314 lines
7.1 KiB
C++
314 lines
7.1 KiB
C++
#include <Arduino.h>
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#include <LoRa.h>
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#include <APRS-Decoder.h>
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#include <TinyGPS++.h>
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#include <TimeLib.h>
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#include <WiFi.h>
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#include "settings.h"
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#include "display.h"
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#include "pins.h"
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#include "power_management.h"
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#include "power_management.h"
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PowerManagement powerManagement;
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HardwareSerial ss(1);
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TinyGPSPlus gps;
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void setup_lora();
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void setup_gps();
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String create_lat_aprs(RawDegrees lat);
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String create_long_aprs(RawDegrees lng);
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String createDateString(time_t t);
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String createTimeString(time_t t);
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static bool send_update = true;
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// Initial lat/lng pos, change to your base station coordnates
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float lastTxLat = 0;
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float lastTxLng = 0;
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float lastTxdistance;
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unsigned long txInterval = 60000L; // Initial 60 secs internal
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int previousHeading, currentHeading, headingDelta, headingTresh = 0;
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int lastTxTime = millis();
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// cppcheck-suppress unusedFunction
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void setup()
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{
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Serial.begin(115200);
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#ifdef TTGO_T_Beam_V1_0
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Wire.begin(SDA, SCL);
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if (!powerManagement.begin(Wire))
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{
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Serial.println("[INFO] AXP192 init done!");
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}
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else
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{
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Serial.println("[ERROR] AXP192 init failed!");
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}
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powerManagement.activateLoRa();
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powerManagement.activateOLED();
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powerManagement.activateGPS();
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powerManagement.activateMeasurement();
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#endif
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delay(500);
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Serial.println("[INFO] LoRa APRS Tracker by OE5BPA (Peter Buchegger)");
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setup_display();
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show_display("OE5BPA", "LoRa APRS Tracker", "by Peter Buchegger", 2000);
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#ifdef SB_ACTIVE
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Serial.println("[INFO] Smart Beaconing Active");
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show_display("DJ1AN", "Smart Beaconing","Active", 1000);
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#endif
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setup_gps();
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setup_lora();
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// make sure wifi and bt is off as we don't need it:
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WiFi.mode(WIFI_OFF);
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btStop();
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delay(500);
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Serial.println("[INFO] setup done...");
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}
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// cppcheck-suppress unusedFunction
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void loop()
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{
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#if !defined(DEBUGMODE)
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while (ss.available() > 0)
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{
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char c = ss.read();
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//Serial.print(c);
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gps.encode(c);
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}
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#else
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while (Serial.available() > 0)
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{
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char c = Serial.read();
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//Serial.print(c);
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gps.encode(c);
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}
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#endif
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bool gps_time_update = gps.time.isUpdated();
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bool gps_loc_update = gps.location.isUpdated();
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static time_t nextBeaconTimeStamp = -1;
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if(gps.time.isValid())
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{
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setTime(gps.time.hour(),gps.time.minute(),gps.time.second(),gps.date.day(),gps.date.month(),gps.date.year());
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if (nextBeaconTimeStamp <= now() || nextBeaconTimeStamp == -1)
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{
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send_update = true;
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}
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}
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#ifdef SB_ACTIVE
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send_update = false;
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if ( gps_loc_update )
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{
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lastTxdistance = TinyGPSPlus::distanceBetween(
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gps.location.lat(),
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gps.location.lng(),
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lastTxLat,
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lastTxLng
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);
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// Get headings and heading delta
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currentHeading = (int) gps.course.deg();
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if ( currentHeading >= 180 )
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{
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currentHeading = currentHeading-180;
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}
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headingDelta = (int) ( previousHeading - currentHeading ) % 360;
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int turn_slope = 100;
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headingTresh = (float) SB_TURN_MIN + turn_slope / gps.speed.kmph();
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int lastTx = millis() - lastTxTime;
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if ( lastTx > SB_MIN_BCN * 1000)
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{
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//send_update = true;
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// Check for heading more than 25 degrees
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if ( (headingDelta < -SB_TURN_MIN || headingDelta > SB_TURN_MIN) && lastTxdistance > SB_MIN_TX_DIST )
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{
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send_update = true;
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}
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}
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if ( lastTx >= txInterval )
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{
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// Trigger Tx Tracker when Tx interval is reach
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// Will not Tx if stationary bcos speed < 5 and lastTxDistance < 20
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if ( lastTxdistance > 20 )
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{
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send_update = true;
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}
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}
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}
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#endif
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if(send_update && gps.location.isValid() && gps_loc_update)
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{
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powerManagement.deactivateMeasurement();
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nextBeaconTimeStamp = now() + (BEACON_TIMEOUT * SECS_PER_MIN);
