Difference between revisions of "Open Data Acquisition System"

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 +
<video type="youtube">-W31AJnIPHI</video>
 +
 
[[file:DIGIO32-I2C_P1994_720px.jpg]]
 
[[file:DIGIO32-I2C_P1994_720px.jpg]]
  
 
== Features ==
 
== Features ==
  
−
The Open Data Acquisition System features a powerful combination of Open Hardware and Open Software to access low level hardware interfaces from a Host Computer.
+
* This document is the ODAS (Open Data Acquisition System) card design specification
 +
* ODAS features a powerful combination of Open Hardware and Open Software
 +
** ODAS form factor is an open form factor which provides an inexpensive and small card size (approx 4" square)
 +
* Standalone use or control low level hardware interfaces from a Host Computer
 +
* Mix and match card types
  
−
=== Block Diagram ===
+
=== ODAS System Block Diagram ===
  
 
The Open Data Acquisition System consists of a Data Acquisition Processor (DAP) and I/O cards.  
 
The Open Data Acquisition System consists of a Data Acquisition Processor (DAP) and I/O cards.  
Line 13: Line 19:
 
[[File:ODAS Block Diagram.png]]
 
[[File:ODAS Block Diagram.png]]
  
−
== Maximum Configuration ==
+
=== Maximum Configuration ===
  
 
* MCP23017 (16 port I/O expander) uses (1) I2C address in range 0x20-0x27
 
* MCP23017 (16 port I/O expander) uses (1) I2C address in range 0x20-0x27
Line 34: Line 40:
 
* Industry-Standard USB Host Interface
 
* Industry-Standard USB Host Interface
 
* Industry-Standard I2C Bus Interface to cards
 
* Industry-Standard I2C Bus Interface to cards
−
* ODAS card design specification
 
−
** ODAS form factor is an open form factor which provides an inexpensive and small card size (approx 4" square)
 
−
** Mix and match card types
 
−
 
−
== Open Software ==
 
−
 
−
* USB Interface runs industry standard Firmata
 
−
* Processor card runs Arduino Leonardo compatible software
 
−
* Arduino "[http://playground.arduino.cc/Main/WireLibraryDetailedReference Wire]" Standard I2C bit driver
 
−
* Community supported [http://land-boards.com/blwiki/index.php?title=ODAS_Python_Driver Python], C++, Ruby, LabView, VxWorks drivers
 
−
 
−
== Personality EEPROM ==
 
−
 
−
* Useful when there are a lot of I2C cards in a system
 
−
** Useful in card test
 
−
** Configure the card once, autodetect later
 
−
* EEPROM I2C base address = 0x50
 
−
** I2C address offset (0x50-0x57) set by jumpers for MCP23008/MCP23017 I2C port expanders
 
−
* [https://www.mouser.com/ProductDetail/579-24LC024-P 24LC024 EEPROM]
 
−
** 256x8
 
−
** 2.5-5.5 V
 
−
** Maximum Clock Frequency: 400 kHz
 
−
** Supply Current - Max: 3 mA
 
−
* Based on [https://github.com/raspberrypi/hats/blob/master/eeprom-format.md Raspberry Pi Hat Spec]
 
−
<pre>
 
−
struct eep_vals
 
−
{
 
−
  char signature[4]; // 0-3 - "ODAS" in ASCII
 
−
  byte fmt_version;  // 4 - EEPROM data format version (0x00 reserved, 0x01 = first version)
 
−
  byte rsvd;        // 5 - set to 0
 
−
  short numatoms;    // 6-7 - set to 2
 
−
  long eeplen;      // 8-11 - set to 96 dec
 
−
  byte uuid[16];    // 12-27 - "0000000000000000" in ASCII
 
−
  short pid;        // 28-29 - See PID table
 
−
  byte vslen;        // 30 - set to 32 dec
 
−
  byte pslen;        // 31 - set to 32 dec
 
−
  byte vstr[32];    // 32-63 - Vendor Null terminated String
 
−
  byte pstr[32];    // 64-95 - Product Null terminated String
 
−
};
 
−
</pre>
 
−
 
−
* Addresses 96-255 are user programable
 
−
* Addresses 0-95 can be changed by user (if desired)
 
−
 
−
=== Product ID Table ===
 
−
 
−
<pre>
 
−
Signature=ODAS
 
−
Vendor=land.boards.com
 
−
</pre>
 
−
<pre>
 
−
ProductID (in dec) Product (string)
 
