Where to start with Mesa 7i92 + 7i85S

Jrjones
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21 Nov 2015 03:31 #65592 by Jrjones

Where to start with Mesa 7i92 + 7i85S was created by Jrjones

Hi,

To replace a Protrak M3 controller whose driver board crapped out, I decided to go with LinuxCNC, based on information that I could find to keep using the existing servo drives to keep costs low, and talking to Mesa Electronics and this thread: forum.linuxcnc.org/forum/30-cnc-machines...ch-boards-mesa#64026

Currently I'm waiting for the 7i92 and 7i85S to arrive so I'm running a virtual machine with Debian Wheezy and LinuxCNC 2.7.2 to get used to how to configure and operate LinuxCNC before having the hardware.

I'm a little lost on how to configure LinuxCNC for the 7i92 and 7i85S though, since they are not yet supported by PCNConf Wizard.
From searching I believe I'm supposed to edit a HAL file, is there a how to on this somewhere?
The servo drives expect a 15.5kHz differential PWM signal instead of a more traditional step/direction input.

Another question I have, the servos have their own encoders, and there are also glass scales fitted on the axis as well. Should I use the glass scales in addition to the encoders for feedback and position info?

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Rick G
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21 Nov 2015 07:00 #65593 by Rick G

Replied by Rick G on topic Where to start with Mesa 7i92 + 7i85S

Have you looked here...
www.linuxcnc.org/docs/2.6/pdf/LinuxCNC_HAL_Manual.pdf
linuxcnc.org/docs/2.5/html/hal/basic_hal.html
linuxcnc.org/docs/html/hal/tutorial.html

Rick G

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techrat
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21 Nov 2015 13:24 #65600 by techrat

Replied by techrat on topic Where to start with Mesa 7i92 + 7i85S

Hi there,

Glad to see you pulled the trigger on this conversion! I had started the thread you linked to in your original post. I have not yet however ordered the boards primarily due to time constraints and number of other projects. I will be following along closely with your progress on this and will be glad to offer my assistance in any way possible. I would love nothing more that to help you be wildly successful with your project and learn some things to improve my chances for success on my conversion.

I can certainly offer to be a fallback "control" case for your "experiment" in that I am not going to start taking my machine apart yet so if you need signals, connection info etc after you take the plunge, I will be glad to help with that. Also, I will be glad to collaborate on the hal files with you. I have never worked with the hal files but will need to for my conversion so am willing to invest in learning about them.

On the subject of the motor encoders versus scales, I have motor encoders and trak wheels on my machine so essentially two feedback sources as well. If I had the glass scales, I would be inclined to use them for feedback as they in effect cancel out mechanical backlash and indicate the truest movement of your axis. I am a little skeptical of my Trak wheels but am still undecided on how to approach this. I believe there is a way to use both feedback sources but from what I have heard it seems more complicated.

I look forward to follow along with your progress and help in any way that I can. Please feel free to PM me if you prefer.

The following user(s) said Thank You: Jrjones

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Jrjones
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06 Jan 2016 23:13 #67989 by Jrjones

Replied by Jrjones on topic Where to start with Mesa 7i92 + 7i85S

Ok, I got the boards from Mesa just before the holidays, and now I finally have some time to sit down to figure things out.

I've installed LinuxCNC Debian Wheezy on my laptop for testing, and am able to ping the 7I92 board.
That's about as far as I've gotten, I honestly have no idea how to proceed from here.

From what I've read the easiest would be to use the PNCconf utility to make a config for a 5I25 card and change the naming and addressing to the 7I92 after.
But I'm not sure how I would configure a 5I25 board with a 7I85S daugtherboard.

I've read and worked through the basic hal tutorial, and I think I understand what to use the halcmd for, but I'm not quite at that stage yet.

This is how I intend to connect the servos/encoders to the 7I85S:

I'm going to continue on by reading how to use mesaflash and maybe that will give me some insight on how to proceed.

