RADIO_2064_REG056
calnrst = (u8) read_radio_reg(pi, RADIO_2064_REG056) & 0xf8;
write_radio_reg(pi, RADIO_2064_REG056, calnrst);
write_radio_reg(pi, RADIO_2064_REG056, calnrst | 0x03);
write_radio_reg(pi, RADIO_2064_REG056, calnrst | 0x07);