easylinux/NmraDcc
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Fixed some bugs around DCC Accessory Output Mode Addressing and handling of edge cases

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Add function to set Accessory Decoder Address from next received Accessory Decoder command and new notify call-backs when a new address is set
Added new notifyDccSigOutputState() with no OutputIndex parameter
Bumped version but have NOT tagged the library as it needs more testing and checking for breakage
This commit is contained in:
Alex Shepherd
2017-04-27 01:26:25 +12:00
parent f8f106962f
commit 07933e42a8
3 changed files with 98 additions and 32 deletions
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103
NmraDcc.cpp
View File

@@ -249,6 +249,8 @@ typedef struct
DCC_MSG LastMsg ;
uint8_t ExtIntNum;
uint8_t ExtIntPinNum;
int16_t myDccAddress; // Cached value of DCC Address from CVs
uint8_t inAccDecDCCAddrNextReceivedMode;
#ifdef DCC_DEBUG
uint8_t IntCount;
uint8_t TickCount;
@@ -536,6 +538,15 @@ uint8_t readCV( unsigned int CV )
uint8_t writeCV( unsigned int CV, uint8_t Value)
{
switch( CV )
{
case CV_ACCESSORY_DECODER_ADDRESS_LSB: // Also same CV for CV_MULTIFUNCTION_PRIMARY_ADDRESS
case CV_ACCESSORY_DECODER_ADDRESS_MSB:
case CV_MULTIFUNCTION_EXTENDED_ADDRESS_MSB:
case CV_MULTIFUNCTION_EXTENDED_ADDRESS_LSB:
DccProcState.myDccAddress = -1; // Assume any CV Write Operation might change the Address
}
if( notifyCVWrite )
return notifyCVWrite( CV, Value ) ;
@@ -551,24 +562,30 @@ uint8_t writeCV( unsigned int CV, uint8_t Value)
uint16_t getMyAddr(void)
{
uint16_t Addr ;
uint8_t CV29Value ;
if( DccProcState.myDccAddress != -1 ) // See if we can return the cached value
return( DccProcState.myDccAddress );
CV29Value = readCV( CV_29_CONFIG ) ;
if( CV29Value & CV29_ACCESSORY_DECODER ) // Accessory Decoder?
Addr = ( readCV( CV_ACCESSORY_DECODER_ADDRESS_MSB ) << 6 ) | readCV( CV_ACCESSORY_DECODER_ADDRESS_LSB ) ;
if( CV29Value & CV29_ACCESSORY_DECODER ) // Accessory Decoder?
{
if( CV29Value & CV29_OUTPUT_ADDRESS_MODE )
DccProcState.myDccAddress = ( readCV( CV_ACCESSORY_DECODER_ADDRESS_MSB ) << 8 ) | readCV( CV_ACCESSORY_DECODER_ADDRESS_LSB ) ;
else
DccProcState.myDccAddress = ( ( readCV( CV_ACCESSORY_DECODER_ADDRESS_MSB ) & 0b00000111) << 6 ) | ( readCV( CV_ACCESSORY_DECODER_ADDRESS_LSB ) & 0b00111111) ;
}
else // Multi-Function Decoder?
{
if( CV29Value & CV29_EXT_ADDRESSING ) // Two Byte Address?
Addr = ( ( readCV( CV_MULTIFUNCTION_EXTENDED_ADDRESS_MSB ) - 192 ) << 8 ) | readCV( CV_MULTIFUNCTION_EXTENDED_ADDRESS_LSB ) ;
DccProcState.myDccAddress = ( ( readCV( CV_MULTIFUNCTION_EXTENDED_ADDRESS_MSB ) - 192 ) << 8 ) | readCV( CV_MULTIFUNCTION_EXTENDED_ADDRESS_LSB ) ;
else
Addr = readCV( 1 ) ;
DccProcState.myDccAddress = readCV( 1 ) ;
}
return Addr ;
return DccProcState.myDccAddress ;
}
void processDirectOpsOperation( uint8_t Cmd, uint16_t CVAddr, uint8_t Value )
@@ -964,16 +981,44 @@ void execDccProcessor( DCC_MSG * pDccMsg )
BoardAddress = ( ( (~pDccMsg->Data[1]) & 0b01110000 ) << 2 ) | ( pDccMsg->Data[0] & 0b00111111 ) ;
// If we're filtering was it my board address Our or a broadcast address
