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Menghubungkan catu daya yang dikendalikan, sensor, dan relay ke motherboard server. Tanpa Arduino

, , , GPIO- «» I²C IPMI- (BMC). I²C- ipmitool. SMBus, PMBus . . .

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DISCLAIMER


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, IPMI, I²C, SMBus PMBus, , . , , , . .

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/ . , ( ) , , . X8 X9 NAS , enterpise-, « » - …

FreeNAS Windows-, USB-. , 1 -, . Linux? - , . , - 1 — (, ). USB jail VirtualBox ...

, 20 GPIO , . , — :)


, X9SCM-F (Intel C204 Express), X9SCL-F (C202). , , 24- ATX , SATA- - . , -, T-SGPIO 1 2, «GPIO». , - . SGPIO, , . SATA-: HBA — , — (, , ). , I²C. , , 6 SATA- , T-SGPIO. , , . , JWF1 -, 5 SATA DOM, . . 9- USB RS232, . - COM2 JI2C1/JI2C2, PCIe. , , JI2C1/JI2C2 SCL SDA, 3.3 «», PCIe. . JTPM , . JF1 UID LED, . , .. : , UID LED — () . , , . , , - BMC, UID LED , . , , , ATX-, JPI2C.

, JPI2C . , I²C «» . JPI2C 5- Molex SL 0.1" (2.54) , 70543-0004. ( ) — Molex 70066-0179 (aka BL-05F). , I²C 5- Molex SL (BL-05M). , , , .

Power Supply I²C Connector

Power Supply I²C Connector, located at JPI2C, monitors the status of the power supply, fan and system temperature. See the table on the right for pin definitions.

JPI2C I²C: SCL, SDA, GND VCC. — . , , Power Fail — , . FAQ ID 9492 30 2010, I²C . BMC , ipmitool «» I²C , JPI2C - .

: BL BLS?
MP3, 4- , CD- . , BLS-4, CD- , . , , BL-04F, . MP3 , ...

? , JPI2C , - CD-, 5 4. JPI2C BLS-5, BL-05F, . .

«» 40- , . , , .. . BLS-1 M-F, M-M F-F. aliexpress: «dupont cable».

I²C


JPI2C - aliexpress BMP180. . , bus, . () BMP180 . X9SCM-F №3 0xee 0xef (. ). JI2C1/JI2C2 ENABLE , PCIe …

ipmiscan.sh
, - progress bar , (0, 1, 2 3). bash 3.0+.
#!/bin/bash

for bus in 0 1 2 3; do
        echo Bus $bus
        for i in {16..238..2}; do
                printf -v args "i2c bus=%d 0x%02x 0x01" $bus $i
                printf " 0x%02x" $i
                ipmitool $args 2>/dev/null && echo "(bus $bus)"
        done
        echo
done

. I²C -: ( , — ). FAQ ID 9492 , . ipmitool , , ? IPMI 2.0 : Master Read-Write (0x06 0x52) ( ).

BMP180, JPI2C X9SCM-F, (bus=3) 0xee ( 0xef, ). .. 0x77, datasheet (Bosch 8- ). BMP180 «» IPMI- 0x77, , IPMI I²C- ( ). I²C , , .

I²C , . «i2c sensor» , -. , 30 , . BMP180, , : stateful-, « ». - .

, .. , , : , , , , . IPMI, . DIY .

Andrew Grekhov , , . , , . , ipmitool , -H, -U -P, raw 0x06 0x52 0x07 i2c bus=3, «» , . Master Read-Write IPMI.

Andrew Grekhov, ( ) . , PMBus, . . PMBus SMBus , SMBus, , I²C. , PMBus. PMBus , : ? , .

, , (), , , PMBus rev 1.1. , www.pmbus.org, PMBus Specification Part II Rev. 1.1. , . 26 APPENDIX I. Command Summary. , , - 0x78 (STATUS_BYTE), 0x88 (READ_VIN), 0x89 (READ_IIN), 0x95 (READ_FREQUENCY) : , . 26, (Read Byte Read Word) . , byte word?

: I²C 0x30 (COEFFICIENTS), SMBus? , - , .. , SMBus 0x30 2, (0x88 READ_VIN) , . 1 + 5 + 1 m, B R, . — , — PEC ( ). .. , SMBus I²C, , :

ipmitool i2c bus=3 0x70 0x07 0x30 0x02 0x88 0x01

0x30 0x02 0x88 0x01 0x70, №3, 7 ( , , PEC). ( 0x78, — ), 7 6 ( PEC). - , , production, :) , , .

BMP180
BMP180 . , IPMI- 0xee . BMP180 stateful-, .. ( .. ). BMP180 BMP085, — BMP280, .
, , . 0x2e 0xf4:

ipmitool i2c bus=3 0xee 0x00 0xf4 0x2e

0x00 , 0xee, . 4.5 16- UT (« ») 0xf6 :

ipmitool i2c bus=3 0xee 0x02 0xf6

0xf6 0xee (.. 0x77, BMP180), . IPMI Master Write-Read stateful-.

UT 0x6a 0x48, 27208 (.. - 27°C «» , BMP180, , ). UT 0x8000, , .

