#include "LibCEC.h"
#include "platform/serialport.h"
#include "util/StdString.h"
+#include "platform/timeutils.h"
using namespace std;
using namespace CEC;
CAdapterCommunication::CAdapterCommunication(CLibCEC *controller) :
- m_controller(controller),
- m_inbuf(NULL),
- m_iInbufSize(0),
- m_iInbufUsed(0),
- m_bStarted(false),
- m_bStop(false)
+ m_port(NULL),
+ m_controller(controller)
{
m_port = new CSerialPort;
}
CAdapterCommunication::~CAdapterCommunication(void)
{
- m_port->Close();
- m_port = NULL;
+ Close();
+
+ if (m_port)
+ {
+ delete m_port;
+ m_port = NULL;
+ }
}
-bool CAdapterCommunication::Open(const char *strPort, int iBaudRate /* = 38400 */, int iTimeoutMs /* = 10000 */)
+bool CAdapterCommunication::Open(const char *strPort, uint16_t iBaudRate /* = 38400 */, uint32_t iTimeoutMs /* = 10000 */)
{
CLockObject lock(&m_commMutex);
- if (m_bStarted)
+ if (!m_port)
+ {
+ m_controller->AddLog(CEC_LOG_ERROR, "port is NULL");
return false;
+ }
+
+ if (IsOpen())
+ {
+ m_controller->AddLog(CEC_LOG_ERROR, "port is already open");
+ }
if (!m_port->Open(strPort, iBaudRate))
{
//clear any input bytes
uint8_t buff[1024];
- m_port->Read(buff, sizeof(buff), 50);
-
- CCondition::Sleep(CEC_SETTLE_DOWN_TIME);
-
- m_bStop = false;
- m_bStarted = true;
+ m_port->Read(buff, sizeof(buff), 500);
if (CreateThread())
{
- m_controller->AddLog(CEC_LOG_DEBUG, "reader thread created");
+ m_controller->AddLog(CEC_LOG_DEBUG, "communication thread created");
return true;
}
else
{
- m_controller->AddLog(CEC_LOG_DEBUG, "could not create a reader thread");
+ m_controller->AddLog(CEC_LOG_DEBUG, "could not create a communication thread");
}
return false;
void CAdapterCommunication::Close(void)
{
+ CLockObject lock(&m_commMutex);
StopThread();
- m_port->Close();
+
+ m_rcvCondition.Broadcast();
}
void *CAdapterCommunication::Process(void)
{
- while (!m_bStop)
- {
- if (!ReadFromDevice(250))
- {
- m_bStarted = false;
- break;
- }
+ m_controller->AddLog(CEC_LOG_DEBUG, "communication thread started");
- CCondition::Sleep(50);
+ while (!IsStopped())
+ {
+ ReadFromDevice(100);
+ WriteNextCommand();
+ Sleep(5);
}
- m_controller->AddLog(CEC_LOG_DEBUG, "reader thread terminated");
-
- CLockObject lock(&m_commMutex);
- m_bStarted = false;
return NULL;
}
-bool CAdapterCommunication::ReadFromDevice(int iTimeout)
+bool CAdapterCommunication::ReadFromDevice(uint32_t iTimeout)
{
- uint8_t buff[1024];
CLockObject lock(&m_commMutex);
- int iBytesRead = m_port->Read(buff, sizeof(buff), iTimeout);
- lock.Leave();
- if (iBytesRead < 0)
+ int32_t iBytesRead;
+ uint8_t buff[1024];
+ if (!m_port)
+ return false;
+
+ iBytesRead = m_port->Read(buff, sizeof(buff), iTimeout);
+ if (iBytesRead < 0 || iBytesRead > 256)
{
CStdString strError;
strError.Format("error reading from serial port: %s", m_port->GetError().c_str());
return false;
}
else if (iBytesRead > 0)
- AddData(buff, iBytesRead);
+ AddData(buff, (uint8_t) iBytesRead);
- return true;
+ return iBytesRead > 0;
}
-void CAdapterCommunication::AddData(uint8_t *data, int iLen)
+void CAdapterCommunication::AddData(uint8_t *data, uint8_t iLen)
{
CLockObject lock(&m_bufferMutex);
- if (iLen + m_iInbufUsed > m_iInbufSize)
- {
- m_iInbufSize = iLen + m_iInbufUsed;