if( ( DccProcState.Flags & FLAGS_MY_ADDRESS_ONLY ) && ( BoardAddress != getMyAddr() ) && ( BoardAddress != 511 ) )
return;
OutputAddress = pDccMsg->Data[1] & 0b00000111 ;
OutputIndex = OutputAddress >> 1;
Address = ( ( ( BoardAddress - 1 ) << 2 ) | OutputIndex ) + 1 ;
if( DccProcState.inAccDecDCCAddrNextReceivedMode)
{
if( DccProcState.Flags & FLAGS_OUTPUT_ADDRESS_MODE )
{
writeCV(CV_ACCESSORY_DECODER_ADDRESS_LSB, (uint8_t)(Address % 256));
writeCV(CV_ACCESSORY_DECODER_ADDRESS_MSB, (uint8_t)(Address / 256));
if( notifyDccAccOutputAddrSet )
notifyDccAccOutputAddrSet(Address);
}
else
{
writeCV(CV_ACCESSORY_DECODER_ADDRESS_LSB, (uint8_t)(BoardAddress % 64));
writeCV(CV_ACCESSORY_DECODER_ADDRESS_MSB, (uint8_t)(BoardAddress / 64));
if( notifyDccAccBoardAddrSet )
notifyDccAccBoardAddrSet(BoardAddress);
}
DccProcState.inAccDecDCCAddrNextReceivedMode = 0; // Reset the mode now that we have set the address
}
// If we're filtering was it my board address Our or a broadcast address
if( DccProcState.Flags & FLAGS_MY_ADDRESS_ONLY )
{
if( ( DccProcState.Flags & FLAGS_OUTPUT_ADDRESS_MODE ) && ( Address != getMyAddr() ) && ( Address < 2045 ) )
return;
else if( ( BoardAddress != getMyAddr() ) && ( BoardAddress != 511 ) )
return;
}
if(pDccMsg->Data[1] & 0b10000000)
{
uint8_t direction = OutputAddress & 0x01;
@@ -981,18 +1026,28 @@ void execDccProcessor( DCC_MSG * pDccMsg )
if( notifyDccAccState )
notifyDccAccState( Address, BoardAddress, OutputAddress, pDccMsg->Data[1] & 0b00001000 ) ;
if( notifyDccAccTurnoutBoard )
if( DccProcState.Flags & FLAGS_OUTPUT_ADDRESS_MODE )
{
if( notifyDccAccTurnoutOutput )
notifyDccAccTurnoutOutput( Address, direction, outputPower );
}
else
{
if( notifyDccAccTurnoutBoard )
notifyDccAccTurnoutBoard( BoardAddress, OutputIndex, direction, outputPower );
if( notifyDccAccTurnoutOutput )
notifyDccAccTurnoutOutput( Address, direction, outputPower );
}
}
else
{
uint8_t state = pDccMsg->Data[2] & 0b00011111;
if( notifyDccSigState )
notifyDccSigState( Address, OutputIndex, pDccMsg->Data[2] ) ;
notifyDccSigState( Address, OutputIndex, state ) ;
if( notifyDccSigOutputState )
notifyDccSigOutputState(Address, state);
}
}
}
@@ -1056,12 +1111,13 @@ void NmraDcc::init( uint8_t ManufacturerId, uint8_t VersionId, uint8_t Flags, ui
DccProcState.Flags = Flags ;
DccProcState.OpsModeAddressBaseCV = OpsModeAddressBaseCV ;
DccProcState.myDccAddress = -1;
DccProcState.inAccDecDCCAddrNextReceivedMode = 0;
// Set the Bits that control Multifunction or Accessory behaviour
// and if the Accessory decoder optionally handles Output Addressing
uint8_t cv29Mask = Flags & (CV29_ACCESSORY_DECODER | CV29_OUTPUT_ADDRESS_MODE) ; // peal off the top two bits
writeCV( CV_29_CONFIG, ( readCV( CV_29_CONFIG ) & ~cv29Mask ) | Flags ) ;
uint8_t cv29Mask = CV29_ACCESSORY_DECODER | CV29_OUTPUT_ADDRESS_MODE ; // peal off the top two bits
writeCV( CV_29_CONFIG, (readCV( CV_29_CONFIG ) & ~cv29Mask) | (Flags & cv29Mask));
writeCV( 7, VersionId ) ;
writeCV( 8, ManufacturerId ) ;
@@ -1117,6 +1173,11 @@ uint8_t NmraDcc::getBitCount(void)
}
#endif
void NmraDcc::setAccDecDCCAddrNextReceived(uint8_t enable)
{
DccProcState.inAccDecDCCAddrNextReceivedMode = enable;
}
uint8_t NmraDcc::process()
{
if( DccProcState.inServiceMode )