: AC5, AC6, MC MD 0xb2, 0xb4, 0xbc 0xbe, , (, !).

X1=(UT−AC6)·AC5/215


X2=MC·211/(X1+MD)


B5=X1+X2


T=(B5+8)/24/10



10, .. . , , 15 11 . , , 0xf4. ? , :)

41j .

GPIO
, , , . BMP180 I²C 8- GPIO PCF8574AT.
, PCF8574A ( PCF8574) 0x38 ( PCF8574 0x20), . , , - 8 , . 8 , 64 GPIO. , . I²C .

I²C
, BMP180, 0x77 (.. 0xee) ? , (), TCA9548A - , . () 8 , . , GPIO, . : - I²C SDA SCL, . , , 8 BMP180, c A0-A2 0x70 (. 0xe0 ipmitool). A0=A1=A2=1 0x77, , , BMP180. , TCA9548A, I²C 56 -. , . , , .


ipmitool(1) v1.8.15, () FreeBSD 10. , , stderr, stdout. . , - IPMI (perl, Python), raw-.

ipmitool(1) (623/tcp), JPI2C , . IPMI . , , , , (, Raspberry Pi microSD- read-only).

, , « ». , Power Fail SNMP-, . : , , , . — .

I²C


«» I²C- , , . «» I²C-, , . ? , , . , , . FAQ ID 9492, (, , ) 0x38, 0x39, 0x3a, ... ( IPMI, ).

IPMI I²C: , Master Write-Read IPMI. IPMI 2.0 22.11, . , I²C — , . IPMI Master Write-Read : «-» , IPMI ( 30 ). , () BMC I²C () BMC , .. .

, IPMI Master Write-Read ( ) , BMC , I²C: I²C, . , - 4- I²C- IPMI, . , , , , , :)

, SMBus, , I²C , Write/Read Block. SMBus, IPMI , . , IPMI SMBus , , .


BMC-, , . , , «» , KVM - . BMC- , BMC ( BIOS).

-


, , - , c :

, , :
In some ways, Corsair Link is one of our best kept secrets. It had a very rocky start, but continued and continuing development has turned it into an extremely useful combination of hardware and software. It allows you to connect several products within our ecosystem to a software-based control panel, but there's so much more to it than that.

, , , , , . , .

, Corsair Link Commander Mini USB HID, SMBus, «» PMBus, . SMBus, 0x98 (PMBUS_REVISION). , . PMBus . , , ( ) .

, «» community- , . , , .. . , , .

, community :

Kevin Horton FreeNAS Perl. . , -, , X10 . , SMART. , . .

X9 (socket 1155) : X9SCL/X9SCM «» «» BIOS (). , IPMI ...


UPD:

IPMI I²C —


, I²C ? USB- I²C/SMBus, USB HID.

x893 -: CP2112 - Silicon Labs MCP2221A - Microchip. , «A» 460 115. , CP2112EK $40, ADM00559 MCP2221 . , / , .

, , USB , USB HID . : , HID, , CDC, .. COM-. USB HID . , , Python. USB HID, Microchip Linux, . , :)



  • I²C, IPMI.
  • « » I²C- (, , GPIO), .
  • , I²C- , IPMI.
  • BMC-, IPMI, I²C Master Write-Read, .
  • , - .
  • PMBus, I²C/SMBus.

Intelligent Platform Management Interface Specification v2.0
www.intel.com/content/dam/www/public/us/en/documents/product-briefs/second-gen-interface-spec-v2.pdf

IPMItool
sourceforge.net/projects/ipmitool

I²C Bus ( telos)
www.i2c-bus.org

System Management Bus (SMBus) description
www.smbus.org/specs/smbdef.htm

PMBus, Power Management Bus
pmbus.org

FreeNAS, Enterprise-Grade Features, Open Source, BSD Licensed
www.freenas.org

SGPIO, Serial General Purpose Input/Output
www.wikipedia.org/wiki/SGPIO

SuperMicro FAQ ID 9242, Monitoring of PSU using IPMITool
www.supermicro.com/support/faqs/faq.cfm?faq=9492

LM25056, System Power Measurement IC with PMBus
www.ti.com/product/LM25056

PCF8574A, Remote 8-Bit I/O Expander for I2C-Bus
www.ti.com/product/PCF8574A

TCA9548A, Low-Voltage 8-Channel I2C Switch With Reset
www.ti.com/product/TCA9548A

BMP180, Barometric Pressure Sensor
www.bosch-sensortec.com/bst/products/all_products/bmp180

, BMP180 Barometric Pressure Sensor
41j.com/blog/2015/01/bmp180-barometric-pressure-sensor

, . SuperMicro ( X8)
3nity.ru/viewtopic.php?p=135736#p135736

FreeNAS, Script to control fan speed in response to hard drive temperatures
forums.freenas.org/index.php?threads/script-to-control-fan-speed-in-response-to-hard-drive-temperatures.41294

Computer Cheese, IPMI Messaging Support commands,
computercheese.blogspot.com/2013/05/ipmi-messaging-support-commands.html

Corsair Link
www.corsair.com/en/support/faqs/corsair-link

EEVblog Electronics Community Forum
www.eevblog.com/forum/chat/corsair-link

Source: https://habr.com/ru/post/id400729/

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