diff --git a/decoder-ttn.txt b/decoder-ttn.txt
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+++ b/decoder-ttn.txt
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+/*********************************************************************
+* The TTN Payload function equal for all environment applications
+**********************************************************************
+function Decoder(bytes, port) {
+ var retValue = {
+ bytes: bytes
+ };
+
+ retValue.node = bytes[0];
+ retValue.battery = bytes[1] / 10.0;
+ retValue.vcc = bytes[2] / 10.0;
+ retValue.temperature = (((bytes[3] << 8) | bytes[4]) / 10.0) - 40.0;
+ retValue.pressure = ((bytes[5] << 16) | (bytes[6] << 8) | bytes[7]);
+ retValue.humidity = ((bytes[8] << 8) | bytes[9]) / 10.0;
+ return retValue;
+}
+*********************************************************************/
diff --git a/images/board.jpg b/images/board.jpg
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diff --git a/images/sensor-bme280.jpg b/images/sensor-bme280.jpg
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diff --git a/sensor-abp-ttn.ino b/sensor-abp-ttn.ino
new file mode 100644
index 0000000..460d639
--- /dev/null
+++ b/sensor-abp-ttn.ino
@@ -0,0 +1,496 @@
+/* This file has been prepared for Doxygen **************************/
+
+/*! \file LoRa_Radio_Module_abp_s_BME280.ino **************************
+*
+* \brief Device ID 5935br27node004
+*
+* The payload for all environment nodes are standardized by:
+* 1. node (node identification, 0..255)
+* 2. battery (battery voltage [V])
+* 3. vcc (system power supply [V])
+* 4. temperature (environment air temperature [C])
+* 5. pressure (environment air pressure [Pa])
+* 6. humidity (environment air humidity [%])
+*
+* Copyright (C) 2019 W.Nijs (ALF4all)
+*
+* This program is free software: you can redistribute it and/or modify
+* it under the terms of the GNU General Public License as published by
+* the Free Software Foundation, either version 3 of the License, or
+* (at your option) any later version.
+*
+* This program is distributed in the hope that it will be useful,
+* but WITHOUT ANY WARRANTY; without even the implied warranty of
+* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+* GNU General Public License for more details.
+*
+* You should have received a copy of the GNU General Public License
+* along with this program. If not, see .
+*
+* \author W.Nijs.
+* \date 25/10/2019
+* \version 1.0 25/10/2019, initial revision, W.Nijs
+*
+*********************************************************************/
+
+/*********************************************************************
+* The TTN Payload function equal for all environment applications
+**********************************************************************
+function Decoder(bytes, port) {
+ var retValue = {
+ bytes: bytes
+ };
+
+ retValue.node = bytes[0];
+ retValue.battery = bytes[1] / 10.0;
+ retValue.vcc = bytes[2] / 10.0;
+ retValue.temperature = (((bytes[3] << 8) | bytes[4]) / 10.0) - 40.0;
+ retValue.pressure = ((bytes[5] << 16) | (bytes[6] << 8) | bytes[7]);
+ retValue.humidity = ((bytes[8] << 8) | bytes[9]) / 10.0;
+ return retValue;
+}
+*********************************************************************/
+
+
+/*****************************************************************//**
+* Include section
+*********************************************************************/
+
+#include
+#include
+#include
+#include
+#include
+
+
+/*****************************************************************//**
+* Define section
+*********************************************************************/
+
+#define LED 13 // on board LED
+#define BATTERY A0
+
+#define NODE_ID 1
+#define PAYLOAD_LENGHT 10
+#define SEA_LEVEL 101900 // [Pa]
+
+
+/*****************************************************************//**
+* Payload vars and objects for node, battery and the BME/P-280
+*********************************************************************/
+
+float node = 0;
+float battery = 0;
+float vcc = 0;
+
+BME280 bme280; // BME280 object
+float temperature = 0;
+float pressure = 0;
+float humidity = 0;
+float altitude = 0; // not used in the payload
+
+unsigned char payload[PAYLOAD_LENGHT]; // Payload
+
+
+/*****************************************************************//**
+* TTN keys and addresses for device ID 5935br27node000
+*********************************************************************/
+
+// LoRaWAN NwkSKey, network session key
+// Copy from TTN Console MSB first!
