Chinese Mesa 7I92 from aliexpress NEW

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22 Nov 2025 11:19 - 22 Nov 2025 11:29 #338965 by Sekai
Hi.I bought a mesa card from aliexpress to power my lathe.The board works with 10.10.10.10 it pings and output that gives me with command:sudo mesaflash --device 7i92 --addr 10.10.10.10 --readhmid
configuration Name: HOSTMOT2

General configuration information:

  BoardName : MESA7I92
  FPGA Size: 9 KGates
  FPGA Pins: 144
  Number of IO Ports: 2
  Width of one I/O port: 17
  Clock Low frequency: 100.0000 MHz
  Clock High frequency: 200.0000 MHz
  IDROM Type: 3
  Instance Stride 0: 4
  Instance Stride 1: 64
  Register Stride 0: 256
  Register Stride 1: 256

Modules in configuration:

  Module: WatchDog
  There are 1 of WatchDog in configuration
  Version: 0
  Registers: 3
  BaseAddress: 0C00
  ClockFrequency: 100.000 MHz
  Register Stride: 256 bytes
  Instance Stride: 4 bytes

  Module: IOPort
  There are 2 of IOPort in configuration
  Version: 0
  Registers: 5
  BaseAddress: 1000
  ClockFrequency: 100.000 MHz
  Register Stride: 256 bytes
  Instance Stride: 4 bytes

  Module: LED
  There are 1 of LED in configuration
  Version: 0
  Registers: 1
  BaseAddress: 0200
  ClockFrequency: 100.000 MHz
  Register Stride: 256 bytes
  Instance Stride: 4 bytes

Configuration pin-out:

IO Connections for P2
DB25 pin#             I/O   Pri. func    Sec. func        Chan     Sec. Pin func   Sec. Pin Dir

 1                      0   IOPort       None           
14                      1   IOPort       None           
 2                      2   IOPort       None           
15                      3   IOPort       None           
 3                      4   IOPort       None           
16                      5   IOPort       None           
 4                      6   IOPort       None           
17                      7   IOPort       None           
 5                      8   IOPort       None           
 6                      9   IOPort       None           
 7                     10   IOPort       None           
 8                     11   IOPort       None           
 9                     12   IOPort       None           
10                     13   IOPort       None           
11                     14   IOPort       None           
12                     15   IOPort       None           
13                     16   IOPort       None           

IO Connections for P1
DB25 pin#             I/O   Pri. func    Sec. func        Chan     Sec. Pin func   Sec. Pin Dir

 1                     17   IOPort       None           
14                     18   IOPort       None           
 2                     19   IOPort       None           
15                     20   IOPort       None           
 3                     21   IOPort       None           
16                     22   IOPort       None           
 4                     23   IOPort       None           
17                     24   IOPort       None           
 5                     25   IOPort       None           
 6                     26   IOPort       None           
 7                     27   IOPort       None           
 8                     28   IOPort       None           
 9                     29   IOPort       None           
10                     30   IOPort       None           
11                     31   IOPort       None           
12                     32   IOPort       None           
13                     33   IOPort       None 

The problem is i dont know how configure linuxcnc. I have the doc from the seller uploadnow.io/f/9v0gkpb
This is my first time with mesa card.
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Last edit: 22 Nov 2025 11:29 by Sekai.

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22 Nov 2025 12:31 #338968 by unknown
Replied by unknown on topic Chinese Mesa 7I92 from aliexpress NEW
You did not buy a Mesa card. You bought a Chinese clone hoping to save some money then expecting help.
The best thing you can do is read the Linuxcnc documentation.
But any of the quirks with the card itself you are going to have get support from the vendor.
Without knowledge of the schematics no one can say whether it will operate electrically as original Mesa 7i92.
What you have done is bought a rip-off and now expecting those that are loyal to Mesa Electronics to dig you out of hole.

And to be perfectly honest there are plenty of threads regarding configuration, plenty of resources on YouTube and plenty of advice in the docs.

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22 Nov 2025 15:46 #338975 by PCW
Replied by PCW on topic Chinese Mesa 7I92 from aliexpress NEW
The basic issue is that the current firmware is just GPIO (no Step/Dir hardware etc)

There could be a couple reasons for this:

1. The wrong firmware is installed,

2. The card had corrupted firmware so has loaded the fallback firmware (which is just GPIO)

Did the card vendor supply a firmware file?, it does not look like any standard 7I92 firmware to me

If they did supply firmware, I would try re-writing it with:

mesaflash --device 7i92 --addr 10.10.10.10 --write  vendor_supplied_firmware_file_name.bit --reload

 
The following user(s) said Thank You: andypugh

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22 Nov 2025 17:14 - 22 Nov 2025 17:21 #338982 by Sekai
Replied by Sekai on topic Chinese Mesa 7I92 from aliexpress NEW
You are right.
the firmware that the seller gave me was 7i92_G540x2D_custom.bit
I did upload it but it gave an error when i started linuxcnc
 

I install Mesa Configuration Tools and download a firmware from there the 7i92_G540x2D without the custom part and it works.
For now i just tested the pin output
The next problem is when i start linuxcnc it gave me an error: Watchdog has bit!
from the post "Mesa 7i97 Watchdog has bit!"  i did latency-histogram --nobase --sbinsize 1000 and its like this:
 
 
 

btw the pc is minipc Fujitsu Esprimo Q920
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Last edit: 22 Nov 2025 17:21 by Sekai.

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22 Nov 2025 17:47 #338986 by PCW
Replied by PCW on topic Chinese Mesa 7I92 from aliexpress NEW
The watchdog error is a sign of network latency issues.

I would try:

sudo chrt 99 ping -i .001 -q-c 60000 10.10.10.10

which should run for 1 minute and then print timing statistics
to see if this is the issue.

 

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22 Nov 2025 19:08 #338994 by Sekai
Replied by Sekai on topic Chinese Mesa 7I92 from aliexpress NEW
 

I think the max value is to high.
Maybe the cpu needs to tweak?
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22 Nov 2025 23:37 #339006 by tommylight
Replied by tommylight on topic Chinese Mesa 7I92 from aliexpress NEW
Nope, the network driver needs to be changed, installing the DKMS version of the Realtek drives should fix it.
Give this a try:
sudo apt-get install r8168-dkms

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23 Nov 2025 05:35 - 23 Nov 2025 05:42 #339027 by Sekai
Replied by Sekai on topic Chinese Mesa 7I92 from aliexpress NEW
I dont think i have a realtek ethernet
 
Its a intel i217LM and i have already the latest kernel e1000e
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Last edit: 23 Nov 2025 05:42 by Sekai.

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23 Nov 2025 05:56 #339028 by rodw
Replied by rodw on topic Chinese Mesa 7I92 from aliexpress NEW

I dont think i have a realtek ethernet
Its a intel i217LM and i have already the latest kernel e1000e

With Intel, be sure to set up the coalescing settings. Type man hm2_eth and follow the instructions

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23 Nov 2025 08:27 - 23 Nov 2025 08:40 #339034 by Sekai
Replied by Sekai on topic Chinese Mesa 7I92 from aliexpress NEW
i tried with the ethtool but no change
 
after reading some more i disable AMT setting from bios but the value remain the same
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Last edit: 23 Nov 2025 08:40 by Sekai.

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