Fix MEB max 1A issue / Add automatic precharge / Add basic OBD functionality

Software/Software.ino

@@ -13,6 +13,7 @@
 #include "src/communication/contactorcontrol/comm_contactorcontrol.h"
 #include "src/communication/equipmentstopbutton/comm_equipmentstopbutton.h"
 #include "src/communication/nvm/comm_nvm.h"
+#include "src/communication/precharge_control/precharge_control.h"
 #include "src/communication/rs485/comm_rs485.h"
 #include "src/communication/seriallink/comm_seriallink.h"
 #include "src/datalayer/datalayer.h"
@@ -120,6 +121,10 @@ void setup() {
 
   init_contactors();
 
+#ifdef PRECHARGE_CONTROL
+  init_precharge_control();
+#endif  // PRECHARGE_CONTROL
+
   init_rs485();
 
   init_serialDataLink();
@@ -247,6 +252,9 @@ void core_loop(void* task_time_us) {
       previousMillis10ms = millis();
       led_exe();
       handle_contactors();  // Take care of startup precharge/contactor closing
+#ifdef PRECHARGE_CONTROL
+      handle_precharge_control();
+#endif  // PRECHARGE_CONTROL
     }
     END_TIME_MEASUREMENT_MAX(time_10ms, datalayer.system.status.time_10ms_us);
 
@@ -298,6 +306,30 @@ void core_loop(void* task_time_us) {
     if (check_pause_2s.elapsed()) {
       emulator_pause_state_transmit_can_battery();
     }
+    static bms_status_enum previous_state = FAULT;
+    if (previous_state != datalayer.battery.status.bms_status) {
+      switch (datalayer.battery.status.bms_status) {
+        case ACTIVE:
+          logging.printf("BMS state changed to: OK\n");
+          break;
+        case UPDATING:
+          logging.printf("BMS state changed to: UPDATING\n");
+          break;
+        case FAULT:
+          logging.printf("BMS state changed to: FAULT\n");
+          break;
+        case INACTIVE:
+          logging.printf("BMS state changed to: INACTIVE\n");
+          break;
+        case STANDBY:
+          logging.printf("BMS state changed to: STANDBY\n");
+          break;
+        default:
+          logging.printf("BMS state changed to: ??\n");
+          break;
+      }
+      previous_state = datalayer.battery.status.bms_status;
+    }
 
     vTaskDelayUntil(&xLastWakeTime, xFrequency);
   }

Software/USER_SETTINGS.h

@@ -76,6 +76,9 @@
 /* Shunt/Contactor settings */
 //#define BMW_SBOX  // SBOX relay control & battery current/voltage measurement
 
+/* Automatic Precharge settings. If you have a battery that expects an external voltage applied before opening contactors (within the battery), configure this section */
+//#define PRECHARGE_CONTROL      //Enable this line to control a modified HIA4V1 (see wiki) by PWM on the PRECHARGE_PIN.
+
 /* Other options */
 //#define LOG_TO_SD              //Enable this line to log diagnostic data to SD card
 //#define DEBUG_VIA_USB          //Enable this line to have the USB port output serial diagnostic data while program runs (WARNING, raises CPU load, do not use for production)