+static const PROGMEM u1_t NWKSKEY[16] = { 0x4D, 0x84, 0x88, 0x5D, 0xA6, 0xB9, 0x8C, 0x1D, 0x88, 0xE4, 0xEB, 0xB5, 0x54, 0x9D, 0x1F, 0x8E };
+
+// LoRaWAN AppSKey, application session key
+// Copy from TTN Console MSB first!
+static const u1_t PROGMEM APPSKEY[16] = { 0x23, 0xC0, 0xDA, 0x4A, 0xE3, 0x83, 0xD3, 0xC2, 0x65, 0xCF, 0x26, 0x3E, 0x2A, 0x76, 0xE3, 0x57 };
+
+// LoRaWAN end-device address (DevAddr)
+static const u4_t DEVADDR = { 0x26011995 }; // <-- Change this address for every node!
+
+// These callbacks are only used in over-the-air activation, so they are
+// left empty here (we cannot leave them out completely unless
+// DISABLE_JOIN is set in config.h, otherwise the linker will complain).
+void os_getArtEui (u1_t* buf) { }
+void os_getDevEui (u1_t* buf) { }
+void os_getDevKey (u1_t* buf) { }
+
+
+/*****************************************************************//**
+* LoRa vars
+*********************************************************************/
+//int sleepcycles = 75; // every sleep cycle takes 8 secs -> 10 min
+int sleepcycles = 8; // every sleep cycle takes 8 secs -> 1 min
+bool joined = false;
+bool sleeping = false;
+
+static osjob_t sendjob;
+
+
+/*****************************************************************//**
+* RFM95 pin mapping section
+* Mapping for the LoRa Radio Node
+*********************************************************************/
+
+const lmic_pinmap lmic_pins = {
+ .nss = 10,
+ .rxtx = LMIC_UNUSED_PIN,
+ .rst = 9,
+ .dio = {/*dio0*/ 2, /*dio1*/ 5, /*dio2*/ 6},
+};
+
+
+/*****************************************************************//**
+* readBattery()
+*********************************************************************/
+
+float readBattery(void) {
+ float sensor = 0;
+ float result = 0;
+
+ sensor = analogRead(BATTERY);
+
+ // 2M, 470K divider across battery and using the internal ADC ref
+ // of 1.1V.
+ // The sense point is bypassed with 100 nF to reduce noise at that
+ // point.
+ // Vmax = ((2e6+470e3)/470e3)*1.1V = 5,78V
+ // Resolution = 5,78/1023 = 5.65mV/bit
+ // Voltage divider current = 3V/2.47M = 1.22uA
+ result = sensor * 0.00565;
+
+ return result; // Return battery voltage in V
+};
+
+
+/*****************************************************************//**
+* readVcc()
+*********************************************************************/
+
+float readVcc(void) {
+ float result = 0;
+
+ ADMUX = _BV(REFS0) | _BV(MUX3) | _BV(MUX2) | _BV(MUX1);
+ delay(2); // Wait for Vref to settle
+
+ ADCSRA |= _BV(ADSC); // Start conversion
+ while (bit_is_set(ADCSRA,ADSC)); // Wait conversion is ready
+
+ uint8_t low = ADCL; // Read ADCL first - it then locks ADCH
+ uint8_t high = ADCH; // unlocks both
+ result = (float)((high<<8) | low);
+
+ result = 1125300L/result; // Calculate battery voltage in mV
+ return (result/1000); // Return battery voltage in V
+};
+
+
+/*****************************************************************//**
+* getParameters()
+*********************************************************************/
+
+void getParameters(void) {
+ node = NODE_ID;
+ battery = readBattery(); // [V 0.1]
+ vcc = readVcc(); // [V 0.1]
