1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
|
//
// Copyright 2013 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 "n230_fw_ctrl_iface.hpp"
#include <uhd/utils/byteswap.hpp>
#include <uhd/utils/log.hpp>
#include <uhd/exception.hpp>
#include <boost/format.hpp>
#include <boost/asio.hpp> //used for htonl and ntohl
#include "n230_fw_comm_protocol.h"
namespace uhd { namespace usrp { namespace n230 {
//----------------------------------------------------------
// Factory method
//----------------------------------------------------------
uhd::wb_iface::sptr n230_fw_ctrl_iface::make(
uhd::transport::udp_simple::sptr udp_xport,
const uint16_t product_id,
const bool verbose)
{
return wb_iface::sptr(new n230_fw_ctrl_iface(udp_xport, product_id, verbose));
}
//----------------------------------------------------------
// udp_fw_ctrl_iface
//----------------------------------------------------------
n230_fw_ctrl_iface::n230_fw_ctrl_iface(
uhd::transport::udp_simple::sptr udp_xport,
const uint16_t product_id,
const bool verbose) :
_product_id(product_id), _verbose(verbose), _udp_xport(udp_xport),
_seq_num(0)
{
flush();
peek32(0);
}
n230_fw_ctrl_iface::~n230_fw_ctrl_iface()
{
flush();
}
void n230_fw_ctrl_iface::flush()
{
boost::mutex::scoped_lock lock(_mutex);
_flush();
}
void n230_fw_ctrl_iface::poke32(const wb_addr_type addr, const uint32_t data)
{
boost::mutex::scoped_lock lock(_mutex);
for (size_t i = 1; i <= NUM_RETRIES; i++) {
try {
_poke32(addr, data);
return;
} catch(const std::exception &ex) {
const std::string error_msg = str(boost::format(
"udp fw poke32 failure #%u\n%s") % i % ex.what());
if (_verbose) UHD_LOGGER_WARNING("N230") << error_msg ;
if (i == NUM_RETRIES) throw uhd::io_error(error_msg);
}
}
}
uint32_t n230_fw_ctrl_iface::peek32(const wb_addr_type addr)
{
boost::mutex::scoped_lock lock(_mutex);
for (size_t i = 1; i <= NUM_RETRIES; i++) {
try {
return _peek32(addr);
} catch(const std::exception &ex) {
const std::string error_msg = str(boost::format(
"udp fw peek32 failure #%u\n%s") % i % ex.what());
if (_verbose) UHD_LOGGER_WARNING("N230") << error_msg ;
if (i == NUM_RETRIES) throw uhd::io_error(error_msg);
}
}
return 0;
}
void n230_fw_ctrl_iface::_poke32(const wb_addr_type addr, const uint32_t data)
{
//Load request struct
fw_comm_pkt_t request;
request.id = uhd::htonx<uint32_t>(FW_COMM_GENERATE_ID(_product_id));
request.flags = uhd::htonx<uint32_t>(FW_COMM_FLAGS_ACK | FW_COMM_CMD_POKE32);
request.sequence = uhd::htonx<uint32_t>(_seq_num++);
request.addr = uhd::htonx(addr);
request.data_words = 1;
request.data[0] = uhd::htonx(data);
//Send request
_flush();
_udp_xport->send(boost::asio::buffer(&request, sizeof(request)));
//Recv reply
fw_comm_pkt_t reply;
const size_t nbytes = _udp_xport->recv(boost::asio::buffer(&reply, sizeof(reply)), 1.0);
if (nbytes == 0) throw uhd::io_error("udp fw poke32 - reply timed out");
//Sanity checks
const size_t flags = uhd::ntohx<uint32_t>(reply.flags);
UHD_ASSERT_THROW(nbytes == sizeof(reply));
UHD_ASSERT_THROW(not (flags & FW_COMM_FLAGS_ERROR_MASK));
UHD_ASSERT_THROW(flags & FW_COMM_CMD_POKE32);
UHD_ASSERT_THROW(flags & FW_COMM_FLAGS_ACK);
UHD_ASSERT_THROW(reply.sequence == request.sequence);
UHD_ASSERT_THROW(reply.addr == request.addr);
UHD_ASSERT_THROW(reply.data[0] == request.data[0]);
}
uint32_t n230_fw_ctrl_iface::_peek32(const wb_addr_type addr)
{
//Load request struct
fw_comm_pkt_t request;
request.id = uhd::htonx<uint32_t>(FW_COMM_GENERATE_ID(_product_id));
request.flags = uhd::htonx<uint32_t>(FW_COMM_FLAGS_ACK | FW_COMM_CMD_PEEK32);
request.sequence = uhd::htonx<uint32_t>(_seq_num++);
request.addr = uhd::htonx(addr);
request.data_words = 1;
request.data[0] = 0;
//Send request
_flush();
_udp_xport->send(boost::asio::buffer(&request, sizeof(request)));
//Recv reply
fw_comm_pkt_t reply;
const size_t nbytes = _udp_xport->recv(boost::asio::buffer(&reply, sizeof(reply)), 1.0);
if (nbytes == 0) throw uhd::io_error("udp fw peek32 - reply timed out");
//Sanity checks
const size_t flags = uhd::ntohx<uint32_t>(reply.flags);
UHD_ASSERT_THROW(nbytes == sizeof(reply));
UHD_ASSERT_THROW(not (flags & FW_COMM_FLAGS_ERROR_MASK));
UHD_ASSERT_THROW(flags & FW_COMM_CMD_PEEK32);
UHD_ASSERT_THROW(flags & FW_COMM_FLAGS_ACK);
UHD_ASSERT_THROW(reply.sequence == request.sequence);
UHD_ASSERT_THROW(reply.addr == request.addr);
//return result!
