HPE D3XXX JBOD Thread

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S

Skud

Active Member
Jan 3, 2012
150
78
28
So I've been running a couple of these for a few weeks and they've been *great* - except they are a bit loud. I've been researching ways of bringing down the noise and the (18) Fun with an MD1200/MD1220 & SC200/SC220 | ServeTheHome Forums thread has inspired me to look for ways *other* than physically hacking the fans. All my disks (3TB 7200rpm) are sitting at under 30C, so there is plenty of room for adjustment.

They do have a debug/console port on the back which is just a USB-B connector with an FTDI chip on the inside. I've gained access but I wasn't able to figure out anything for fan control. There are TONS of commands and options, however. There is also a "cli-sdk" command which drops to what looks like some sort of debug shell (was hidden from the "help" in the latest update, but it still works). From here you can probe and write to the various memory/bus addresses.

I've done a cursory check of the firmware BIN and I do see a lot of information about "Thermal Profiles" and "Fan NVRAM". The firmware is "freely" available here without a support contract: Software Details | HPE Support Center and I was able to extract the BIN: "Reveille-Release-5.04-build-000.bin"

I've tried to use Ghidra, but having no experience with it I came up short. I did also try using the vxhunter script, but it wasn't able to detect anything. I'm fairly certain that it's a 32-bit MIPS arch.

That's about the extent of my knowledge with reverse engineering. I think if someone with more knowledge than I could figure this out then these disk shelves would be a *fantastic* option for a lot of people.

Binwalk shows:

