void LOW_devDS2406::readMemUniversal( const uint16_t inStartAddr, byteVec_t &outBytes,
const uint16_t inMaxLen, const owCommand_t inCommand) const
{
if ( inStartAddr >= inMaxLen )
throw devDS2406_error( "Illegal address to read", __FILE__, __LINE__);
if ( inStartAddr+outBytes.size() > inMaxLen )
throw devDS2406_error( "Too many bytes to read", __FILE__, __LINE__);
linkLock lock( *this);
byteVec_t sendBytes = byteVec_t( 3);
sendBytes[0] = inCommand;
sendBytes[1] = inStartAddr&0xff;
sendBytes[2] = inStartAddr>>8;
cmd_MatchROM();
getLink().writeData( sendBytes);
getLink().readData( outBytes);
if ( inStartAddr+outBytes.size() == inMaxLen ) { // read to end of mem => CRC16 checksumm is available
uint16_t expectedCrc16 = 0x0000;
expectedCrc16 |= (getLink().readDataByte() ^ 0xff); // NOTE: CRC bytzes are sent _inverted_!
expectedCrc16 |= (getLink().readDataByte() ^ 0xff) << 8; // NOTE: CRC bytzes are sent _inverted_!
if ( LOW_helper_CRC::calcCRC16( outBytes, LOW_helper_CRC::calcCRC16( sendBytes)) != expectedCrc16 )
throw LOW_helper_CRC::crc_error( "DS2406 - CRC error in read operation", __FILE__, __LINE__);
}
//getLink().resetBus();
}
LOW_devDS2406::channelInfo_t LOW_devDS2406::getChannel(const CRCtype_t inCRCtype, const chanSelect_t inChanSelect,
const interleaveMode_t inInterleaveMode, const toggleMode_t inToggleMode,
const initialMode_t inInitialMode, const activityLatchReset_t inALR)
{
// locking done by initializer
if ( inChanSelect == noneSelect )
throw devDS2406_error( "At least one channel must be selected", __FILE__, __LINE__);
if ( ! getHasPioB() && ( inChanSelect==chanBSelect || inChanSelect==chanBothSelect ) )
throw devDS2406_error( "Channel B selected, but device has only PIO A", __FILE__, __LINE__);
if ( inChanSelect!=chanBothSelect && inInterleaveMode )
throw devDS2406_error( "Interleave mode only available when selected both channels", __FILE__, __LINE__);
byteVec_t outBytes = byteVec_t( 3 );
outBytes[0] = ChannelAccess_COMMAND;
outBytes[1] = (inCRCtype & 0x03) |
((inChanSelect&0x3) <<2 ) |
((static_cast<uint8_t>(inInterleaveMode))<<4) |
((static_cast<uint8_t>(inToggleMode))<<5) |
((static_cast<uint8_t>(inInitialMode))<<6) |
((static_cast<int8_t>(inALR))<<7);
outBytes[2] = 0xff; // reserved, 0xff sent as specified
cmd_MatchROM();
getLink().writeData( outBytes );
uint8_t infoByte = getLink().readDataByte();
LOW_devDS2406::channelInfo_t channelInfo;
channelInfo.channelFFQ_pioA = (infoByte>>0)&0x01;
channelInfo.channelFFQ_pioB = (infoByte>>1)&0x01;
channelInfo.sensedLevel_pioA = (infoByte>>2)&0x01;
channelInfo.sensedLevel_pioB = (infoByte>>3)&0x01;
channelInfo.activityLatch_pioA = (infoByte>>4)&0x01;
channelInfo.activityLatch_pioB = (infoByte>>5)&0x01;
channelInfo.hasPioB = (infoByte>>6)&0x01;
channelInfo.isExternalPowered = (infoByte>>7)&0x01;
// if (inCRCtype==CRCtype_t::CRC_after1Byte )
// {
// vector<uint8_t> crc(2);
// getLink().readData(crc);
// uint16_t expectedCrc16 =0;
// expectedCrc16 |= (crc[0] ^ 0xff); // NOTE: CRC bytzes are sent _inverted_!