−
1 DigIO16-I2C
 
−
2 DIGIO-128
 
−
3      DIGIO-128/64
 
−
4 OptoIn8-I2C
 
−
5 OptoOut8-I2C
 
−
6 DIGIO32-I2C
 
−
7 PROTO16-I2C
 
−
8 ODAS-PSOC5
 
−
9 ODAS-RELAY16
 
−
127    NEW CARD
 
−
</pre>
 
  
−
== Mechanicals ==
+
=== Mechanicals ===
  
 
<video type="youtube">yfm2ZRHHBAg</video>
 
<video type="youtube">yfm2ZRHHBAg</video>
Line 111: Line 54:
 
** 49x49mm has (4) 4-40 holes
 
** 49x49mm has (4) 4-40 holes
  
−
 
+
==== 95x95mm Form Factor ====
−
=== 95x95mm Form Factor ===
 
  
 
* 6-32 screw holes in each corner
 
* 6-32 screw holes in each corner
Line 118: Line 60:
 
[[file:ODAS_95mm_Mechs.PNG]]
 
[[file:ODAS_95mm_Mechs.PNG]]
  
−
=== 49x49mm Form Factor ===
+
==== 49x49mm Form Factor ====
  
 
* 4-40 screw holes in each corner
 
* 4-40 screw holes in each corner
Line 124: Line 66:
 
[[file:ODAS_49mm_Mechs.PNG]]
 
[[file:ODAS_49mm_Mechs.PNG]]
  
−
=== Mixed 95x95mm and 49x49mm cards ===
+
==== Mixed 95x95mm and 49x49mm cards ====
  
 
* [[CARRIER95TO49MM|95mm to 49mm Adapter card]]
 
* [[CARRIER95TO49MM|95mm to 49mm Adapter card]]
Line 130: Line 72:
 
[[file:P1748-CROPPED-720PX.jpg]]
 
[[file:P1748-CROPPED-720PX.jpg]]
  
−
== Drivers ==
+
== Open Software ==
 +
 
 +
* USB Interface runs industry standard Firmata
 +
* Processor card runs Arduino Leonardo compatible software
 +
* Arduino "[http://playground.arduino.cc/Main/WireLibraryDetailedReference Wire]" Standard I2C bit driver
 +
* Community supported [http://land-boards.com/blwiki/index.php?title=ODAS_Python_Driver Python], C++, Ruby, LabView, VxWorks drivers
 +
 
 +
=== Drivers ===
  
−
=== Arduino ===
+
==== Arduino ====
  
 
* [https://github.com/adafruit/Adafruit-MCP23008-library Adafruit MCP23008 driver]
 
* [https://github.com/adafruit/Adafruit-MCP23008-library Adafruit MCP23008 driver]
 
* [https://github.com/adafruit/Adafruit-MCP23017-Arduino-Library Adafruit MCP23017 driver]
 
* [https://github.com/adafruit/Adafruit-MCP23017-Arduino-Library Adafruit MCP23017 driver]
  
−
==== Host Software - Firmata ====
+
===== Host Software - Firmata =====
  
−
[http://www.firmata.org/ Firmata] is a [http://www.firmata.org/wiki/Protocol generic protocol] for communicating with microcontrollers from software on a host computer. It is intended to work with any host computer software package. Right now there is a matching object in a number of languages. It is easy to add objects for other software to use this protocol. Basically, this firmware establishes a protocol for talking to the Arduino from the host software. The aim is to allow people to completely control the Arduino from software on the host computer.
+
[https://github.com/firmata Firmata] is a [https://github.com/firmata/protocol generic protocol] for communicating with microcontrollers from software on a host computer. It is intended to work with any host computer software package. Right now there is a matching object in a number of languages. It is easy to add objects for other software to use this protocol. Basically, this firmware establishes a protocol for talking to the Arduino from the host software. The aim is to allow people to completely control the Arduino from software on the host computer.
  
