Added first Code for GPS-Module Support

Software/ChainLube/platformio.ini

@@ -48,4 +48,6 @@ lib_deps =
     sstaub/Ticker @ ^4.2.0
     s00500/ESPUI @ ^2.0.0
     coryjfowler/mcp_can @ ^1.5.0
-    robtillaart/I2C_EEPROM @ ^1.5.2
+    robtillaart/I2C_EEPROM @ ^1.5.2
+    plerup/EspSoftwareSerial @ ^6.15.2
+    mikalhart/TinyGPSPlus @ ^1.0.3

Software/ChainLube/src/dtc.cpp

@@ -0,0 +1,76 @@
+#include "dtc.h"
+
+DTCEntry_s DTCStorage[MAX_DTC_STORAGE];
+
+void MaintainDTC(uint32_t DTC_no, boolean active)
+{
+    for (int i = 0; i < MAX_DTC_STORAGE; i++)
+    {
+        if (DTCStorage[i].Number == DTC_no)
+        {
+            if (active == true)
+            {
+                DTCStorage[i].timestamp = millis();
+                DTCStorage[i].active = DTC_ACTIVE;
+                return;
+            }
+            else
+            {
+                DTCStorage[i].active = DTCStorage[i].active == DTC_ACTIVE ? DTC_PREVIOUS : DTC_NONE;
+                return;
+            }
+        }
+    }
+
+    // DTC was not found with upper iteration, but is active
+    // so we need to look for free space to store DTC
+    if (active == true)
+    {
+        for (int i = 0; i < MAX_DTC_STORAGE; i++)
+        {
+            if (DTCStorage[i].Number == 0)
+            {
+                DTCStorage[i].timestamp = millis();
+                DTCStorage[i].active = DTC_ACTIVE;
+                return;
+            }
+        }
+    }
+}
+
+void ClearDTC(uint32_t DTC_no)
+{
+    for (int i = 0; i < MAX_DTC_STORAGE; i++)
+    {
+        if (DTCStorage[i].Number == DTC_no)
+        {
+            DTCStorage[i].Number = 0;
+        }
+    }
+}
+
+void ClearAllDTC()
+{
+    for (int i = 0; i < MAX_DTC_STORAGE; i++)
+        DTCStorage[i].Number = 0;
+}
+
+uint32_t getlastDTC(boolean only_active)
+{
+    uint8_t pointer = 0;
+    uint32_t lasttimestamp = 0;
+
+    for (int i = 0; i < MAX_DTC_STORAGE; i++)
+    {
+        if (DTCStorage[i].Number > 0 && DTCStorage[i].timestamp > lasttimestamp)
+        {
+            if (only_active == false || DTCStorage[i].active == DTC_ACTIVE)
+            {
+                pointer = i;
+                lasttimestamp = DTCStorage[i].timestamp;
+            }
+        }
+    }
+
+    return pointer > 0 ? DTCStorage[pointer].Number : 0;
+}

Software/ChainLube/src/dtc.h

@@ -0,0 +1,29 @@
+#ifndef _DTC_H_
+#define _DTC_H_
+
+#include <Arduino.h>
+
+#define MAX_DTC_STORAGE 16
+
+#define DTC_NO_GPS_SERIAL 100
+
+typedef enum DTCActive_e
+{
+DTC_ACTIVE,
+DTC_PREVIOUS,
+DTC_NONE
+} DTCActive_s;
+
+typedef struct DTCEntry_s
+{
+  uint32_t Number;
+  uint32_t timestamp;
+  DTCActive_s active;
+} DTCEntry_t;
+
+void MaintainDTC(uint32_t DTC_no, boolean active);
+void ClearDTC(uint32_t DTC_no);
+void ClearAllDTC();
+uint32_t getlastDTC(boolean only_active);
+
+#endif