return uhd::ntohx<uint32_t>(reply.data[0]);
}
void n230_fw_ctrl_iface::_flush(void)
{
char buff[FW_COMM_PROTOCOL_MTU] = {};
while (_udp_xport->recv(boost::asio::buffer(buff), 0.0)) {
/*NOP*/
}
}
std::vector<std::string> n230_fw_ctrl_iface::discover_devices(
const std::string& addr_hint, const std::string& port,
uint16_t product_id)
{
std::vector<std::string> addrs;
//Create a UDP transport to communicate:
//Some devices will cause a throw when opened for a broadcast address.
//We print and recover so the caller can loop through all bcast addrs.
uhd::transport::udp_simple::sptr udp_bcast_xport;
try {
udp_bcast_xport = uhd::transport::udp_simple::make_broadcast(addr_hint, port);
} catch(const std::exception &e) {
UHD_LOGGER_ERROR("N230") << boost::format("Cannot open UDP transport on %s for discovery\n%s")
% addr_hint % e.what() ;
return addrs;
}
//Send dummy request
fw_comm_pkt_t request;
request.id = uhd::htonx<uint32_t>(FW_COMM_GENERATE_ID(product_id));
request.flags = uhd::htonx<uint32_t>(FW_COMM_FLAGS_ACK|FW_COMM_CMD_ECHO);
request.sequence = uhd::htonx<uint32_t>(std::rand());
udp_bcast_xport->send(boost::asio::buffer(&request, sizeof(request)));
//loop for replies until timeout
while (true) {
char buff[FW_COMM_PROTOCOL_MTU] = {};
const size_t nbytes = udp_bcast_xport->recv(boost::asio::buffer(buff), 0.050);
if (nbytes != sizeof(fw_comm_pkt_t)) break; //No more responses or responses are invalid
const fw_comm_pkt_t *reply = (const fw_comm_pkt_t *)buff;
if (request.id == reply->id &&
request.flags == reply->flags &&
request.sequence == reply->sequence)
{
addrs.push_back(udp_bcast_xport->get_recv_addr());
}
}
return addrs;
}
uint32_t n230_fw_ctrl_iface::get_iface_id(
const std::string& addr, const std::string& port,
uint16_t product_id)
{
uhd::transport::udp_simple::sptr udp_xport =
uhd::transport::udp_simple::make_connected(addr, port);
//Send dummy request
fw_comm_pkt_t request;
request.id = uhd::htonx<uint32_t>(FW_COMM_GENERATE_ID(product_id));
request.flags = uhd::htonx<uint32_t>(FW_COMM_FLAGS_ACK|FW_COMM_CMD_ECHO);
request.sequence = uhd::htonx<uint32_t>(std::rand());
udp_xport->send(boost::asio::buffer(&request, sizeof(request)));
//loop for replies until timeout
char buff[FW_COMM_PROTOCOL_MTU] = {};
const size_t nbytes = udp_xport->recv(boost::asio::buffer(buff), 1.0);
const fw_comm_pkt_t *reply = (const fw_comm_pkt_t *)buff;
if (nbytes > 0 &&
request.id == reply->id &&
request.flags == reply->flags &&
request.sequence == reply->sequence)
{
return uhd::ntohx<uint32_t>(reply->data[0]);
} else {
throw uhd::io_error("udp get_iface_id - bad response");
}
}
}}} //namespace
|
