Imports periph.io/x/periph/conn/spi periph.io/x/periph/devices/apa102 periph.io/x/periph/conn/physic periph.io/x/periph periph.io/x/periph/conn/display periph.io/x/periph/host periph.io/x/periph/conn/spi/spireg Standard library imports image/png image image/gif image/jpeg errors flag fmt io/ioutil log os path/filepath strconv strings time