Event handling! Unit tests!

.github/workflows/unit-tests.yml

@@ -0,0 +1,30 @@
+name: Run Unit Tests
+
+
+on: [push, pull_request]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Checkout code
+      uses: actions/checkout@v4
+
+    - name: Configure and build with CMake
+      run: |
+        mkdir build
+        cd build
+        cmake ..
+        cmake --build .
+
+    - name: Run unit tests
+      run: |
+        set -e  # Exit immediately on non-zero exit code
+        cd build/test
+        dir -s
+        for test_executable in *; do
+          if [ -f "$test_executable" ] && [ -x "$test_executable" ]; then
+            ./"$test_executable"
+          fi
+        done

.gitignore

@@ -1,5 +1,8 @@
 # Ignore any .vscode folder
 *.vscode/
 
-# Ignore any files in the build folder
-Software/build/
+# Ignore any files in any build folder
+*build/
+
+# Ignore .exe (unit tests)
+*.exe

CMakeLists.txt

@@ -0,0 +1,10 @@
+cmake_minimum_required(VERSION 3.10)
+
+# Set the C++ standard to C++20
+set(CMAKE_CXX_STANDARD 20)
+set(CMAKE_CXX_STANDARD_REQUIRED ON)
+
+project(BatteryEmulator)
+
+# add_subdirectory(Software/src/devboard/utils)
+add_subdirectory(test)

Software/Software.ino

@@ -187,7 +187,7 @@ void loop() {
     previousMillisUpdateVal = millis();
     update_values();  // Update values heading towards inverter. Prepare for sending on CAN, or write directly to Modbus.
     if (DUMMY_EVENT_ENABLED) {
-      set_event(EVENT_DUMMY, (uint8_t)millis());
+      set_event(EVENT_DUMMY_ERROR, (uint8_t)millis());
     }
   }
 
@@ -196,7 +196,7 @@ void loop() {
 #ifdef DUAL_CAN
   send_can2();
 #endif
-  update_event_timestamps();
+  run_event_handling();
 }
 
 // Initialization functions
@@ -557,30 +557,30 @@ void handle_LED_state() {
   } else if (!rampUp && brightness == 0) {
     rampUp = true;
   }
-  switch (LEDcolor) {
-    case GREEN:
-      pixels.setPixelColor(0, pixels.Color(0, brightness, 0));  // Green pulsing LED
+  switch (get_event_level()) {
+    case EVENT_LEVEL_INFO:
+      LEDcolor = GREEN;
+      pixels.setPixelColor(0, pixels.Color(0, brightness, 0));  // Red LED full brightness
       break;
-    case YELLOW:
+    case EVENT_LEVEL_WARNING:
+      LEDcolor = YELLOW;
       pixels.setPixelColor(0, pixels.Color(brightness, brightness, 0));  // Yellow pulsing LED
       break;
-    case BLUE:
+    case EVENT_LEVEL_DEBUG:
+    case EVENT_LEVEL_UPDATE:
+      LEDcolor = BLUE;
       pixels.setPixelColor(0, pixels.Color(0, 0, brightness));  // Blue pulsing LED
       break;
-    case RED:
+    case EVENT_LEVEL_ERROR:
+      LEDcolor = RED;
       pixels.setPixelColor(0, pixels.Color(150, 0, 0));  // Red LED full brightness
       break;
-    case TEST_ALL_COLORS:
-      pixels.setPixelColor(0, pixels.Color(brightness, abs((100 - brightness)), abs((50 - brightness))));  // RGB
-      break;
     default:
       break;
   }
 
-  // BMS in fault state overrides everything
-  if (bms_status == FAULT) {
-    LEDcolor = RED;
-    pixels.setPixelColor(0, pixels.Color(255, 0, 0));  // Red LED full brightness
+  if (LEDcolor == TEST_ALL_COLORS) {
+    pixels.setPixelColor(0, pixels.Color(0, brightness, 0));  // Green pulsing LED
   }
 
   pixels.show();  // This sends the updated pixel color to the hardware.

Software/USER_SETTINGS.h

@@ -12,16 +12,16 @@
 //#define CHADEMO_BATTERY
 //#define IMIEV_CZERO_ION_BATTERY
 //#define KIA_HYUNDAI_64_BATTERY
-//#define NISSAN_LEAF_BATTERY
+// #define NISSAN_LEAF_BATTERY
 //#define RENAULT_KANGOO_BATTERY
 //#define RENAULT_ZOE_BATTERY
 //#define SANTA_FE_PHEV_BATTERY
 //#define TESLA_MODEL_3_BATTERY
-//#define TEST_FAKE_BATTERY
+#define TEST_FAKE_BATTERY
 