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andypugh
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07 Jan 2016 00:25 #67994 by andypugh

Replied by andypugh on topic Where to start with Mesa 7i92 + 7i85S

Mesaflash is only needed if you have the wrong firmware.
With any luck the installed firmware is on a sticker on the board.

Have you read this?
linuxcnc.org/docs/2.7/html/man/man9/hm2_eth.9.html

One way to get some useful information. Open a terminal:

halrun
loadrt hostmot2
loadrt hm2_eth board_ip=192.168.1.121
show pin
exit

You will either get a nice list of all your HAL pins, or a string of error messages.

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Jrjones
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07 Jan 2016 01:03 #67995 by Jrjones

Replied by Jrjones on topic Where to start with Mesa 7i92 + 7i85S

I didn't see that, thanks.

I tried to get the info for the HAL pins, but i get the following message:

halcmd: loadrt hm2_eth board_ip=192.168.1.121
<stdin>:4: Can't find module 'hm2_eth' in /usr/realtime-3.4-9-rtai-686-pae/modules/linuxcnc

Does the hm2_eth support the 7I92? The documentation says it is for the 7I80DB and 7I80HD

I'm not sure if I have my ethernet port setup right, I have it set as:
Connection name: eth1
under IPV4 Settings,
Address: 192.168.1.24
Netmask: 255.255.255.0
Gateway: 192.168.1.1

Is that correct? I'm not familiar with the wording of "network 192.168.1/24" so I might have my port settings incorrect.

The only sticker I have on the board is the board type, mac address, and barcode,
but I was able to get the some board info via mesaflash.

root@debian:~# mesaflash --device 7I92 --verbose

ETH device 7I92 at ip=192.168.1.121
Communication:
  transport layer: ethernet IPv4 UDP
  ip address: 192.168.1.121
  mac address: 00:60:1B:11:00:4D
  protocol: LBP16 version 3
Board info:
  Flash size: 16Mb (id: 0x14)
  Connectors count: 2
  Pins per connector: 17
  Connectors names: P2 P1
  FPGA type: 6slx9tqg144
  Number of leds: 4
Board firmware info:
  memory spaces:
    0: HostMot2 (registers, RW, 32-bit) [size=64K]
    1: KSZ8851 (registers, RW, 16-bit) [size=256]
    2: EtherEEP (EEPROM, RW, 16-bit) [size=128], page size: 1, erase size: 1
    3: FPGAFlsh (flash, RW, 32-bit) [size=16M], page size: 256, erase size: 65536
    4: Timers (memory, RW, 16-bit) [size=16]
    6: LBP16RW (memory, RW, 16-bit) [size=16]
    7: LBP16RO (memory, RO, 16-bit) [size=16]
  [space 0] HostMot2
  [space 2] Ethernet eeprom:
    mac address: 00:60:1B:11:00:4D
    ip address: 10.10.10.10
    board name: 7I92
    user leds: eth debug
  [space 3] FPGA flash eeprom:
    flash size: 16Mb (id: 0x14)
  [space 4] timers:
    uSTimeStampReg: 0x2487
    WaituSReg: 0x0000
    HM2Timeout: 0x0000
  [space 6] LBP16 control/status:
    packets received: all 1820, UDP 22, bad 0
    packets sended: all 31, UDP 22, bad 0
    parse errors: 0, mem errors 0, write errors 0
    error flags: 0x0000
    debug LED ptr: 0x0008
    scratch: 0x0000
  [space 7] LBP16 info:
    board name: 7I92
    LBP16 protocol version 3
    board firmware version 15
    IP address jumpers at boot: fixed 192.168.1.121

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andypugh
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07 Jan 2016 01:08 - 07 Jan 2016 01:14 #67997 by andypugh

Replied by andypugh on topic Where to start with Mesa 7i92 + 7i85S

You can't use hm2_eth with the RTAI kernel. You need the preempt-rt kernel.