+ temperature = bme280.readTempC(); // [C 0.1]
+ pressure = bme280.readFloatPressure(); // [Pa 1]
+ humidity = bme280.readFloatHumidity(); // [% 0.1]
+ // not a part of the payload:
+ altitude = bme280.readFloatAltitudeMeters(); // [m 0.01]
+};
+
+
+/*****************************************************************//**
+* payloadEncode()
+*********************************************************************/
+
+void payloadEncode(void) {
+ int i = 0;
+
+ // Payload encode algorithm
+ // nod [0..255]
+ // bat [0.0..5.5V] => bat = bat * 10; => [0..55]
+ // vcc [0.0..5.5V] => vcc = vcc * 10; => [0..55]
+ // tmp [-40..85C] => tmp = tmp + 40; => [0..125] => tmp = tmp * 10; => [0..1250]
+ // prs [30000..110000Pa]
+ // hum [0.0..100.0% RH] => hum = hum * 10 => [0..1000]
+
+ unsigned int nod = (unsigned char)(node);
+ unsigned char bat = (unsigned char)(battery * 10);
+ unsigned char mcu = (unsigned char)(vcc * 10);
+ unsigned int tmp = (unsigned int)((temperature + 40.0) * 10.0);
+ unsigned long prs = (unsigned long)(pressure);
+ unsigned int hum = (unsigned int)(humidity * 10);
+
+ payload[i++] = nod; // nod => 1 byte
+ payload[i++] = bat; // bat => 1 byte
+ payload[i++] = mcu; // vcc => 1 byte
+ payload[i++] = tmp >> 8; // tmp => 2 bytes
+ payload[i++] = tmp;
+ payload[i++] = prs >> 16; // prs => 3 bytes
+ payload[i++] = prs >> 8;
+ payload[i++] = prs;
+ payload[i++] = hum >> 8; // hum => 2 bytes
+ payload[i++] = hum;
+};
+
+
+/*****************************************************************//**
+* parameter_print()
+* Only for debugging
+*********************************************************************/
+
+void parameterPrint(void) {
+/* Serial.print("Node id = ");
+ Serial.println(node, 0);
+
+ Serial.print("Battery = ");
+ Serial.print(battery, 1);
+ Serial.println(" V");
+
+ Serial.print("Vcc = ");
+ Serial.print(vcc, 1);
+ Serial.println(" V");
+
+ Serial.print("Temperature = ");
+ Serial.print(temperature, 1);
+ Serial.println(" *C");
+
+ Serial.print("Pressure = ");
+ Serial.print((pressure), 0);
+ Serial.println(" Pa");
+
+ Serial.print("Humidity = ");
+ Serial.print(humidity, 1);
+ Serial.println(" %");
+
+ Serial.print("Altitude = ");
+ Serial.print(altitude, 2);
+ Serial.println(" m");
+*/
+};
+
+
+/*****************************************************************//**
+* payload_print()
+* Only for debugging
+*********************************************************************/
+
+void payloadPrint(void) {
+ int i = 0;
+
+ Serial.print("Payload = ");
+
+ for (i = 0; i < PAYLOAD_LENGHT; i++ ) {
+ if (payload[i] < 16)
+ Serial.print("0");
+ Serial.print(payload[i], HEX);
+ Serial.print(" ");
+ };
+ Serial.println("");
+};
+
+
+/*****************************************************************//**
+* onEvent()
+* Event handler
+*********************************************************************/
+
+void onEvent (ev_t ev) {
+ Serial.print(os_getTime());
+ Serial.print(": ");
+ switch(ev) {
+ case EV_SCAN_TIMEOUT:
+ Serial.println(F("EV_SCAN_TIMEOUT"));
+ break;
+ case EV_BEACON_FOUND:
+ Serial.println(F("EV_BEACON_FOUND"));
+ break;
+ case EV_BEACON_MISSED:
