add feature send battery voltage data

README.md

@@ -181,7 +181,7 @@ Hereafter described is the default *plain* format, which uses MSB bit numbering.
 	bytes 18-28:	Software version (ASCII format, terminating with zero)
 
 
-**Port #4:** GPS query result (device answers only if has GPS and GPS has a fix)
+**Port #4:** GPS data (only if device has fature GPS, and GPS data is enabled and GPS has a fix)
 
 	bytes 1-4:	Latitude
 	bytes 5-8:	Longitude
@@ -198,7 +198,7 @@ Hereafter described is the default *plain* format, which uses MSB bit numbering.
 	byte 1:		Beacon RSSI reception level
 	byte 2:		Beacon identifier (0..255)
 
-**Port #7:** Environmental sensor query result
+**Port #7:** Environmental sensor data (only if device has feature BME)
 
 	bytes 1-2:	Temperature [°C]
 	bytes 3-4:	Pressure [hPa]
@@ -213,6 +213,10 @@ Hereafter described is the default *plain* format, which uses MSB bit numbering.
 	201-300 	worse
 	301-500 	very bad
 
+**Port #8:** Battery voltage data (only if device has feature BATT)
+
+  	byte 1-2:	Battery or USB Voltage [mV], 0 if no battery probe
+
 # Remote control
 
 The device listenes for remote control commands on LoRaWAN Port 2. Multiple commands per downlink are possible by concatenating them.

include/globals.h

@@ -17,7 +17,7 @@
 #define SENSOR1_DATA (0x10)
 #define SENSOR2_DATA (0x20)
 #define SENSOR3_DATA (0x40)
-#define SENSOR4_DATA (0x80)
+#define BATT_DATA (0x80)
 
 // bits in configmask for device runmode control
 #define GPS_MODE (0x01)

include/payload.h

@@ -44,6 +44,7 @@ public:
   void addStatus(uint16_t voltage, uint64_t uptime, float cputemp, uint32_t mem,
                  uint8_t reset1, uint8_t reset2);
   void addAlarm(int8_t rssi, uint8_t message);
+  void addVoltage(uint16_t value);
   void addGPS(gpsStatus_t value);
   void addBME(bmeStatus_t value);
   void addButton(uint8_t value);

platformio.ini

@@ -29,7 +29,7 @@ description = Paxcounter is a proof-of-concept ESP32 device for metering passeng
 
 [common]
 ; for release_version use max. 10 chars total, use any decimal format like "a.b.c"
-release_version = 1.6.95
+release_version = 1.6.96
 ; DEBUG LEVEL: For production run set to 0, otherwise device will leak RAM while running!
 ; 0=None, 1=Error, 2=Warn, 3=Info, 4=Debug, 5=Verbose
 debug_level = 0

src/paxcounter.conf

@@ -11,7 +11,7 @@
 
 // Payload send cycle and encoding
 #define SEND_SECS                       30      // payload send cycle [seconds/2] -> 60 sec.
-#define PAYLOAD_ENCODER                 3       // payload encoder: 1=Plain, 2=Packed, 3=CayenneLPP dynamic, 4=CayenneLPP packed
+#define PAYLOAD_ENCODER                 2       // payload encoder: 1=Plain, 2=Packed, 3=CayenneLPP dynamic, 4=CayenneLPP packed
 
 // Set this to include BLE counting and vendor filter functions
 #define VENDORFILTER                    1       // comment out if you want to count things, not people
@@ -54,16 +54,16 @@
 #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 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
-#define SENSOR4PORT                     13      // Port on which device sends User sensor #4 data
 
 // Some hardware settings
 #define RGBLUMINOSITY                   30      // RGB LED luminosity [default = 30%]

src/payload.cpp

@@ -30,6 +30,11 @@ void PayloadConvert::addAlarm(int8_t rssi, uint8_t msg) {
   buffer[cursor++] = msg;
 }
 