You should be able to start from step 2 here:
linuxcnc.org/docs/2.7/html/getting-start...th_preempt_rt_kernel

(You basically need to install a new kernel and a different variant of LinuxCNC to match it. But it ought to be fairly straightforward)

Step 6 could be clearer. You can do what it suggests in the Synaptic package manager. (System->Synaptic Package Manager. Then Settings->Repositories: Other Software tab, and the Add button
Or edit//create the /etc/apt/sources.list.d/linuxcnc.list file

Last edit: 07 Jan 2016 01:14 by andypugh.

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Jrjones
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07 Jan 2016 01:45 #68000 by Jrjones

Replied by Jrjones on topic Where to start with Mesa 7i92 + 7i85S

Awesome, I remembered reading about that a few months ago but forgot about it.
I'm slowly getting the hang of this.

Component Pins:
Owner   Type  Dir         Value  Name
     9  float IN            100  hm2_7i92.0.dpll.01.timer-us
     9  float IN            100  hm2_7i92.0.dpll.02.timer-us
     9  float IN            100  hm2_7i92.0.dpll.03.timer-us
     9  float IN            100  hm2_7i92.0.dpll.04.timer-us
     9  float IN             -1  hm2_7i92.0.dpll.base-freq-khz
     9  u32   OUT    0x00000000  hm2_7i92.0.dpll.ddsize
     9  float OUT             0  hm2_7i92.0.dpll.phase-error-us
     9  u32   IN     0x00400000  hm2_7i92.0.dpll.plimit
     9  u32   OUT    0x00000001  hm2_7i92.0.dpll.prescale
     9  u32   IN     0x000007D0  hm2_7i92.0.dpll.time-const
     9  s32   OUT             0  hm2_7i92.0.encoder.00.count
     9  s32   OUT             0  hm2_7i92.0.encoder.00.count-latched
     9  bit   I/O         FALSE  hm2_7i92.0.encoder.00.index-enable
     9  bit   OUT          TRUE  hm2_7i92.0.encoder.00.input-a
     9  bit   OUT          TRUE  hm2_7i92.0.encoder.00.input-b
     9  bit   OUT         FALSE  hm2_7i92.0.encoder.00.input-index
     9  bit   IN          FALSE  hm2_7i92.0.encoder.00.latch-enable
     9  bit   IN          FALSE  hm2_7i92.0.encoder.00.latch-polarity
     9  float OUT             0  hm2_7i92.0.encoder.00.position
     9  float OUT             0  hm2_7i92.0.encoder.00.position-latched
     9  bit   OUT         FALSE  hm2_7i92.0.encoder.00.quad-error
     9  bit   IN          FALSE  hm2_7i92.0.encoder.00.quad-error-enable
     9  s32   OUT             0  hm2_7i92.0.encoder.00.rawcounts
     9  s32   OUT             0  hm2_7i92.0.encoder.00.rawlatch
     9  bit   IN          FALSE  hm2_7i92.0.encoder.00.reset
     9  float OUT             0  hm2_7i92.0.encoder.00.velocity
     9  u32   IN     0x017D7840  hm2_7i92.0.encoder.sample-frequency
     9  bit   OUT         FALSE  hm2_7i92.0.gpio.000.in
     9  bit   OUT          TRUE  hm2_7i92.0.gpio.000.in_not
     9  bit   OUT         FALSE  hm2_7i92.0.gpio.001.in
     9  bit   OUT          TRUE  hm2_7i92.0.gpio.001.in_not
     9  bit   OUT         FALSE  hm2_7i92.0.gpio.002.in
     9  bit   OUT          TRUE  hm2_7i92.0.gpio.002.in_not
     9  bit   OUT         FALSE  hm2_7i92.0.gpio.003.in
     9  bit   OUT          TRUE  hm2_7i92.0.gpio.003.in_not
     9  bit   OUT         FALSE  hm2_7i92.0.gpio.004.in