Software/ChainLube/src/gps.cpp

@@ -0,0 +1,70 @@
+#include "gps.h"
+
+SoftwareSerial swSerGps;
+TinyGPSPlus gps;
+
+void Init_GPS()
+{
+    uint32_t baudrate;
+    switch (LubeConfig.GPSBaudRate)
+    {
+    case BAUD_9600:
+        baudrate = 9600;
+        break;
+    case BAUD_115200:
+        baudrate = 115200;
+        break;
+    default:
+        baudrate = 4800;
+        break;
+    }
+
+    Serial.printf(PSTR("Init GPS with Baud %d\n"), baudrate);
+
+    swSerGps.begin(baudrate, SWSERIAL_8N1, GPIO_TRIGGER, -1, false, 256);
+    swSerGps.enableRx(true);
+    // high speed half duplex, turn off interrupts during tx
+    swSerGps.enableIntTx(false);
+    swSerGps.enableTx(false);
+
+    // swSerGps.enableTx(true);
+    // swSerGps.write("Test");
+    // swSerGps.enableTx(false);
+}
+
+uint32_t Process_GPS_WheelSpeed()
+{
+    static uint32_t lastRecTimestamp;
+    static uint32_t lastValidSpeedTimestamp;
+    uint16_t RearWheelSpeed_kmh;
+
+    while (swSerGps.available() > 0)
+    {
+        uint8_t incoming = swSerGps.read();
+        if (gps.encode(incoming))
+        {
+            RearWheelSpeed_kmh = gps.speed.isValid() ? gps.speed.kmph() : 0;
+
+            if (RearWheelSpeed_kmh > 0)
+            {
+                uint32_t RWP_millimeter_per_second = ((uint32_t)RearWheelSpeed_kmh * 1000000) / 3600;
+
+                uint32_t timesincelast = millis() - lastValidSpeedTimestamp;
+                lastValidSpeedTimestamp = millis();
+
+                uint32_t milimeters_to_add = (RWP_millimeter_per_second * timesincelast) / 1000;
+
+                return milimeters_to_add;
+            }
+            lastRecTimestamp = millis();
+        }
+    }
+
+    if (millis() > lastRecTimestamp + 10000)
+    {
+        globals.systemStatus = sysStat_Error;
+        MaintainDTC(DTC_NO_GPS_SERIAL, true);
+    }
+
+    return 0;
+}

Software/ChainLube/src/gps.h

@@ -0,0 +1,13 @@
+#ifndef _GPS_H_
+#define _GPS_H_
+
+#include <SoftwareSerial.h>
+#include <TinyGPSPlus.h>
+#include "config.h"
+#include "common.h"
+#include "dtc.h"
+
+void Init_GPS();
+uint32_t Process_GPS_WheelSpeed();
+
+#endif

Software/ChainLube/src/main.cpp

@@ -15,6 +15,8 @@
 #include "config.h"
 #include "globals.h"
 #include "can.h"
+#include "gps.h"
+#include "dtc.h"
 
 #ifdef REMOTE_DEBUG
 #include <RemoteDebug.h>
@@ -114,7 +116,7 @@ void setup()
     attachInterrupt(digitalPinToInterrupt(GPIO_TRIGGER), trigger_ISR, FALLING);
     break;
   case SOURCE_GPS:
-
+    Init_GPS();
     break;
 
   case SOURCE_TIME:
@@ -206,6 +208,7 @@ void loop()
   case SOURCE_TIME:
     break;
   case SOURCE_GPS:
+    wheelDistance = Process_GPS_WheelSpeed();
     break;
   }
 
@@ -561,17 +564,33 @@ void LED_Process(uint8_t override, CRGB SetColor)
 
 void Display_Process()
 {
+  static tSystem_Status oldSysStatus = sysStat_Startup;
+
+  if (oldSysStatus != globals.systemStatus)
+  {
+    u8x8.clearDisplay();
+    u8x8.drawString(0, 0, "KTM ChainLube V1");
+    oldSysStatus = globals.systemStatus;
+  }
+
   u8x8.setCursor(0, 1);
   uint32_t DistRemain = globals.systemStatus == sysStat_Normal ? LubeConfig.DistancePerLube_Default : LubeConfig.DistancePerLube_Rain;
   DistRemain -= TravelDistance_highRes / 1000;
-  u8x8.printf("Mode: %10s\n", globals.systemStatustxt);
-  u8x8.printf("next Lube: %4dm\n", DistRemain);
-  u8x8.printf("Tank: %8dml\n", PersistenceData.tankRemain_µl / 1000);
-  u8x8.printf("WiFi: %10s\n", (WiFi.getMode() == WIFI_AP ? "AP" : WiFi.getMode() == WIFI_OFF ? "OFF"
-                                                              : WiFi.getMode() == WIFI_STA   ? "CLIENT"
-                                                                                             : "UNKNOWN"));
-  u8x8.printf("Source: %8s\n", SpeedSourceString[LubeConfig.SpeedSource]);
-  u8x8.printf("EE_PDS: %6d s\n", EEPROMCyclicPDSTicker.remaining() / 1000);
+  u8x8.printf(PSTR("Mode: %10s\n"), globals.systemStatustxt);
+  if (globals.systemStatus == sysStat_Error)
+  {
+    u8x8.printf(PSTR("last DTC: %6d\n"), getlastDTC(false));
+  }
+  else
+  {
+    u8x8.printf(PSTR("next Lube: %4dm\n"), DistRemain);
+    u8x8.printf(PSTR("Tank: %8dml\n"), PersistenceData.tankRemain_µl / 1000);
+    u8x8.printf(PSTR("WiFi: %10s\n"), (WiFi.getMode() == WIFI_AP ? "AP" : WiFi.getMode() == WIFI_OFF ? "OFF"
+                                                                : WiFi.getMode() == WIFI_STA   ? "CLIENT"
+                                                                                               : "UNKNOWN"));
+    u8x8.printf(PSTR("Source: %8s\n"), SpeedSourceString[LubeConfig.SpeedSource]);
+    u8x8.printf("%s\n", WiFi.localIP().toString().c_str());
+  }
   u8x8.refreshDisplay();
 }