// expectedCrc16 |= (crc[1] ^ 0xff) << 8; // NOTE: CRC bytzes are sent _inverted_!
// if ( LOW_helper_CRC::calcCRC16( &infoByte,1 , expectedCrc16) != expectedCrc16 )
// throw LOW_helper_CRC::crc_error( "CRC error in read operation", __FILE__, __LINE__);
// }
return channelInfo;
}
bool LOW_devDS2408::ReadPIO(uint8_t & value)
{
linkLock lock( *this);
cmd_MatchROM();
getLink().writeData(static_cast<uint8_t>(W1_F29_FUNC_CHANN_ACCESS_READ));
value = getLink().readDataByte();
value =~value;
return true;
}
bool LOW_devDS2408::WriteControlStatus(uint8_t status)
{
linkLock lock( *this);
vector<uint8_t> writedata;
writedata.push_back(static_cast<uint8_t>(W1_F29_FUNC_WRITE_COND_SEARCH_REG));
writedata.push_back(static_cast<uint8_t>(W1_F29_REG_CONTROL_AND_STATUS));
writedata.push_back(static_cast<uint8_t>(0x00));
writedata.push_back(static_cast<uint8_t>(status));
cmd_MatchROM();
getLink().writeData(writedata);
return true;
}
bool LOW_devDS2408::WritePIO(uint8_t pin, bool value)
{
linkLock lock( *this);
cmd_MatchROM();
uint8_t oldvalue = 0x00;
if (!ReadPIO(oldvalue))
return false;
uint8_t newvalue = value ? oldvalue | (0x01 << pin) : oldvalue & ~(0x01 << pin);
if (!WritePIO(newvalue))
return false;
return true;
}
//=====================================================================================
//
// public methods
//
bool LOW_devDS2408::WritePIO(uint8_t piobyte)
{
linkLock lock( *this);
cmd_MatchROM();
vector<uint8_t> writedata;
writedata.push_back(static_cast<uint8_t>(W1_F29_FUNC_CHANN_ACCESS_WRITE));
uint8_t invertedpiobyte = ~piobyte;
writedata.push_back(invertedpiobyte);
writedata.push_back(piobyte);
getLink().writeData(writedata);
if (getLink().readDataByte() != 0xAA)
return false;
uint8_t newstate = getLink().readDataByte();
if (newstate!=invertedpiobyte)
return false;
return true;
}
void LOW_devDS2406::cmd_WriteStatus( const uint8_t inStartAddr, const byteVec_t &inWriteBytes) const
{
if ( inStartAddr+inWriteBytes.size() > 8 )
throw devDS2406_error( "Too many bytes to write", __FILE__, __LINE__);
if ( inStartAddr==0x05 || inStartAddr==0x06 )
throw devDS2406_error( "Address not writeable", __FILE__, __LINE__);
// not yet supported registers
if ( /*inStartAddr>=0x00 &&*/ inStartAddr<=0x04 )
throw devDS2406_error( "Access to address not supported in this version", __FILE__, __LINE__);
linkLock lock( *this);
// only address 7 remains, i.e. address must be 7 and length of inWriteBytes is 1
byteVec_t sendBytes = byteVec_t( 4);
sendBytes[0] = WriteStatus_COMMAND;
sendBytes[1] = inStartAddr&0xff;
sendBytes[2] = inStartAddr>>8;
sendBytes[3] = inWriteBytes[0];
cmd_MatchROM();
getLink().writeData( sendBytes);
uint16_t expectedCrc16 = 0x0000;
expectedCrc16 |= (getLink().readDataByte() ^ 0xff); // NOTE: CRC bytzes are sent _inverted_!
expectedCrc16 |= (getLink().readDataByte() ^ 0xff) << 8; // NOTE: CRC bytzes are sent _inverted_!
if ( LOW_helper_CRC::calcCRC16( sendBytes) != expectedCrc16 )
throw LOW_helper_CRC::crc_error( "CRC error in write operation", __FILE__, __LINE__);
//getLink().writeData( static_cast<uint8_t>(0xff));
// skip validation byte
//uint8_t validationByte = getLink().readDataByte();
//getLink().resetBus();
}