     9  bit   OUT          TRUE  hm2_7i92.0.gpio.004.in_not
     9  bit   OUT         FALSE  hm2_7i92.0.gpio.005.in
     9  bit   OUT          TRUE  hm2_7i92.0.gpio.005.in_not
     9  bit   OUT         FALSE  hm2_7i92.0.gpio.006.in
     9  bit   OUT          TRUE  hm2_7i92.0.gpio.006.in_not
     9  bit   OUT         FALSE  hm2_7i92.0.gpio.007.in
     9  bit   OUT          TRUE  hm2_7i92.0.gpio.007.in_not
     9  bit   OUT         FALSE  hm2_7i92.0.gpio.008.in
     9  bit   OUT          TRUE  hm2_7i92.0.gpio.008.in_not
     9  bit   OUT         FALSE  hm2_7i92.0.gpio.009.in
     9  bit   OUT          TRUE  hm2_7i92.0.gpio.009.in_not
     9  bit   OUT          TRUE  hm2_7i92.0.gpio.010.in
     9  bit   OUT         FALSE  hm2_7i92.0.gpio.010.in_not
     9  bit   IN          FALSE  hm2_7i92.0.gpio.010.out
     9  bit   OUT          TRUE  hm2_7i92.0.gpio.011.in
     9  bit   OUT         FALSE  hm2_7i92.0.gpio.011.in_not
     9  bit   IN          FALSE  hm2_7i92.0.gpio.011.out
     9  bit   OUT          TRUE  hm2_7i92.0.gpio.012.in
     9  bit   OUT         FALSE  hm2_7i92.0.gpio.012.in_not
     9  bit   IN          FALSE  hm2_7i92.0.gpio.012.out
     9  bit   OUT          TRUE  hm2_7i92.0.gpio.013.in
     9  bit   OUT         FALSE  hm2_7i92.0.gpio.013.in_not
     9  bit   IN          FALSE  hm2_7i92.0.gpio.013.out
     9  bit   OUT          TRUE  hm2_7i92.0.gpio.014.in
     9  bit   OUT         FALSE  hm2_7i92.0.gpio.014.in_not
     9  bit   OUT          TRUE  hm2_7i92.0.gpio.015.in
     9  bit   OUT         FALSE  hm2_7i92.0.gpio.015.in_not
     9  bit   OUT          TRUE  hm2_7i92.0.gpio.016.in
     9  bit   OUT         FALSE  hm2_7i92.0.gpio.016.in_not
     9  bit   OUT          TRUE  hm2_7i92.0.gpio.017.in
     9  bit   OUT         FALSE  hm2_7i92.0.gpio.017.in_not
     9  bit   IN          FALSE  hm2_7i92.0.gpio.017.out
     9  bit   OUT          TRUE  hm2_7i92.0.gpio.018.in
     9  bit   OUT         FALSE  hm2_7i92.0.gpio.018.in_not
     9  bit   IN          FALSE  hm2_7i92.0.gpio.018.out
     9  bit   OUT          TRUE  hm2_7i92.0.gpio.019.in
     9  bit   OUT         FALSE  hm2_7i92.0.gpio.019.in_not
     9  bit   IN          FALSE  hm2_7i92.0.gpio.019.out
     9  bit   OUT          TRUE  hm2_7i92.0.gpio.020.in
     9  bit   OUT         FALSE  hm2_7i92.0.gpio.020.in_not
     9  bit   IN          FALSE  hm2_7i92.0.gpio.020.out
     9  bit   OUT          TRUE  hm2_7i92.0.gpio.021.in
     9  bit   OUT         FALSE  hm2_7i92.0.gpio.021.in_not
     9  bit   IN          FALSE  hm2_7i92.0.gpio.021.out
     9  bit   OUT          TRUE  hm2_7i92.0.gpio.022.in
     9  bit   OUT         FALSE  hm2_7i92.0.gpio.022.in_not
     9  bit   IN          FALSE  hm2_7i92.0.gpio.022.out
     9  bit   OUT          TRUE  hm2_7i92.0.gpio.023.in
     9  bit   OUT         FALSE  hm2_7i92.0.gpio.023.in_not
     9  bit   IN          FALSE  hm2_7i92.0.gpio.023.out
     9  bit   OUT          TRUE  hm2_7i92.0.gpio.024.in
     9  bit   OUT         FALSE  hm2_7i92.0.gpio.024.in_not
     9  bit   IN          FALSE  hm2_7i92.0.gpio.024.out
     9  bit   OUT          TRUE  hm2_7i92.0.gpio.025.in
     9  bit   OUT         FALSE  hm2_7i92.0.gpio.025.in_not