- m_inbuf = (uint8_t*)realloc(m_inbuf, m_iInbufSize);
- }
+ for (unsigned int iPtr = 0; iPtr < iLen; iPtr++)
+ m_inBuffer.Push(data[iPtr]);
- memcpy(m_inbuf + m_iInbufUsed, data, iLen);
- m_iInbufUsed += iLen;
- lock.Leave();
- m_condition.Signal();
+ m_rcvCondition.Signal();
}
-bool CAdapterCommunication::Write(const cec_frame &data)
+void CAdapterCommunication::WriteNextCommand(void)
{
CLockObject lock(&m_commMutex);
-
- if (m_port->Write(data) != data.size())
+ cec_adapter_message msg;
+ if (m_outBuffer.Pop(msg))
{
- CStdString strError;
- strError.Format("error writing to serial port: %s", m_port->GetError().c_str());
- m_controller->AddLog(CEC_LOG_ERROR, strError);
- return false;
+ if (m_port->Write(msg) != (int32_t) msg.size())
+ {
+ CStdString strError;
+ strError.Format("error writing to serial port: %s", m_port->GetError().c_str());
+ m_controller->AddLog(CEC_LOG_ERROR, strError);
+ }
+ else
+ {
+ m_controller->AddLog(CEC_LOG_DEBUG, "command sent");
+ CCondition::Sleep((uint32_t) msg.size() * (uint32_t)24 /*data*/ + (uint32_t)5 /*start bit (4.5 ms)*/);
+ }
}
+}
- m_controller->AddLog(CEC_LOG_DEBUG, "command sent");
-
- CCondition::Sleep((int) data.size() * 24 /*data*/ + 5 /*start bit (4.5 ms)*/ + 50 /* to be on the safe side */);
-
+bool CAdapterCommunication::Write(const cec_adapter_message &data)
+{
+ m_outBuffer.Push(data);
return true;
}
-bool CAdapterCommunication::Read(cec_frame &msg, int iTimeout)
+bool CAdapterCommunication::Read(cec_adapter_message &msg, uint32_t iTimeout)
{
CLockObject lock(&m_bufferMutex);
- if (m_iInbufUsed < 1)
- m_condition.Wait(&m_bufferMutex, iTimeout);
-
- if (m_iInbufUsed < 1)
- return false;
+ msg.clear();
+ uint64_t iNow = GetTimeMs();
+ uint64_t iTarget = iNow + iTimeout;
+ bool bGotFullMessage(false);
+ bool bNextIsEscaped(false);
+ bool bGotStart(false);
- //search for first start of message
- int startpos = -1;
- for (int i = 0; i < m_iInbufUsed; i++)
+ while(!bGotFullMessage && iNow < iTarget)
{
- if (m_inbuf[i] == MSGSTART)
+ uint8_t buf = 0;
+ if (!m_inBuffer.Pop(buf))
{
- startpos = i;
- break;
+ if (!m_rcvCondition.Wait(&m_bufferMutex, iTarget - iNow))
+ return false;
}
- }
-
- if (startpos == -1)
- return false;
-
- //move anything from the first start of message to the beginning of the buffer
- if (startpos > 0)
- {
- memmove(m_inbuf, m_inbuf + startpos, m_iInbufUsed - startpos);
- m_iInbufUsed -= startpos;
- }
- if (m_iInbufUsed < 2)
- return false;
-
- //look for end of message
- startpos = -1;
- int endpos = -1;
- for (int i = 1; i < m_iInbufUsed; i++)
- {
- if (m_inbuf[i] == MSGEND)
+ if (!bGotStart)
{
- endpos = i;
- break;
+ if (buf == MSGSTART)
+ bGotStart = true;
+ continue;
}
- else if (m_inbuf[i] == MSGSTART)
+ else if (buf == MSGSTART) //we found a msgstart before msgend, this is not right, remove
{
- startpos = i;
- break;
+ m_controller->AddLog(CEC_LOG_ERROR, "received MSGSTART before MSGEND");
+ msg.clear();
+ bGotStart = true;
}
- }
-
- if (startpos > 0) //we found a msgstart before msgend, this is not right, remove
- {
- m_controller->AddLog(CEC_LOG_ERROR, "received MSGSTART before MSGEND");
- memmove(m_inbuf, m_inbuf + startpos, m_iInbufUsed - startpos);
- m_iInbufUsed -= startpos;
- return false;
