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Add more info from LEAF CAN messages

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Daniel Öster 2023-03-01 12:31:21 -08:00 • committed by GitHub
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1 changed files with 39 additions and 7 deletions
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46
Software/BYD-MODBUS-2-LEAF-CAN.ino
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@ -21,20 +21,35 @@ byte mprun10 = 0; //counter 0-3
byte mprun100 = 0; //counter 0-3
CAN_frame_t LEAF_1F2 = {.MsgID = 0x1F2, LEAF_1F2.FIR.B.DLC = 8, LEAF_1F2.FIR.B.FF = CAN_frame_std, LEAF_1F2.data.u8[0] = 0x64, LEAF_1F2.data.u8[1] = 0x64,LEAF_1F2.data.u8[2] = 0x32, LEAF_1F2.data.u8[3] = 0xA0,LEAF_1F2.data.u8[4] = 0x00,LEAF_1F2.data.u8[5] = 0x0A};
CAN_frame_t LEAF_50B = {.MsgID = 0x50B, LEAF_50B.FIR.B.DLC = 8, LEAF_50B.FIR.B.FF = CAN_frame_std, LEAF_50B.data.u8[0] = 0x00, LEAF_50B.data.u8[1] = 0x00,LEAF_50B.data.u8[2] = 0x06, LEAF_50B.data.u8[3] = 0xC0,LEAF_50B.data.u8[4] = 0x00,LEAF_50B.data.u8[5] = 0x00};
CAN_frame_t LEAF_50B = {.MsgID = 0x50B, LEAF_50B.FIR.B.DLC = 7, LEAF_50B.FIR.B.FF = CAN_frame_std, LEAF_50B.data.u8[0] = 0x00, LEAF_50B.data.u8[1] = 0x00,LEAF_50B.data.u8[2] = 0x06, LEAF_50B.data.u8[3] = 0xC0,LEAF_50B.data.u8[4] = 0x00,LEAF_50B.data.u8[5] = 0x00};
CAN_frame_t LEAF_50C = {.MsgID = 0x50C, LEAF_50C.FIR.B.DLC = 8, LEAF_50C.FIR.B.FF = CAN_frame_std, LEAF_50C.data.u8[0] = 0x00, LEAF_50C.data.u8[1] = 0x00,LEAF_50C.data.u8[2] = 0x00, LEAF_50C.data.u8[3] = 0x00,LEAF_50C.data.u8[4] = 0x00,LEAF_50C.data.u8[5] = 0x00};
//Nissan LEAF battery parameters from CAN
#define WH_PER_GID 77 //One GID is this amount of Watt hours
uint16_t LB_Discharge_Power_Limit = 0; //Limit in kW
uint16_t LB_MAX_POWER_FOR_CHARGER = 0; //Limit in kW
uint16_t LB_SOC = 0; //0 - 100.0 % (0-1000)
uint16_t LB_SOC = 500; //0 - 100.0 % (0-1000)
uint16_t LB_Wh_Remaining = 0; //Amount of energy in battery, in Wh
uint16_t LB_GIDS = 0;
uint16_t LB_MAX = 0;
uint16_t LB_Max_GIDS = 273; //Startup in 24kWh mode
int16_t LB_Current = 0; //Current in A going in/out of battery
uint16_t LB_Total_Voltage = 370; //Battery voltage (0-450V)
int16_t LB_Current = 0; //Current in A going in/out of battery
uint8_t LB_HistData_Temperature_MAX = 0; //-40 to 86*C
uint8_t LB_HistData_Temperature_MIN = 0; //-40 to 86*C
uint8_t LB_Relay_Cut_Request = 0; //LB_FAIL
uint8_t LB_Failsafe_Status = 0; //LB_STATUS = 000b = normal start Request
//001b = Main Relay OFF Request
//010b = Charging Mode Stop Request
//011b = Main Relay OFF Request
//100b = Caution Lamp Request
//101b = Caution Lamp Request & Main Relay OFF Request
//110b = Caution Lamp Request & Charging Mode Stop Request
//111b = Caution Lamp Request & Main Relay OFF Request
byte LB_Interlock = 0; //Contains info on if HV leads are seated
byte LB_Full_CHARGE_flag = 0; //LB_FCHGEND , Goes to 1 if battery is fully charged
byte LB_MainRelayOn_flag = 0; //No-Permission=0, Main Relay On Permission=1
byte LB_Capacity_Empty = 0; //LB_EMPTY, , Goes to 1 if battery is empty
// global Modbus memory registers
const int intervalModbusTask = 4800; //Interval at which to refresh modbus registers
@ -46,8 +61,8 @@ uint16_t mbPV[MB_RTU_NUM_VALUES]; // process variable memory: produced
uint16_t capacity_Wh_startup = BATTERY_WH_MAX;
uint16_t MaxPower = 40960; //41kW TODO, fetch from LEAF battery (or does it matter, polled after startup?)