Code: 
DECIMAL       HEXADECIMAL     DESCRIPTION
--------------------------------------------------------------------------------
785408        0xBFC00         MySQL MISAM index file Version 8
1833988       0x1BFC04        MySQL MISAM compressed data file Version 8
4583990       0x45F236        Unix path: /usr/local/hp/shared/boost_1_54_0/include/boost/smart_ptr/shared_ptr.hpp
4594803       0x461C73        Unix path: /home/sepuser/workspace/revellie_iss/reveille/src/reveillesmpconfiguration.cpp
4599562       0x462F0A        Unix path: /usr/local/sep/gsep/include/util/metadata/staticpropertyassignment.h
4599705       0x462F99        Unix path: /usr/local/sep/gsep/include/model/modelfactory.h
4600315       0x4631FB        Unix path: /usr/local/sep/gsep/include/model/drivebay/element/drivebay.h
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4605617       0x4646B1        Unix path: /home/sepuser/workspace/revellie_iss/reveille/src/helptextpageconfiguration.cpp
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4612313       0x4660D9        Unix path: /home/sepuser/workspace/revellie_iss/reveille/src/reveilleinterlinkconfiguration.cpp
4612482       0x466182        Unix path: /dev/uart/ttyS0
4612592       0x4661F0        Unix path: /home/sepuser/workspace/revellie_iss/reveille/src/reveilleinterlinkconfiguration.cpp
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4654416       0x470550        Unix path: /usr/local/hp/shared/boost_1_54_0/include/boost/smart_ptr/shared_ptr.hpp
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4717279       0x47FADF        Unix path: /usr/local/hp/shared/boost_1_54_0/include/boost/smart_ptr/shared_ptr.hpp
4719127       0x480217        Unix path: /usr/local/sep/gsep/include/controller/ses/sessasconnectorelementstatusupdatevisitor.h
4719846       0x4804E6        Unix path: /usr/local/hp/shared/boost_1_54_0/include/boost/smart_ptr/shared_ptr.hpp
4720094       0x4805DE        Unix path: /usr/local/hp/shared/boost_1_54_0/include/boost/smart_ptr/shared_ptr.hpp
4722031       0x480D6F        Unix path: /usr/local/hp/shared/boost_1_54_0/include/boost/smart_ptr/shared_ptr.hpp
4760650       0x48A44A        Unix path: /usr/local/hp/shared/boost_1_54_0/include/boost/smart_ptr/shared_ptr.hpp
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4808164       0x495DE4        Unix path: /usr/local/hp/shared/boost_1_54_0/include/boost/smart_ptr/shared_ptr.hpp
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4841369       0x49DF99        Unix path: /home/sepuser/workspace/revellie_iss/gsep/src/model/carrier/element/smartcarrier.cpp
4841769       0x49E129        Unix path: /home/sepuser/workspace/revellie_iss/gsep/src/model/carrier/element/smartcarrier.cpp
4842119       0x49E287        Unix path: /home/sepuser/workspace/revellie_iss/gsep/src/model/carrier/element/smartcarrier.cpp
4842929       0x49E5B1        Unix path: /usr/local/hp/shared/boost_1_54_0/include/boost/smart_ptr/shared_ptr.hpp
4843351       0x49E757        Unix path: /home/sepuser/workspace/revellie_iss/gsep/src/model/carrier/element/smartcarrier.cpp
4850660       0x4A03E4        Unix path: /usr/local/hp/shared/boost_1_54_0/include/boost/smart_ptr/shared_ptr.hpp
4851635       0x4A07B3        Unix path: /home/sepuser/workspace/revellie_iss/gsep/make/../inc/model/carrier/element/smartcarrier.h
4851781       0x4A0845        Unix path: /home/sepuser/workspace/revellie_iss/gsep/make/../inc/model/carrier/element/smartcarrier.h
4852005       0x4A0925        Unix path: /home/sepuser/workspace/revellie_iss/gsep/make/../inc/model/carrier/element/smartcarrier.h
4852160       0x4A09C0        Unix path: /home/sepuser/workspace/revellie_iss/gsep/make/../inc/model/carrier/element/smartcarrier.h
4852321       0x4A0A61        Unix path: /home/sepuser/workspace/revellie_iss/gsep/make/../inc/model/carrier/element/smartcarrier.h
