RADIO_2064_REG05C
write_radio_reg(pi, RADIO_2064_REG05C, 0x2e);
RADIO_2064_REG05C,
rcal_value = (u8) read_radio_reg(pi, RADIO_2064_REG05C);
(0 != (read_radio_reg(pi, RADIO_2064_REG05C) & 0x20))