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LocoNetDisplayMsg.ino
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LocoNetDisplayMsg.ino
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//=== LocoNetDispalyMsg.ino for LocoIO usable with OLED ===
#if defined LCD
// current LCD size: 16 chars in 2 lines
#define COUNT_OF_CHARS 16
#define COUNT_OF_LINES 2
#endif
#if defined OLED
// current OLED size: 128 x 64 px == 21 chars in 8 lines
// we use defines instead of '#include <OLEDPanel.h>' => this gives more flexibility e.g. for TFT
#define COUNT_OF_CHARS 21
#define COUNT_OF_LINES 8
#endif
#define OPC_LOCO_F912 0xA3
enum { None = 0, SerialPass = 1, LocoPass = 2, SerialError = 5, LocoError = 6 };
String displayStrings[COUNT_OF_LINES];
short displayLineIndex = 0;
boolean b_NewMonitorTelegram = false;
boolean HasNewMonitorTelegram() { return b_NewMonitorTelegram; }
void clearDisplayStrings()
{
for (int i = 0; i < COUNT_OF_LINES; i++)
displayStrings[i] = "";
}
String getByteAsHEXString(const byte oneByte)
{
String byteString(String(oneByte, HEX));
byteString.toUpperCase();
if (byteString.length() < 2)
byteString = "0" + byteString;
return byteString;
}
void addAdressAndStateFromB0B1B2(const byte bytes[])
{
//--- following similar to: ...\libraries\LocoNet\LocoNet.cpp [uint8_t LocoNetClass::processSwitchSensorMessage(lnMsg* LnPacket)]
uint16_t Address(bytes[1] | ((bytes[2] & 0x0F) << 7));
if (bytes[0] != OPC_INPUT_REP)
Address++;
else
{
Address <<= 1;
Address += (bytes[2] & OPC_INPUT_REP_SW) ? 2 : 1;
}
//---
displayStrings[displayLineIndex] += getByteAsHEXString((uint8_t)(Address >> 8));
displayStrings[displayLineIndex] += getByteAsHEXString((uint8_t)(Address & 0xFF));
displayStrings[displayLineIndex] += ' ';
displayStrings[displayLineIndex] += getByteAsHEXString(bytes[2] & 0xF0);
}
void addByte1AndByte2(const byte bytes[])
{
displayStrings[displayLineIndex] += getByteAsHEXString(bytes[1]);
displayStrings[displayLineIndex] += ' ';
displayStrings[displayLineIndex] += getByteAsHEXString(bytes[2]);
}
byte getMessageLength(const byte bytes[], byte byteCount)
{
byte messageLength(0);
if (byteCount)
{
switch (bytes[0] & 0xE0)
{
case 0xE0: //N byte message
if (byteCount >= 2 ) //length byte available
messageLength = bytes[1];
break;
case 0xC0: //6 byte message
messageLength = 6;
break;
case 0xA0: //4 byte message
messageLength = 4;
break;
case 0x80: //2 byte message
messageLength = 2;
break;
} // switch (bytes[0] & 0xE0)
} // if (byteCount)
return messageLength;
} // byte getMessageLength(const byte bytes[], byte byteCount)
void updateDisplayStrings(const uint8_t messageState, const byte bytes[], const byte byteCount)
{
incrementDisplayLine();
switch (messageState)
{
case SerialPass:
displayStrings[displayLineIndex] = F(" > :");
break;
case SerialError:
displayStrings[displayLineIndex] = F(" >X:");
break;
case LocoPass:
displayStrings[displayLineIndex] = F(" < :");
break;
case LocoError:
displayStrings[displayLineIndex] = F("X< :");
break;
default:
displayStrings[displayLineIndex] = "";
} // switch (messageState)
// check for decodeable messages:
switch(bytes[0])
{
case OPC_BUSY: // 0x81
displayStrings[displayLineIndex] += F("BUSY");
break;
case OPC_GPOFF: // 0x82
displayStrings[displayLineIndex] += F("GPOFF");
