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MCP3008 PinRasp Pi SignalTestBoard Pin (see Test+Board+BB Line) 
VDD+3.3V+3.3V Power Rail 
VREF+3.3V+3.3V Power Rail 
AGNDGNDGND Power Rail 
CLKSCLK47 
DOUTMISO49 
DINMOSI51 
CS /SHDNCE048 
DGNDGNDGND Power Rail 

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CH<number> pins get connected to the AnalogOUT of the analog circuits

Analog Circuits

Force-sensitive Resistor

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Photocell

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Potentiometer (Variable Resistor)

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Running SPI Sample

First build the dio-spi.jar file:

 

cd samples/spi
ant

 

Then copy ../../build/jar/dio-spi.jar to the board.

(On the Pi/iMX6)
For this example you should have SPIDevice entry in your dio.properties file like this example for the raspberry pi:

 

12 = deviceType: spibus.SPIDevice, name:SPI_Slave, deviceNumber:0, address:0, csActive:1, wordLength:8, clockFrequency:500000, clockMode:1, bitOrdering:1

 

Note that these are the current values in the repo which reflect a recent update. Older dio.peprties versions will not work.

 

sudo $JAVA_HOME/bin/java -Djava.library.path=. -Djava.security.policy=./java.policy -classpath .:./dio.jar:dio-samples.jar:dio-spi.jar -Djdk.dio.registry=./dio.properties -Ddeviceaccess.uart.prefix=/dev/ttyAMA dio.spi.MCP3008Sample 12 4

 

Note that "12" is the device manager ID number of the SPIDevice in the example property line shown above. "4" selects the channel on the MPC3008. You should use the channel number connected to the analog circuit you're trying to read.