4852498       0x4A0B12        Unix path: /home/sepuser/workspace/revellie_iss/gsep/src/model/carrier/element/smartcarrier.cpp
4852732       0x4A0BFC        Unix path: /home/sepuser/workspace/revellie_iss/gsep/src/model/carrier/element/smartcarrier.cpp
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4864680       0x4A3AA8        Unix path: /home/sepuser/workspace/revellie_iss/gsep/make/../inc/util/metadata/staticpropertyassignment.h
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4868467       0x4A4973        Unix path: /home/sepuser/workspace/revellie_iss/gsep/src/model/gpio/element/gpiopin.cpp
4872099       0x4A57A3        Unix path: /usr/local/hp/shared/boost_1_54_0/include/boost/smart_ptr/shared_ptr.hpp
4872512       0x4A5940        Unix path: /home/sepuser/workspace/revellie_iss/gsep/src/model/gpio/element/pca9555.cpp
4880194       0x4A7742        Unix path: /home/sepuser/workspace/revellie_iss/gsep/src/model/gpio/element/onoffswitch.cpp
4893500       0x4AAB3C        Unix path: /home/sepuser/workspace/revellie_iss/gsep/src/model/drivebay/element/smartcarrierdrivebay.cpp
4893887       0x4AACBF        Unix path: /usr/local/hp/shared/boost_1_54_0/include/boost/smart_ptr/shared_ptr.hpp
4894119       0x4AADA7        Unix path: /home/sepuser/workspace/revellie_iss/gsep/src/model/drivebay/element/smartcarrierdrivebay.cpp
4894273       0x4AAE41        Unix path: /home/sepuser/workspace/revellie_iss/gsep/src/model/drivebay/element/smartcarrierdrivebay.cpp
4897334       0x4ABA36        Unix path: /home/sepuser/workspace/revellie_iss/gsep/src/model/smartcarrier/element/smartcarriergroup.cpp
4897739       0x4ABBCB        Unix path: /home/sepuser/workspace/revellie_iss/gsep/src/model/smartcarrier/element/smartcarriergroup.cpp
4903055       0x4AD08F        Unix path: /home/sepuser/workspace/revellie_iss/gsep/make/../inc/util/metadata/dynamicindexerproperty.h
4903224       0x4AD138        Unix path: /home/sepuser/workspace/revellie_iss/gsep/make/../inc/util/metadata/dynamicindexerproperty.h
4903401       0x4AD1E9        Unix path: /home/sepuser/workspace/revellie_iss/gsep/src/model/nvram/element/basenvram.cpp
4903638       0x4AD2D6        Unix path: /home/sepuser/workspace/revellie_iss/gsep/src/model/nvram/element/basenvram.cpp
4903875       0x4AD3C3        Unix path: /home/sepuser/workspace/revellie_iss/gsep/src/model/nvram/element/basenvram.cpp
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4943155       0x4B6D33        Unix path: /home/sepuser/workspace/revellie_iss/gsep/src/model/scsitarget/other/scsicommandcontext.cpp
4943380       0x4B6E14        Unix path: /home/sepuser/workspace/revellie_iss/gsep/src/model/scsitarget/other/scsicommandcontext.cpp
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4948618       0x4B828A        Unix path: /usr/local/hp/shared/boost_1_54_0/include/boost/smart_ptr/shared_ptr.hpp
4951065       0x4B8C19        Unix path: /home/sepuser/workspace/revellie_iss/gsep/src/model/element.cpp
4951890       0x4B8F52        Unix path: /home/sepuser/workspace/revellie_iss/gsep/src/model/element.cpp
4952129       0x4B9041        Unix path: /home/sepuser/workspace/revellie_iss/gsep/src/model/element.cpp
4952248       0x4B90B8        Unix path: /home/sepuser/workspace/revellie_iss/gsep/src/model/element.cpp
4952372       0x4B9134        Unix path: /usr/local/hp/shared/boost_1_54_0/include/boost/smart_ptr/shared_ptr.hpp
4952456       0x4B9188        Unix path: /home/sepuser/workspace/revellie_iss/gsep/src/model/element.cpp
4952585       0x4B9209        Unix path: /home/sepuser/workspace/revellie_iss/gsep/src/model/element.cpp
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4953035       0x4B93CB        Unix path: /home/sepuser/workspace/revellie_iss/gsep/src/model/element.cpp
