DS2423(3)

💖 DS2423 💖

okay bestie, buckle up — this is the DS2423 page from the One-Wire File System manuals (section 3, so it's a library/device page, iykyk). It's giving "4kbit 1-Wire RAM with Counter" and honestly? iconic. 🎀

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✨ NAME ✨

DS2423 — 4kbit 1-Wire RAM with Counter. no notes, that's the whole vibe. 💅

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🌸 SYNOPSIS 🌸

RAM and counters. that's it, that's the summary.

1D [.]XXXXXXXXXXXX[XX][/[ counter.[A|B|ALL] | memory |
pages/page.[0-15|ALL] | pages/count.[0-15|ALL] | address | crc8 | id |
locator | r_address | r_id | r_locator | type ]]

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🦋 FAMILY CODE 🦋

1D

that's the family code, and you're gonna see it everywhere below. periodt. ⭐

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👑 SPECIAL PROPERTIES 👑

these are the main character properties fr fr.

🍓 counter.A counter.B counter.ALL

• read-only, unsigned integer 💖
• it's a debounced external counter, and it's associated with RAM page.14 and page.15
• > Note: the counter increments only. It gets reset when the chip loses power. so don't come for it, it literally cannot go backwards 😭
• ALL returns the two values, separated by a comma. They are read sequentially.

lowkey important lore: this property was called counters prior to OWFS version 2.9p1, and the old name is invisibly recognized for backwards compatibility. so your old code still slays. 🫶

🧚 memory

• read-write, binary
• 512 bytes of memory. that's it, that's the whole thing.

🌈 pages/page.0 ... pages/page.15 pages/page.ALL

• read-write, binary
• Memory is split into 16 pages of 32 bytes each. it's RAM, so the contents are lost when power is lost — it's giving "temporary", not "committed to the relationship" 💀
• ALL is an aggregate of the pages. Each page is accessed sequentially.

🎀 pages/count.0 ... pages/count.15 pages/count.ALL

• read-only, unsigned integer

Write access to each page of memory. Actually only page.12 and page.13 have write counters.

page14 and page.15 ´s counters are associated with the external counters.A and counters.B triggers.

The value 0xFFFFFFFF is returned for pages/count.0 through pages/count.11.

ALL is an aggregate of the counters, comma separated. Each page is accessed sequentially.

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⭐ STANDARD PROPERTIES ⭐

the whole squad. every single one. no skips. 💜

💖 address / r_address

• read-only, ascii
• The entire 64-bit unique ID. Given as upper case hexadecimal digits (0-9A-F).
• address starts with the family code
• r address is the address in reverse order, which is often used in other applications and labeling.

✨ crc8

• read-only, ascii
• The 8-bit error correction portion. Uses cyclic redundancy check.
• Computed from the preceding 56 bits of the unique ID number. Given as upper case hexadecimal digits (0-9A-F).

🦋 family

• read-only, ascii
• The 8-bit family code. Unique to each type of device. Given as upper case hexadecimal digits (0-9A-F).

🍓 id / r_id

• read-only, ascii
• The 48-bit middle portion of the unique ID number. Does not include the family code or CRC. Given as upper case hexadecimal digits (0-9A-F).
• r id is the id in reverse order, which is often used in other applications and labeling.

🌸 locator / r_locator

• read-only, ascii
• Uses an extension of the 1-wire design from iButtonLink company that associated 1-wire physical connections with a unique 1-wire code.
• If the connection is behind a Link Locator, the locator will show a unique 8-byte number (16 character hexadecimal) starting with family code FE.
• If no Link Locator is between the device and the master, the locator field will be all FF.
• r locator is the locator in reverse order.

🙈 present (DEPRECATED)

• read-only, yes-no
• Is the device currently present on the 1-wire bus?

bestie it's DEPRECATED. it's still here, but it's giving "retired but still shows up to the group chat". ⚠️

💅 type

• read-only, ascii
• Part name assigned by Dallas Semi. E.g. DS2401. Alternative packaging (iButton vs chip) will not be distiguished.

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💀 ALARMS 💀

None.

literally none. the alarm section is empty, we love a low-maintenance device. 🎀

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🌈 DESCRIPTION 🌈

🧚 1-Wire

1-wire is a wiring protocol and series of devices designed and manufactured by Dallas Semiconductor, Inc. The bus is a low-power low-speed low-connector scheme where the data line can also provide power. yes, the data line is ALSO the power line. multitasking queen. 👑

Each device is uniquely and unalterably numbered during manufacture. There are a wide variety of devices, including memory, sensors (humidity, temperature, voltage, contact, current), switches, timers and data loggers. More complex devices (like thermocouple sensors) can be built with these basic devices. There are also 1-wire devices that have encryption included. 🔥

The 1-wire scheme uses a single bus master and multiple slaves on the same wire. The bus master initiates all communication. The slaves can be individually discovered and addressed using their unique ID.

