Cayenne LPP2 protocol enhancements

include/payload.h

@@ -49,6 +49,7 @@ public:
   void addBME(bmeStatus_t value);
   void addButton(uint8_t value);
   void addSensor(uint8_t[]);
+  void addTime(time_t value);
 
 #if PAYLOAD_ENCODER == 1 // format plain
 

src/paxcounter.conf

@@ -49,28 +49,12 @@
 #define MAXLORARETRY                    500     // maximum count of TX retries if LoRa busy
 #define SEND_QUEUE_SIZE                 10       // maximum number of messages in payload send queue [1 = no queue]
 
-// Ports on which the device sends and listenes on LoRaWAN and SPI
+// Hardware settings
-#define COUNTERPORT                     1       // Port on which device sends counts
-#define RCMDPORT                        2       // Port on which device listenes for remote commands
-#define STATUSPORT                      2       // Port on which device sends remote command results
-#define CONFIGPORT                      3       // Port on which device sends config query results
-#define GPSPORT                         4       // Port on which device sends gps data
-#define BUTTONPORT                      5       // Port on which device sends button pressed signal
-#define LPP1PORT                        1       // Port for Cayenne LPP 1.0 dynamic sensor encoding
-#define LPP2PORT                        2       // Port for Cayenne LPP 2.0 packed sensor encoding
-#define BEACONPORT                      6       // Port on which device sends beacon alarms
-#define BMEPORT                         7       // Port on which device sends BME680 sensor data
-#define BATTPORT                        8       // Port on which device sends battery voltage data
-#define SENSOR1PORT                     10      // Port on which device sends User sensor #1 data
-#define SENSOR2PORT                     11      // Port on which device sends User sensor #2 data
-#define SENSOR3PORT                     12      // Port on which device sends User sensor #3 data
-
-// Some hardware settings
 #define RGBLUMINOSITY                   30      // RGB LED luminosity [default = 30%]
 #define DISPLAYREFRESH_MS               40      // OLED refresh cycle in ms [default = 40] -> 1000/40 = 25 frames per second
 #define HOMECYCLE                       30      // house keeping cycle in seconds [default = 30 secs]
 
-// Settings for BME680 environmental sensor (if present)
+// Settings for BME680 environmental sensor
 #define BME_TEMP_OFFSET                 5.0f    // Offset sensor on chip temp <-> ambient temp [default = 5°C]
 #define STATE_SAVE_PERIOD               UINT32_C(360 * 60 * 1000) // update every 360 minutes = 4 times a day
 
@@ -82,12 +66,36 @@
 #define RESPONSE_TIMEOUT_MS             60000   // firmware binary server connection timeout [milliseconds]
 
 // settings for syncing time of node with external time source
-#define TIME_SYNC_INTERVAL              10       // sync time each .. minutes from time source (GPS/LORA) [default = 10], comment out means off          
+#define TIME_SYNC_INTERVAL              2       // sync time attempt each .. minutes from time source (GPS/LORA), comment out means [default = 5]          
 #define TIME_SYNC_LORA                  1       // use LORA network as time source, comment out means off [default = off]
 
 // time zone, see https://github.com/JChristensen/Timezone/blob/master/examples/WorldClock/WorldClock.ino
 #define DAYLIGHT_TIME                   {"CEST", Last, Sun, Mar, 2, 120}     // Central European Summer Time
 #define STANDARD_TIME                   {"CET ", Last, Sun, Oct, 3, 60}      // Central European Standard Time
 
+// Ports on which the device sends and listenes on LoRaWAN and SPI
+#define COUNTERPORT                     1       // counts
+#define RCMDPORT                        2       // remote commands
+#define STATUSPORT                      2       // remote command results
+#define CONFIGPORT                      3       // config query results
+#define GPSPORT                         4       // gps
+#define BUTTONPORT                      5       // button pressed signal
+#define BEACONPORT                      6       // beacon alarms
+#define BMEPORT                         7       // BME680 sensor
+#define BATTPORT                        8       // battery voltage
+#define TIMEPORT                        9       // time
+#define SENSOR1PORT                     10      // user sensor #1
+#define SENSOR2PORT                     11      // user sensor #2
+#define SENSOR3PORT                     12      // user sensor #3
+
+// Cayenne LPP Ports, see https://community.mydevices.com/t/cayenne-lpp-2-0/7510
+#define CAYENNE_LPP1                    1       // dynamic sensor payload (LPP 1.0)
+#define CAYENNE_LPP2                    2       // packed sensor payload (LPP 2.0)
+#define CAYENNE_GPS                     3       // full scale GPS payload
+#define CAYENNE_ACTUATOR                10	    // actuator commands
+#define CAYENNE_DEVICECONFIG            11	    // device period configuration
+#define CAYENNE_SENSORREAD              13	    // sensor period configuration
+#define CAYENNE_SENSORENABLE            14	    // sensor enable configuration
+
 // LMIC settings 
-// moved to src/lmic_config.h
+// -> in src/lmic_config.h

