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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), | |
13fd6a66 | 47 | m_iInbufUsed(0) |
a8f0bd18 LOK |
48 | { |
49 | m_port = new CSerialPort; | |
50 | } | |
51 | ||
828682d3 | 52 | CAdapterCommunication::~CAdapterCommunication(void) |
a8f0bd18 | 53 | { |
12027dbe LOK |
54 | Close(); |
55 | ||
56 | if (m_port) | |
57 | { | |
58 | delete m_port; | |
59 | m_port = NULL; | |
60 | } | |
25701fa6 LOK |
61 | |
62 | if (m_inbuf) | |
63 | free(m_inbuf); | |
a8f0bd18 LOK |
64 | } |
65 | ||
25701fa6 | 66 | bool CAdapterCommunication::Open(const char *strPort, uint16_t iBaudRate /* = 38400 */, uint32_t iTimeoutMs /* = 10000 */) |
a8f0bd18 | 67 | { |
13fd6a66 LOK |
68 | CLockObject lock(&m_mutex); |
69 | if (!m_port) | |
70 | { | |
71 | m_controller->AddLog(CEC_LOG_ERROR, "port is NULL"); | |
a8f0bd18 | 72 | return false; |
13fd6a66 LOK |
73 | } |
74 | ||
75 | if (IsOpen()) | |
76 | { | |
77 | m_controller->AddLog(CEC_LOG_ERROR, "port is already open"); | |
78 | } | |
a8f0bd18 LOK |
79 | |
80 | if (!m_port->Open(strPort, iBaudRate)) | |
81 | { | |
82 | CStdString strError; | |
83 | strError.Format("error opening serial port '%s': %s", strPort, m_port->GetError().c_str()); | |
2abe74eb | 84 | m_controller->AddLog(CEC_LOG_ERROR, strError); |
a8f0bd18 LOK |
85 | return false; |
86 | } | |
87 | ||
2abe74eb | 88 | m_controller->AddLog(CEC_LOG_DEBUG, "connection opened"); |
a8f0bd18 LOK |
89 | |
90 | //clear any input bytes | |
91 | uint8_t buff[1024]; | |
92 | m_port->Read(buff, sizeof(buff), 50); | |
93 | ||
12027dbe | 94 | Sleep(CEC_SETTLE_DOWN_TIME); |
828682d3 LOK |
95 | |
96 | if (CreateThread()) | |
a8f0bd18 | 97 | { |
13fd6a66 | 98 | m_controller->AddLog(CEC_LOG_DEBUG, "communication thread created"); |
a8f0bd18 LOK |
99 | return true; |
100 | } | |
101 | else | |
102 | { | |
13fd6a66 | 103 | m_controller->AddLog(CEC_LOG_DEBUG, "could not create a communication thread"); |
a8f0bd18 LOK |
104 | } |
105 | ||
106 | return false; | |
107 | } | |
108 | ||
828682d3 | 109 | void CAdapterCommunication::Close(void) |
a8f0bd18 | 110 | { |
25701fa6 | 111 | m_rcvCondition.Broadcast(); |
12027dbe | 112 | |
13fd6a66 | 113 | CLockObject lock(&m_mutex); |
828682d3 | 114 | StopThread(); |
25701fa6 | 115 | |
13fd6a66 LOK |
116 | if (m_inbuf) |
117 | { | |
118 | free(m_inbuf); | |
119 | m_inbuf = NULL; | |
120 | m_iInbufSize = 0; | |
121 | m_iInbufUsed = 0; | |
122 | } | |
a8f0bd18 LOK |
123 | } |
124 | ||
828682d3 | 125 | void *CAdapterCommunication::Process(void) |
a8f0bd18 | 126 | { |
12027dbe LOK |
127 | m_controller->AddLog(CEC_LOG_DEBUG, "communication thread started"); |
128 | ||
13fd6a66 | 129 | while (!IsStopped()) |
a8f0bd18 | 130 | { |
a8f0bd18 | 131 | { |
