func (mgr *Gpio) Set(states uint32, mask uint32) {
val := states & mask
if val != 0 {
C.range_set_u32(mgr.hdl, gpioOffSet, C.uint32_t(val))
}
val = ^states & mask
if val != 0 {
C.range_set_u32(mgr.hdl, gpioOffClear, C.uint32_t(val))
}
}
func (mgr *Gpio) setFunc(pin Pin, mode uint) {
off := gpioOffFunc + 4*(C.size_t(pin)/10)
shift := 3 * (pin % 10)
cur := uint(C.range_get_u32(mgr.hdl, off))
val := (cur &^ (0x7 << shift)) | (mode << shift)
C.range_set_u32(mgr.hdl, off, C.uint32_t(val))
}