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//
// Copyright 2017 Ettus Research (National Instruments Corp.)
//
// SPDX-License-Identifier: GPL-3.0-or-later
//
#include "usrp1_impl.hpp"
#include <uhdlib/utils/eeprom_utils.hpp>
#include <uhd/usrp/mboard_eeprom.hpp>
#include <uhd/types/byte_vector.hpp>
namespace {
const uint8_t USRP1_EEPROM_ADDR = 0x50;
const size_t USRP1_SERIAL_LEN = 8;
//use char array so we dont need to attribute packed
struct usrp1_eeprom_map{
unsigned char _r[221];
unsigned char mcr[4];
unsigned char name[NAME_MAX_LEN];
unsigned char serial[USRP1_SERIAL_LEN];
};
}
using namespace uhd;
using uhd::usrp::mboard_eeprom_t;
mboard_eeprom_t usrp1_impl::get_mb_eeprom(uhd::i2c_iface::sptr iface)
{
mboard_eeprom_t mb_eeprom;
//extract the serial
mb_eeprom["serial"] = uhd::bytes_to_string(iface->read_eeprom(
USRP1_EEPROM_ADDR, offsetof(usrp1_eeprom_map, serial), USRP1_SERIAL_LEN
));
//extract the name
mb_eeprom["name"] = uhd::bytes_to_string(iface->read_eeprom(
USRP1_EEPROM_ADDR, offsetof(usrp1_eeprom_map, name), NAME_MAX_LEN
));
//extract master clock rate as a 32-bit uint in Hz
uint32_t master_clock_rate;
const byte_vector_t rate_bytes = iface->read_eeprom(
USRP1_EEPROM_ADDR, offsetof(usrp1_eeprom_map, mcr), sizeof(master_clock_rate)
);
std::copy(
rate_bytes.begin(), rate_bytes.end(), //input
reinterpret_cast<uint8_t *>(&master_clock_rate) //output
);
master_clock_rate = ntohl(master_clock_rate);
if (master_clock_rate > 1e6 and master_clock_rate < 1e9){
mb_eeprom["mcr"] = std::to_string(master_clock_rate);
}
else mb_eeprom["mcr"] = "";
return mb_eeprom;
}
void usrp1_impl::set_mb_eeprom(const mboard_eeprom_t &mb_eeprom)
{
auto &iface = _fx2_ctrl;
//store the serial
if (mb_eeprom.has_key("serial")) iface->write_eeprom(
USRP1_EEPROM_ADDR, offsetof(usrp1_eeprom_map, serial),
string_to_bytes(mb_eeprom["serial"], USRP1_SERIAL_LEN)
);
//store the name
if (mb_eeprom.has_key("name")) iface->write_eeprom(
USRP1_EEPROM_ADDR, offsetof(usrp1_eeprom_map, name),
string_to_bytes(mb_eeprom["name"], NAME_MAX_LEN)
);
//store the master clock rate as a 32-bit uint in Hz
if (mb_eeprom.has_key("mcr")){
uint32_t master_clock_rate = uint32_t(std::stod(mb_eeprom["mcr"]));
master_clock_rate = htonl(master_clock_rate);
const byte_vector_t rate_bytes(
reinterpret_cast<const uint8_t *>(&master_clock_rate),
reinterpret_cast<const uint8_t *>(&master_clock_rate)
+ sizeof(master_clock_rate)
);
iface->write_eeprom(
USRP1_EEPROM_ADDR, offsetof(usrp1_eeprom_map, mcr), rate_bytes
);
}
}
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