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//
// Copyright 2010-2014 Ettus Research LLC
// Copyright 2018 Ettus Research, a National Instruments Company
//
// SPDX-License-Identifier: GPL-3.0-or-later
//
#include "x300_adc_ctrl.hpp"
#include "ads62p48_regs.hpp"
#include <uhd/exception.hpp>
#include <uhd/types/ranges.hpp>
#include <uhd/utils/log.hpp>
#include <uhd/utils/safe_call.hpp>
using namespace uhd;
x300_adc_ctrl::~x300_adc_ctrl(void)
{
/* NOP */
}
/*!
* A X300 codec control specific to the ads62p48 ic.
*/
class x300_adc_ctrl_impl : public x300_adc_ctrl
{
public:
x300_adc_ctrl_impl(uhd::spi_iface::sptr iface, const size_t slaveno)
: _iface(iface), _slaveno(slaveno)
{
init();
}
void init()
{
// power-up adc
_ads62p48_regs.reset = 1;
this->send_ads62p48_reg(0x00); // issue a reset to the ADC
_ads62p48_regs.reset = 0;
_ads62p48_regs.enable_low_speed_mode = 0;
_ads62p48_regs.ref = ads62p48_regs_t::REF_INTERNAL;
_ads62p48_regs.standby = ads62p48_regs_t::STANDBY_NORMAL;
_ads62p48_regs.power_down = ads62p48_regs_t::POWER_DOWN_NORMAL;
_ads62p48_regs.lvds_cmos = ads62p48_regs_t::LVDS_CMOS_DDR_LVDS;
_ads62p48_regs.channel_control = ads62p48_regs_t::CHANNEL_CONTROL_INDEPENDENT;
_ads62p48_regs.data_format = ads62p48_regs_t::DATA_FORMAT_2S_COMPLIMENT;
_ads62p48_regs.clk_out_pos_edge = ads62p48_regs_t::CLK_OUT_POS_EDGE_MINUS4_26;
_ads62p48_regs.clk_out_neg_edge = ads62p48_regs_t::CLK_OUT_NEG_EDGE_MINUS4_26;
this->send_ads62p48_reg(0);
this->send_ads62p48_reg(0x20);
this->send_ads62p48_reg(0x3f);
this->send_ads62p48_reg(0x40);
this->send_ads62p48_reg(0x41);
this->send_ads62p48_reg(0x44);
this->send_ads62p48_reg(0x50);
this->send_ads62p48_reg(0x51);
this->send_ads62p48_reg(0x52);
this->send_ads62p48_reg(0x53);
this->send_ads62p48_reg(0x55);
this->send_ads62p48_reg(0x57);
this->send_ads62p48_reg(0x62);
this->send_ads62p48_reg(0x63);
this->send_ads62p48_reg(0x66);
this->send_ads62p48_reg(0x68);
this->send_ads62p48_reg(0x6a);
this->send_ads62p48_reg(0x75);
this->send_ads62p48_reg(0x76);
}
void reset() override
{
init();
}
double set_gain(const double& gain) override
{
const meta_range_t gain_range = meta_range_t(0, 6.0, 0.5);
const int gain_bits = int((gain_range.clip(gain) * 2.0) + 0.5);
_ads62p48_regs.gain_chA = gain_bits;
_ads62p48_regs.gain_chB = gain_bits;
this->send_ads62p48_reg(0x55);
this->send_ads62p48_reg(0x68);
return gain_bits / 2;
}
void set_test_word(const std::string& patterna,
const std::string& patternb,
const uint32_t num) override
{
_ads62p48_regs.custom_pattern_low = num & 0xff;
_ads62p48_regs.custom_pattern_high = num >> 8;
if (patterna == "ones")
_ads62p48_regs.test_patterns_chA = ads62p48_regs_t::TEST_PATTERNS_CHA_ONES;
if (patterna == "zeros")
_ads62p48_regs.test_patterns_chA = ads62p48_regs_t::TEST_PATTERNS_CHA_ZEROS;
if (patterna == "custom")
_ads62p48_regs.test_patterns_chA = ads62p48_regs_t::TEST_PATTERNS_CHA_CUSTOM;
if (patterna == "ramp")
_ads62p48_regs.test_patterns_chA = ads62p48_regs_t::TEST_PATTERNS_CHA_RAMP;
if (patterna == "normal")
_ads62p48_regs.test_patterns_chA = ads62p48_regs_t::TEST_PATTERNS_CHA_NORMAL;
if (patternb == "ones")
_ads62p48_regs.test_patterns_chB = ads62p48_regs_t::TEST_PATTERNS_CHB_ONES;
if (patternb == "zeros")
_ads62p48_regs.test_patterns_chB = ads62p48_regs_t::TEST_PATTERNS_CHB_ZEROS;
if (patternb == "custom")
_ads62p48_regs.test_patterns_chB = ads62p48_regs_t::TEST_PATTERNS_CHB_CUSTOM;
if (patterna == "ramp")
_ads62p48_regs.test_patterns_chB = ads62p48_regs_t::TEST_PATTERNS_CHB_RAMP;
if (patterna == "normal")
_ads62p48_regs.test_patterns_chB = ads62p48_regs_t::TEST_PATTERNS_CHB_NORMAL;
this->send_ads62p48_reg(0x51);
this->send_ads62p48_reg(0x52);
this->send_ads62p48_reg(0x62);
this->send_ads62p48_reg(0x75);
}
~x300_adc_ctrl_impl(void) override
{
_ads62p48_regs.power_down = ads62p48_regs_t::POWER_DOWN_GLOBAL;
UHD_SAFE_CALL(this->send_ads62p48_reg(0x40);)
}
private:
ads62p48_regs_t _ads62p48_regs;
uhd::spi_iface::sptr _iface;
const size_t _slaveno;
void send_ads62p48_reg(uint8_t addr)
{
uint16_t reg = _ads62p48_regs.get_write_reg(addr);
_iface->write_spi(_slaveno, spi_config_t::EDGE_FALL, reg, 16);
}
};
/***********************************************************************
* Public make function for the ADC control
**********************************************************************/
x300_adc_ctrl::sptr x300_adc_ctrl::make(uhd::spi_iface::sptr iface, const size_t slaveno)
{
return sptr(new x300_adc_ctrl_impl(iface, slaveno));
}
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