25
NmraDcc.h
View File

@@ -196,24 +196,25 @@ class NmraDcc
NmraDcc();
// Flag values to be logically ORed together and passed into the init() method
#define FLAGS_MY_ADDRESS_ONLY 0x01 // Only process DCC Packets with My Address
#define FLAGS_OUTPUT_ADDRESS_MODE 0x40 // CV 29/541 bit 6
#define FLAGS_DCC_ACCESSORY_DECODER 0x80 // CV 29/541 bit 7
void pin( uint8_t ExtIntNum, uint8_t ExtIntPinNum, uint8_t EnablePullup);
#define FLAGS_MY_ADDRESS_ONLY 0x01 // Only process DCC Packets with My Address
#define FLAGS_OUTPUT_ADDRESS_MODE 0x40 // CV 29/541 bit 6
#define FLAGS_DCC_ACCESSORY_DECODER 0x80 // CV 29/541 bit 7
void pin( uint8_t ExtIntNum, uint8_t ExtIntPinNum, uint8_t EnablePullup);
void init( uint8_t ManufacturerId, uint8_t VersionId, uint8_t Flags, uint8_t OpsModeAddressBaseCV );
void initAccessoryDecoder( uint8_t ManufacturerId, uint8_t VersionId, uint8_t Flags, uint8_t OpsModeAddressBaseCV );
uint8_t process();
uint8_t getCV( uint16_t CV );
uint8_t setCV( uint16_t CV, uint8_t Value);
uint8_t isSetCVReady( void );
uint16_t getAddr(void);
void setAccDecDCCAddrNextReceived(uint8_t enable);
uint8_t isSetCVReady( void );
uint16_t getAddr(void);
// #define DCC_DEBUG
#ifdef DCC_DEBUG
uint8_t getIntCount(void);
uint8_t getTickCount(void);
uint8_t getBitCount(void);
uint8_t getState(void);
uint8_t getIntCount(void);
uint8_t getTickCount(void);
uint8_t getBitCount(void);
uint8_t getState(void);
uint8_t getNestedIrqCount(void);
#endif
@@ -239,7 +240,11 @@ extern void notifyDccAccState( uint16_t Addr, uint16_t BoardAddr, uint8_t Output
extern void notifyDccAccTurnoutBoard( uint16_t BoardAddr, uint8_t OutputPair, uint8_t Direction, uint8_t OutputPower ) __attribute__ ((weak));
extern void notifyDccAccTurnoutOutput( uint16_t Addr, uint8_t Direction, uint8_t OutputPower ) __attribute__ ((weak));
extern void notifyDccAccBoardAddrSet( uint16_t BoardAddr) __attribute__ ((weak));
extern void notifyDccAccOutputAddrSet( uint16_t Addr) __attribute__ ((weak));
extern void notifyDccSigState( uint16_t Addr, uint8_t OutputIndex, uint8_t State) __attribute__ ((weak));
extern void notifyDccSigOutputState( uint16_t Addr, uint8_t State) __attribute__ ((weak));
extern void notifyDccMsg( DCC_MSG * Msg ) __attribute__ ((weak));

2
library.properties
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@@ -1,5 +1,5 @@
name=NmraDcc
version=1.4.2
version=1.4.3
author=Alex Shepherd, Wolfgang Kuffer, Geoff Bunza, Martin Pischky, Franz-Peter Müller, Sven (littleyoda)
maintainer=Alex Shepherd <kiwi64ajs@gmail.com>
sentence=Enables NMRA DCC Communication