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
|
//
// Copyright 2013-2014 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/>.
//
#ifndef INCLUDED_ASYNC_SERIAL_HPP
#define INCLUDED_ASYNC_SERIAL_HPP
#include <boost/asio.hpp>
#include <boost/bind.hpp>
#include <boost/thread.hpp>
#include <boost/utility.hpp>
#include <boost/function.hpp>
#include <boost/shared_array.hpp>
namespace uhd { namespace usrp { namespace gps {
class async_serial : private boost::noncopyable
{
public:
async_serial();
~async_serial();
async_serial(const std::string &node, const size_t baud_rate,
boost::asio::serial_port_base::parity opt_parity=
boost::asio::serial_port_base::parity(
boost::asio::serial_port_base::parity::none),
boost::asio::serial_port_base::character_size opt_csize=
boost::asio::serial_port_base::character_size(8),
boost::asio::serial_port_base::flow_control opt_flow=
boost::asio::serial_port_base::flow_control(
boost::asio::serial_port_base::flow_control::none),
boost::asio::serial_port_base::stop_bits opt_stop=
boost::asio::serial_port_base::stop_bits(
boost::asio::serial_port_base::stop_bits::one));
void open(const std::string& node, const size_t baud_rate,
boost::asio::serial_port_base::parity opt_parity=
boost::asio::serial_port_base::parity(
boost::asio::serial_port_base::parity::none),
boost::asio::serial_port_base::character_size opt_csize=
boost::asio::serial_port_base::character_size(8),
boost::asio::serial_port_base::flow_control opt_flow=
boost::asio::serial_port_base::flow_control(
boost::asio::serial_port_base::flow_control::none),
boost::asio::serial_port_base::stop_bits opt_stop=
boost::asio::serial_port_base::stop_bits(
boost::asio::serial_port_base::stop_bits::one));
bool is_open(void) const;
bool error_status(void) const;
void close(void);
void write(const char *data, const size_t size);
void write(const std::vector<char> &data);
void write_string(const std::string &s);
static const size_t READ_BUFFER_SIZE=512;
void set_read_callback(
const boost::function<void (const char*, size_t)>& callback);
void clear_callback();
private: // methods
void _do_read();
void _read_end(
const boost::system::error_code &error,
size_t bytes_transferred);
void _do_write();
void _write_end(const boost::system::error_code &error);
void _do_close();
void _set_error_status(const bool e);
private: // members
boost::asio::io_service _io;
boost::asio::serial_port _port;
boost::thread _background_thread;
bool _open;
bool _error;
mutable boost::mutex _error_mutex;
std::vector<char> _write_queue;
boost::shared_array<char> _write_buffer;
size_t _write_buffer_size;
boost::mutex _write_queue_mutex;
char _read_buffer[READ_BUFFER_SIZE];
boost::function<void (const char*, size_t)> _callback;
};
}}} // namespace
#endif //INCLUDED_ASYNC_SERIAL_HPP
|