5d38b0b6 LOK |
132 | CLockObject lock(&m_mutex); |
133 | if (ReadFromDevice(50)) | |
134 | m_rcvCondition.Signal(); | |
a8f0bd18 LOK |
135 | } |
136 | ||
13fd6a66 | 137 | if (!IsStopped()) |
12027dbe | 138 | Sleep(50); |
a8f0bd18 LOK |
139 | } |
140 | ||
a8f0bd18 LOK |
141 | return NULL; |
142 | } | |
143 | ||
25701fa6 | 144 | bool CAdapterCommunication::ReadFromDevice(uint32_t iTimeout) |
a8f0bd18 | 145 | { |
25701fa6 | 146 | int32_t iBytesRead; |
13fd6a66 LOK |
147 | uint8_t buff[1024]; |
148 | if (!m_port) | |
149 | return false; | |
b6c82769 | 150 | |
13fd6a66 LOK |
151 | iBytesRead = m_port->Read(buff, sizeof(buff), iTimeout); |
152 | if (iBytesRead < 0 || iBytesRead > 256) | |
a8f0bd18 | 153 | { |
13fd6a66 LOK |
154 | CStdString strError; |
155 | strError.Format("error reading from serial port: %s", m_port->GetError().c_str()); | |
156 | m_controller->AddLog(CEC_LOG_ERROR, strError); | |
157 | StopThread(false); | |
158 | return false; | |
a8f0bd18 | 159 | } |
13fd6a66 LOK |
160 | else if (iBytesRead > 0) |
161 | AddData(buff, (uint8_t) iBytesRead); | |
25701fa6 | 162 | |
13fd6a66 | 163 | return iBytesRead > 0; |
a8f0bd18 LOK |
164 | } |
165 | ||
8bca69de | 166 | void CAdapterCommunication::AddData(uint8_t *data, uint8_t iLen) |
a8f0bd18 | 167 | { |
25701fa6 | 168 | if (m_iInbufUsed + iLen > m_iInbufSize) |
a8f0bd18 | 169 | { |
25701fa6 | 170 | m_iInbufSize = m_iInbufUsed + iLen; |
a8f0bd18 LOK |
171 | m_inbuf = (uint8_t*)realloc(m_inbuf, m_iInbufSize); |
172 | } | |
173 | ||
174 | memcpy(m_inbuf + m_iInbufUsed, data, iLen); | |
175 | m_iInbufUsed += iLen; | |
a8f0bd18 LOK |
176 | } |
177 | ||
828682d3 | 178 | bool CAdapterCommunication::Write(const cec_frame &data) |
a8f0bd18 | 179 | { |
a8f0bd18 | 180 | { |
25701fa6 LOK |
181 | CLockObject lock(&m_mutex); |
182 | if (m_port->Write(data) != (int32_t) data.size) | |
183 | { | |
184 | CStdString strError; | |
185 | strError.Format("error writing to serial port: %s", m_port->GetError().c_str()); | |
186 | m_controller->AddLog(CEC_LOG_ERROR, strError); | |
187 | return false; | |
188 | } | |
a8f0bd18 | 189 | |
25701fa6 | 190 | m_controller->AddLog(CEC_LOG_DEBUG, "command sent"); |
2abe74eb | 191 | |
40339852 | 192 | CCondition::Sleep((uint32_t) data.size * (uint32_t)24 /*data*/ + (uint32_t)5 /*start bit (4.5 ms)*/); |
25701fa6 | 193 | } |
2abe74eb | 194 | |
a8f0bd18 LOK |
195 | return true; |
196 | } | |
197 | ||
25701fa6 | 198 | bool CAdapterCommunication::Read(cec_frame &msg, uint32_t iTimeout) |
a8f0bd18 | 199 | { |
25701fa6 | 200 | CLockObject lock(&m_mutex); |
a8f0bd18 | 201 | |
60fa4578 | 202 | if (m_iInbufUsed < 1) |
13fd6a66 LOK |
203 | { |
204 | if (!m_rcvCondition.Wait(&m_mutex, iTimeout)) | |
205 | return false; | |
206 | } | |
