Imports periph.io/x/periph periph.io/x/periph/conn/gpio periph.io/x/periph/conn/gpio/gpioreg periph.io/x/periph/conn/pin periph.io/x/periph/conn/pin/pinreg periph.io/x/periph/host/sysfs periph.io/x/periph/host/distro Standard library imports errors strconv strings