 ((((x)%(mul)) >= ((mul)/2)) ? ((x) + ((mul) - 1)) / (mul) : (x)/(mul))
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| /freebsd/sys/contrib/dev/ath/ath_hal/ar9300/ |
| H A D | ar9300_ani.c | 4 * Permission to use, copy, modify, and/or distribute this software for any
9 * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
34 * Anti noise immunity support. We track phy errors and react
35 * to excessive errors by adjusting the noise immunity parameters.
65 ((((x) % (mul)) >= ((mul) / 2)) ? ((x) + ((mul) - 1)) / (mul) : (x) / (mul))
67 HAL_EP_RND(ahp->ah_stats.ast_nodestats.ns_avgbrssi, \
73 * firstep_table: lvl 0-8, default 2
75 static const TABLE firstep_table = { -4, -2, 0, 2, 4, 6, 8, 10, 12};
76 /* cycpwr_thr1_table: lvl 0-7, default 3 */
77 static const TABLE cycpwr_thr1_table = { -6, -4, -2, 0, 2, 4, 6, 8 };
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| /freebsd/sys/dev/ath/ath_hal/ar5212/ |
| H A D | ar5212_ani.c | 1 /*-
2 * SPDX-License-Identifier: ISC
4 * Copyright (c) 2002-2009 Sam Leffler, Errno Consulting
5 * Copyright (c) 2002-2008 Atheros Communications, Inc.
7 * Permission to use, copy, modify, and/or distribute this software for any
12 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
30 * Anti noise immunity support. We track phy errors and react
31 * to excessive errors by adjusting the noise immunity parameters.
35 ((((x)%(mul)) >= ((mul)/2)) ? ((x) + ((mul) - 1)) / (mul) : (x)/(mul))
37 HAL_EP_RND(ahp->ah_stats.ast_nodestats.ns_avgbrssi, \
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| /freebsd/sys/contrib/device-tree/Bindings/regulator/ |
| H A D | richtek,rt5190a-regulator.yaml | 1 # SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
3 ---
4 $id: http://devicetree.org/schemas/regulator/richtek,rt5190a-regulato
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| /freebsd/sys/contrib/zstd/ |
| H A D | CONTRIBUTING.md | 1 # Contributing to Zstandard
2 We want to make contributing to this project as easy and transparent as
24 In order to accept your pull request, we need you to submit a CLA. You only need
25 to do this once to work on any of Facebook's open source projects.
30 Zstd uses a branch-based workflow for making changes to the codebase. Typically, zstd
31 will use a new branch per sizable topic. For smaller changes, it is okay to lump multiple
51 git checkout -b <branch-name>
52 git push origin <branch-name>
57 git add -u && git commit -m <message>
58 git push origin <branch-name>
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| /freebsd/sys/contrib/device-tree/Bindings/sound/ |
| H A D | st,sta350.txt | 7 - compatible: "st,sta350"
8 - reg: the I2C address of the device for I2C
9 - reset-gpios: a GPIO spec for the reset pin. If specified, it will be
10 deasserted before communication to the codec starts.
12 - power-down-gpios: a GPIO spec for the power down pin. If specified,
13 it will be deasserted before communication to the codec
16 - vdd-dig-supply: regulator spec, providing 3.3V
17 - vdd-pll-supply: regulator spec, providing 3.3V
18 - vcc-supply: regulator spec, providing 5V - 26V
22 - st,output-conf: number, Selects the output configuration:
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| /freebsd/tools/tools/ath/athstats/ |
| H A D | athstats.c | 1 /*-
2 * Copyright (c) 2002-2009 Sam Leffler, Errno Consulting
12 * similar to the "NO WARRANTY" disclaimer below ("Disclaimer") and any
19 * LIMITED TO, THE IMPLIED WARRANTIES OF NONINFRINGEMENT, MERCHANTIBILITY
22 * OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
46 #include <signal.h>
65 ((((x)%(mul)) >= ((mul)/2)) ? ((x) + ((mul) - 1)) / (mul) : (x)/(mul))
81 { 7, "short", "short", "short on-chip tx retries" },
83 { 7, "long", "long", "long on-chip tx retries" },
90 { 5, "txlinear", "txlinear", "tx linearized to cluster" },
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| /freebsd/sys/dev/hid/ |
| H A D | bcm5974.c | 1 /*-
2 * SPDX-License-Identifier: BSD-2-Clause
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
60 /* magic to switch device from HID (default) mode into raw */
84 /* the default is to only log errors */
101 * Copyright (C) 2001-200
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| /freebsd/sys/contrib/dev/iwlwifi/ |
| H A D | iwl-utils.c | 1 /* SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause */
3 * Copyright (C) 2024-2025 Intel Corporation
9 #include "iwl-drv.h"
10 #include "iwl-utils.h"
18 struct ieee80211_hdr *hdr = (void *)skb->data; in iwl_tx_tso_segment()
19 char cb[sizeof(skb->cb)]; in iwl_tx_tso_segment()
22 unsigned int mss = skb_shinfo(skb)->gso_size; in iwl_tx_tso_segment()
23 bool ipv4 = (skb->protocol == htons(ETH_P_IP)); in iwl_tx_tso_segment()
24 bool qos = ieee80211_is_data_qos(hdr->frame_control); in iwl_tx_tso_segment()
25 u16 ip_base_id = ipv4 ? ntohs(ip_hdr(skb)->id) : 0; in iwl_tx_tso_segment()
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