4953202       0x4B9472        Unix path: /usr/local/hp/shared/boost_1_54_0/include/boost/smart_ptr/shared_ptr.hpp
4970555       0x4BD83B        Unix path: /usr/local/hp/shared/boost_1_54_0/include/boost/smart_ptr/shared_ptr.hpp
4970899       0x4BD993        Unix path: /home/sepuser/workspace/revellie_iss/gsep/src/model/sasconnector/element/sasconnector.cpp
4975019       0x4BE9AB        Unix path: /home/sepuser/workspace/revellie_iss/gsep/make/../inc/model/phy/element/basephy.h
4988915       0x4C1FF3        Unix path: /usr/local/hp/shared/boost_1_54_0/include/boost/smart_ptr/shared_ptr.hpp
4989314       0x4C2182        Unix path: /home/sepuser/workspace/revellie_iss/gsep/make/../inc/model/sasconnector/element/managedsasconnector.h
4989577       0x4C2289        Unix path: /home/sepuser/workspace/revellie_iss/gsep/make/../inc/util/metadata/staticpropertyassignment.h
4989757       0x4C233D        Unix path: /home/sepuser/workspace/revellie_iss/gsep/make/../inc/util/metadata/staticpropertyassignment.h
4990006       0x4C2436        Unix path: /home/sepuser/workspace/revellie_iss/gsep/make/../inc/util/metadata/staticpropertyassignment.h
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5043633       0x4CF5B1        Unix path: /usr/local/hp/shared/boost_1_54_0/include/boost/smart_ptr/intrusive_ptr.hpp
5044172       0x4CF7CC        Unix path: /home/sepuser/workspace/revellie_iss/gsep/src/model/phy/element/basephy.cpp
5044455       0x4CF8E7        Unix path: /home/sepuser/workspace/revellie_iss/gsep/src/model/phy/element/basephy.cpp
5044657       0x4CF9B1        Unix path: /home/sepuser/workspace/revellie_iss/gsep/src/model/phy/element/basephy.cpp
5044859       0x4CFA7B        Unix path: /home/sepuser/workspace/revellie_iss/gsep/src/model/phy/element/basephy.cpp
5045061       0x4CFB45        Unix path: /home/sepuser/workspace/revellie_iss/gsep/src/model/phy/element/basephy.cpp
5045263       0x4CFC0F        Unix path: /home/sepuser/workspace/revellie_iss/gsep/src/model/phy/element/basephy.cpp
5045465       0x4CFCD9        Unix path: /home/sepuser/workspace/revellie_iss/gsep/src/model/phy/element/basephy.cpp
5045667       0x4CFDA3        Unix path: /home/sepuser/workspace/revellie_iss/gsep/src/model/phy/element/basephy.cpp
5045869       0x4CFE6D        Unix path: /home/sepuser/workspace/revellie_iss/gsep/src/model/phy/element/basephy.cpp
5046071       0x4CFF37        Unix path: /home/sepuser/workspace/revellie_iss/gsep/src/model/phy/element/basephy.cpp
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5047283       0x4D03F3        Unix path: /home/sepuser/workspace/revellie_iss/gsep/src/model/phy/element/basephy.cpp
5047485       0x4D04BD        Unix path: /home/sepuser/workspace/revellie_iss/gsep/src/model/phy/element/basephy.cpp
5047687       0x4D0587        Unix path: /home/sepuser/workspace/revellie_iss/gsep/src/model/phy/element/basephy.cpp
5047889       0x4D0651        Unix path: /home/sepuser/workspace/revellie_iss/gsep/src/model/phy/element/basephy.cpp
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5048259       0x4D07C3        Unix path: /home/sepuser/workspace/revellie_iss/gsep/src/model/phy/element/basephy.cpp
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5059376       0x4D3330        Unix path: /home/sepuser/workspace/revellie_iss/gsep/make/../inc/model/phy/element/basephy.h
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5059708       0x4D347C        Unix path: /home/sepuser/workspace/revellie_iss/gsep/make/../inc/model/phy/element/basephy.h
5059840       0x4D3500        Unix path: /home/sepuser/workspace/revellie_iss/gsep/make/../inc/model/phy/element/basephy.h
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5491746       0x53CC22        Unix path: /home/sepuser/workspace/revellie_iss/pmcsdk/fwcs/gSEP/gsepconnectionpoints/src/sdkbridge/physignalintegrity.c