 /* Select inverter communication protocol. See Wiki for which to use with your inverter: https://github.com/dalathegreat/BYD-Battery-Emulator-For-Gen24/wiki */
 //#define BYD_CAN          //Enable this line to emulate a "BYD Battery-Box Premium HVS" over CAN Bus
-//#define BYD_MODBUS  //Enable this line to emulate a "BYD 11kWh HVM battery" over Modbus RTU
+// #define BYD_MODBUS  //Enable this line to emulate a "BYD 11kWh HVM battery" over Modbus RTU
 //#define LUNA2000_MODBUS  //Enable this line to emulate a "Luna2000 battery" over Modbus RTU
 //#define PYLON_CAN        //Enable this line to emulate a "Pylontech battery" over CAN bus
 //#define SMA_CAN          //Enable this line to emulate a "BYD Battery-Box H 8.9kWh, 7 mod" over CAN bus
@@ -37,10 +37,10 @@
 //#define SERIAL_LINK_RECEIVER  //Enable this line to receive battery data over RS485 pins from another Lilygo (This LilyGo interfaces with inverter)
 //#define SERIAL_LINK_TRANSMITTER  //Enable this line to send battery data over RS485 pins to another Lilygo (This LilyGo interfaces with battery)
 #define WEBSERVER  //Enable this line to enable WiFi, and to run the webserver. See USER_SETTINGS.cpp for the Wifi settings.
-#define LOAD_SAVED_SETTINGS_ON_BOOT  //Enable this line to read settings stored via the webserver on boot
+// #define LOAD_SAVED_SETTINGS_ON_BOOT  //Enable this line to read settings stored via the webserver on boot
 
 /* MQTT options */
-//#define MQTT  // Enable this line to enable MQTT
+// #define MQTT  // Enable this line to enable MQTT
 #define MQTT_SUBSCRIPTIONS \
   { "my/topic/abc", "my/other/topic" }
 #define MQTT_SERVER "192.168.xxx.yyy"

Software/src/battery/BMW-I3-BATTERY.cpp

@@ -55,8 +55,6 @@ static uint16_t DC_link = 0;
 static int16_t Battery_Power = 0;
 
 void update_values_i3_battery() {  //This function maps all the values fetched via CAN to the correct parameters used for modbus
-  bms_status = ACTIVE;             //Startout in active mode
-
   //Calculate the SOC% value to send to inverter
   Calculated_SOC = (Display_SOC * 10);  //Increase decimal amount
   Calculated_SOC =
@@ -102,8 +100,6 @@ void update_values_i3_battery() {  //This function maps all the values fetched v
 
   /* Check if the BMS is still sending CAN messages. If we go 60s without messages we raise an error*/
   if (!CANstillAlive) {
-    bms_status = FAULT;
-    Serial.println("No CAN communication detected for 60s. Shutting down battery control.");
     set_event(EVENT_CAN_FAILURE, 0);
   } else {
     CANstillAlive--;

Software/src/battery/BMW-I3-BATTERY.h

@@ -18,7 +18,6 @@ extern uint16_t capacity_Wh;
 extern uint16_t remaining_capacity_Wh;
 extern uint16_t max_target_discharge_power;
 extern uint16_t max_target_charge_power;
-extern uint8_t bms_status;
 extern uint8_t bms_char_dis_status;
 extern uint16_t stat_batt_power;
 extern uint16_t temperature_min;

Software/src/battery/CHADEMO-BATTERY.cpp

@@ -90,7 +90,6 @@ uint8_t HighCurrentControlStatus = 0;
 uint8_t HighVoltageControlStatus = 0;
 
 void update_values_chademo_battery() {  //This function maps all the values fetched via CAN to the correct parameters used for the inverter
-  bms_status = ACTIVE;  //Startout in active mode
 
   SOC = ChargingRate;
 
@@ -105,9 +104,7 @@ void update_values_chademo_battery() {  //This function maps all the values fetc
 
   /* Check if the Vehicle is still sending CAN messages. If we go 60s without messages we raise an error*/
   if (!CANstillAlive) {
-    bms_status = FAULT;
     errorCode = 7;
-    Serial.println("No CAN communication detected for 60s. Shutting down battery control.");
     set_event(EVENT_CAN_FAILURE, 0);
   } else {
     CANstillAlive--;

Software/src/battery/IMIEV-CZERO-ION-BATTERY.cpp

@@ -41,8 +41,6 @@ static double max_temp_cel = 20.00;
 static double min_temp_cel = 19.00;
 
 void update_values_imiev_battery() {  //This function maps all the values fetched via CAN to the correct parameters used for modbus
-  bms_status = ACTIVE;                //Startout in active mode
-
   SOC = (uint16_t)(BMU_SOC * 100);  //increase BMU_SOC range from 0-100 -> 100.00
 
   battery_voltage = (uint16_t)(BMU_PackVoltage * 10);  // Multiply by 10 and cast to uint16_t
@@ -108,8 +106,6 @@ void update_values_imiev_battery() {  //This function maps all the values fetche
 