     9  bit   IN          FALSE  hm2_7i92.0.gpio.025.out
     9  bit   OUT          TRUE  hm2_7i92.0.gpio.026.in
     9  bit   OUT         FALSE  hm2_7i92.0.gpio.026.in_not
     9  bit   IN          FALSE  hm2_7i92.0.gpio.026.out
     9  bit   OUT          TRUE  hm2_7i92.0.gpio.027.in
     9  bit   OUT         FALSE  hm2_7i92.0.gpio.027.in_not
     9  bit   IN          FALSE  hm2_7i92.0.gpio.027.out
     9  bit   OUT          TRUE  hm2_7i92.0.gpio.028.in
     9  bit   OUT         FALSE  hm2_7i92.0.gpio.028.in_not
     9  bit   IN          FALSE  hm2_7i92.0.gpio.028.out
     9  bit   OUT          TRUE  hm2_7i92.0.gpio.029.in
     9  bit   OUT         FALSE  hm2_7i92.0.gpio.029.in_not
     9  bit   IN          FALSE  hm2_7i92.0.gpio.029.out
     9  bit   OUT          TRUE  hm2_7i92.0.gpio.030.in
     9  bit   OUT         FALSE  hm2_7i92.0.gpio.030.in_not
     9  bit   IN          FALSE  hm2_7i92.0.gpio.030.out
     9  bit   OUT          TRUE  hm2_7i92.0.gpio.031.in
     9  bit   OUT         FALSE  hm2_7i92.0.gpio.031.in_not
     9  bit   IN          FALSE  hm2_7i92.0.gpio.031.out
     9  bit   OUT          TRUE  hm2_7i92.0.gpio.032.in
     9  bit   OUT         FALSE  hm2_7i92.0.gpio.032.in_not
     9  bit   IN          FALSE  hm2_7i92.0.gpio.032.out
     9  bit   OUT          TRUE  hm2_7i92.0.gpio.033.in
     9  bit   OUT         FALSE  hm2_7i92.0.gpio.033.in_not
     9  bit   IN          FALSE  hm2_7i92.0.gpio.033.out
     9  bit   IN          FALSE  hm2_7i92.0.led.CR01
     9  bit   IN          FALSE  hm2_7i92.0.led.CR02
     9  bit   IN          FALSE  hm2_7i92.0.led.CR03
     9  bit   IN          FALSE  hm2_7i92.0.led.CR04
     9  s32   OUT             0  hm2_7i92.0.read-request.time
     9  s32   OUT             0  hm2_7i92.0.read.time
     9  bit   IN          FALSE  hm2_7i92.0.stepgen.00.control-type
     9  s32   OUT             0  hm2_7i92.0.stepgen.00.counts
     9  float OUT             0  hm2_7i92.0.stepgen.00.dbg_err_at_match
     9  float OUT             0  hm2_7i92.0.stepgen.00.dbg_ff_vel
     9  float OUT             0  hm2_7i92.0.stepgen.00.dbg_pos_minus_prev_cmd
     9  float OUT             0  hm2_7i92.0.stepgen.00.dbg_s_to_match
     9  s32   OUT             0  hm2_7i92.0.stepgen.00.dbg_step_rate
     9  float OUT             0  hm2_7i92.0.stepgen.00.dbg_vel_error
     9  bit   IN          FALSE  hm2_7i92.0.stepgen.00.enable
     9  float IN              0  hm2_7i92.0.stepgen.00.position-cmd
     9  float OUT             0  hm2_7i92.0.stepgen.00.position-fb
     9  float IN              0  hm2_7i92.0.stepgen.00.velocity-cmd
     9  float OUT             0  hm2_7i92.0.stepgen.00.velocity-fb
     9  bit   IN          FALSE  hm2_7i92.0.stepgen.01.control-type
     9  s32   OUT             0  hm2_7i92.0.stepgen.01.counts
     9  float OUT             0  hm2_7i92.0.stepgen.01.dbg_err_at_match
     9  float OUT             0  hm2_7i92.0.stepgen.01.dbg_ff_vel
     9  float OUT             0  hm2_7i92.0.stepgen.01.dbg_pos_minus_prev_cmd
     9  float OUT             0  hm2_7i92.0.stepgen.01.dbg_s_to_match
     9  s32   OUT             0  hm2_7i92.0.stepgen.01.dbg_step_rate
     9  float OUT             0  hm2_7i92.0.stepgen.01.dbg_vel_error
