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//
// Copyright 2010 Ettus Research LLC
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
//
#include "codec_ctrl.hpp"
#include "ad9777_regs.hpp"
#include "usrp2_regs.hpp"
#include <boost/cstdint.hpp>
#include <boost/foreach.hpp>
#include <iostream>
static const bool codec_ctrl_debug = false;
using namespace uhd;
/*!
* A usrp2 codec control specific to the ad9777 ic.
*/
class codec_ctrl_impl : public codec_ctrl{
public:
codec_ctrl_impl(usrp2_iface::sptr iface){
_iface = iface;
//setup the ad9777 dac
_ad9777_regs.x_1r_2r_mode = ad9777_regs_t::X_1R_2R_MODE_1R;
_ad9777_regs.filter_interp_rate = ad9777_regs_t::FILTER_INTERP_RATE_4X;
_ad9777_regs.mix_mode = ad9777_regs_t::MIX_MODE_REAL;
_ad9777_regs.pll_divide_ratio = ad9777_regs_t::PLL_DIVIDE_RATIO_DIV1;
_ad9777_regs.pll_state = ad9777_regs_t::PLL_STATE_OFF;
_ad9777_regs.auto_cp_control = ad9777_regs_t::AUTO_CP_CONTROL_ENB;
//I dac values
_ad9777_regs.idac_fine_gain_adjust = 0;
_ad9777_regs.idac_coarse_gain_adjust = 0xf;
_ad9777_regs.idac_offset_adjust_lsb = 0;
_ad9777_regs.idac_offset_adjust_msb = 0;
//Q dac values
_ad9777_regs.qdac_fine_gain_adjust = 0;
_ad9777_regs.qdac_coarse_gain_adjust = 0xf;
_ad9777_regs.qdac_offset_adjust_lsb = 0;
_ad9777_regs.qdac_offset_adjust_msb = 0;
//write all regs
for(boost::uint8_t addr = 0; addr <= 0xC; addr++){
send_ad9777_reg(addr);
}
//power-up adc
_iface->poke32(FR_MISC_CTRL_ADC, FRF_MISC_CTRL_ADC_ON);
}
~codec_ctrl_impl(void){
//power-down dac
_ad9777_regs.power_down_mode = 1;
send_ad9777_reg(0);
//power-down adc
_iface->poke32(FR_MISC_CTRL_ADC, FRF_MISC_CTRL_ADC_OFF);
}
private:
ad9777_regs_t _ad9777_regs;
usrp2_iface::sptr _iface;
void send_ad9777_reg(boost::uint8_t addr){
boost::uint16_t reg = _ad9777_regs.get_write_reg(addr);
if (codec_ctrl_debug) std::cout << "send_ad9777_reg: " << std::hex << reg << std::endl;
_iface->transact_spi(
SPI_SS_AD9777, spi_config_t::EDGE_RISE,
reg, 6, false /*no rb*/
);
}
};
/***********************************************************************
* Public make function for the usrp2 codec control
**********************************************************************/
codec_ctrl::sptr codec_ctrl::make(usrp2_iface::sptr iface){
return sptr(new codec_ctrl_impl(iface));
}
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