a8f0bd18 | 207 | |
13fd6a66 | 208 | if (m_iInbufUsed < 1 || IsStopped()) |
a8f0bd18 LOK |
209 | return false; |
210 | ||
211 | //search for first start of message | |
25701fa6 LOK |
212 | int16_t startpos = -1; |
213 | for (int16_t iPtr = 0; iPtr < m_iInbufUsed; iPtr++) | |
a8f0bd18 | 214 | { |
25701fa6 | 215 | if (m_inbuf[iPtr] == MSGSTART) |
a8f0bd18 | 216 | { |
25701fa6 | 217 | startpos = iPtr; |
a8f0bd18 LOK |
218 | break; |
219 | } | |
220 | } | |
221 | ||
222 | if (startpos == -1) | |
223 | return false; | |
224 | ||
225 | //move anything from the first start of message to the beginning of the buffer | |
226 | if (startpos > 0) | |
227 | { | |
228 | memmove(m_inbuf, m_inbuf + startpos, m_iInbufUsed - startpos); | |
229 | m_iInbufUsed -= startpos; | |
230 | } | |
231 | ||
232 | if (m_iInbufUsed < 2) | |
233 | return false; | |
234 | ||
235 | //look for end of message | |
236 | startpos = -1; | |
25701fa6 LOK |
237 | int16_t endpos = -1; |
238 | for (int16_t iPtr = 1; iPtr < m_iInbufUsed; iPtr++) | |
a8f0bd18 | 239 | { |
25701fa6 | 240 | if (m_inbuf[iPtr] == MSGEND) |
a8f0bd18 | 241 | { |
25701fa6 | 242 | endpos = iPtr; |
a8f0bd18 LOK |
243 | break; |
244 | } | |
25701fa6 | 245 | else if (m_inbuf[iPtr] == MSGSTART) |
a8f0bd18 | 246 | { |
25701fa6 | 247 | startpos = iPtr; |
a8f0bd18 LOK |
248 | break; |
249 | } | |
250 | } | |
251 | ||
252 | if (startpos > 0) //we found a msgstart before msgend, this is not right, remove | |
253 | { | |
2abe74eb | 254 | m_controller->AddLog(CEC_LOG_ERROR, "received MSGSTART before MSGEND"); |
a8f0bd18 LOK |
255 | memmove(m_inbuf, m_inbuf + startpos, m_iInbufUsed - startpos); |
256 | m_iInbufUsed -= startpos; | |
257 | return false; | |
258 | } | |
259 | ||
260 | if (endpos > 0) //found a MSGEND | |
261 | { | |
262 | msg.clear(); | |
263 | bool isesc = false; | |
25701fa6 | 264 | for (int16_t iPtr = 1; iPtr < endpos; iPtr++) |
a8f0bd18 LOK |
265 | { |
266 | if (isesc) | |
267 | { | |
25701fa6 | 268 | msg.push_back(m_inbuf[iPtr] + (uint8_t)ESCOFFSET); |
a8f0bd18 LOK |
269 | isesc = false; |
270 | } | |
25701fa6 | 271 | else if (m_inbuf[iPtr] == MSGESC) |
a8f0bd18 LOK |
272 | { |
273 | isesc = true; | |
274 | } | |
275 | else | |
276 | { | |
25701fa6 | 277 | msg.push_back(m_inbuf[iPtr]); |
a8f0bd18 LOK |
278 | } |
279 | } | |
280 | ||
281 | if (endpos + 1 < m_iInbufUsed) | |
282 | memmove(m_inbuf, m_inbuf + endpos + 1, m_iInbufUsed - endpos - 1); | |
283 | ||
284 | m_iInbufUsed -= endpos + 1; | |
285 | ||
286 | return true; | |
287 | } | |
288 | ||
289 | return false; | |
290 | } | |
291 | ||
828682d3 | 292 | std::string CAdapterCommunication::GetError(void) const |
a8f0bd18 LOK |
293 | { |
294 | return m_port->GetError(); | |
295 | } | |
2abe74eb LOK |
296 | |