+ Serial.println(F("EV_BEACON_MISSED"));
+ break;
+ case EV_BEACON_TRACKED:
+ Serial.println(F("EV_BEACON_TRACKED"));
+ break;
+ case EV_JOINING:
+ Serial.println(F("EV_JOINING"));
+ break;
+ case EV_JOINED:
+ Serial.println(F("EV_JOINED"));
+ break;
+ case EV_RFU1:
+ Serial.println(F("EV_RFU1"));
+ break;
+ case EV_JOIN_FAILED:
+ Serial.println(F("EV_JOIN_FAILED"));
+ break;
+ case EV_REJOIN_FAILED:
+ Serial.println(F("EV_REJOIN_FAILED"));
+ break;
+ case EV_TXCOMPLETE:
+ sleeping = true;
+ Serial.println(F("EV_TXCOMPLETE (includes waiting for RX windows)"));
+ if (LMIC.txrxFlags & TXRX_ACK)
+ Serial.println(F("Received ack"));
+ if (LMIC.dataLen) {
+ Serial.println(F("Received "));
+ Serial.println(LMIC.dataLen);
+ Serial.println(F(" bytes of payload"));
+ }
+ delay(50); // delay to complete Serial Output before Sleeping
+ break;
+ case EV_LOST_TSYNC:
+ Serial.println(F("EV_LOST_TSYNC"));
+ break;
+ case EV_RESET:
+ Serial.println(F("EV_RESET"));
+ break;
+ case EV_RXCOMPLETE:
+ // data received in ping slot
+ Serial.println(F("EV_RXCOMPLETE"));
+ break;
+ case EV_LINK_DEAD:
+ Serial.println(F("EV_LINK_DEAD"));
+ break;
+ case EV_LINK_ALIVE:
+ Serial.println(F("EV_LINK_ALIVE"));
+ break;
+ default:
+ Serial.println(F("Unknown event"));
+ break;
+ };
+};
+
+
+/*****************************************************************//**
+* sendMessage()
+*
+*********************************************************************/
+
+void sendMessage(osjob_t* j) {
+ getParameters();
+ parameterPrint(); // Optional, only for debugging
+ payloadEncode();
+ payloadPrint(); // Optional, only for debugging
+
+ // First check if there is not a current TX/RX job running
+ if (LMIC.opmode & OP_TXRXPEND) {
+ Serial.println(F("OP_TXRXPEND, not sending"));
+ } else {
+ // Prepare upstream data transmission at the next possible time.
+ LMIC_setTxData2(1, (uint8_t*)payload, PAYLOAD_LENGHT, 0);
+ Serial.println(F("Sending: "));
+ };
+};
+
+
+/*****************************************************************//**
+* Setup function
+*********************************************************************/
+
+void setup() {
+ Serial.begin(115200);
+ Serial.println(F("=================="));
+ Serial.println(F("- TTN BME280 ABP -"));
+ Serial.println(F("- ALF4all -"));
+ Serial.println(F("=================="));
+
+ digitalWrite(LED, LOW); // init LED_BUILTIN as LOW
+ pinMode(LED, OUTPUT); // init LED_BUILTIN as an output
+ analogReference(INTERNAL); // 1.1V ref for readBattery(void)
+
+ bme280.setI2CAddress(0x76); // Attention:
+ // Aliexpress is 0x76
+ // Sparkfun and Adafruit is 0x77
+ bme280.reset();
+ bme280.begin();
+ bool status;
+ if (bme280.beginI2C() == false) {
+ Serial.println(F("Sensor did not respond, check wiring."));
+ // while(1); // Freeze... with no action???
+ };
+
+ bme280.setReferencePressure(SEA_LEVEL);
+
+ // LMIC init
+ os_init();
+ // Reset the MAC state. Session and pending data transfers will be discarded.
+ LMIC_reset();
+
+ // Set static session parameters. Instead of dynamically establishing a session
+ // by joining the network, precomputed session parameters are be provided.