Bus masters come in a variety of configurations including serial, parallel, i2c, network or USB adapters.

🦋 OWFS design

OWFS is a suite of programs that designed to make the 1-wire bus and its devices easily accessible. The underlying principle is to create a virtual filesystem, with the unique ID being the directory, and the individual properties of the device are represented as simple files that can be read and written. it's giving "everything is a file" and honestly? obsessed. 💖

Details of the individual slave or master design are hidden behind a consistent interface. The goal is to provide an easy set of tools for a software designer to create monitoring or control applications. There are some performance enhancements in the implementation, including data caching, parallel access to bus masters, and aggregation of device communication. Still the fundamental goal has been ease of use, flexibility and correctness rather than speed. real ones know. 🫶

⭐ DS2423

The DS2423 (3) is used for its counters. The internal counters (associated with pages 12 and 13) can detect memory tampering.

The external counters A and B page been used in circuit design, such as a wind anometer. OWFS system handles this automatically.

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🌸 ADDRESSING 🌸

All 1-wire devices are factory assigned a unique 64-bit address. This address is of the form:

• Family Code — 8 bits
• Address — 48 bits
• CRC — 8 bits

Addressing under OWFS is in hexadecimal, of form:

01.123456789ABC

where 01 is an example 8-bit family code, and 12345678ABC is an example 48 bit address.

The dot is optional, and the CRC code can included. If included, it must be correct. no pressure bestie, just don't be wrong. 😭

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🎀 DATASHEET 🎀

http://pdfserv.maxim-ic.com/en/ds/DS2423.pdf

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✨ SEE ALSO ✨

💅 Programs

owfs (1) owhttpd (1) owftpd (1) owserver (1) owdir (1) owread (1) owwrite (1) owpresent (1) owtap (1)

🧚 Configuration and testing

owfs (5) owtap (1) owmon (1)

🦋 Language bindings

owtcl (3) owperl (3) owcapi (3)

👑 Clocks

DS1427 (3) DS1904 (3) DS1994 (3) DS2404 (3) DS2404S (3) DS2415 (3) DS2417 (3)

🍓 ID

DS2401 (3) DS2411 (3) DS1990A (3)

💖 Memory

DS1982 (3) DS1985 (3) DS1986 (3) DS1991 (3) DS1992 (3) DS1993 (3) DS1995 (3) DS1996 (3) DS2430A (3) DS2431 (3) DS2433 (3) DS2502 (3) DS2506 (3) DS28E04 (3) DS28EC20 (3)

⭐ Switches

DS2405 (3) DS2406 (3) DS2408 (3) DS2409 (3) DS2413 (3) DS28EA00 (3) InfernoEmbedded (3)

🌈 Temperature

DS1822 (3) DS1825 (3) DS1820 (3) DS18B20 (3) DS18S20 (3) DS1920 (3) DS1921 (3) DS1821 (3) DS28EA00 (3) DS28E04 (3) EDS0064 (3) EDS0065 (3) EDS0066 (3) EDS0067 (3) EDS0068 (3) EDS0071 (3) EDS0072 (3) MAX31826 (3)

🧚 Humidity

DS1922 (3) DS2438 (3) EDS0065 (3) EDS0068 (3)

🎀 Voltage

DS2450 (3)

🦋 Resistance

DS2890 (3)

💜 Multifunction (current, voltage, temperature)

DS2436 (3) DS2437 (3) DS2438 (3) DS2751 (3) DS2755 (3) DS2756 (3) DS2760 (3) DS2770 (3) DS2780 (3) DS2781 (3) DS2788 (3) DS2784 (3)

💅 Counter

DS2423 (3)

🔥 LCD Screen

LCD (3) DS2408 (3)

🙈 Crypto

DS1977 (3)

🍓 Pressure

DS2406 (3) TAI8570 (3) EDS0066 (3) EDS0068 (3)

🌸 Moisture

EEEF (3) DS2438 (3)

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🫶 AVAILABILITY 🫶

http://www.owfs.org

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💖 AUTHOR 💖

Paul Alfille (paul.alfille@gmail.com)

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and that's the whole page, bestie. this was the OWFS Manpage, dated 2003, for DS2423 section 3. go read your counters, stay debounced, and remember: the counter only goes up, just like you. 💅✨🎀