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5492242       0x53CE12        Unix path: /home/sepuser/workspace/revellie_iss/pmcsdk/fwcs/gSEP/gsepconnectionpoints/src/sdkbridge/physignalintegrity.c
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5492743       0x53D007        Unix path: /home/sepuser/workspace/revellie_iss/pmcsdk/fwcs/gSEP/gsepconnectionpoints/src/sdkbridge/spi.c
5492891       0x53D09B        Unix path: /home/sepuser/workspace/revellie_iss/pmcsdk/fwcs/gSEP/gsepconnectionpoints/src/sdkbridge/spi.c
5493039       0x53D12F        Unix path: /home/sepuser/workspace/revellie_iss/pmcsdk/fwcs/gSEP/gsepconnectionpoints/src/sdkbridge/spi.c
5493190       0x53D1C6        Unix path: /home/sepuser/workspace/revellie_iss/pmcsdk/fwcs/gSEP/gsepconnectionpoints/src/sdkbridge/spi.c
5493341       0x53D25D        Unix path: /home/sepuser/workspace/revellie_iss/pmcsdk/fwcs/gSEP/gsepconnectionpoints/src/sdkbridge/spi.c
5493502       0x53D2FE        Unix path: /home/sepuser/workspace/revellie_iss/pmcsdk/fwcs/gSEP/gsepconnectionpoints/src/sdkbridge/spi.c
5517176       0x542F78        Unix path: /home/sepuser/workspace/revellie_iss/pmcsdk/fwcs/gSEP/gsepconnectionpoints/src/sdkbridge/zoning.c
5532212       0x546A34        Unix path: /home/sepuser/workspace/revellie_iss/pmcsdk/fwcs/sasd/src/pack/pack.c
5533852       0x54709C        Unix path: /home/sepuser/workspace/revellie_iss/pmcsdk/fwcs/sxp12g/src/ecmr/ecmr_api.c
5536252       0x5479FC        Unix path: /home/sepuser/workspace/revellie_iss/pmcsdk/fwcs/sxp12g/src/sas_analog/sas_analog_api.c
5536398       0x547A8E        Unix path: /home/sepuser/workspace/revellie_iss/pmcsdk/fwcs/sxp12g/src/sas_analog/sas_analog_api.c
5544012       0x54984C        Unix path: /home/sepuser/workspace/revellie_iss/pmcsdk/fwcs/sxp12g/src/emip/emip_int.c
5544341       0x549995        Unix path: /home/sepuser/workspace/revellie_iss/gsep/src/osal/bitpool.c
5544519       0x549A47        Unix path: /home/sepuser/workspace/revellie_iss/gsep/src/osal/bitpool.c
5544641       0x549AC1        Unix path: /home/sepuser/workspace/revellie_iss/gsep/src/osal/bitpool.c
5544763       0x549B3B        Unix path: /home/sepuser/workspace/revellie_iss/gsep/src/osal/bitpool.c
5544885       0x549BB5        Unix path: /home/sepuser/workspace/revellie_iss/gsep/src/osal/bitpool.c
5545007       0x549C2F        Unix path: /home/sepuser/workspace/revellie_iss/gsep/src/osal/bitpool.c
5545139       0x549CB3        Unix path: /home/sepuser/workspace/revellie_iss/gsep/src/osal/bitpool.c
5545334       0x549D76        Unix path: /home/sepuser/workspace/revellie_iss/gsep/src/osal/bitpool.c
5545472       0x549E00        Unix path: /home/sepuser/workspace/revellie_iss/gsep/src/osal/bitpool.c
5545745       0x549F11        Unix path: /home/sepuser/workspace/revellie_iss/gsep/src/osal/bitpool.c
5546374       0x54A186        Unix path: /home/sepuser/workspace/revellie_iss/pmcsdk/fwcs/sxp12g/src/sxp/sxp.c
5550812       0x54B2DC        IMG0 (VxWorks) header, size: 4803911
5550901       0x54B335        IMG0 (VxWorks) header, size: 795438710
5551964       0x54B75C        IMG0 (VxWorks) header, size: 536889677
5551981       0x54B76D        IMG0 (VxWorks) header, size: 793002324
5551998       0x54B77E        IMG0 (VxWorks) header, size: 793002324
5563069       0x54E2BD        Unix path: /home/sepuser/workspace/revellie_iss/pmcsdk/fwcs/soc_io/src/sgpio/sgpio.c
5563294       0x54E39E        Unix path: /home/sepuser/workspace/revellie_iss/pmcsdk/fwcs/soc_io/src/sgpio/sgpio_hw.c
5623196       0x55CD9C        Copyright string: "Copyright (c) 1996-2008 Express Logic Inc. * ThreadX MIPS32_24Kx/Green Hills Version G5.1.5.1 SN: PMC_030608 *"
5627544       0x55DE98        Copyright string: "Copyright (c) 1992-2003 by P.J. Plauger, licensed by Dinkumware, Ltd. ALL RIGHTS RESERVED."
 