+ #ifdef PROGMEM
+ // On AVR, these values are stored in flash and only copied to RAM
+ // once. Copy them to a temporary buffer here, LMIC_setSession will
+ // copy them into a buffer of its own again.
+ uint8_t appskey[sizeof(APPSKEY)];
+ uint8_t nwkskey[sizeof(NWKSKEY)];
+ memcpy_P(appskey, APPSKEY, sizeof(APPSKEY));
+ memcpy_P(nwkskey, NWKSKEY, sizeof(NWKSKEY));
+ LMIC_setSession (0x1, DEVADDR, nwkskey, appskey);
+ #else
+ // If not running an AVR with PROGMEM, just use the arrays directly
+ LMIC_setSession (0x1, DEVADDR, NWKSKEY, APPSKEY);
+ #endif
+
+ #if defined(CFG_eu868)
+ // Set up the channels used by the Things Network, which corresponds
+ // to the defaults of most gateways. Without this, only three base
+ // channels from the LoRaWAN specification are used, which certainly
+ // works, so it is good for debugging, but can overload those
+ // frequencies, so be sure to configure the full frequency range of
+ // your network here (unless your network autoconfigures them).
+ // Setting up channels should happen after LMIC_setSession, as that
+ // configures the minimal channel set.
+ // NA-US channels 0-71 are configured automatically
+ LMIC_setupChannel(0, 868100000, DR_RANGE_MAP(DR_SF12, DR_SF7), BAND_CENTI); // g-band
+ LMIC_setupChannel(1, 868300000, DR_RANGE_MAP(DR_SF12, DR_SF7B), BAND_CENTI); // g-band
+ LMIC_setupChannel(2, 868500000, DR_RANGE_MAP(DR_SF12, DR_SF7), BAND_CENTI); // g-band
+ LMIC_setupChannel(3, 867100000, DR_RANGE_MAP(DR_SF12, DR_SF7), BAND_CENTI); // g-band
+ LMIC_setupChannel(4, 867300000, DR_RANGE_MAP(DR_SF12, DR_SF7), BAND_CENTI); // g-band
+ LMIC_setupChannel(5, 867500000, DR_RANGE_MAP(DR_SF12, DR_SF7), BAND_CENTI); // g-band
+ LMIC_setupChannel(6, 867700000, DR_RANGE_MAP(DR_SF12, DR_SF7), BAND_CENTI); // g-band
+ LMIC_setupChannel(7, 867900000, DR_RANGE_MAP(DR_SF12, DR_SF7), BAND_CENTI); // g-band
+ LMIC_setupChannel(8, 868800000, DR_RANGE_MAP(DR_FSK, DR_FSK), BAND_MILLI); // g2-band
+ // TTN defines an additional channel at 869.525Mhz using SF9 for class B
+ // devices' ping slots. LMIC does not have an easy way to define set this
+ // frequency and support for class B is spotty and untested, so this
+ // frequency is not configured here.
+ #elif defined(CFG_us915)
+ // NA-US channels 0-71 are configured automatically
+ // but only one group of 8 should (a subband) should be active
+ // TTN recommends the second sub band, 1 in a zero based count.
+ // https://github.com/TheThingsNetwork/gateway-conf/blob/master/US-global_conf.json
+ LMIC_selectSubBand(1);
+ #endif
+
+ // Disable link check validation
+ LMIC_setLinkCheckMode(0);
+
+ // TTN uses SF9 for its RX2 window.
+ LMIC.dn2Dr = DR_SF9;
+
+ // Set data rate and transmit power for uplink (note: txpow seems to be ignored by the library)
+ LMIC_setDrTxpow(DR_SF7,14);
+
+ // Start job
+ sendMessage(&sendjob);
+};
+
+
+/*****************************************************************//**
+* Loop function
+*********************************************************************/
+
+void loop() {
+ sendMessage(&sendjob); // Transmit sensor values
+
+ // go sleeping
+ while(sleeping == false) {
+ os_runloop_once();
+ };
+ sleeping = false;
+ for (int i=0;i