297 | bool CAdapterCommunication::StartBootloader(void) | |
298 | { | |
299 | if (!IsRunning()) | |
300 | return false; | |
301 | ||
302 | m_controller->AddLog(CEC_LOG_DEBUG, "starting the bootloader"); | |
303 | cec_frame output; | |
25701fa6 LOK |
304 | output.clear(); |
305 | ||
2abe74eb LOK |
306 | output.push_back(MSGSTART); |
307 | PushEscaped(output, MSGCODE_START_BOOTLOADER); | |
308 | output.push_back(MSGEND); | |
309 | ||
310 | if (!Write(output)) | |
311 | { | |
312 | m_controller->AddLog(CEC_LOG_ERROR, "could not start the bootloader"); | |
313 | return false; | |
314 | } | |
315 | m_controller->AddLog(CEC_LOG_DEBUG, "bootloader start command transmitted"); | |
316 | return true; | |
317 | } | |
318 | ||
319 | void CAdapterCommunication::PushEscaped(cec_frame &vec, uint8_t byte) | |
320 | { | |
321 | if (byte >= MSGESC && byte != MSGSTART) | |
322 | { | |
323 | vec.push_back(MSGESC); | |
324 | vec.push_back(byte - ESCOFFSET); | |
325 | } | |
326 | else | |
327 | { | |
328 | vec.push_back(byte); | |
329 | } | |
330 | } | |
331 | ||
332 | bool CAdapterCommunication::SetAckMask(uint16_t iMask) | |
333 | { | |
334 | if (!IsRunning()) | |
335 | return false; | |
336 | ||
337 | CStdString strLog; | |
338 | strLog.Format("setting ackmask to %2x", iMask); | |
339 | m_controller->AddLog(CEC_LOG_DEBUG, strLog.c_str()); | |
340 | ||
341 | cec_frame output; | |
25701fa6 | 342 | output.clear(); |
2abe74eb LOK |
343 | |
344 | output.push_back(MSGSTART); | |
345 | PushEscaped(output, MSGCODE_SET_ACK_MASK); | |
346 | PushEscaped(output, iMask >> 8); | |
347 | PushEscaped(output, (uint8_t)iMask); | |
348 | output.push_back(MSGEND); | |
349 | ||
350 | if (!Write(output)) | |
351 | { | |
352 | m_controller->AddLog(CEC_LOG_ERROR, "could not set the ackmask"); | |
353 | return false; | |
354 | } | |
355 | ||
356 | return true; | |
357 | } | |
358 | ||
359 | bool CAdapterCommunication::PingAdapter(void) | |
360 | { | |
361 | if (!IsRunning()) | |
362 | return false; | |
363 | ||
364 | m_controller->AddLog(CEC_LOG_DEBUG, "sending ping"); | |
365 | cec_frame output; | |
25701fa6 LOK |
366 | output.clear(); |
367 | ||
2abe74eb LOK |
368 | output.push_back(MSGSTART); |
369 | PushEscaped(output, MSGCODE_PING); | |
370 | output.push_back(MSGEND); | |
371 | ||
372 | if (!Write(output)) | |
373 | { | |
374 | m_controller->AddLog(CEC_LOG_ERROR, "could not send ping command"); | |
375 | return false; | |
376 | } | |
377 | ||
378 | m_controller->AddLog(CEC_LOG_DEBUG, "ping tranmitted"); | |
379 | ||
380 | // TODO check for pong | |
381 | return true; | |
382 | } | |
13fd6a66 LOK |
383 | |
384 | bool CAdapterCommunication::IsOpen(void) const | |
385 | { | |
386 | return !IsStopped() && m_port->IsOpen(); | |
387 | } |