README.md

Implementation of the Is31fl3731 matrix controller.
Uses a BMP280 and system time to alternately display the temperature and time.

The program has the tables to translate numbers to matrix commands, it does not translate alphabetic characters.

1. mvn clean package
2. cd target/distribution
3. Execute command to perform desired Matrix operation

sudo ./runIs31fl37Matrix.sh -b 0x01 -a 0x74 -bmpB 0x01 -bmpA 0x76 -g 24 -w 20 -i 128 -c 1 -l 1 -r 16 -z 12 -t info

sudo java --module-path . --module com.pi4j.devices.multi/com.pi4j.devices.is31fl37Matrix.Is31fl37_matrix_app -b 0x1 -a 0x74 " + " -bmpB 0x1 -bmpA 0x76 BMP280 address -g GPIO processing LED -w GPIO warning LED " + "-i intensity<128> -c <repeat_count,0 infinite> -l -s log -r resetGpio -z monitorGpio# " + "-t values : "trace", "debug", "info", "warn", "error" or "off" Default "info"

GPIO pin

x -g -----------> processing indicator LED

x -w ------------> warning indicator LED

x -r -------------------------------------------> Is31fl3731 SD --

x -z <------------------------------------------- Is31fl3731 INTB

x I2C -b bus -a address ----------------------- Is31fl3731

x I2C -bmpB bus -bmpA address ------------------ BMP280

Debug utilities

The following was used in debugging missed interrupts from the INTB line. Result was learning the V2 default debounce time is 10 ms, too great a value for this chips documented 7 ms interrupt duration.

Java Monitor input GPIO pin 18 configured as an active low interrupt.
com.pi4j.devices.multi/com.pi4j.devices.is31Fl37Matrix.MonitorInterrupt -p 18 -d DOWN sudo /usr/lib/jvm/java-1.11.0-openjdk-arm64/bin/java -javaagent:/home/pi/Tools/Intellij/idea-IC-222.4167.29/lib/idea_rt.jar=43151:/home/pi/Tools/Intellij/idea-IC-222.4167.29/bin -Dfile.encoding=UTF-8 -classpath /home/pi/.m2/repository/org/jetbrains/annotations/23.0.0/annotations-23.0.0.jar -p /home/pi/.m2/repository/org/slf4j/slf4j-simple/2.0.3/slf4j-simple-2.0.3.jar:/home/pi/.m2/repository/com/jcraft/jsch/0.1.55/jsch-0.1.55.jar:/home/pi/Pi4J_V2/Pi4J_V2_Devices/target/classes:/home/pi/.m2/repository/com/pi4j/pi4j-library-linuxfs/2.2.1-SNAPSHOT/pi4j-library-linuxfs-2.2.1-SNAPSHOT.jar:/home/pi/.m2/repository/com/pi4j/pi4j-library-pigpio/2.2.1-SNAPSHOT/pi4j-library-pigpio-2.2.1-SNAPSHOT.jar:/home/pi/.m2/repository/com/pi4j/pi4j-core/2.2.1-SNAPSHOT/pi4j-core-2.2.1-SNAPSHOT.jar:/home/pi/.m2/repository/org/slf4j/slf4j-api/2.0.3/slf4j-api-2.0.3.jar:/home/pi/.m2/repository/com/pi4j/pi4j-plugin-pigpio/2.2.1-SNAPSHOT/pi4j-plugin-pigpio-2.2.1-SNAPSHOT.jar:/home/pi/.m2/repository/com/pi4j/pi4j-plugin-linuxfs/2.2.1-SNAPSHOT/pi4j-plugin-linuxfs-2.2.1-SNAPSHOT.jar:/home/pi/.m2/repository/com/pi4j/pi4j-plugin-raspberrypi/2.2.1-SNAPSHOT/pi4j-plugin-raspberrypi-2.2.1-SNAPSHOT.jar -m com.pi4j.devices/com.pi4j.devices.is31Fl37Matrix.MonitorInterrupt -p 25 -d DOWN

sudo /usr/lib/jvm/java-1.11.0-openjdk-arm64/bin/java -cp .:/home/pi/Pi4J_V2/Pi4J_V2_Devices/target/distribution com.pi4j.devices.is31Fl37Matrix.MonitorInterrupt -p 25 -d DOWN

Java Create output GPIO pin 18. Create interrupt by driving line low for 15 millisecond duration com.pi4j.devices.multi/com.pi4j.devices.is31Fl37Matrix.CreateInterrupt -p 18 -d LOW -m 15

Python3 to create interrupt of specific interval python3 createInterrupt.py -p 18 -m 4 -d LOW

Python3 Program knows the expected is31Fl37Matrix interrupt flow, measure duration of successfully processed interrupts python3 ./monitorGpio.py -p 25

python3 monitorGpio2.py -p 25

The python3 program monitorGpio2.py uses the GPIO.add_event_detect function callback to more closely operate same as the java monitor program's event callback

Special regression test. Only displaus time. Bogus but valid address passed on for -bmpA

sudo ./runIs31fl37MatrixTest.sh -b 0x01 -a 0x74 -bmpB 0x01 -bmpA 0x74 -g 24 -w 20 -i 128 -c 1 -l 1 -r 18 -z 25 -t info