Difference between pages "I2CIO-8" and "File:DIGIO-8 P1821 720PX.jpg"

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[[File:tindie-mediums.png|link=https://www.tindie.com/products/land_boards/i2c-demo-board-mcp23008-i2cio-8/?pt=ac_prod_search]]
 
  
[[File:I2CIO-8_X2-6000-720px.jpg]]
 
 
<video type="youtube">omUSJpGLv4A</video>
 
 
== Features ==
 
 
* 8 bits of Digital I/O
 
* I2C interface
 
* [https://ww1.microchip.com/downloads/en/DeviceDoc/21919e.pdf MCP23008] - 8-Bit I/O Expander with I2C Interface
 
* Base address = 0x20
 
* Address offset jumpers (0-7)
 
* Interrupt pin on I2C connectors
 
* Interrupt LED
 
* I2C Daisy-chain connectors
 
* 4 input (or output) jumpers
 
* 4 LEDs
 
* 2.7V to 5.5V
 
* 49x49mm form factor
 
* (4) #4-40 mounting holes
 
 
== Headers/Jumpers ==
 
 
=== J1, J2 - I2C Connectors ===
 
 
* Daisy-chain connectors
 
* Can ignore second connector
 
* Pinout
 
 
# GND
 
# Power (3.3V or 5V)
 
# SDA
 
# SCL
 
# Interrupt (Out)
 
 
=== H5-H8 - GVS connectors ===
 
 
* D4-D7
 
* Signal/Ground
 
 
=== H8, H9 - I2C Terminators ===
 
 
* Install to terminate with 2.2K terminator
 
 
=== A0-A3 - I2C Address Jumpers ===
 
 
* Install all 3 for address - 0x20
 
 
== Indicators ==
 
 
=== D0-D3 LEDS ===
 
 
* D0-D3 outputs
 
 
=== D9 - INT LED ===
 
 
* Interrupt - Goes off when interrupt is present
 
 
== Factory Acceptance Test ==
 
 
[[FILE:DIGIO-8_P1821_720PX.jpg]]
 
 
=== Test Station Theory of Operations ===
 
 
* Test Station controls the I2C interface on the UUT
 
* Three tests
 
** Internal Test
 
** External Loopback Test
 
** Bounce an LED Test
 
 
=== Test Station Set-up ===
 
 
* Uses [[Arduino_Based_Test_Station|ODAS Test Station V2]]
 
* Unit Under Test (UUT)
 
* Attach Host Computer USB to the Arduino NANO on the Test Station
 
* Run puTTY on the Host Computer
 
** 9600 baud
 
 
=== Card Selection ===
 
* puTTY will display the menu
 
<pre>
 
Checking if EEPROM is present on UUT...EEPROM is not present on UUT
 
Count of I2C devices in range 0x20-0x27 on UUT = 1
 
Detected MCP23008
 
Select the board type (Other)
 
1 - I2CIO8 board
 
2 - I2CIO8X board
 
Select board >
 
</pre>
 
 
* Select 1
 
 
<pre>
 
Init I2CIO-8 card
 
C=Card Tests, D=Direct, E=EEPROM, I=access Internal DIGIO32
 
</pre>
 
 
=== Running Card Test ===
 
 
* Select Card Tests = "C"
 
* Select Run Tests = "T"
 
* Move jumper across the 4 jumper pins H5-H8
 
* LEDs will correspond
 
* INT LED will blink on/off
 
* Observe test results
 
<pre>
 
C=Card Tests, D=Direct, E=EEPROM, I=access Internal DIGIO32
 
L=Loop/S=Single, T=Test, B=Bounce LEDs, I=UUT Int'l Tests, X=eXit sub-menu
 
Testing UUT = I2CIO-8
 
I2CIO8 card tests
 
Move jumper across H5-H8, observe LEDs D0-D3
 
Verify Int LED blinks
 
Hit a key to stop test
 
Test PASS = 1, FAIL = 0
 
</pre>
 
* Hit ENTER to display menu
 
<pre>
 
L=Loop/S=Single, T=Test, B=Bounce LEDs, I=UUT Int'l Test, X=eXit sub-menu
 
</pre>
 
 
=== Running Internal Tests ===
 
 
* Remove loopback cable
 
* Select Card Tests = "C"
 
* Select Run Tests = "I"
 
* Observe test results
 
<pre>
 
L=Loop/S=Single, T=Test, B=Bounce LEDs, I=UUT Int'l Tests, X=eXit sub-menu
 
UUT Internal card tests
 
Test PASS = 2, FAIL = 0
 
</pre>
 
* Hit ENTER to display menu
 
<pre>
 
L=Loop/S=Single, T=Test, B=Bounce LEDs, I=UUT Int'l Test, X=eXit sub-menu
 
</pre>
 
 
=== Running Blink LED Test ===
 
 
* Select Card Tests = "C"
 
* Select Run Tests = "B"
 
* Observe LEDs scanning on the 4 LEDs on the card
 
<pre>
 
L=Loop/S=Single, T=Test, B=Bounce LEDs, I=UUT Int'l Test, X=eXit sub-menu
 
Bounce a bit across outputs
 
Bouncing LEDs I2CIO8 - any key to stop
 
</pre>
 
* Hit ENTER to display the menu
 
<pre>
 
Finished bouncing LEDs
 
</pre>
 
 
=== Reference ===
 
 
* [[Arduino Based Test Station]]
 
* [https://github.com/land-boards/lb-Arduino-Code/tree/master/LBCards/ODAS/ODASTESTER ODAS Tester Github Repo]
 
 
== Drivers/Example Code ==
 
 
Extensive Driver Support for Arduino, Raspberry Pi, MicroPython, ESP-32, Blue Pill Board, Cypress PSoC
 
 
* [https://github.com/land-boards/lb-Arduino-Code/tree/master/libraries/LandBoards_I2CIO8 Github repo] - Arduino Driver code
 
* [https://github.com/land-boards/lb-Arduino-Code/tree/master/LBCards/I2CIO8 Github repo] - Arduino Example code
 
* [https://github.com/land-boards/lb-Python-Code/tree/master/MicroPython/ESP32/libraries/I2CIO8 Github repo] -  MicroPython Driver
 
== Assembly Sheet ==
 
 
* [[I2CIO8-X Assembly Sheet]]
 

Latest revision as of 00:21, 26 March 2022