S

Skud

Active Member
Jan 3, 2012
150
78
28
Have done some more prodding and investigating. I ended-up moving from Free/TrueNAS to Ubuntu 20.04. This machine is totally HP (DL380 Gen9) and I'm using HP cards (H240ar in HBA mode and H241 HBA to the D3600s). FreeBSD still relies on the old csiss driver which just gives very basic support, doesn't support SES, and randomly causes disks to drop out - they don't even have to be in a pool - they just go offline.

So, I moved to Ubuntu and things are looking much better.

I installed sg_ses and it sees both enclosures. The fans, LEDs, and all bays are present. I've tried the usual ways of controlling the fans, but the commands seem to be ignored.

sg_ses --index=coo,0 ---get=1:2:11 /dev/sg31 gives me "726". I've read that you need to multiply by 10 to get the true speed - which matches up with what I've seen in the debug console. So, 7260rpm.

sg_ses --index=coo,0 --get=3:2:3 /dev/sg31 gives a value of "3" which seems to match up with the "Fan speed is the third lowest setting".

sg_ses --index=coo,0 --set=3:2:3=7 /dev/sg31 should ramp up the fans, but it does nothing. Checking the speed again still shows "3". I've tried it with both enclosures and both controllers, no luck.

I'm thinking that the fans are purely controlled by the internal firmware.
 
S

Skud

Active Member
Jan 3, 2012
150
78
28
Well, I've been tinkering with this on and off. I've pretty-much given up on trying to hack the firmware or find a secret fan command. So, I'm going to do the next best thing and build my own fan controller. This is my first foray into makerspace on this level so it will be interesting and FUN!

I want to stress that 95% of the code here was not written by me. I've taken code from a few different projects and put it together into something that works for this use case. Credit where credit is due:

(1) Making the DL380 G7 quiet. For good. : homelab (reddit.com)
HP-fan-proxy/images at master · Max-Sum/HP-fan-proxy · GitHub
(1) I created a fan controller for my HP D2600 based on Arduino Nano for less noise : homelab (reddit.com)

Mine is going to be pretty similar, but with a few changes. The D3600 uses different connectors - they seem to be almost exactly like the fans from a DL380 Gen8. The closest connector I can find is a Molex MilliGrid. I *may* get really fancy and do the whole custom PCB/headers like the project above, but I haven't decided yet.

The control logic is:

Read PWM from host
If PWM is >= the safety value then set that as the output. This is to give back control to the D3600 if something is really hot and it's commanding a really high PWM.
Otherwise, multiply the input PWM by the correction factor
If it's above the minimum use that, otherwise use the minimum.

Each power supply has two fans and will be controlled by one Arduino. I could control both PSUs/4 fans with one Arduino but I want to keep the PSUs swappable. So, each PSU will have it's own Nano and will be self-contained.

I'm using a Noctua NA-FC1 as a PWM generator. This is a nifty little device. It will take a PWM input and modify it. One handy feature is that if there is no PWM input then it's purely a PWM controller. The NA-FC1 is only rated to 3A so I'm feeding fans 12v directly from my bench PSU.

Now, I could have saved myself a lot of trouble and just used this instead of the Arduino, but that's no fun and less flexible.

Prototyping and debugging the code...

IMG_4505.JPEG

IMG_4506.JPEG

IMG_4507.JPEG

Fans at 23% PWM
IMG_4511.JPEG

Fans at 100%
IMG_4510.JPEG


Quick test-sweep of the PWM up to the safety.

