7i96s + Chinese BOB on P1
05 Jan 2024 12:34 #289858
by Mud
7i96s + Chinese BOB on P1 was created by Mud
Hi all, I've read what similar threads I could find on the 7i96, but couldn't get sufficiently confident (and those were mostly related to making PWM work) - can I connect the ubiquitous Chinese breakout board to a 7i96s P1 port without issue? Hopefully without changing the bitfile - I'm only after additional basic IO, primarily the inputs.
I think the inputs are NPN style and commoned to the 12-24v breakout board power input, but not sure if that's isolated from the parallel port - if anyone knows if it's safe please confirm/deny! I don't have the board yet.
I think the inputs are NPN style and commoned to the 12-24v breakout board power input, but not sure if that's isolated from the parallel port - if anyone knows if it's safe please confirm/deny! I don't have the board yet.
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05 Jan 2024 13:39 #289863
by andypugh
Replied by andypugh on topic 7i96s + Chinese BOB on P1
The pinout for P1 is given on Page 7 of the manual:
www.mesanet.com/pdf/parallel/7i96sman.pdf
It does appear to be a standard parallel port pinout, except that all non-GND pins are bidirectional.
Depending on the firmware flashed on the 7i96 you might need to limit some functions in order to have their associated pins become available as outputs.
And you will also need to set up the input / output direction to match the hardwired directions of the BoB.
Which firmware are you using?
www.mesanet.com/pdf/parallel/7i96sman.pdf
It does appear to be a standard parallel port pinout, except that all non-GND pins are bidirectional.
Depending on the firmware flashed on the 7i96 you might need to limit some functions in order to have their associated pins become available as outputs.
And you will also need to set up the input / output direction to match the hardwired directions of the BoB.
Which firmware are you using?
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05 Jan 2024 13:41 #289864
by andypugh
Replied by andypugh on topic 7i96s + Chinese BOB on P1
If you don't have the BoB yet, then the 7i84 is a good way to add more GPIO (and it still leaves P1 free as it attached to the serial expansion)
It's more expensive than a BoB, but also offers more.
It's more expensive than a BoB, but also offers more.
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05 Jan 2024 14:11 #289866
by Mud
Replied by Mud on topic 7i96s + Chinese BOB on P1
The 7i96s is running the firmware it came with - I'm struggling to find if I can pull the specific firmware name from the card, but this is the dump from mesaflash:
A 7i84 would be lovely, but I would need to buy it with some other hardware to get over the current landed import cost to the UK. I will get one at some stage, and probably make a more featured MCP.
Configuration Name: HOSTMOT2
General configuration information:
BoardName : MESA7I96
FPGA Size: 20 KGates
FPGA Pins: 256
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: OutM
There are 1 of OutM in configuration
Version: 0
Registers: 1
BaseAddress: B000
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 5 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: SSR
There are 1 of SSR in configuration
Version: 0
Registers: 2
BaseAddress: 7D00
ClockFrequency: 100.000 MHz
Register Stride: 256 bytes
Instance Stride: 4 bytes
Module: InM
There are 1 of InM in configuration
Version: 0
Registers: 5
BaseAddress: 8500
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 TB3 -> 7I96_0
Pin# I/O Pri. func Sec. func Chan Sec. Pin func Sec. Pin Dir
TB3-1 0 IOPort InM 0 Input0 (In)
TB3-2 1 IOPort InM 0 Input1 (In)
TB3-3 2 IOPort InM 0 Input2 (In)
TB3-4 3 IOPort InM 0 Input3 (In)
TB3-5 4 IOPort InM 0 Input4 (In)
TB3-6 5 IOPort InM 0 Input5 (In)
TB3-7 6 IOPort InM 0 Input6 (In)
TB3-8 7 IOPort InM 0 Input7 (In)
TB3-9 8 IOPort InM 0 Input8 (In)
TB3-10 9 IOPort InM 0 Input9 (In)
TB3-11 10 IOPort InM 0 Input10 (In)
TB3-13,14 11 IOPort SSR 0 Out-00 (Out)
TB3-15,16 12 IOPort SSR 0 Out-01 (Out)
TB3-17,18 13 IOPort SSR 0 Out-02 (Out)
TB3-19,20 14 IOPort SSR 0 Out-03 (Out)
TB3-21,22 15 IOPort OutM 0 Output4 (Out)
TB3-23,24 16 IOPort OutM 0 Output5 (Out)
IO Connections for TB1/TB2 -> 7I96_1
Pin# I/O Pri. func Sec. func Chan Sec. Pin func Sec. Pin Dir
TB1-2,3 17 IOPort StepGen 0 Step/Table1 (Out)
TB1-4,5 18 IOPort StepGen 0 Dir/Table2 (Out)
TB1-8,9 19 IOPort StepGen 1 Step/Table1 (Out)
TB1-10,11 20 IOPort StepGen 1 Dir/Table2 (Out)
TB1-14,15 21 IOPort StepGen 2 Step/Table1 (Out)
TB1-16,17 22 IOPort StepGen 2 Dir/Table2 (Out)
TB1-20,21 23 IOPort StepGen 3 Step/Table1 (Out)
TB1-22,23 24 IOPort StepGen 3 Dir/Table2 (Out)
TB2-2,3 25 IOPort StepGen 4 Step/Table1 (Out)
TB2-4,5 26 IOPort StepGen 4 Dir/Table2 (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)
TB2-16,17 30 IOPort SSerial 0 RXData0 (In)
TB2-18,19 31 IOPort SSerial 0 TXData0 (Out)
Internal-TXEn 32 IOPort SSerial 0 TXEn0 (Out)
Internal 33 IOPort SSR 0 AC Ref (Out)
IO Connections for P1 -> 7I96_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 A 7i84 would be lovely, but I would need to buy it with some other hardware to get over the current landed import cost to the UK. I will get one at some stage, and probably make a more featured MCP.
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05 Jan 2024 14:25 #289868
by andypugh
Replied by andypugh on topic 7i96s + Chinese BOB on P1
It looks like all pins on P1 (IO 34-50) are unallocated in your firmware, so it should be straightforward to use the BoB.
Re 7i84
Maybe there is an opening for a UK stockist. It used to be the case that EU suppliers (like eusurplus.com/index.php?route=product/pr..._61_74&product_id=59 ) were just as good, but I am not sure that still works as well)
Re 7i84
Maybe there is an opening for a UK stockist. It used to be the case that EU suppliers (like eusurplus.com/index.php?route=product/pr..._61_74&product_id=59 ) were just as good, but I am not sure that still works as well)
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05 Jan 2024 14:50 #289869
by Mud
Replied by Mud on topic 7i96s + Chinese BOB on P1
I get a better price buying from the US, but they're out of stock 
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05 Jan 2024 15:45 #289875
by PCW
Replied by PCW on topic 7i96s + Chinese BOB on P1
7I84Ds are available and Mesa should have 7I84s in a few weeks
You can use 7i96s_5abobd firmware if you want additional step/dir
outputs or PWM/Analog on the Mach3 BOB
You can use 7i96s_5abobd firmware if you want additional step/dir
outputs or PWM/Analog on the Mach3 BOB
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