 
Firmata has an [http://www.firmata.org/wiki/Main_Page#Firmata_Test_Program attractive Test Program User Interface] which could be easily extended
 
Firmata has an [http://www.firmata.org/wiki/Main_Page#Firmata_Test_Program attractive Test Program User Interface] which could be easily extended
Line 145: Line 94:
 
[[File:Firmata_test_screenshot.png]]
 
[[File:Firmata_test_screenshot.png]]
  
−
=== Raspberry Pi ===
+
==== Raspberry Pi ====
  
 
* [http://www.raspberrypi-spy.co.uk/2014/11/enabling-the-i2c-interface-on-the-raspberry-pi/ Enabling The I2C Interface On The Raspberry Pi]
 
* [http://www.raspberrypi-spy.co.uk/2014/11/enabling-the-i2c-interface-on-the-raspberry-pi/ Enabling The I2C Interface On The Raspberry Pi]
Line 151: Line 100:
 
* [https://github.com/adafruit/Adafruit-Raspberry-Pi-Python-Code Adafruit library code for Raspberry Pi]
 
* [https://github.com/adafruit/Adafruit-Raspberry-Pi-Python-Code Adafruit library code for Raspberry Pi]
  
−
==== lsmod dump with DIGIO-128 card attached ====
+
===== lsmod dump with DIGIO-128 card attached =====
  
 
<pre>
 
<pre>
Line 169: Line 118:
 
</pre>
 
</pre>
  
−
==== Raspberry Pi Performance with DIGIO-128 card attached ====
+
===== Raspberry Pi Performance with DIGIO-128 card attached =====
  
 
* sudo python Adafruit_MCP230xx.py
 
* sudo python Adafruit_MCP230xx.py
Line 184: Line 133:
 
[[File:RPi-I2C-DIGIO-128-overall-rmw-2cycles.png]]
 
[[File:RPi-I2C-DIGIO-128-overall-rmw-2cycles.png]]
  
−
=== ESP32 MicroPython Drivers ===
+
==== ESP32 MicroPython Drivers ====
  
 
* [https://github.com/land-boards/lb-Python-Code/tree/master/MicroPython/ESP32/libraries MicroPython Drivers and Libraries for ODAS cards]
 
* [https://github.com/land-boards/lb-Python-Code/tree/master/MicroPython/ESP32/libraries MicroPython Drivers and Libraries for ODAS cards]
  
−
=== PyBoard MicroPython Drivers ===
+
==== PyBoard MicroPython Drivers ====
  
 
* [https://github.com/land-boards/lb-Python-Code/tree/master/MicroPython/PyBoard%20Clone MicroPython Drivers and Libraries for ODAS cards]
 
* [https://github.com/land-boards/lb-Python-Code/tree/master/MicroPython/PyBoard%20Clone MicroPython Drivers and Libraries for ODAS cards]
 +
 +
==== Raspberry Pi Pico ====
 +
 +
* [https://github.com/land-boards/RasPiPico/tree/main/PicoMite_MMBASIC/PicoMite_VGA/Land%20Boards%20BASIC%20Programs/lbcards MMBasic example code]
 +
 +
=== Personality EEPROM ===
 +
 +
* Useful when there are a lot of I2C cards in a system
 +
** Useful in card test
 +
** Configure the card once, autodetect later
 +
* EEPROM I2C base address = 0x50
 +
** I2C address offset (0x50-0x57) set by jumpers for MCP23008/MCP23017 I2C port expanders
 +
* [https://www.mouser.com/ProductDetail/579-24LC024-P 24LC024 EEPROM]
 +
** 256x8
 +
** 2.5-5.5 V
 +
** Maximum Clock Frequency: 400 kHz
 +
** Supply Current - Max: 3 mA
 +
* Based on [https://github.com/raspberrypi/hats/blob/master/eeprom-format.md Raspberry Pi Hat Spec]
 +
<pre>
 +
struct eep_vals
 +
{
 +
  char signature[4]; // 0-3 - "ODAS" in ASCII
 +
  byte fmt_version;  // 4 - EEPROM data format version (0x00 reserved, 0x01 = first version)
 +
  byte rsvd;        // 5 - set to 0
 +
  short numatoms;    // 6-7 - set to 2
 +
  long eeplen;      // 8-11 - set to 96 dec
 +
  byte uuid[16];    // 12-27 - "0000000000000000" in ASCII
 +
  short pid;        // 28-29 - See PID table
 +
  byte vslen;        // 30 - set to 32 dec
 +
  byte pslen;        // 31 - set to 32 dec
 +
  byte vstr[32];    // 32-63 - Vendor Null terminated String
 +
  byte pstr[32];    // 64-95 - Product Null terminated String
 +
};
 +
</pre>
 +
 +
* Addresses 96-255 are user programable
 +
* Addresses 0-95 can be changed by user (if desired)
 +
 +
==== Product ID Table ====
 +
 +
<pre>
 +
Signature=ODAS
 +
Vendor=land.boards.com
 +
</pre>
 +
<pre>
 +
ProductID (in dec) Product (string)
 +
1 DigIO16-I2C
 +
2 DIGIO-128
 +
3      DIGIO-128/64
 +
4 OptoIn8-I2C
 +
5 OptoOut8-I2C
 +
6 DIGIO32-I2C
 +
7 PROTO16-I2C
 +
8 ODAS-PSOC5
 +
9 ODAS-RELAY16
 +
127    NEW CARD
 +
</pre>
  