1618541648572.png

C++: 
#define portOfPin(P)\
  (((P)>=0&&(P)<8)?&PORTD:(((P)>7&&(P)<14)?&PORTB:&PORTC))
#define ddrOfPin(P)\
  (((P)>=0&&(P)<8)?&DDRD:(((P)>7&&(P)<14)?&DDRB:&DDRC))
#define pinOfPin(P)\
  (((P)>=0&&(P)<8)?&PIND:(((P)>7&&(P)<14)?&PINB:&PINC))
#define pinIndex(P)((uint8_t)(P>13?P-14:P&7))
#define pinMask(P)((uint8_t)(1<<pinIndex(P)))

#define pinAsInput(P) *(ddrOfPin(P))&=~pinMask(P)
#define pinAsInputPullUp(P) *(ddrOfPin(P))&=~pinMask(P);digitalHigh(P)
#define pinAsOutput(P) *(ddrOfPin(P))|=pinMask(P)
#define digitalLow(P) *(portOfPin(P))&=~pinMask(P)
#define digitalHigh(P) *(portOfPin(P))|=pinMask(P)
#define isHigh(P)((*(pinOfPin(P))& pinMask(P))>0)
#define isLow(P)((*(pinOfPin(P))& pinMask(P))==0)
#define digitalState(P)((uint8_t)isHigh(P))

#define fixTime(t)((uint16_t)t*64)

// Port A1, A2 (Analog) PWM input
// Port 9, 10 (Digital) PWM output
const uint8_t fans[2][2] = {
  {A1, 9},
  {A2, 10},
};

// Commanded PWM at which we give back control to the host (ie. something is very hot..)
const float safetyPWM=0.75;

// The correction factor for the PWM signal
double cor_fact[2]={0.65,0.65};

// Minimum PWM to run the fans
static float min_fan[2] = {0.20, 0.20};
float fan_val[6];

// Number of samples to take for calculating the PWM input value.
const int sample = 25000;

void setup() {
  uint8_t i;
  for (i = 0; i < 2; i++) {
    pinAsInput(fans[i][0]);
    pinAsOutput(fans[i][1]);
  }
  // Set to 31.25kHz to reach 25kHz requirement
  TCCR0B = _BV(CS00);
  TCCR1B = _BV(CS00);
  TCCR2B = _BV(CS00);
  TCCR0A = _BV(COM0A1) | _BV(COM0B1) | _BV(WGM00);
  Serial.begin(115200);
  Serial.println("HP fan proxy");

}

float readPWM(int pin) {
  uint32_t total = 0;
  uint32_t low = 0;
  for (uint16_t i = 0; i < sample; i++) {
    low += isLow(pin);
    total ++;
  }
  // NOTE: HP/iLO uses inversed PWM
  return (float) low / total;
}

void loop()
{
  float out;
  uint8_t pwm_out;
  for (uint8_t i = 0; i < 2; i++)
  {
    fan_val[i] = readPWM(fans[i][0]);
    
    if(fan_val[i] < safetyPWM)
    {
      out = fan_val[i] * cor_fact[i];
      if (out < min_fan[i])
      {
        out = min_fan[i];
      }
    }
    else // System is commanding greater than 0.75 so we should let it take over.
    {
      out = fan_val[i];
    }
 
    pwm_out = 255 - out * 255;
    analogWrite(fans[i][1], pwm_out);
    Serial.print("Fan["); Serial.print(i + 1); Serial.print("] D3600:"); Serial.print(fan_val[i] * 100); Serial.print("% Out:"); Serial.print(out * 100); Serial.print("% Diff:"); Serial.print((fan_val[i] - out) * 100); Serial.println("%");
  }
  //Serial.println("---");
  delay(fixTime(5000));
}
 
M

maxwlang

New Member
Mar 12, 2023
3
0
1
Sorry to necro but I'm currently working through this process myself and was wondering if you ever tried serial connections over the mfg USB port on the controllers? Like the Dell MD1200, the Mfg port exposes a serial interface, unlike the Dell MD1200, the HPE D3600 exposes four serial connections. Here's what I've gathered from them so far:

