NPHY_BandControl_currentBand
currband = read_phy_reg(pi, 0x09) & NPHY_BandControl_currentBand;
read_phy_reg(pi, 0x09) & NPHY_BandControl_currentBand;
val = read_phy_reg(pi, 0x09) & NPHY_BandControl_currentBand;
or_phy_reg(pi, 0x09, NPHY_BandControl_currentBand);
and_phy_reg(pi, 0x09, ~NPHY_BandControl_currentBand);
if ((read_phy_reg(pi, 0x09) & NPHY_BandControl_currentBand) ==