## Quick Start

g++ is required to build the test cases.

Connect wPi pin 31 (BCM 1) and wPi pin 26 (BCM 12) to run ISR tests.
Also, wPi pin 28 (BCM 20) should be unconnected.

Run `make test` or do following to run the test:

```
make googletest-main
make -j 4
make test
```

To clean up the environment:

```
make clean
```

## Dependencies

Googletest is downloaded during
the build for the first time. The downloaded items are in directory `googletest-main`. `make clean` keeps this directory.  Run `make distclean`
to erase all built images including googletest.