1 | /*
|
---|
2 | Copyright (c) 2013 Arduino LLC. All right reserved.
|
---|
3 |
|
---|
4 | This library is free software; you can redistribute it and/or
|
---|
5 | modify it under the terms of the GNU Lesser General Public
|
---|
6 | License as published by the Free Software Foundation; either
|
---|
7 | version 2.1 of the License, or (at your option) any later version.
|
---|
8 |
|
---|
9 | This library is distributed in the hope that it will be useful,
|
---|
10 | but WITHOUT ANY WARRANTY; without even the implied warranty of
|
---|
11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
---|
12 | Lesser General Public License for more details.
|
---|
13 |
|
---|
14 | You should have received a copy of the GNU Lesser General Public
|
---|
15 | License along with this library; if not, write to the Free Software
|
---|
16 | Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
|
---|
17 | */
|
---|
18 |
|
---|
19 | #include <Console.h>
|
---|
20 |
|
---|
21 | // Default constructor uses global Bridge instance
|
---|
22 | ConsoleClass::ConsoleClass() :
|
---|
23 | bridge(Bridge), inBuffered(0), inReadPos(0), inBuffer(NULL),
|
---|
24 | autoFlush(true)
|
---|
25 | {
|
---|
26 | // Empty
|
---|
27 | }
|
---|
28 |
|
---|
29 | // Constructor with a user provided BridgeClass instance
|
---|
30 | ConsoleClass::ConsoleClass(BridgeClass &_b) :
|
---|
31 | bridge(_b), inBuffered(0), inReadPos(0), inBuffer(NULL),
|
---|
32 | autoFlush(true)
|
---|
33 | {
|
---|
34 | // Empty
|
---|
35 | }
|
---|
36 |
|
---|
37 | ConsoleClass::~ConsoleClass() {
|
---|
38 | end();
|
---|
39 | }
|
---|
40 |
|
---|
41 | size_t ConsoleClass::write(uint8_t c) {
|
---|
42 | if (autoFlush) {
|
---|
43 | uint8_t tmp[] = { 'P', c };
|
---|
44 | bridge.transfer(tmp, 2);
|
---|
45 | return 1;
|
---|
46 | } else {
|
---|
47 | outBuffer[outBuffered++] = c;
|
---|
48 | if (outBuffered == outBufferSize)
|
---|
49 | flush();
|
---|
50 | }
|
---|
51 | }
|
---|
52 |
|
---|
53 | size_t ConsoleClass::write(const uint8_t *buff, size_t size) {
|
---|
54 | if (autoFlush) {
|
---|
55 | // TODO: do it in a more efficient way
|
---|
56 | uint8_t *tmp = new uint8_t[size + 1];
|
---|
57 | tmp[0] = 'P';
|
---|
58 | memcpy(tmp + 1, buff, size);
|
---|
59 | bridge.transfer(tmp, size + 1);
|
---|
60 | delete[] tmp;
|
---|
61 | return size;
|
---|
62 | } else {
|
---|
63 | while (size > 0) {
|
---|
64 | outBuffer[outBuffered++] = *buff++;
|
---|
65 | size--;
|
---|
66 | if (outBuffered == outBufferSize)
|
---|
67 | flush();
|
---|
68 | }
|
---|
69 | }
|
---|
70 | }
|
---|
71 |
|
---|
72 | void ConsoleClass::flush() {
|
---|
73 | if (autoFlush)
|
---|
74 | return;
|
---|
75 |
|
---|
76 | bridge.transfer(outBuffer, outBuffered);
|
---|
77 | outBuffered = 1;
|
---|
78 | }
|
---|
79 |
|
---|
80 | void ConsoleClass::noBuffer() {
|
---|
81 | if (autoFlush)
|
---|
82 | return;
|
---|
83 | delete[] outBuffer;
|
---|
84 | autoFlush = true;
|
---|
85 | }
|
---|
86 |
|
---|
87 | void ConsoleClass::buffer(uint8_t size) {
|
---|
88 | noBuffer();
|
---|
89 | if (size == 0)
|
---|
90 | return;
|
---|
91 | outBuffer = new uint8_t[size + 1];
|
---|
92 | outBuffer[0] = 'P'; // WRITE tag
|
---|
93 | outBufferSize = size + 1;
|
---|
94 | outBuffered = 1;
|
---|
95 | autoFlush = false;
|
---|
96 | }
|
---|
97 |
|
---|
98 | bool ConsoleClass::connected() {
|
---|
99 | uint8_t tmp = 'a';
|
---|
100 | bridge.transfer(&tmp, 1, &tmp, 1);
|
---|
101 | return tmp == 1;
|
---|
102 | }
|
---|
103 |
|
---|
104 | int ConsoleClass::available() {
|
---|
105 | // Look if there is new data available
|
---|
106 | doBuffer();
|
---|
107 | return inBuffered;
|
---|
108 | }
|
---|
109 |
|
---|
110 | int ConsoleClass::read() {
|
---|
111 | doBuffer();
|
---|
112 | if (inBuffered == 0)
|
---|
113 | return -1; // no chars available
|
---|
114 | else {
|
---|
115 | inBuffered--;
|
---|
116 | return inBuffer[inReadPos++];
|
---|
117 | }
|
---|
118 | }
|
---|
119 |
|
---|
120 | int ConsoleClass::peek() {
|
---|
121 | doBuffer();
|
---|
122 | if (inBuffered == 0)
|
---|
123 | return -1; // no chars available
|
---|
124 | else
|
---|
125 | return inBuffer[inReadPos];
|
---|
126 | }
|
---|
127 |
|
---|
128 | void ConsoleClass::doBuffer() {
|
---|
129 | // If there are already char in buffer exit
|
---|
130 | if (inBuffered > 0)
|
---|
131 | return;
|
---|
132 |
|
---|
133 | // Try to buffer up to 32 characters
|
---|
134 | inReadPos = 0;
|
---|
135 | uint8_t tmp[] = { 'p', BUFFER_SIZE };
|
---|
136 | inBuffered = bridge.transfer(tmp, 2, inBuffer, BUFFER_SIZE);
|
---|
137 | }
|
---|
138 |
|
---|
139 | void ConsoleClass::begin() {
|
---|
140 | bridge.begin();
|
---|
141 | end();
|
---|
142 | inBuffer = new uint8_t[BUFFER_SIZE];
|
---|
143 | }
|
---|
144 |
|
---|
145 | void ConsoleClass::end() {
|
---|
146 | noBuffer();
|
---|
147 | if (inBuffer) {
|
---|
148 | delete[] inBuffer;
|
---|
149 | inBuffer = NULL;
|
---|
150 | }
|
---|
151 | }
|
---|
152 |
|
---|
153 | ConsoleClass Console;
|
---|