func display_screen0() {
out, err := exec.Command("/root/bin/screen_1.sh").CombinedOutput()
if err != nil {
out = []byte(err.Error())
}
pcd8544.LCDclear()
pcd8544.LCDdrawstring(0, 0, string(out))
pcd8544.LCDdisplay()
}
func display_loading() {
pcd8544.LCDclear()
pcd8544.LCDdrawstring(0, 20, "Loading ...")
pcd8544.LCDdisplay()
}