Pimping the mini-lathe

tommylight
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6 years 3 months ago #175881 by tommylight

Replied by tommylight on topic Pimping the mini-lathe

Pin5 only.
Pin 6 is direction and your board does not use that.
Gnd goes from Mesa gnd to pwm board gnd.

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RotarySMP
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6 years 3 months ago #175882 by RotarySMP

Replied by RotarySMP on topic Pimping the mini-lathe

Thanks Tommy.

The 7i96 is connected with ethernet, flashed with 7i96d_1pwm and communicating normally with Linux. P3 is powered with 5V. With LinuxCNC running, I used HALShow to:

Code:

setp hm2_7i96.0.pwmgen.00.enable true

and

Code:

setp hm2_7i96.0.pwmgen.00.value 50

According to the manual TB1-1 would normally be a ground. but according to MESA Flash readhmid, it is now the Step signal for Stepgen 0. Where do you find a GND once you use a non-standard bitfile?
Using my Osci, I cant see a 50% square wave (or any other signal) between TB1-1 and TB1-5

Also is it normal that the Mesaflash readhmid shows nothing on TB2 or TB3? Shouldn't all the generic I/O pins still show up? The read out from Mesaflash readhmid is very different to the one you posted for 7i96d_1pwm.
***edit***
I also just noticed that this readhmid readout shows only single ended connections for the encoder, whereas there should be pairs for differential connection.

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RotarySMP
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6 years 3 months ago #175883 by RotarySMP

Replied by RotarySMP on topic Pimping the mini-lathe

The ICSTATION PWM-analog board I am using only accepts PWM signals between 1kHz and 3kHz. What is the PWM frequency which the 7i96 ouputs?

+++edit+++
Found this:
forum.linuxcnc.org/39-pncconf/38723-pncc...tting-up-pwm-on-7i96

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tommylight
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6 years 3 months ago #175888 by tommylight

Replied by tommylight on topic Pimping the mini-lathe

Your Mesa pinout shows "transformer" and that is something i have not seen before !
From what i gather, the PWM output should be on the STEP4 header, so there is the GND and the PWM.
So TB2, pin 1 GND and pin 3 PWM+ should go to the pwm board.
The frequency can be set in hal.

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RotarySMP
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6 years 3 months ago #175889 by RotarySMP

Replied by RotarySMP on topic Pimping the mini-lathe

I flashed the 7i96_1pwm bit file last week, and from the video I took it looked like I did the right one, but the result is very different than sample PCW posted here last week.
forum.linuxcnc.org/26-turning/38280-pimp...the?start=140#175545

I think I'll flash it again, and see if it returns a different result.
Mark

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RotarySMP
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6 years 3 months ago #175896 by RotarySMP

Replied by RotarySMP on topic Pimping the mini-lathe

I reflashed it, but no change...

Code:

minilathe@minilathe:~/Downloads/7i96/configs/hostmot2$ dir
7i96_5abob_d.bit     7i96_6enc_d.bit  7i96_7i77d.bit  7i96_7i85sd.bit	  7i96d_1pwm.pin  7i96_fallback.bit    7i96_inmd.bit	 7i96_pktd.bit
7i96_5abob_d.pin     7i96_6enc_d.pin  7i96_7i78d.bit  7i96_7i85sinmd.bit  7i96d.bit	  7i96_fallback.pin    7i96_inmd_dp.bit  7i96_pktd.pin
7i96_5abob_inmd.bit  7i96_7i76d.bit   7i96_7i78d.pin  7i96_7i89d.bit	  7i96d.pin	  7i96_g540dpl.bit     7i96_inmd_dp.pin  source
7i96_5abob_inmd.pin  7i96_7i76d.pin   7i96_7i85d.bit  7i96d_1pwm.bit	  7i96dpl.bit	  7i96_inm_7i85sd.bit  7i96_inmd.pin
minilathe@minilathe:~/Downloads/7i96/configs/hostmot2$ mesaflash --device 7i96 --addr 10.10.10.10 --write 7i96d_1pwm.bit
Checking file... OK
  File type: BIT file
Boot sector OK
EEPROM sectors to write: 6, max sectors in area: 16
Erasing EEPROM sectors starting from 0x100000...
  |EEEEEE
Programming EEPROM sectors starting from 0x100000...
  |WWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWW
Board configuration updated successfully.
Checking file... OK
  File type: BIT file
Boot sector OK
Verifying EEPROM sectors starting from 0x100000...
  |VVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVV
Board configuration verified successfully.

You must power cycle the hardware or use the --reload command to load a new firmware.
minilathe@minilathe:~/Downloads/7i96/configs/hostmot2$ mesaflash --device 7i96 --addr 10.10.10.10 --reload
minilathe@minilathe:~/Downloads/7i96/configs/hostmot2$ 
minilathe@minilathe:~/Downloads/7i96/configs/hostmot2$ mesaflash --device 7i96 --addr 10.10.10.10 --readhmid
Configuration Name: HOSTMOT2

General configuration information:

  BoardName : MESA7I96
  FPGA Size: 9 KGates
  FPGA Pins: 144
  Number of IO Ports: 3
  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: DPLL
  There are 1 of DPLL in configuration
  Version: 0
  Registers: 7
  BaseAddress: 7000
  ClockFrequency: 100.000 MHz
  Register Stride: 256 bytes
  Instance Stride: 4 bytes