+void PayloadConvert::addVoltage(uint16_t value) {
+  buffer[cursor++] = highByte(value);
+  buffer[cursor++] = lowByte(value);
+}
+
 void PayloadConvert::addConfig(configData_t value) {
   buffer[cursor++] = value.lorasf;
   buffer[cursor++] = value.txpower;
@@ -140,6 +145,8 @@ void PayloadConvert::addAlarm(int8_t rssi, uint8_t msg) {
   writeUint8(msg);
 }
 
+void PayloadConvert::addVoltage(uint16_t value) { writeUint16(value); }
+
 void PayloadConvert::addConfig(configData_t value) {
   writeUint8(value.lorasf);
   writeUint8(value.txpower);
@@ -160,7 +167,7 @@ void PayloadConvert::addConfig(configData_t value) {
               value.payloadmask && SENSOR1_DATA ? true : false,
               value.payloadmask && SENSOR2_DATA ? true : false,
               value.payloadmask && SENSOR3_DATA ? true : false,
-              value.payloadmask && SENSOR4_DATA ? true : false);
+              value.payloadmask && BATT_DATA ? true : false);
   writeVersion(value.version);
 }
 
@@ -309,6 +316,16 @@ void PayloadConvert::addAlarm(int8_t rssi, uint8_t msg) {
   buffer[cursor++] = rssi;
 }
 
+void PayloadConvert::addVoltage(uint16_t value) {
+   uint16_t volt = value / 10;
+#if (PAYLOAD_ENCODER == 3)
+  buffer[cursor++] = LPP_BATT_CHANNEL;
+#endif
+  buffer[cursor++] = LPP_ANALOG_INPUT;
+  buffer[cursor++] = highByte(volt);
+  buffer[cursor++] = lowByte(volt);
+}
+
 void PayloadConvert::addConfig(configData_t value) {
 #if (PAYLOAD_ENCODER == 3)
   buffer[cursor++] = LPP_ADR_CHANNEL;

src/rcommand.cpp

@@ -138,7 +138,6 @@ void set_sensor(uint8_t val[]) {
   case 1:
   case 2:
   case 3:
-  case 4:
     break; // valid sensor number -> continue
   default:
     ESP_LOGW(

src/senddata.cpp

@@ -72,31 +72,29 @@ void sendCounter() {
 #endif
 
 #ifdef HAS_SENSORS
-
     case SENSOR1_DATA:
       payload.reset();
       payload.addSensor(sensor_read(1));
       SendPayload(SENSOR1PORT);
       break;
-
     case SENSOR2_DATA:
       payload.reset();
       payload.addSensor(sensor_read(2));
       SendPayload(SENSOR2PORT);
       break;
-
     case SENSOR3_DATA:
       payload.reset();
       payload.addSensor(sensor_read(3));
       SendPayload(SENSOR3PORT);
       break;
+#endif
 
-    case SENSOR4_DATA:
+#ifdef HAS_BATTERY_PROBE
+    case BATT_DATA:
       payload.reset();
-      payload.addSensor(sensor_read(4));
+      payload.addVoltage(read_voltage());
-      SendPayload(SENSOR4PORT);
+      SendPayload(BATTPORT);
       break;
-
 #endif
 
     } // switch

src/sensor.cpp

@@ -24,7 +24,7 @@ uint8_t sensor_mask(uint8_t sensor_no) {
   case 3:
     return (uint8_t)SENSOR3_DATA;
   case 4:
-    return (uint8_t)SENSOR4_DATA;
+    return (uint8_t)BATT_DATA;
   case 5:
     return (uint8_t)GPS_DATA;
   case 6:
@@ -64,14 +64,6 @@ uint8_t *sensor_read(uint8_t sensor) {
     buf[2] = 0xa0;
     buf[3] = 0x03;
     break;
-
-  case 4:
-
-    buf[0] = length;
-    buf[1] = 0xff;
-    buf[2] = 0xa0;
-    buf[3] = 0x04;
-    break;
   }
 
   return buf;