 
== Cards ==
 
== Cards ==

Latest revision as of 10:34, 2 June 2022

DIGIO32-I2C P1994 720px.jpg

Features

  • This document is the ODAS (Open Data Acquisition System) card design specification
  • ODAS features a powerful combination of Open Hardware and Open Software
    • ODAS form factor is an open form factor which provides an inexpensive and small card size (approx 4" square)
  • Standalone use or control low level hardware interfaces from a Host Computer
  • Mix and match card types

ODAS System Block Diagram

The Open Data Acquisition System consists of a Data Acquisition Processor (DAP) and I/O cards.

The block diagram is:

ODAS Block Diagram.png

Maximum Configuration

  • MCP23017 (16 port I/O expander) uses (1) I2C address in range 0x20-0x27
  • I2C supports up to 8 MCP23017 I2C addresses typically
  • Up to 64 cards can be supported with a single [I2C-RPT-08|8 port I2C repeater]]
  • Up to 8 of 8 port I2C repeaters can be used

Open Hardware

Mechanicals

  • Standardized form factor and mechanicals
  • Two basic form factors
    • 95x95mm
    • 49x49mm
  • Adapter to allow both form factors to be used
    • Solid mounting holea
    • 95x95mm has (4) 6-32 holes
    • 49x49mm has (4) 4-40 holes

95x95mm Form Factor

  • 6-32 screw holes in each corner

ODAS 95mm Mechs.PNG

49x49mm Form Factor

  • 4-40 screw holes in each corner

ODAS 49mm Mechs.PNG

Mixed 95x95mm and 49x49mm cards

P1748-CROPPED-720PX.jpg

Open Software

  • USB Interface runs industry standard Firmata
  • Processor card runs Arduino Leonardo compatible software
  • Arduino "Wire" Standard I2C bit driver
  • Community supported Python, C++, Ruby, LabView, VxWorks drivers

Drivers

Arduino

Host Software - Firmata

Firmata is a generic protocol for communicating with microcontrollers from software on a host computer. It is intended to work with any host computer software package. Right now there is a matching object in a number of languages. It is easy to add objects for other software to use this protocol. Basically, this firmware establishes a protocol for talking to the Arduino from the host software. The aim is to allow people to completely control the Arduino from software on the host computer.

Firmata has an attractive Test Program User Interface which could be easily extended

Firmata test screenshot.png

Raspberry Pi

lsmod dump with DIGIO-128 card attached
pi@raspi3 ~ $ lsmod | grep i2c_
i2c_dev                 5557  0
i2c_bcm2708             3997  0
pi@raspi3 ~ $ sudo i2cdetect -y 1
     0  1  2  3  4  5  6  7  8  9  a  b  c  d  e  f
00:          -- -- -- -- -- -- -- -- -- -- -- -- --
10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
20: 20 21 22 23 24 25 26 27 -- -- -- -- -- -- -- --
30: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
40: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
50: 50 -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
60: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
70: -- -- -- -- -- -- -- --
Raspberry Pi Performance with DIGIO-128 card attached
  • sudo python Adafruit_MCP230xx.py
  • Clock runs at 100 KHz

RPi-I2C-DIGIO-128-clk-data.png

  • Overall timing - 1 cycle

RPi-I2C-DIGIO-128-overall-read-1cycle.png

  • Overall timing - 2 cycle (Read-modify-write)

