Setting up 7i97t w idc26 bob

I can’t figure out how to set up a bob on the 7i97t.
It’s just a  simple pass through breakout.
Can I use the idc26/bob with normal 7i97t firmware?

I was trying to set it up using my existing hal file, but I don’t know what the idc pins are. Like the equivalent of hm2_7197.0.ssr.00.out-1 or hm2_7197.0.inmux.00.input-1.

Ive tried setting it up in mesact with both 7i97t_d.bin and 7i97t_5abobd.bin, but inputs/outputs 16+ are grayed out.

I also tried with pncconf. If I use the inputs/outputs in the io3 tab, then linuxcnc won’t launch saying they don’t exist. 


 

If you just need GPIO all 17 P1 I/O pins are available as GPIO
with the default firmware.

The GPIO numbers vs P1 pins are listed in the .pin file:

IO Connections for P1 -> 7I97_2
Pin#                          I/O   Pri. func    Sec. func        Chan     Sec. Pin func   Sec. Pin Dir

P1-01/DB25-01          34   IOPort       None           
P1-02/DB25-14          35   IOPort       None           
P1-03/DB25-02          36   IOPort       None           
P1-04/DB25-15          37   IOPort       None           
P1-05/DB25-03          38   IOPort       None           
P1-06/DB25-16          39   IOPort       None           
P1-07/DB25-04          40   IOPort       None           
P1-08/DB25-17          41   IOPort       None           
P1-09/DB25-05          42   IOPort       None           
P1-11/DB25-06          43   IOPort       None           
P1-13/DB25-07          44   IOPort       None           
P1-15/DB25-08          45   IOPort       None           
P1-17/DB25-09          46   IOPort       None           
P1-19/DB25-10          47   IOPort       None           
P1-21/DB25-11          48   IOPort       None           
P1-23/DB25-12          49   IOPort       None           
P1-25/DB25-13          50   IOPort       None       

Each GPIO pin (GPIO 50 = DB25-13 shown here)
Will have three hal pins available for connections
in your hal file:

hm2_7i97.0.gpio.050.in
hm2_7i97.0.gpio.050.in_not
hm2_7i97.0.gpio.050.out

and three parameters that need to be set
appropriately if the GPIO pin is an outrput

hm2_7i97.0.gpio.050.is_output
hm2_7i97.0.gpio.050.invert_output
hm2_7i97.0.gpio.050.is_opendrain

All GPIO pins startup as inputs so the "is_output"
parameter must be set "true" for any GPIO pin you wish
to use as an output
    

 

What I’m trying to do is to hook up a bts7690 h bridge to drive a dc motor.
So i think need more than just gpio. I was under the impression I could treat it like a parallel port using pwmgen/stepgen.
If i load the firmware 7i97t_5abobd.bin(the only choice I see in  mesact for bob) linuxcnc fails to load with the message-
hm2_7i97.0.pwmgen.00.dither not found.
Which is for my servos that are connected to the 7i97, not the bob.

If I just ignore that for now, I see 
Io pin 036 (p-1-04/DB25-15): StepGen #0, pin Step (output)
How would that look in Hal?
hm2_7197.0.stepgen.00?
If I wanted to use a pwm, I’d need a firmware that starts at pwmgen #07? since pwmgen.00-.06 are already used for the 9t97?

I will potentially get a different bob and replace the dc motor with a stepper/servo and driver, but I’m just messing around with what I have, trying to learn something.  

The 7i97t_5abob firmware likely predates the PWM dither option
Here is firmware that includes the PWM dither option:

 

This also brings out the PWM direction pin (It was left as GPIO
on the previous firmware)

Note when connecting 7I97T P1 pins to a power device
(that will likely have large negative switching spikes)
Its a good idea to add a say 100 Ohm series resistor
to all P1 interface pins used to avoid damage to the
input clamp diodes

I tried to use the files you sent, but I’m still having the dither not found error.
I replaced both the .bin and .vhd files in the file directory.
I then used mesact to flash.
I assume I’m skipping a step.

Andy, thanks. That will definitely get used.
 

Did you do a reload or power cycle after writing the firmware?
 

Yep. Tried reload in mesact, tried restarting the computer, power cycled the 7i97t, in every combination, together and separate.
but I also tried flashing 7i97t_d.bin and linuxcnc starts without the error every time.
Then I’ll try 7i97t_5abobd.bin and it I get the same error.