     9  bit   IN          FALSE  hm2_7i92.0.stepgen.01.enable
     9  float IN              0  hm2_7i92.0.stepgen.01.position-cmd
     9  float OUT             0  hm2_7i92.0.stepgen.01.position-fb
     9  float IN              0  hm2_7i92.0.stepgen.01.velocity-cmd
     9  float OUT             0  hm2_7i92.0.stepgen.01.velocity-fb
     9  bit   IN          FALSE  hm2_7i92.0.stepgen.02.control-type
     9  s32   OUT             0  hm2_7i92.0.stepgen.02.counts
     9  float OUT             0  hm2_7i92.0.stepgen.02.dbg_err_at_match
     9  float OUT             0  hm2_7i92.0.stepgen.02.dbg_ff_vel
     9  float OUT             0  hm2_7i92.0.stepgen.02.dbg_pos_minus_prev_cmd
     9  float OUT             0  hm2_7i92.0.stepgen.02.dbg_s_to_match
     9  s32   OUT             0  hm2_7i92.0.stepgen.02.dbg_step_rate
     9  float OUT             0  hm2_7i92.0.stepgen.02.dbg_vel_error
     9  bit   IN          FALSE  hm2_7i92.0.stepgen.02.enable
     9  float IN              0  hm2_7i92.0.stepgen.02.position-cmd
     9  float OUT             0  hm2_7i92.0.stepgen.02.position-fb
     9  float IN              0  hm2_7i92.0.stepgen.02.velocity-cmd
     9  float OUT             0  hm2_7i92.0.stepgen.02.velocity-fb
     9  bit   IN          FALSE  hm2_7i92.0.stepgen.03.control-type
     9  s32   OUT             0  hm2_7i92.0.stepgen.03.counts
     9  float OUT             0  hm2_7i92.0.stepgen.03.dbg_err_at_match
     9  float OUT             0  hm2_7i92.0.stepgen.03.dbg_ff_vel
     9  float OUT             0  hm2_7i92.0.stepgen.03.dbg_pos_minus_prev_cmd
     9  float OUT             0  hm2_7i92.0.stepgen.03.dbg_s_to_match
     9  s32   OUT             0  hm2_7i92.0.stepgen.03.dbg_step_rate
     9  float OUT             0  hm2_7i92.0.stepgen.03.dbg_vel_error
     9  bit   IN          FALSE  hm2_7i92.0.stepgen.03.enable
     9  float IN              0  hm2_7i92.0.stepgen.03.position-cmd
     9  float OUT             0  hm2_7i92.0.stepgen.03.position-fb
     9  float IN              0  hm2_7i92.0.stepgen.03.velocity-cmd
     9  float OUT             0  hm2_7i92.0.stepgen.03.velocity-fb
     9  bit   IN          FALSE  hm2_7i92.0.stepgen.04.control-type
     9  s32   OUT             0  hm2_7i92.0.stepgen.04.counts
     9  float OUT             0  hm2_7i92.0.stepgen.04.dbg_err_at_match
     9  float OUT             0  hm2_7i92.0.stepgen.04.dbg_ff_vel
     9  float OUT             0  hm2_7i92.0.stepgen.04.dbg_pos_minus_prev_cmd
     9  float OUT             0  hm2_7i92.0.stepgen.04.dbg_s_to_match
     9  s32   OUT             0  hm2_7i92.0.stepgen.04.dbg_step_rate
     9  float OUT             0  hm2_7i92.0.stepgen.04.dbg_vel_error
     9  bit   IN          FALSE  hm2_7i92.0.stepgen.04.enable
     9  float IN              0  hm2_7i92.0.stepgen.04.position-cmd
     9  float OUT             0  hm2_7i92.0.stepgen.04.position-fb
     9  float IN              0  hm2_7i92.0.stepgen.04.velocity-cmd
     9  float OUT             0  hm2_7i92.0.stepgen.04.velocity-fb
     9  s32   IN             -1  hm2_7i92.0.stepgen.timer-number
     9  bit   I/O         FALSE  hm2_7i92.0.watchdog.has_bit
     9  s32   OUT             0  hm2_7i92.0.write.time