RPi-I2C-DIGIO-128-overall-rmw-2cycles.png

ESP32 MicroPython Drivers

PyBoard MicroPython Drivers

Raspberry Pi Pico

Personality EEPROM

  • Useful when there are a lot of I2C cards in a system
    • Useful in card test
    • Configure the card once, autodetect later
  • EEPROM I2C base address = 0x50
    • I2C address offset (0x50-0x57) set by jumpers for MCP23008/MCP23017 I2C port expanders
  • 24LC024 EEPROM
    • 256x8
    • 2.5-5.5 V
    • Maximum Clock Frequency: 400 kHz
    • Supply Current - Max: 3 mA
  • Based on Raspberry Pi Hat Spec
struct eep_vals
{
  char signature[4]; // 0-3 - "ODAS" in ASCII
  byte fmt_version;  // 4 - EEPROM data format version (0x00 reserved, 0x01 = first version)
  byte rsvd;         // 5 - set to 0
  short numatoms;    // 6-7 - set to 2
  long eeplen;       // 8-11 - set to 96 dec
  byte uuid[16];     // 12-27 - "0000000000000000" in ASCII
  short pid;         // 28-29 - See PID table
  byte vslen;        // 30 - set to 32 dec
  byte pslen;        // 31 - set to 32 dec
  byte vstr[32];     // 32-63 - Vendor Null terminated String
  byte pstr[32];     // 64-95 - Product Null terminated String
};
  • Addresses 96-255 are user programable
  • Addresses 0-95 can be changed by user (if desired)

Product ID Table

Signature=ODAS
Vendor=land.boards.com

ProductID (in dec)	Product (string)
1			DigIO16-I2C
2			DIGIO-128
3       		DIGIO-128/64
4			OptoIn8-I2C
5			OptoOut8-I2C
6			DIGIO32-I2C
7			PROTO16-I2C
8			ODAS-PSOC5
9			ODAS-RELAY16
127     		NEW CARD

Cards

  • Various cards
    • Processor cards
    • Digital I/O cards
    • Optoisolator cards
    • FPGA cards

ODAS Processor Cards

No Data Acquistion System is complete without a Processor Card.

  • BLUE-PILL-HUB - STM32 "Blue-Pill Board" based system processor
  • ODAS-PSOC5 - Cypress Semiconductor Programmable System on a Chip
  • NANO-BKOUT - Arduino NANO GVS Breakout card
  • GVSDuino - Arduino UNO compatible GVS Processor card
  • UNO-DB25 - Arduino Uno with a DB-25 connector
  • DAS-32U4 - Data Acquisition System Processor DAS-32U4

ODAS Digital I/O Cards

Card Function Interface type
CARRIER95TO49MM Adapt ODAS 49mm to 95mm cards N/A
DCE RS-232/TTL Converter TTL
DTE RS-232/TTL Converter TTL
DIGIO-128 128-bit Digital I/O Card I2C
DIGIO32-I2C 32-bit Digital I/O Card I2C
DigIO16-I2C 16-bit Digital I/O Card I2C
Front Panel For 8 Bit Computers Front Panel for 8-bit Microprocessors with I2C interfaces (SMT) I2C
Front Panel for 8 Bit Computers V2 Front Panel for 8-bit Microprocessors with I2C interfaces (Thru-hole) I2C
I2CIO16-DB25 16-bit I2C I/O based on the MCP23017 I2C
I2CIO-8X 8-bit I2C I/O based on the MCP23008 I2C
I2CIO-8 8-bit I2C I/O based on the MCP23008 I2C
I2C-TEMP I2C Temperature Sensor I2C
I2C-RPT 4-Channel I2C Multiplexer/Repeater I2C
I2C-RPT-08 8-channel I2C Multiplexer/Repeater I2C
ODAS-PSOC5 Programmable System On a Chip I2C, SPI, TTL
ODAS-RELAY-16 16 Channel Relay Card I2C
PROTO16-I2C 16-bit I/O with prototyping area I2C
PS2X49 PS/2 keyboard/mouse interface TTL
SWLEDX8 8 Switches and 8 LEDs I2C
SWLEDX8-I2C 16 bit I2C connection to SWLEDX8 card I2C
TinyPS2 PS/2 keyboard or mouse to TTL Level Serial converter TTL
VGAX49 VGA Digital Connection (2:2:2 or 5:6:5) TTL/Analog
SD_CARD_X49 SD Card Adapter TTL

ODAS FPGA Cards

ODAS Opto-Isolated Cards

OptoIn8-I2C-X3-CCA-5456-720px.jpg

Optically Isolated cards are necessary to connect together different electrical system without concerns for ground loops, voltage dropes or electrical noise. ODAS offers two optically isolated cards; one for input and one for output.

ODAS Card Test Station

  • ODAS Test Station
  • ODAS Tester - Test Software in GitHub repository
  • Arduino Nano
  • Cables or loopback connector
  • Auto-detect card if test has been run before
  • Presents card type list for un-programmed EEPROMs
Checking EEPROM for board type...Detected DIGIO-128 board
R=Read EEPROM, W=Write EEPROM, T=Test DIGIOs, L=Loop Test, B=Bounce LEDs
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