   /* Check if the BMS is still sending CAN messages. If we go 60s without messages we raise an error*/
   if (!CANstillAlive) {
-    bms_status = FAULT;
-    Serial.println("No CAN communication detected for 60s. Shutting down battery control.");
     set_event(EVENT_CAN_FAILURE, 0);
   } else {
     CANstillAlive--;

Software/src/battery/IMIEV-CZERO-ION-BATTERY.h

@@ -18,7 +18,6 @@ extern uint16_t capacity_Wh;
 extern uint16_t remaining_capacity_Wh;
 extern uint16_t max_target_discharge_power;
 extern uint16_t max_target_charge_power;
-extern uint8_t bms_status;
 extern uint8_t bms_char_dis_status;
 extern uint16_t stat_batt_power;
 extern uint16_t temperature_min;
@@ -28,7 +27,6 @@ extern uint16_t cell_max_voltage;
 extern uint16_t cell_min_voltage;
 extern bool batteryAllowsContactorClosing;   //Bool, 1=true, 0=false
 extern bool inverterAllowsContactorClosing;  //Bool, 1=true, 0=false
-extern uint8_t LEDcolor;
 
 void update_values_imiev_battery();
 void receive_can_imiev_battery(CAN_frame_t rx_frame);

Software/src/battery/KIA-HYUNDAI-64-BATTERY.cpp

@@ -195,45 +195,31 @@ void update_values_kiaHyundai_64_battery() {  //This function maps all the value
 
   cell_min_voltage = CellVoltMin_mV;
 
-  bms_status = ACTIVE;  //Startout in active mode. Then check safeties
-
   /* Check if the BMS is still sending CAN messages. If we go 60s without messages we raise an error*/
   if (!CANstillAlive) {
-    bms_status = FAULT;
-    Serial.println("No CAN communication detected for 60s. Shutting down battery control.");
     set_event(EVENT_CAN_FAILURE, 0);
   } else {
     CANstillAlive--;
   }
 
   if (waterleakageSensor == 0) {
-    Serial.println("Water leakage inside battery detected. Operation halted. Inspect battery!");
-    bms_status = FAULT;
     set_event(EVENT_WATER_INGRESS, 0);
   }
 
   if (leadAcidBatteryVoltage < 110) {
-    Serial.println("12V battery source below required voltage to safely close contactors. Inspect the supply/battery!");
-    LEDcolor = YELLOW;
     set_event(EVENT_12V_LOW, leadAcidBatteryVoltage);
   }
 
   // Check if cell voltages are within allowed range
   cell_deviation_mV = (cell_max_voltage - cell_min_voltage);
 
   if (cell_max_voltage >= MAX_CELL_VOLTAGE) {
-    bms_status = FAULT;
-    Serial.println("ERROR: CELL OVERVOLTAGE!!! Stopping battery charging and discharging. Inspect battery!");
     set_event(EVENT_CELL_OVER_VOLTAGE, 0);
   }
   if (cell_min_voltage <= MIN_CELL_VOLTAGE) {
-    bms_status = FAULT;
-    Serial.println("ERROR: CELL UNDERVOLTAGE!!! Stopping battery charging and discharging. Inspect battery!");
     set_event(EVENT_CELL_UNDER_VOLTAGE, 0);
   }
   if (cell_deviation_mV > MAX_CELL_DEVIATION) {
-    LEDcolor = YELLOW;
-    Serial.println("ERROR: HIGH CELL DEVIATION!!! Inspect battery!");
     set_event(EVENT_CELL_DEVIATION_HIGH, 0);
   }
 

Software/src/battery/KIA-HYUNDAI-64-BATTERY.h

@@ -20,7 +20,6 @@ extern uint16_t capacity_Wh;                 //Wh,   0-60000
 extern uint16_t remaining_capacity_Wh;       //Wh,   0-60000
 extern uint16_t max_target_discharge_power;  //W,    0-60000
 extern uint16_t max_target_charge_power;     //W,    0-60000
-extern uint8_t bms_status;                   //Enum, 0-5
 extern uint8_t bms_char_dis_status;          //Enum, 0-2
 extern uint16_t stat_batt_power;             //W,    Goes thru convert2unsignedint16 function (5W = 5, -5W = 65530)
 extern uint16_t temperature_min;    //C+1,  Goes thru convert2unsignedint16 function (15.0C = 150, -15.0C =  65385)
@@ -29,7 +28,6 @@ extern uint16_t cell_max_voltage;   //mV,   0-4350
 extern uint16_t cell_min_voltage;   //mV,   0-4350
 extern uint16_t cellvoltages[120];  //mV    0-4350 per cell
 extern uint8_t nof_cellvoltages;    // Total number of cell voltages, set by each battery.
-extern uint8_t LEDcolor;            //Enum, 0-10
 extern bool batteryAllowsContactorClosing;   //Bool, 1=true, 0=false
 extern bool inverterAllowsContactorClosing;  //Bool, 1=true, 0=false