uint16_t MaxVoltage = 4672; //(467.2V), if higher charging is not possible (goes into forced discharge)
uint16_t MinVoltage = 3200; //Min Voltage (320.0V), if lower Gen24 disables battery
uint16_t MaxVoltage = 4040; //(404.4V), if higher charging is not possible (goes into forced discharge)
uint16_t MinVoltage = 3100; //Min Voltage (310.0V), if lower Gen24 disables battery
uint16_t SOC = 5000; //SOC 0-100.00% //Updates later on from CAN
uint16_t capacity_Wh = BATTERY_WH_MAX; //Updates later on from CAN
@ -257,6 +272,13 @@ void handle_can()
LB_Current |= 0xf800;
}
LB_Total_Voltage = ((rx_frame.data.u8[2] << 2) | (rx_frame.data.u8[3] & 0xc0) >> 6) / 2;
//Collect various data from the BMS
LB_Relay_Cut_Request = ((rx_frame.data.u8[1] & 0x18) >> 3);
LB_Failsafe_Status = (rx_frame.data.u8[1] & 0x07);
LB_MainRelayOn_flag = (byte) ((rx_frame.data.u8[3] & 0x20) >> 5);
LB_Full_CHARGE_flag = (byte) ((rx_frame.data.u8[3] & 0x10) >> 4);
LB_Interlock = (byte) ((rx_frame.data.u8[3] & 0x08) >> 3);
break;
case 0x1DC:
LB_Discharge_Power_Limit = ((rx_frame.data.u8[0] << 2 | rx_frame.data.u8[1] >> 6) / 4.0);
@ -280,6 +302,16 @@ void handle_can()
LB_Wh_Remaining = (LB_GIDS * WH_PER_GID);
}
break;
case 0x5C0:
if ((rx_frame.data.u8[0]>>6) == 1)
{ // Battery Temperature. Effectively has only 7-bit precision, as the bottom bit is always 0.
LB_HistData_Temperature_MAX = ((rx_frame.data.u8[2] / 2) - 40);
}
if ((rx_frame.data.u8[0]>>6) == 3)
{ // Battery Temperature. Effectively has only 7-bit precision, as the bottom bit is always 0.
LB_HistData_Temperature_MIN = ((rx_frame.data.u8[2] / 2) - 40);
}
break;
default:
break;
}
@ -294,7 +326,7 @@ void handle_can()
{
previousMillis100 = currentMillis;
ESP32Can.CANWriteFrame(&LEAF_50B); //Always send 50B as a static message
ESP32Can.CANWriteFrame(&LEAF_50B); //Always send 50B as a static message (Contains HCM_WakeUpSleepCommand == 11b == WakeUp, and CANMASK = 1)
mprun100++;
if (mprun100 > 3)
@ -353,7 +385,7 @@ void handle_can()
LEAF_1F2.data.u8[6] = 0x03;
LEAF_1F2.data.u8[7] = 0x82;
}
ESP32Can.CANWriteFrame(&LEAF_1F2);
ESP32Can.CANWriteFrame(&LEAF_1F2); //Contains (CHG_STA_RQ == 1 == Normal Charge)
mprun10++;
if (mprun10 > 3)