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a8f0bd18 LOK |
1 | /* |
2 | * This file is part of the libCEC(R) library. | |
3 | * | |
4 | * libCEC(R) is Copyright (C) 2011 Pulse-Eight Limited. All rights reserved. | |
5 | * libCEC(R) is an original work, containing original code. | |
6 | * | |
7 | * libCEC(R) is a trademark of Pulse-Eight Limited. | |
8 | * | |
9 | * This program is dual-licensed; you can redistribute it and/or modify | |
10 | * it under the terms of the GNU General Public License as published by | |
11 | * the Free Software Foundation; either version 2 of the License, or | |
12 | * (at your option) any later version. | |
13 | * | |
14 | * This program is distributed in the hope that it will be useful, | |
15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | * GNU General Public License for more details. | |
18 | * | |
19 | * You should have received a copy of the GNU General Public License | |
20 | * along with this program; if not, write to the Free Software | |
21 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. | |
22 | * | |
23 | * | |
24 | * Alternatively, you can license this library under a commercial license, | |
25 | * please contact Pulse-Eight Licensing for more information. | |
26 | * | |
27 | * For more information contact: | |
28 | * Pulse-Eight Licensing <license@pulse-eight.com> | |
29 | * http://www.pulse-eight.com/ | |
30 | * http://www.pulse-eight.net/ | |
31 | */ | |
32 | ||
828682d3 | 33 | #include "AdapterCommunication.h" |
2abe74eb LOK |
34 | |
35 | #include "LibCEC.h" | |
b9187cc6 | 36 | #include "platform/serialport.h" |
a8f0bd18 LOK |
37 | #include "util/StdString.h" |
38 | ||
39 | using namespace std; | |
40 | using namespace CEC; | |
41 | ||
2abe74eb | 42 | CAdapterCommunication::CAdapterCommunication(CLibCEC *controller) : |
12027dbe | 43 | m_port(NULL), |
2abe74eb | 44 | m_controller(controller), |
a8f0bd18 LOK |
45 | m_inbuf(NULL), |
46 | m_iInbufSize(0), | |
47 | m_iInbufUsed(0), | |
48 | m_bStarted(false), | |
49 | m_bStop(false) | |
50 | { | |
51 | m_port = new CSerialPort; | |
52 | } | |
53 | ||
828682d3 | 54 | CAdapterCommunication::~CAdapterCommunication(void) |
a8f0bd18 | 55 | { |
12027dbe LOK |
56 | Close(); |
57 | ||
58 | if (m_port) | |
59 | { | |
60 | delete m_port; | |
61 | m_port = NULL; | |
62 | } | |
25701fa6 LOK |
63 | |
64 | if (m_inbuf) | |
65 | free(m_inbuf); | |
a8f0bd18 LOK |
66 | } |
67 | ||
25701fa6 | 68 | bool CAdapterCommunication::Open(const char *strPort, uint16_t iBaudRate /* = 38400 */, uint32_t iTimeoutMs /* = 10000 */) |
a8f0bd18 | 69 | { |
12027dbe | 70 | if (m_bStarted || !m_port) |
a8f0bd18 LOK |
71 | return false; |
72 | ||
73 | if (!m_port->Open(strPort, iBaudRate)) | |
74 | { | |
75 | CStdString strError; | |
76 | strError.Format("error opening serial port '%s': %s", strPort, m_port->GetError().c_str()); | |
2abe74eb | 77 | m_controller->AddLog(CEC_LOG_ERROR, strError); |
a8f0bd18 LOK |
78 | return false; |
79 | } | |
80 | ||
2abe74eb | 81 | m_controller->AddLog(CEC_LOG_DEBUG, "connection opened"); |
a8f0bd18 LOK |
82 | |