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

@@ -525,6 +525,8 @@ void handle_incoming_can_frame_battery(CAN_frame rx_frame) {
       battery_request_open_contactors_fast = (rx_frame.data.u8[6] & 0x0C) >> 2;
       battery_charging_condition_delta = (rx_frame.data.u8[6] & 0xF0) >> 4;
       battery_DC_link_voltage = rx_frame.data.u8[7];
+      if (datalayer.battery.status.bms_status == INACTIVE)
+        datalayer.battery.status.bms_status = ACTIVE;
       break;
     case 0x1FA:  //BMS [1000ms] Status Of High-Voltage Battery - 1
       battery_status_error_isolation_external_Bordnetz = (rx_frame.data.u8[0] & 0x03);
@@ -711,6 +713,8 @@ void handle_incoming_can_frame_battery2(CAN_frame rx_frame) {
       battery2_request_open_contactors_fast = (rx_frame.data.u8[6] & 0x0C) >> 2;
       battery2_charging_condition_delta = (rx_frame.data.u8[6] & 0xF0) >> 4;
       battery2_DC_link_voltage = rx_frame.data.u8[7];
+      if (datalayer.battery2.status.bms_status == INACTIVE)
+        datalayer.battery2.status.bms_status = ACTIVE;
       break;
     case 0x1FA:  //BMS [1000ms] Status Of High-Voltage Battery - 1
       battery2_status_error_isolation_external_Bordnetz = (rx_frame.data.u8[0] & 0x03);

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

@@ -614,6 +614,8 @@ void handle_incoming_can_frame_battery(CAN_frame rx_frame) {
         min_soc_state = (rx_frame.data.u8[8] << 8 | rx_frame.data.u8[9]);
         avg_soc_state = (rx_frame.data.u8[6] << 8 | rx_frame.data.u8[7]);
         max_soc_state = (rx_frame.data.u8[10] << 8 | rx_frame.data.u8[11]);
+        if (datalayer.battery.status.bms_status == INACTIVE)
+          datalayer.battery.status.bms_status = ACTIVE;
       }
 
       if (rx_frame.DLC =

Software/src/battery/BYD-ATTO-3-BATTERY.cpp

@@ -252,6 +252,8 @@ void handle_incoming_can_frame_battery(CAN_frame rx_frame) {
       battery_highprecision_SOC = ((rx_frame.data.u8[5] & 0x0F) << 8) | rx_frame.data.u8[4];  // 03 E0 = 992 = 99.2%
       battery_lowest_temperature = (rx_frame.data.u8[1] - 40);                                //Best guess for now
       battery_highest_temperature = (rx_frame.data.u8[3] - 40);                               //Best guess for now
+      if (datalayer.battery.status.bms_status == INACTIVE)
+        datalayer.battery.status.bms_status = ACTIVE;
       break;
     case 0x47B:  //01,FF,FF,FF,FF,FF,FF,FF - Static, values never changes between logs
       break;
@@ -564,6 +566,8 @@ void handle_incoming_can_frame_battery2(CAN_frame rx_frame) {
       battery2_highprecision_SOC = ((rx_frame.data.u8[5] & 0x0F) << 8) | rx_frame.data.u8[4];  // 03 E0 = 992 = 99.2%
       battery2_lowest_temperature = (rx_frame.data.u8[1] - 40);                                //Best guess for now
       battery2_highest_temperature = (rx_frame.data.u8[3] - 40);                               //Best guess for now
+      if (datalayer.battery2.status.bms_status == INACTIVE)
+        datalayer.battery2.status.bms_status = ACTIVE;
       break;
     case 0x47B:  //01,FF,FF,FF,FF,FF,FF,FF - Static, values never changes between logs
       break;

Software/src/battery/CELLPOWER-BMS.cpp

@@ -245,6 +245,8 @@ void handle_incoming_can_frame_battery(CAN_frame rx_frame) {
       battery_SOH_percentage = (uint8_t)rx_frame.data.u8[4];
       battery_SOC_percentage = (uint8_t)rx_frame.data.u8[5];
       battery_remaining_dAh = (uint16_t)((rx_frame.data.u8[7] << 8) | rx_frame.data.u8[6]);
+      if (datalayer.battery.status.bms_status == INACTIVE)
+        datalayer.battery.status.bms_status = ACTIVE;
       break;
     case 0x3A4:  //PDO3_TX - 200ms
       datalayer.battery.status.CAN_battery_still_alive = CAN_STILL_ALIVE;