src/payload.cpp

@@ -126,6 +126,14 @@ void PayloadConvert::addButton(uint8_t value) {
 #endif
 }
 
+void PayloadConvert::addTime(time_t value) {
+  uint32_t time = (uint32_t)value;
+  buffer[cursor++] = (byte)((time & 0xFF000000) >> 24);
+  buffer[cursor++] = (byte)((time & 0x00FF0000) >> 16);
+  buffer[cursor++] = (byte)((time & 0x0000FF00) >> 8);
+  buffer[cursor++] = (byte)((time & 0x000000FF));
+}
+
 /* ---------------- packed format with LoRa serialization Encoder ----------
  */
 // derived from
@@ -133,7 +141,9 @@ void PayloadConvert::addButton(uint8_t value) {
 
 #elif PAYLOAD_ENCODER == 2
 
-void PayloadConvert::addCount(uint16_t value, uint8_t snifftype) { writeUint16(value); }
+void PayloadConvert::addCount(uint16_t value, uint8_t snifftype) {
+  writeUint16(value);
+}
 
 void PayloadConvert::addAlarm(int8_t rssi, uint8_t msg) {
   writeUint8(rssi);
@@ -208,6 +218,11 @@ void PayloadConvert::addButton(uint8_t value) {
 #endif
 }
 
+void PayloadConvert::addTime(time_t value) {
+  uint32_t time = (uint32_t)value;
+  writeUint32(time);
+}
+
 void PayloadConvert::intToBytes(uint8_t pos, int32_t i, uint8_t byteSize) {
   for (uint8_t x = 0; x < byteSize; x++) {
     buffer[x + pos] = (byte)(i >> (x * 8));
@@ -436,6 +451,24 @@ void PayloadConvert::addButton(uint8_t value) {
 #endif // HAS_BUTTON
 }
 
+void PayloadConvert::addTime(time_t value) {
+#if (PAYLOAD_ENCODER == 4)
+  uint32_t t = (uint32_t)value;
+  uint32_t tx_period = (uint32_t)SEND_SECS * 2;
+  buffer[cursor++] = 0x03; // set config mask to UTCTime + TXPeriod
+  // UTCTime in seconds
+  buffer[cursor++] = (byte)((t & 0xFF000000) >> 24);
+  buffer[cursor++] = (byte)((t & 0x00FF0000) >> 16);
+  buffer[cursor++] = (byte)((t & 0x0000FF00) >> 8);
+  buffer[cursor++] = (byte)((t & 0x000000FF));
+  // TXPeriod in seconds
+  buffer[cursor++] = (byte)((tx_period & 0xFF000000) >> 24);
+  buffer[cursor++] = (byte)((tx_period & 0x00FF0000) >> 16);
+  buffer[cursor++] = (byte)((tx_period & 0x0000FF00) >> 8);
+  buffer[cursor++] = (byte)((tx_period & 0x000000FF));
+#endif
+}
+
 #else
 #error No valid payload converter defined!
 #endif

src/senddata.cpp

@@ -8,15 +8,26 @@ void SendPayload(uint8_t port, sendprio_t prio) {
 
   SendBuffer.MessageSize = payload.getSize();
   switch (PAYLOAD_ENCODER) {
-  case 1:
+  case 1: // plain -> no mapping
-  case 2:
+  case 2: // packed -> no mapping
     SendBuffer.MessagePort = port;
     break;
-  case 3:
+  case 3: // Cayenne LPP dynamic -> all payload goes out on same port
-    SendBuffer.MessagePort = LPP1PORT;
+    SendBuffer.MessagePort = CAYENNE_LPP1;
     break;
-  case 4:
+  case 4: // Cayenne LPP packed -> we need to map some paxcounter ports
-    SendBuffer.MessagePort = LPP2PORT;
+    SendBuffer.MessagePort = CAYENNE_LPP2;
+    switch (SendBuffer.MessagePort) {
+    case COUNTERPORT:
+      SendBuffer.MessagePort = CAYENNE_LPP2;
+      break;
+    case RCMDPORT:
+      SendBuffer.MessagePort = CAYENNE_ACTUATOR;
+      break;
+    case TIMEPORT:
+      SendBuffer.MessagePort = CAYENNE_DEVICECONFIG;
+      break;
+    }
     break;
   default:
     SendBuffer.MessagePort = port;