83 | //clear any input bytes | |
84 | uint8_t buff[1024]; | |
85 | m_port->Read(buff, sizeof(buff), 50); | |
86 | ||
12027dbe | 87 | Sleep(CEC_SETTLE_DOWN_TIME); |
828682d3 LOK |
88 | |
89 | if (CreateThread()) | |
a8f0bd18 | 90 | { |
2abe74eb | 91 | m_controller->AddLog(CEC_LOG_DEBUG, "reader thread created"); |
12027dbe | 92 | m_bStarted = true; |
a8f0bd18 LOK |
93 | return true; |
94 | } | |
95 | else | |
96 | { | |
2abe74eb | 97 | m_controller->AddLog(CEC_LOG_DEBUG, "could not create a reader thread"); |
a8f0bd18 LOK |
98 | } |
99 | ||
100 | return false; | |
101 | } | |
102 | ||
828682d3 | 103 | void CAdapterCommunication::Close(void) |
a8f0bd18 | 104 | { |
25701fa6 LOK |
105 | m_bStop = true; |
106 | m_rcvCondition.Broadcast(); | |
12027dbe | 107 | |
828682d3 | 108 | StopThread(); |
25701fa6 LOK |
109 | |
110 | if (m_port) | |
111 | m_port->Close(); | |
a8f0bd18 LOK |
112 | } |
113 | ||
828682d3 | 114 | void *CAdapterCommunication::Process(void) |
a8f0bd18 | 115 | { |
12027dbe LOK |
116 | m_controller->AddLog(CEC_LOG_DEBUG, "communication thread started"); |
117 | ||
a8f0bd18 LOK |
118 | while (!m_bStop) |
119 | { | |
25701fa6 | 120 | if (!ReadFromDevice(1000)) |
a8f0bd18 LOK |
121 | { |
122 | m_bStarted = false; | |
123 | break; | |
124 | } | |
125 | ||
f7e6ba70 | 126 | if (!m_bStop) |
12027dbe | 127 | Sleep(50); |
a8f0bd18 LOK |
128 | } |
129 | ||
a8f0bd18 LOK |
130 | m_bStarted = false; |
131 | return NULL; | |
132 | } | |
133 | ||
25701fa6 | 134 | bool CAdapterCommunication::ReadFromDevice(uint32_t iTimeout) |
a8f0bd18 | 135 | { |
25701fa6 | 136 | int32_t iBytesRead; |
b6c82769 | 137 | |
a8f0bd18 | 138 | { |
25701fa6 LOK |
139 | CLockObject lock(&m_mutex); |
140 | ||
141 | uint8_t buff[1024]; | |
142 | if (!m_port) | |
143 | return false; | |
144 | ||
145 | iBytesRead = m_port->Read(buff, sizeof(buff), iTimeout); | |
146 | if (iBytesRead < 0 || iBytesRead > 256) | |
147 | { | |
148 | CStdString strError; | |
149 | strError.Format("error reading from serial port: %s", m_port->GetError().c_str()); | |
150 | m_controller->AddLog(CEC_LOG_ERROR, strError); | |
151 | return false; | |
152 | } | |
153 | else if (iBytesRead > 0) | |
154 | AddData(buff, (uint8_t) iBytesRead); | |
a8f0bd18 | 155 | } |
25701fa6 LOK |
156 | |
157 | if (iBytesRead > 0) | |
158 | m_rcvCondition.Signal(); | |
a8f0bd18 LOK |
159 | |
160 | return true; | |
161 | } | |
162 | ||
8bca69de | 163 | void CAdapterCommunication::AddData(uint8_t *data, uint8_t iLen) |
a8f0bd18 | 164 | { |
25701fa6 | 165 | if (m_iInbufUsed + iLen > m_iInbufSize) |
a8f0bd18 | 166 | { |
25701fa6 | 167 | m_iInbufSize = m_iInbufUsed + iLen; |
a8f0bd18 LOK |
168 | m_inbuf = (uint8_t*)realloc(m_inbuf, m_iInbufSize); |
169 | } | |
170 | ||
171 | memcpy(m_inbuf + m_iInbufUsed, data, iLen); | |
172 | m_iInbufUsed += iLen; | |
a8f0bd18 LOK |
173 | } |
174 | ||
828682d3 | 175 | bool CAdapterCommunication::Write(const cec_frame &data) |
a8f0bd18 | 176 | { |
a8f0bd18 | 177 | { |
25701fa6 LOK |
178 | CLockObject lock(&m_mutex); |
179 | if (m_port->Write(data) != (int32_t) data.size) | |
180 | { | |
