chmod +x spidev_test
ls /dev/spidev*
Figure6-6ExampleOutput
spidev1.0
./spidev_test -H -O -D /dev/spidev1.0 -v -p \\x80\\x00
./spidev_test -H -O -D /dev/spidev1.0 -v -p \\xec\\x00\\x00\\x00\\x00\\x00\\x00
./spidev_test -H -O -D /dev/spidev1.0 -v -p \\x9e\\x00
./spidev_test -H -O -D /dev/spidev1.0 -v -p \\x1e\\xaa
./spidev_test -H -O -D /dev/spidev1.0 -v -p \\x9e\\x00