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PCW
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07 Jan 2016 02:15 #68002 by PCW

Replied by PCW on topic Where to start with Mesa 7i92 + 7i85S

You probably want this firmware:
7i92_7i85sx2D.bit

which you fetch from mesa and install with mesaflash

sudo apt-get install mesaflash

mesaflash --device 7i92 --write 7i92_7i85sx2D.bit (write the 7I92 flash memory with 7I85S firmware)
mesaflash --device 7i92 --reload (load the FPGA with the new firmware)
mesaflash --device 7i92 --readhmid (read out the current pinout/modules)

(I think mesaflash will use the default 192.168.1.121 IP address if not specified,
if not or if you changed the 7I92s IP address, you need to add the address to the mesaflash command line)

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andypugh
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07 Jan 2016 11:45 #68012 by andypugh

Replied by andypugh on topic Where to start with Mesa 7i92 + 7i85S

Jrjones wrote:

Component Pins:
Owner   Type  Dir         Value  Name
     9  float IN            100  hm2_7i92.0.dpll.01.timer-us
     9  float IN            100  hm2_7i92.0.dpll.02.timer-us
     9  float IN            100  hm2_7i92.0.dpll.03.timer-us
     9  float IN            100  hm2_7i92.0.dpll.04.timer-us
     9  float IN             -1  hm2_7i92.0.dpll.base-freq-khz
     9  u32   OUT    0x00000000  hm2_7i92.0.dpll.ddsize
     9  float OUT             0  hm2_7i92.0.dpll.phase-error-us
     9  u32   IN     0x00400000  hm2_7i92.0.dpll.plimit
     9  u32   OUT    0x00000001  hm2_7i92.0.dpll.prescale
     9  u32   IN     0x000007D0  hm2_7i92.0.dpll.time-const
     9  s32   OUT             0  hm2_7i92.0.encoder.00.count
    ...

So, if you create a 5i25 configuration as a way to get the right file structure, you can then go through the INI and HAL files changing the pin names to suit the ones from the list. You may also need to use the "show param" command to get the HAL parameters (various settings that don't change during operation).

As PCW said, getting a bitfile to suit your application might be necessary.

There should be a listing somewhere of how the Mesa functions are mapped to the hardware pins on the 7i92. This is in dmesg with RTAI, but I don't know where it ends up with rt-preempt.

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Where to start with Mesa 7i92 + 7i85S

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