mesa 7i92H bitfile for mx4660

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6 years 9 months ago #153940 by bdelarre
mesa 7i92H bitfile for mx4660 was created by bdelarre
I'm attempting to get a 7i92H mesa ethernet card to talk to an mx4660 via the header pins to the DB25 input on the mx4660. I've found the mx4660 bitfile in the 7i92 software download, and flashed it successfully to the card, this is the result of
Code:
sudo mesaflash --device 7i92 --addr 10.10.10.10 --readhmid
Code:
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: 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 2 of IOPort in configuration Version: 0 Registers: 5 BaseAddress: 1000 ClockFrequency: 100.000 MHz Register Stride: 256 bytes Instance Stride: 4 bytes Module: QCount There are 2 of QCount in configuration Version: 2 Registers: 5 BaseAddress: 3000 ClockFrequency: 100.000 MHz Register Stride: 256 bytes Instance Stride: 4 bytes Module: StepGen There are 10 of StepGen in configuration Version: 2 Registers: 10 BaseAddress: 2000 ClockFrequency: 100.000 MHz Register Stride: 256 bytes Instance Stride: 4 bytes Module: PWM There are 2 of PWM in configuration Version: 0 Registers: 5 BaseAddress: 4100 ClockFrequency: 200.000 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 Pin# I/O Pri. func Sec. func Chan Pin func Pin Dir 1 0 IOPort None 14 1 IOPort PWM 0 PWM (Out) 2 2 IOPort StepGen 0 Step/Table1 (Out) 15 3 IOPort None 3 4 IOPort StepGen 0 Dir/Table2 (Out) 16 5 IOPort StepGen 4 Step/Table1 (Out) 4 6 IOPort StepGen 1 Step/Table1 (Out) 17 7 IOPort None 5 8 IOPort StepGen 1 Dir/Table2 (Out) 6 9 IOPort StepGen 2 Step/Table1 (Out) 7 10 IOPort StepGen 2 Dir/Table2 (Out) 8 11 IOPort StepGen 3 Step/Table1 (Out) 9 12 IOPort StepGen 3 Dir/Table2 (Out) 10 13 IOPort QCount 0 Quad-A (In) 11 14 IOPort QCount 0 Quad-B (In) 12 15 IOPort QCount 0 Quad-IDX (In) 13 16 IOPort None IO Connections for P1 Pin# I/O Pri. func Sec. func Chan Pin func Pin Dir 1 17 IOPort None 14 18 IOPort PWM 1 PWM (Out) 2 19 IOPort StepGen 5 Step/Table1 (Out) 15 20 IOPort None 3 21 IOPort StepGen 5 Dir/Table2 (Out) 16 22 IOPort StepGen 9 Step/Table1 (Out) 4 23 IOPort StepGen 6 Step/Table1 (Out) 17 24 IOPort None 5 25 IOPort StepGen 6 Dir/Table2 (Out) 6 26 IOPort StepGen 7 Step/Table1 (Out) 7 27 IOPort StepGen 7 Dir/Table2 (Out) 8 28 IOPort StepGen 8 Step/Table1 (Out) 9 29 IOPort StepGen 8 Dir/Table2 (Out) 10 30 IOPort QCount 1 Quad-A (In) 11 31 IOPort QCount 1 Quad-B (In) 12 32 IOPort QCount 1 Quad-IDX (In) 13 33 IOPort None

I brought up linuxcnc with the the example 7i92 config found in this thread forum.linuxcnc.org/27-driver-boards/3081...e-mx4660-4-axis-step and linuxcnc starts. It also powers up the stepper motors, but I'm not able to jog.

I suspect the pinout defined in the bitfile does not work with the H variant of the mesa 7i92?

From my read of the pinout table for P2 above, IO 2 is step output function mapped to pin 2, which according to the 7i92 manual ( www.mesanet.com/pdf/parallel/7i92man.pdf ) is header pin 3. Which if I connect that header to the mx4660 db25 input would end up being pin 3 on the db25 input which is x-axis dir input. So step and dir and crossed here, other pins are even more wrong.

Am I reading this right? Do i need to make a custom bit file? Anyone got one for the header outputs?

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6 years 9 months ago #153950 by PCW
Replied by PCW on topic mesa 7i92H bitfile for mx4660
If you look at the leftmost column, this is the DB25 pin so
Step 0 goes to DB25 pin 2 and Dir 0 goes to DB25 pin 3

(you will get these pinouts with a straight through HDR26 to DB25 flat cable)

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6 years 9 months ago #154119 by bdelarre
Replied by bdelarre on topic mesa 7i92H bitfile for mx4660
Thanks PCW, it does indeed work as expected.

I had mistakenly mis-read how the charge pump dip switch is configured on the mx4660 which was preventing the driver from taking any commands.

My setup now works for stepping, also have PWM control of the VFD operational, and the e-stop hooked in. Next up homing switches and calibration of stepgen settings and I should be good to go.

Thanks!

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