181 | CStdString strError; | |
182 | strError.Format("error writing to serial port: %s", m_port->GetError().c_str()); | |
183 | m_controller->AddLog(CEC_LOG_ERROR, strError); | |
184 | return false; | |
185 | } | |
a8f0bd18 | 186 | |
25701fa6 | 187 | m_controller->AddLog(CEC_LOG_DEBUG, "command sent"); |
2abe74eb | 188 | |
25701fa6 LOK |
189 | CCondition::Sleep((uint32_t) data.size * (uint32_t)24 /*data*/ + (uint32_t)5 /*start bit (4.5 ms)*/ + (uint32_t)50 /* to be on the safe side */); |
190 | } | |
2abe74eb | 191 | |
a8f0bd18 LOK |
192 | return true; |
193 | } | |
194 | ||
25701fa6 | 195 | bool CAdapterCommunication::Read(cec_frame &msg, uint32_t iTimeout) |
a8f0bd18 | 196 | { |
25701fa6 | 197 | CLockObject lock(&m_mutex); |
a8f0bd18 | 198 | |
60fa4578 | 199 | if (m_iInbufUsed < 1) |
25701fa6 | 200 | m_rcvCondition.Wait(&m_mutex, iTimeout); |
a8f0bd18 | 201 | |
25701fa6 | 202 | if (m_iInbufUsed < 1 || m_bStop) |
a8f0bd18 LOK |
203 | return false; |
204 | ||
205 | //search for first start of message | |
25701fa6 LOK |
206 | int16_t startpos = -1; |
207 | for (int16_t iPtr = 0; iPtr < m_iInbufUsed; iPtr++) | |
a8f0bd18 | 208 | { |
25701fa6 | 209 | if (m_inbuf[iPtr] == MSGSTART) |
a8f0bd18 | 210 | { |
25701fa6 | 211 | startpos = iPtr; |
a8f0bd18 LOK |
212 | break; |
213 | } | |
214 | } | |
215 | ||
216 | if (startpos == -1) | |
217 | return false; | |
218 | ||
219 | //move anything from the first start of message to the beginning of the buffer | |
220 | if (startpos > 0) | |
221 | { | |
222 | memmove(m_inbuf, m_inbuf + startpos, m_iInbufUsed - startpos); | |
223 | m_iInbufUsed -= startpos; | |
224 | } | |
225 | ||
226 | if (m_iInbufUsed < 2) | |
227 | return false; | |
228 | ||
229 | //look for end of message | |
230 | startpos = -1; | |
25701fa6 LOK |
231 | int16_t endpos = -1; |
232 | for (int16_t iPtr = 1; iPtr < m_iInbufUsed; iPtr++) | |
a8f0bd18 | 233 | { |
25701fa6 | 234 | if (m_inbuf[iPtr] == MSGEND) |
a8f0bd18 | 235 | { |
25701fa6 | 236 | endpos = iPtr; |
a8f0bd18 LOK |
237 | break; |
238 | } | |
25701fa6 | 239 | else if (m_inbuf[iPtr] == MSGSTART) |
a8f0bd18 | 240 | { |
25701fa6 | 241 | startpos = iPtr; |
a8f0bd18 LOK |
242 | break; |
243 | } | |
244 | } | |
245 | ||
246 | if (startpos > 0) //we found a msgstart before msgend, this is not right, remove | |
247 | { | |
2abe74eb | 248 | m_controller->AddLog(CEC_LOG_ERROR, "received MSGSTART before MSGEND"); |
a8f0bd18 LOK |
249 | memmove(m_inbuf, m_inbuf + startpos, m_iInbufUsed - startpos); |
250 | m_iInbufUsed -= startpos; | |
251 | return false; | |
252 | } | |
253 | ||
254 | if (endpos > 0) //found a MSGEND | |
255 | { | |
256 | msg.clear(); | |
257 | bool isesc = false; | |
25701fa6 | 258 | for (int16_t iPtr = 1; iPtr < endpos; iPtr++) |
a8f0bd18 LOK |
259 | { |
260 | if (isesc) | |
261 | { | |
25701fa6 | 262 | msg.push_back(m_inbuf[iPtr] + (uint8_t)ESCOFFSET); |
a8f0bd18 LOK |
263 | isesc = false; |
264 | } | |
25701fa6 | 265 | else if (m_inbuf[iPtr] == MSGESC) |
a8f0bd18 LOK |
266 | { |
267 | isesc = true; | |
268 | } | |
269 | else | |
270 | { | |
25701fa6 | 271 | msg.push_back(m_inbuf[iPtr]); |