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

  Module: PWM
  There are 1 of PWM in configuration
  Version: 0
  Registers: 5
  BaseAddress: 4100
  ClockFrequency: 200.000 MHz
  Register Stride: 256 bytes
  Instance Stride: 4 bytes

  Module: StepGen
  There are 4 of StepGen in configuration
  Version: 2
  Registers: 10
  BaseAddress: 2000
  ClockFrequency: 100.000 MHz
  Register Stride: 256 bytes
  Instance Stride: 4 bytes

  Module: QCount
  There are 1 of QCount in configuration
  Version: 2
  Registers: 5
  BaseAddress: 3000
  ClockFrequency: 100.000 MHz
  Register Stride: 256 bytes
  Instance Stride: 4 bytes

  Module: SSerial
  There are 1 of SSerial in configuration
  Version: 0
  Registers: 6
  BaseAddress: 5B00
  ClockFrequency: 100.000 MHz
  Register Stride: 256 bytes
  Instance Stride: 64 bytes

  Module: Transformer
  There are 1 of Transformer in configuration
  Version: 0
  Registers: 2
  BaseAddress: 7D00
  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 P1
Pin#  I/O   Pri. func    Sec. func       Chan      Pin func        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       Transformer      0        Drive           (Out)
 9     12   IOPort       Transformer      0        Ref             (Out)
10     13   IOPort       Transformer      0        Null3           (Out)
11     14   IOPort       Transformer      0        Null4           (Out)
12     15   IOPort       Transformer      0        Null5           (Out)
13     16   IOPort       Transformer      0        Null6           (Out)

IO Connections for TB1
Pin#  I/O   Pri. func    Sec. func       Chan      Pin func        Pin Dir

 1     17   IOPort       StepGen          0        Step/Table1     (Out)
14     18   IOPort       StepGen          0        Dir/Table2      (Out)
 2     19   IOPort       StepGen          1        Step/Table1     (Out)
15     20   IOPort       StepGen          1        Dir/Table2      (Out)
 3     21   IOPort       StepGen          2        Step/Table1     (Out)
16     22   IOPort       StepGen          2        Dir/Table2      (Out)
 4     23   IOPort       StepGen          3        Step/Table1     (Out)
17     24   IOPort       StepGen          3        Dir/Table2      (Out)
 5     25   IOPort       PWM              0        PWM             (Out)
 6     26   IOPort       PWM              0        Dir             (Out)
 7     27   IOPort       QCount           0        Quad-A          (In)
 8     28   IOPort       QCount           0        Quad-B          (In)
 9     29   IOPort       QCount           0        Quad-IDX        (In)
10     30   IOPort       SSerial          0        RXData1         (In)
11     31   IOPort       SSerial          0        TXData1         (Out)
12     32   IOPort       SSerial          0        TXEn1           (Out)
Segmentation fault (core dumped)
minilathe@minilathe:~/Downloads/7i96/configs/hostmot2$ 

This is from the 7i96.zip file on the MESAnet 7i96 webpage. Could it be that there is a different version of this bitfile I should be using?

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PCW
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6 years 3 months ago #175897 by PCW

Replied by PCW on topic Pimping the mini-lathe

Code:

TB2 2,3                25   IOPort       PWM              0        PWM             (Out)
TB2 4,5                26   IOPort       PWM              0        Dir             (Out)
TB2 7,8                27   IOPort       QCount           0        Quad-A          (In)
TB2 10,11              28   IOPort       QCount           0        Quad-B          (In)
TB2 13,14              29   IOPort       QCount           0        Quad-IDX        (In)

TB2 pins 2 and 3 are the PWM outputs (- and + respectively)

You need to update mesaflash to get the TB numbers:

github.com/LinuxCNC/mesaflash

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RotarySMP
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6 years 3 months ago #175899 by RotarySMP

Replied by RotarySMP on topic Pimping the mini-lathe

I only just installed mesaflash using the instructions for that github link. What do I need to do differently to get the most current version?

Is there any documentation on the PWM setup? I just found:
Basic PWM setup:
setp hm2_7i96.0.pwmgen.pwm_frequency 10000
setp hm2_7i96.0.pwmgen.00.scale 24000 # full scale is 24000 RPM
setp hm2_7i96.0.pwmgen.00.output-type 1 # standard PWM and direction

And was wondering what the outut type is for only PWM in only one direction? or do I just use this and ignore the direction part?

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PCW
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6 years 3 months ago #175900 by PCW

Replied by PCW on topic Pimping the mini-lathe

It sounds like you did not install the latest mesaflash (so you are using the old one)
after building mesaflash, did you run "sudo make install" ?

git clone github.com/LinuxCNC/mesaflash.git
cd mesaflash
make
sudo make install

And yes standard PWM (mode 1) is correct

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RotarySMP
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6 years 3 months ago #175901 by RotarySMP

Replied by RotarySMP on topic Pimping the mini-lathe

I followed the lines of the git instructions one by one, including make including the four list. When I repeat them

minilathe@minilathe:~$ git clone github.com/LinuxCNC/mesaflash.git
fatal: destination path 'mesaflash' already exists and is not an empty directory.
minilathe@minilathe:~$ cd mesaflash
minilathe@minilathe:~/mesaflash$ make
make: Nothing to be done for 'all'.
minilathe@minilathe:~/mesaflash$ sudo make install
[sudo] password for minilathe:
install -p -D --mode=0755 --owner root --group root mesaflash /bin/mesaflash
install -p -D --mode=0644 --owner root --group root mesaflash.1 /share/man/man1/mesaflash.1
minilathe@minilathe:~/mesaflash$

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