  • Serial Connection 1 -- This appears to be one of the controllers
    • Baud 115200
    • Provides a prompt called SEP:A
    • help command provides a detailed list of commands with descriptions
      • You may get additional details on a command by inquiring with the help command: help <command>
      • [*]
        TargetCommand
        <blank>help, echo, version, memory, setlog, sdkcli, sysstatus, blockpooldump
        abmmoduleshow
        apmmoduleshow
        backuprestoreshow, clearbackup
        codeloadshowstatus, release
        daughtercardshow
        displayshow, set, get
        drivebaysimulate, show, showstats, set
        dynamicloglevel, reset, enable, disable, read, show, clear
        enclosureread, show
        espcodeload, reset, show, request, cli
        expanderreset, show, smp
        fanmoduleshow
        fanrotorshow
        fpgacodeload, disable, show
        gpioread, show, showstats, set, clear
        i2cread, write, writeread
        initiatorshow
        interlinkping
        iomoduleshow, set
        ledshow, showstats, set
        nvramread, printtags, setbasenumbering, setsingledomain, write, show, clear, modify, fixcrc, restore
        partnerespshow
        partneriomoduleshow
        partnersepshow
        phyenable, disable, show, setedgebuffering, showstats, clearerrorcounters, resetcoeff, setmc
        phyerrormonitorenable, disable, show
        powersupplyshow, set
        rackshow
        redriverread, write
        sasconnectorshow
        scsisetjammer, disablejammer, showjammer
        sepshow, set, clock, crash, updatesesstatus, performance, forcescsiresponse, stopforcingscsiresponse, sobsize, assert
        sesdump, control, showinitiators
        smartcarrierreset, show, showstats, refresh, set, frr, reset, authenticate
        spiread, write
        taskmanagerenable, disable, show, hang
        temperaturesensorread, show, showstats
        uartread, write, showstats
        vfsnewfile, cat, mkdir, write, erase, ls, read, seek, partition
        watchdogshowstatus, disable, enable
        [*]
  • Serial Connection 2 -- This appears to be one of the fan modules
    • Baud 115200
    • Provides a prompt called ESP:A
    • help command provides a very vague list of commands without descriptions
      • You can not get additional details on a command with help <command>
      • Running the help command prints an unnerving warning at the very end of the list:
        !!!Disable EM loop before run any I2C commands!
      • [*]
        Command
        help
        version
        dbg
        ri2c
        wi2c
        rio
        wio
        ri2c2
        wi2c2
        rio2
        wio2
        setfan
        disablewrfan
        gettemp
        psstat
        power
        rnvram
        wnvram
        rack
        dbgcom
        arbstats
        reset
        setthermal
        hdlcmsg
        mngled
        simfail
        plotevents
        fixnvramcs
        hangthisesp
        setarbtimeout
        getarbtimeout
        [*]
  • Serial Connection 3 -- Unknown
    • Does not respond to common baud rates
  • Serial Connection 4 -- Unknown
    • Does not respond to common baud rates

I've managed to change the fan speed by running the `setfan` command on the ESP:A prompt, unfortunately it reverts pretty shortly after and doesn't seem to control power supply fan speed:

Code: 
setfan 20


WARNING: You need to disable the fan writing on the other domain to make it work.
run command "disablewrfan" from other IOM



Fans set to 20%
 
Last edited:
S

Skud

Active Member
Jan 3, 2012
150
78
28
One of the interesting things is that I noticed the PSU fans always seem to be loud, but it does ramp up/down with temperature. They're the same PSU as a DL360/380 server and when utilized in that manner they're quiet. So, something in the shelf is controlling the PSU fan speed.
 
M

maxwlang

New Member
Mar 12, 2023
3
0
1
Holy shit! Appreciate that quick reply! Yeah that's something I was afraid of.. Did you happen to investigate an Adruino solution to that as well or would you consider it pretty manageable?
 
S

Skud

Active Member
Jan 3, 2012
150
78
28
Yeah, I got the Arduino fully working and it works very well - except for the PSU fan. It’s not overly loud, just whiny.

I’ll try and grab some pics.
 
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