a8f0bd18 LOK |
272 | } |
273 | } | |
274 | ||
275 | if (endpos + 1 < m_iInbufUsed) | |
276 | memmove(m_inbuf, m_inbuf + endpos + 1, m_iInbufUsed - endpos - 1); | |
277 | ||
278 | m_iInbufUsed -= endpos + 1; | |
279 | ||
280 | return true; | |
281 | } | |
282 | ||
283 | return false; | |
284 | } | |
285 | ||
828682d3 | 286 | std::string CAdapterCommunication::GetError(void) const |
a8f0bd18 LOK |
287 | { |
288 | return m_port->GetError(); | |
289 | } | |
2abe74eb LOK |
290 | |
291 | bool CAdapterCommunication::StartBootloader(void) | |
292 | { | |
293 | if (!IsRunning()) | |
294 | return false; | |
295 | ||
296 | m_controller->AddLog(CEC_LOG_DEBUG, "starting the bootloader"); | |
297 | cec_frame output; | |
25701fa6 LOK |
298 | output.clear(); |
299 | ||
2abe74eb LOK |
300 | output.push_back(MSGSTART); |
301 | PushEscaped(output, MSGCODE_START_BOOTLOADER); | |
302 | output.push_back(MSGEND); | |
303 | ||
304 | if (!Write(output)) | |
305 | { | |
306 | m_controller->AddLog(CEC_LOG_ERROR, "could not start the bootloader"); | |
307 | return false; | |
308 | } | |
309 | m_controller->AddLog(CEC_LOG_DEBUG, "bootloader start command transmitted"); | |
310 | return true; | |
311 | } | |
312 | ||
313 | void CAdapterCommunication::PushEscaped(cec_frame &vec, uint8_t byte) | |
314 | { | |
315 | if (byte >= MSGESC && byte != MSGSTART) | |
316 | { | |
317 | vec.push_back(MSGESC); | |
318 | vec.push_back(byte - ESCOFFSET); | |
319 | } | |
320 | else | |
321 | { | |
322 | vec.push_back(byte); | |
323 | } | |
324 | } | |
325 | ||
326 | bool CAdapterCommunication::SetAckMask(uint16_t iMask) | |
327 | { | |
328 | if (!IsRunning()) | |
329 | return false; | |
330 | ||
331 | CStdString strLog; | |
332 | strLog.Format("setting ackmask to %2x", iMask); | |
333 | m_controller->AddLog(CEC_LOG_DEBUG, strLog.c_str()); | |
334 | ||
335 | cec_frame output; | |
25701fa6 | 336 | output.clear(); |
2abe74eb LOK |
337 | |
338 | output.push_back(MSGSTART); | |
339 | PushEscaped(output, MSGCODE_SET_ACK_MASK); | |
340 | PushEscaped(output, iMask >> 8); | |
341 | PushEscaped(output, (uint8_t)iMask); | |
342 | output.push_back(MSGEND); | |
343 | ||
344 | if (!Write(output)) | |
345 | { | |
346 | m_controller->AddLog(CEC_LOG_ERROR, "could not set the ackmask"); | |
347 | return false; | |
348 | } | |
349 | ||
350 | return true; | |
351 | } | |
352 | ||
353 | bool CAdapterCommunication::PingAdapter(void) | |
354 | { | |
355 | if (!IsRunning()) | |
356 | return false; | |
357 | ||
358 | m_controller->AddLog(CEC_LOG_DEBUG, "sending ping"); | |
359 | cec_frame output; | |
25701fa6 LOK |
360 | output.clear(); |
361 | ||
2abe74eb LOK |
362 | output.push_back(MSGSTART); |
363 | PushEscaped(output, MSGCODE_PING); | |
364 | output.push_back(MSGEND); | |
365 | ||
366 | if (!Write(output)) | |
367 | { | |
368 | m_controller->AddLog(CEC_LOG_ERROR, "could not send ping command"); | |
369 | return false; | |
370 | } | |
371 | ||
372 | m_controller->AddLog(CEC_LOG_DEBUG, "ping tranmitted"); | |
373 | ||
374 | // TODO check for pong | |
375 | return true; | |
376 | } |