break;
case OPC_GPON: // 0x83
displayStrings[displayLineIndex] += F("GPON");
break;
case OPC_IDLE: // 0x85
displayStrings[displayLineIndex] += F("IDLE");
break;
case OPC_SW_REQ: // 0xB0
displayStrings[displayLineIndex] += F("SW_REQ ");
addAdressAndStateFromB0B1B2(bytes);
break;
case OPC_SW_REP: // 0xB1
displayStrings[displayLineIndex] += F("SW_REP ");
addAdressAndStateFromB0B1B2(bytes);
break;
case OPC_INPUT_REP: // 0xB2
displayStrings[displayLineIndex] += F("INPUT_REP ");
addAdressAndStateFromB0B1B2(bytes);
break;
case OPC_LONG_ACK: // 0xB4
displayStrings[displayLineIndex] += F("LACK ");
addByte1AndByte2(bytes);
break;
case OPC_MOVE_SLOTS: // 0xBA
displayStrings[displayLineIndex] += F("MOVE_SLOT ");
addByte1AndByte2(bytes);
break;
case OPC_RQ_SL_DATA: // 0xBB
displayStrings[displayLineIndex] += F("RQ_SL_DATA ");
displayStrings[displayLineIndex] += getByteAsHEXString(bytes[1]);
break;
case OPC_SW_STATE: // 0xBC
displayStrings[displayLineIndex] += F("SW_STATE ");
addAdressAndStateFromB0B1B2(bytes);
case OPC_LOCO_ADR: // 0xBF
displayStrings[displayLineIndex] += F("LOCO_ADR ");
displayStrings[displayLineIndex] += getByteAsHEXString(bytes[1]);
displayStrings[displayLineIndex] += getByteAsHEXString(bytes[2]);
break;
case OPC_LOCO_SPD: // 0xA0
case OPC_LOCO_DIRF: // 0xA1
case OPC_LOCO_SND: // 0xA2
case OPC_LOCO_F912: // 0xA3
if(bytes[0] == OPC_LOCO_SPD)
displayStrings[displayLineIndex] += F("LOCO_SPD ");
else if(bytes[0] == OPC_LOCO_DIRF)
displayStrings[displayLineIndex] += F("LOCO_DIRF ");
else if(bytes[0] == OPC_LOCO_SND)
displayStrings[displayLineIndex] += F("LOCO_SND ");
else
displayStrings[displayLineIndex] += F("LOCO_F912 ");
addByte1AndByte2(bytes);
break;
default:
for (int i = 0; i < byteCount; i++)
{
if ( i && !(i % 8) )
{ // go to next line after 8 bytes
incrementDisplayLine();
displayStrings[displayLineIndex] = messageState == None ? F(" ") : F(" ");
}
displayStrings[displayLineIndex] += getByteAsHEXString(bytes[i]);
} // for ( int i = 0; i < byteCount; i++)
break;
} // switch(bytes[0])
} // void updateDisplayStrings(MessageStates messageState, const byte bytes[], byte byteCount)
bool testCheckSum(const byte bytes[], const byte byteCount)
{
byte check(0);
for (int i = 0; i < byteCount; i++)
check ^= bytes[i];
return check == 0xFF;
}
void incrementDisplayLine()
{
displayLineIndex++;
if (displayLineIndex >= COUNT_OF_LINES)
{
if (displayStrings[COUNT_OF_LINES].length())
{
for (int i = 1; i < COUNT_OF_LINES; i++)
displayStrings[i - 1] = displayStrings[i];
}
displayLineIndex = COUNT_OF_LINES - 1;
}
} // void incrementDisplayLine()
void monitorLocoNetMessage(volatile lnMsg* lnPacket, const uint8_t messageState)
{
if (isLNMonitorActive() && lnPacket)
{
// Get the length of the received packet
const byte Length(getLnMsgSize(lnPacket));
if (testCheckSum(lnPacket->data, Length))
updateDisplayStrings(messageState, lnPacket->data, Length);
else
updateDisplayStrings(messageState | 0x04, lnPacket->data, Length);
b_NewMonitorTelegram = true;
}
} // void monitorLocoNetMessage(volatile lnMsg* lnPacket)
String getDisplayString(uint8_t iLine)
{
if(iLine >= COUNT_OF_LINES)
return "";
if(iLine == (COUNT_OF_LINES - 1) )
b_NewMonitorTelegram = false;
return displayStrings[iLine];
} // String getDisplayString(uint8_t iLine)