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send_update = false;
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APRSMessage msg;
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msg.setSource(CALL);
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msg.setDestination("APLT0");
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String lat = create_lat_aprs(gps.location.rawLat());
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String lng = create_long_aprs(gps.location.rawLng());
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msg.getAPRSBody()->setData(String("=") + lat + SYMBOL_OVERLAY + lng + SYMBOL_CODE + BEACON_MESSAGE);
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String data = msg.encode();
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Serial.println(data);
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show_display("<< TX >>", data);
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LoRa.beginPacket();
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// Header:
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LoRa.write('<');
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LoRa.write(0xFF);
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LoRa.write(0x01);
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// APRS Data:
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LoRa.write((const uint8_t *)data.c_str(), data.length());
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LoRa.endPacket();
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powerManagement.activateMeasurement();
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#ifdef SB_ACTIVE
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lastTxLat = gps.location.lat();
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lastTxLng = gps.location.lng();
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previousHeading = currentHeading;
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lastTxdistance = 0;
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lastTxTime = millis();
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#endif
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}
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if(gps_time_update)
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{
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#ifdef TTGO_T_Beam_V1_0
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String batteryVoltage(powerManagement.getBatteryVoltage(), 2);
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String batteryChargeCurrent(powerManagement.getBatteryChargeDischargeCurrent(), 0);
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#endif
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show_display(CALL,
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createDateString(now()) + " " + createTimeString(now()),
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String("Sats: ") + gps.satellites.value() + " HDOP: " + gps.hdop.hdop(),
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String("Nxt Bcn: ") + createTimeString(nextBeaconTimeStamp)
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#ifdef TTGO_T_Beam_V1_0
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, String("Bat: ") + batteryVoltage + "V " + batteryChargeCurrent + "mA"
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#endif
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);
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#ifdef SB_ACTIVE
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// Change the Tx internal based on the current speed
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if ( gps.speed.kmph() < 5 )
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{
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txInterval = 300000; // Change Tx internal to 5 mins
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}
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else if ( gps.speed.kmph() < SB_SLOW_SPEED )
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{
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txInterval = SB_SLOW_RATE * 1000; // Change Tx interval
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}
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else if ( gps.speed.kmph() > SB_FAST_SPEED)
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{
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txInterval = SB_FAST_RATE * 1000; // Change Tx interval
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}
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else
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{
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// Interval inbetween low and high speed
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txInterval = (SB_FAST_SPEED / gps.speed.kmph()) * SB_FAST_RATE * 1000;
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}
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#endif
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}
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#if !defined(DEBUGMODE)
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if(millis() > 5000 && gps.charsProcessed() < 10)
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{
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Serial.println("No GPS detected!");
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}
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#endif
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}
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void setup_lora()
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{
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Serial.println("[INFO] Set SPI pins!");
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SPI.begin(LORA_SCK, LORA_MISO, LORA_MOSI, LORA_CS);
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LoRa.setPins(LORA_CS, LORA_RST, LORA_IRQ);
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Serial.println("[INFO] Set LoRa pins!");
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long freq = FREQ_SET;
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Serial.print("[INFO] frequency: ");
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Serial.println(freq);
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if (!LoRa.begin(freq)) {
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Serial.println("[ERROR] Starting LoRa failed!");
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show_display("ERROR", "Starting LoRa failed!");
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while (1);
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}
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LoRa.setSpreadingFactor(SF_SET);
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LoRa.setSignalBandwidth(BW_SET);
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LoRa.setCodingRate4(CR_SET);
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LoRa.enableCrc();
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LoRa.setTxPower(20);
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Serial.println("[INFO] LoRa init done!");
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show_display("INFO", "LoRa init done!", 2000);
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}
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void setup_gps()
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{
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ss.begin(9600, SERIAL_8N1, GPS_TX, GPS_RX);
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}
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String create_lat_aprs(RawDegrees lat)
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{
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char str[20];
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char n_s = 'N';
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if(lat.negative)
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{
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n_s = 'S';
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}
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sprintf(str, "%02d%05.2f%c", lat.deg, lat.billionths / 1000000000.0 * 60.0, n_s);
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String lat_str(str);
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return lat_str;
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}
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String create_long_aprs(RawDegrees lng)
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{
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char str[20];
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char e_w = 'E';
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if(lng.negative)
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{
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e_w = 'W';
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}
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sprintf(str, "%03d%05.2f%c", lng.deg, lng.billionths / 1000000000.0 * 60.0, e_w);
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String lng_str(str);
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return lng_str;
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}
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String createDateString(time_t t)
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{
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char line[30];
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sprintf(line, "%02d.%02d.%04d", day(t), month(t), year(t));
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return String(line);
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}
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String createTimeString(time_t t)
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{
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if(t == -1)
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{
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return String("00:00:00");
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}
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char line[30];
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sprintf(line, "%02d:%02d:%02d", hour(t), minute(t), second(t));
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return String(line);
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}
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