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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 "usrp1_iface.hpp"
#include "usrp_commands.h"
#include <uhd/utils/assert.hpp>
#include <uhd/utils/byteswap.hpp>
#include <boost/format.hpp>
#include <stdexcept>
#include <iostream>
#include <iomanip>
using namespace uhd;
using namespace uhd::transport;
static const bool iface_debug = false;
class usrp1_iface_impl : public usrp1_iface{
public:
/*******************************************************************
* Structors
******************************************************************/
usrp1_iface_impl(usrp_ctrl::sptr ctrl_transport)
{
_ctrl_transport = ctrl_transport;
}
~usrp1_iface_impl(void)
{
/* NOP */
}
/*******************************************************************
* Peek and Poke
******************************************************************/
void poke32(boost::uint32_t addr, boost::uint32_t value)
{
boost::uint32_t swapped = byteswap(value);
if (iface_debug) {
std::cout.fill('0');
std::cout << "poke32(" << std::dec << addr << ", 0x";
std::cout << std::hex << std::setw(8) << value << ")" << std::endl;
}
boost::uint8_t w_index_h = SPI_ENABLE_FPGA & 0xff;
boost::uint8_t w_index_l = (SPI_FMT_MSB | SPI_FMT_HDR_1) & 0xff;
int ret =_ctrl_transport->usrp_control_write(
VRQ_SPI_WRITE,
addr & 0x7f,
(w_index_h << 8) | (w_index_l << 0),
(unsigned char*) &swapped,
sizeof(boost::uint32_t));
if (ret < 0)
std::cerr << "USRP: failed memory write: " << ret << std::endl;
}
void poke16(boost::uint32_t, boost::uint16_t)
{
//fpga only handles 32 bit writes
std::cerr << "USRP: unsupported operation: poke16()" << std::endl;
}
boost::uint32_t peek32(boost::uint32_t addr)
{
uint32_t value_out;
boost::uint8_t w_index_h = SPI_ENABLE_FPGA & 0xff;
boost::uint8_t w_index_l = (SPI_FMT_MSB | SPI_FMT_HDR_1) & 0xff;
int ret = _ctrl_transport->usrp_control_read(
VRQ_SPI_READ,
0x80 | (addr & 0x7f),
(w_index_h << 8) | (w_index_l << 0),
(unsigned char*) &value_out,
sizeof(boost::uint32_t));
if (ret < 0)
std::cerr << "USRP: failed memory read: " << ret << std::endl;
return byteswap(value_out);
}
boost::uint16_t peek16(boost::uint32_t addr)
{
uint32_t val = peek32(addr);
return boost::uint16_t(val & 0xff);
}
/*******************************************************************
* I2C
******************************************************************/
static const size_t max_i2c_data_bytes = 64;
void write_i2c(boost::uint8_t addr, const byte_vector_t &bytes)
{
UHD_ASSERT_THROW(bytes.size() < max_i2c_data_bytes);
unsigned char buff[max_i2c_data_bytes];
std::copy(bytes.begin(), bytes.end(), buff);
int ret = _ctrl_transport->usrp_control_write(VRQ_I2C_WRITE,
addr & 0xff,
0,
buff,
bytes.size());
if (ret < 0)
std::cerr << "USRP: failed i2c write: " << ret << std::endl;
}
byte_vector_t read_i2c(boost::uint8_t addr, size_t num_bytes)
{
UHD_ASSERT_THROW(num_bytes < max_i2c_data_bytes);
byte_vector_t out_bytes;
byte_vector_t::iterator it = out_bytes.begin();
unsigned char buff[max_i2c_data_bytes];
int ret = _ctrl_transport->usrp_control_read(VRQ_I2C_READ,
addr & 0xff,
0,
buff,
num_bytes);
if ((ret < 0) || (unsigned)ret < (num_bytes)) {
std::cerr << "USRP: failed i2c read: " << ret << std::endl;
return out_bytes;
}
for (size_t i = 0; i < num_bytes; i++)
out_bytes.push_back(buff[i]);
return out_bytes;
}
/*******************************************************************
* SPI
*
* For non-readback transactions use the SPI_WRITE command, which is
* simpler and uses the USB control buffer for OUT data. No data
* needs to be returned.
*
* For readback transactions use SPI_TRANSACT, which places up to
* 4 bytes of OUT data in the device request fields and uses the
* control buffer for IN data.
******************************************************************/
boost::uint32_t transact_spi(int which_slave,
const spi_config_t &,
boost::uint32_t bits,
size_t num_bits,
bool readback)
{
UHD_ASSERT_THROW((num_bits < 32) && !(num_bits % 8));
size_t num_bytes = num_bits / 8;
// Byteswap on num_bytes
unsigned char buff[4] = { 0 };
for (size_t i = 1; i <= num_bytes; i++)
buff[num_bytes - i] = (bits >> ((i - 1) * 8)) & 0xff;
if (readback) {
boost::uint8_t w_len_h = which_slave & 0xff;
boost::uint8_t w_len_l = num_bytes & 0xff;
int ret = _ctrl_transport->usrp_control_read(
VRQ_SPI_TRANSACT,
(buff[0] << 8) | (buff[1] << 0),
(buff[2] << 8) | (buff[3] << 0),
buff,
(w_len_h << 8) | (w_len_l << 0));
if (ret < 0) {
std::cout << "USRP: failed SPI readback transaction: "
<< std::dec << ret << std::endl;
}
boost::uint32_t val = (((boost::uint32_t)buff[0]) << 0) |
(((boost::uint32_t)buff[1]) << 8) |
(((boost::uint32_t)buff[2]) << 16) |
(((boost::uint32_t)buff[3]) << 24);
return val;
}
else {
boost::uint8_t w_index_h = which_slave & 0xff;
boost::uint8_t w_index_l = (SPI_FMT_MSB | SPI_FMT_HDR_0) & 0xff;
int ret =_ctrl_transport->usrp_control_write(
VRQ_SPI_WRITE,
0x00,
(w_index_h << 8) | (w_index_l << 0),
buff, num_bytes);
if (ret < 0) {
std::cout << "USRP: failed SPI transaction: "
<< std::dec << ret << std::endl;
}
return 0;
}
}
/*******************************************************************
* Firmware
*
* This call is deprecated.
******************************************************************/
void write_firmware_cmd(boost::uint8_t request,
boost::uint16_t value,
boost::uint16_t index,
unsigned char *buff,
boost::uint16_t length)
{
int ret;
if (request & 0x80) {
ret = _ctrl_transport->usrp_control_read(request,
value,
index,
buff,
length);
}
else {
ret = _ctrl_transport->usrp_control_write(request,
value,
index,
buff,
length);
}
if (ret < 0)
std::cerr << "USRP: failed firmware command: " << ret << std::endl;
}
private:
usrp_ctrl::sptr _ctrl_transport;
};
/***********************************************************************
* Public Make Function
**********************************************************************/
usrp1_iface::sptr usrp1_iface::make(usrp_ctrl::sptr ctrl_transport)
{
return sptr(new usrp1_iface_impl(ctrl_transport));
}
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