- }
- if (endpos > 0) //found a MSGEND
- {
- msg.clear();
- bool isesc = false;
- for (int i = 1; i < endpos; i++)
+ if (buf == MSGEND)
{
- if (isesc)
- {
- msg.push_back(m_inbuf[i] + (uint8_t)ESCOFFSET);
- isesc = false;
- }
- else if (m_inbuf[i] == MSGESC)
- {
- isesc = true;
- }
- else
- {
- msg.push_back(m_inbuf[i]);
- }
+ bGotFullMessage = true;
}
-
- if (endpos + 1 < m_iInbufUsed)
- memmove(m_inbuf, m_inbuf + endpos + 1, m_iInbufUsed - endpos - 1);
-
- m_iInbufUsed -= endpos + 1;
-
- return true;
+ else if (bNextIsEscaped)
+ {
+ msg.push_back(buf + (uint8_t)ESCOFFSET);
+ bNextIsEscaped = false;
+ }
+ else if (buf == MSGESC)
+ bNextIsEscaped = true;
+ else
+ msg.push_back(buf);
}
- return false;
+ return bGotFullMessage;
}
std::string CAdapterCommunication::GetError(void) const
return false;
m_controller->AddLog(CEC_LOG_DEBUG, "starting the bootloader");
- cec_frame output;
+ cec_adapter_message output;
+ output.clear();
+
output.push_back(MSGSTART);
PushEscaped(output, MSGCODE_START_BOOTLOADER);
output.push_back(MSGEND);
return true;
}
-void CAdapterCommunication::PushEscaped(cec_frame &vec, uint8_t byte)
+void CAdapterCommunication::PushEscaped(cec_adapter_message &vec, uint8_t byte)
{
if (byte >= MSGESC && byte != MSGSTART)
{
strLog.Format("setting ackmask to %2x", iMask);
m_controller->AddLog(CEC_LOG_DEBUG, strLog.c_str());
- cec_frame output;
+ cec_adapter_message output;
+ output.clear();
output.push_back(MSGSTART);
PushEscaped(output, MSGCODE_SET_ACK_MASK);
return false;
m_controller->AddLog(CEC_LOG_DEBUG, "sending ping");
- cec_frame output;
+ cec_adapter_message output;
+ output.clear();
+
output.push_back(MSGSTART);
PushEscaped(output, MSGCODE_PING);
output.push_back(MSGEND);
// TODO check for pong
return true;
}
+
+bool CAdapterCommunication::IsOpen(void) const
+{
+ return !IsStopped() && m_port->IsOpen();
+}
+
+void CAdapterCommunication::FormatAdapterMessage(const cec_command &command, cec_adapter_message &packet)
+{
+ packet.clear();
+
+ //set ack polarity to high when transmitting to the broadcast address
+ //set ack polarity low when transmitting to any other address
+ packet.push_back(MSGSTART);
+ PushEscaped(packet, MSGCODE_TRANSMIT_ACK_POLARITY);
+ if (command.destination == CECDEVICE_BROADCAST)
+ PushEscaped(packet, CEC_TRUE);
+ else
+ PushEscaped(packet, CEC_FALSE);
+ packet.push_back(MSGEND);
+
+ // add source and destination
+ packet.push_back(MSGSTART);
+ PushEscaped(packet, MSGCODE_TRANSMIT);
+ packet.push_back(((uint8_t)command.initiator << 4) + (uint8_t)command.destination);
+ packet.push_back(MSGEND);
+
+ // add opcode
+ packet.push_back(MSGSTART);
+ PushEscaped(packet, command.parameters.empty() ? (uint8_t)MSGCODE_TRANSMIT_EOM : (uint8_t)MSGCODE_TRANSMIT);
+ packet.push_back((uint8_t) command.opcode);
+ packet.push_back(MSGEND);
+
+ // add parameters
+ for (int8_t iPtr = 0; iPtr < command.parameters.size; iPtr++)
+ {
+ packet.push_back(MSGSTART);
+
+ if (iPtr == command.parameters.size - 1)
+ PushEscaped(packet, MSGCODE_TRANSMIT_EOM);
+ else
+ PushEscaped(packet, MSGCODE_TRANSMIT);
+
+ PushEscaped(packet, command.parameters[iPtr]);
+
+ packet.push_back(MSGEND);
+ }
+}
+
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