Imports periph.io/x/periph periph.io/x/periph/conn/gpio periph.io/x/periph/conn/gpio/gpioreg periph.io/x/periph/conn/physic periph.io/x/periph/conn/pin periph.io/x/periph/host/cpu periph.io/x/periph/host/distro periph.io/x/periph/host/pmem periph.io/x/periph/host/sysfs Standard library imports errors fmt log os path strconv strings sync time