Software/src/battery/CHADEMO-BATTERY.cpp

@@ -396,6 +396,8 @@ void handle_incoming_can_frame_battery(CAN_frame rx_frame) {
 
   datalayer.battery.status.CAN_battery_still_alive =
       CAN_STILL_ALIVE;  //We are getting CAN messages from the vehicle, inform the watchdog
+  if (datalayer.battery.status.bms_status == INACTIVE)
+    datalayer.battery.status.bms_status = ACTIVE;
 
   switch (rx_frame.ID) {
     case 0x100:

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

@@ -153,6 +153,8 @@ void handle_incoming_can_frame_battery(CAN_frame rx_frame) {
       BMU_Current = ((((((rx_frame.data.u8[2] * 256.0) + rx_frame.data.u8[3])) - 32768)) * 0.01);
       BMU_PackVoltage = ((rx_frame.data.u8[4] * 256.0 + rx_frame.data.u8[5]) * 0.1);
       BMU_Power = (BMU_Current * BMU_PackVoltage);
+      if (datalayer.battery.status.bms_status == INACTIVE)
+        datalayer.battery.status.bms_status = ACTIVE;
       break;
     case 0x6e1:  //BMU message, 25ms - Battery temperatures and voltages
     case 0x6e2:

Software/src/battery/JAGUAR-IPACE-BATTERY.cpp

@@ -134,6 +134,8 @@ void handle_incoming_can_frame_battery(CAN_frame rx_frame) {
       HVBatteryContactorStatus = ((rx_frame.data.u8[0] & 0x80) >> 7);
       HVBattHVILError = ((rx_frame.data.u8[0] & 0x40) >> 6);
       HVILBattIsolationError = ((rx_frame.data.u8[0] & 0x20) >> 5);
+      if (datalayer.battery.status.bms_status == INACTIVE)
+        datalayer.battery.status.bms_status = ACTIVE;
       break;
     case 0x100:
       datalayer.battery.status.CAN_battery_still_alive = CAN_STILL_ALIVE;

Software/src/battery/KIA-E-GMP-BATTERY.cpp

@@ -820,6 +820,8 @@ void handle_incoming_can_frame_battery(CAN_frame rx_frame) {
             allowedDischargePower = ((rx_frame.data.u8[5] << 8) + rx_frame.data.u8[6]);
             SOC_BMS = rx_frame.data.u8[2] * 5;  //100% = 200 ( 200 * 5 = 1000 )
 
+            if (datalayer.battery.status.bms_status == INACTIVE)
+              datalayer.battery.status.bms_status = ACTIVE;
           } else if (poll_data_pid == 2) {
             // set cell voltages data, start bite, data length from start, start cell
             set_cell_voltages(rx_frame, 2, 6, 0);

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

@@ -240,6 +240,8 @@ void handle_incoming_can_frame_battery(CAN_frame rx_frame) {
       startedUp = true;
       datalayer.battery.status.CAN_battery_still_alive = CAN_STILL_ALIVE;
       SOC_Display = rx_frame.data.u8[0] * 5;  //100% = 200 ( 200 * 5 = 1000 )
+      if (datalayer.battery.status.bms_status == INACTIVE)
+        datalayer.battery.status.bms_status = ACTIVE;
       break;
     case 0x594:
       startedUp = true;

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

@@ -117,6 +117,8 @@ void handle_incoming_can_frame_battery(CAN_frame rx_frame) {
             available_charge_power = ((rx_frame.data.u8[2] << 8) | rx_frame.data.u8[3]);
             available_discharge_power = ((rx_frame.data.u8[4] << 8) | rx_frame.data.u8[5]);
             battery_current_high_byte = rx_frame.data.u8[7];
+            if (datalayer.battery.status.bms_status == INACTIVE)
+              datalayer.battery.status.bms_status = ACTIVE;
           } else if (poll_data_pid == 2) {  //21 02
             cellvoltages_mv[0] = (rx_frame.data.u8[2] * 20);
             cellvoltages_mv[1] = (rx_frame.data.u8[3] * 20);