mirror of
https://github.com/dalathegreat/Battery-Emulator.git
synced 2025-10-03 09:49:32 +02:00
156 lines
6.6 KiB
C++
156 lines
6.6 KiB
C++
#include "BYD-CAN.h"
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#include "ESP32CAN.h"
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#include "CAN_config.h"
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/* Do not change code below unless you are sure what you are doing */
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static unsigned long previousMillis2s = 0; // will store last time a 2s CAN Message was send
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static unsigned long previousMillis10s = 0; // will store last time a 10s CAN Message was send
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static unsigned long previousMillis60s = 0; // will store last time a 60s CAN Message was send
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static const int interval2s = 2000; // interval (ms) at which send CAN Messages
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static const int interval10s = 10000; // interval (ms) at which send CAN Messages
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static const int interval60s = 60000; // interval (ms) at which send CAN Messages
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//Constant startup messages
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const CAN_frame_t BYD_250 = {.FIR = {.B = {.DLC = 8,.FF = CAN_frame_std,}},.MsgID = 0x250,.data = {0x03, 0x16, 0x00, 0x66, 0x00, 0x33, 0x02, 0x09}};
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const CAN_frame_t BYD_290 = {.FIR = {.B = {.DLC = 8,.FF = CAN_frame_std,}},.MsgID = 0x290,.data = {0x06, 0x37, 0x10, 0xD9, 0x00, 0x00, 0x00, 0x00}};
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const CAN_frame_t BYD_2D0 = {.FIR = {.B = {.DLC = 8,.FF = CAN_frame_std,}},.MsgID = 0x2D0,.data = {0x00, 0x42, 0x59, 0x44, 0x00, 0x00, 0x00, 0x00}}; //BYD
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const CAN_frame_t BYD_3D0_0 = {.FIR = {.B = {.DLC = 8,.FF = CAN_frame_std,}},.MsgID = 0x3D0,.data = {0x00, 0x42, 0x61, 0x74, 0x74, 0x65, 0x72, 0x79}}; //Battery
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const CAN_frame_t BYD_3D0_1 = {.FIR = {.B = {.DLC = 8,.FF = CAN_frame_std,}},.MsgID = 0x3D0,.data = {0x01, 0x2D, 0x42, 0x6F, 0x78, 0x20, 0x50, 0x72}}; //-Box Pr
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const CAN_frame_t BYD_3D0_2 = {.FIR = {.B = {.DLC = 8,.FF = CAN_frame_std,}},.MsgID = 0x3D0,.data = {0x02, 0x65, 0x6D, 0x69, 0x75, 0x6D, 0x20, 0x48}}; //emium H
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const CAN_frame_t BYD_3D0_3 = {.FIR = {.B = {.DLC = 8,.FF = CAN_frame_std,}},.MsgID = 0x3D0,.data = {0x03, 0x56, 0x53, 0x00, 0x00, 0x00, 0x00, 0x00}}; //VS
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//Actual content messages
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CAN_frame_t BYD_110 = {.FIR = {.B = {.DLC = 8,.FF = CAN_frame_std,}},.MsgID = 0x110,.data = {0x01, 0x90, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}};
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CAN_frame_t BYD_150 = {.FIR = {.B = {.DLC = 8,.FF = CAN_frame_std,}},.MsgID = 0x150,.data = {0x00, 0x00, 0x00, 0x00, 0x10, 0x27, 0x00, 0x00}};
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CAN_frame_t BYD_190 = {.FIR = {.B = {.DLC = 8,.FF = CAN_frame_std,}},.MsgID = 0x190,.data = {0x00, 0x00, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00}};
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CAN_frame_t BYD_1D0 = {.FIR = {.B = {.DLC = 8,.FF = CAN_frame_std,}},.MsgID = 0x1D0,.data = {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x03, 0x08}};
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CAN_frame_t BYD_210 = {.FIR = {.B = {.DLC = 8,.FF = CAN_frame_std,}},.MsgID = 0x210,.data = {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}};
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static int discharge_current = 0;
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static int charge_current = 0;
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static int initialDataSent = 0;
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static int temperature_average = 0;
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void update_values_can_byd()
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{ //This function maps all the values fetched from battery CAN to the correct CAN messages
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//Calculate values
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charge_current = ((max_target_charge_power*10)/max_volt_byd_can); //Charge power in W , max volt in V+1decimal (P=UI, solve for I)
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//The above calculation results in (30 000*10)/3700=81A
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charge_current = (charge_current*10); //Value needs a decimal before getting sent to inverter (81.0A)
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discharge_current = ((max_target_discharge_power*10)/max_volt_byd_can); //Charge power in W , max volt in V+1decimal (P=UI, solve for I)
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//The above calculation results in (30 000*10)/3700=81A
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discharge_current = (discharge_current*10); //Value needs a decimal before getting sent to inverter (81.0A)
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temperature_average = ((temperature_max + temperature_min)/2);
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//Map values to CAN messages
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//Maxvoltage (eg 400.0V = 4000 , 16bits long)
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BYD_110.data.u8[0] = (max_volt_byd_can >> 8);
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BYD_110.data.u8[1] = (max_volt_byd_can & 0x00FF);
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//Minvoltage (eg 300.0V = 3000 , 16bits long)
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BYD_110.data.u8[2] = (min_volt_byd_can >> 8);
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BYD_110.data.u8[3] = (min_volt_byd_can & 0x00FF);
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//Maximum discharge power allowed (Unit: A+1)
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BYD_110.data.u8[4] = (discharge_current >> 8);
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BYD_110.data.u8[5] = (discharge_current & 0x00FF);
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//Maximum charge power allowed (Unit: A+1)
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BYD_110.data.u8[6] = (charge_current >> 8);
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BYD_110.data.u8[7] = (charge_current & 0x00FF);
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//SOC (100.00%)
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BYD_150.data.u8[0] = (SOC >> 8);
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BYD_150.data.u8[1] = (SOC & 0x00FF);
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//StateOfHealth (100.00%)
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BYD_150.data.u8[2] = (StateOfHealth >> 8);
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BYD_150.data.u8[3] = (StateOfHealth & 0x00FF);
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//Maximum charge power allowed (Unit: A+1)
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BYD_150.data.u8[4] = (charge_current >> 8);
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BYD_150.data.u8[5] = (charge_current & 0x00FF);
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//Maximum discharge power allowed (Unit: A+1)
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BYD_150.data.u8[6] = (discharge_current >> 8);
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BYD_150.data.u8[7] = (discharge_current & 0x00FF);
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//Voltage (370.0)
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BYD_1D0.data.u8[0] = (battery_voltage >> 8);
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BYD_1D0.data.u8[1] = (battery_voltage & 0x00FF);
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//Current (TODO, SIGNED?)
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BYD_1D0.data.u8[2] = (battery_current >> 8);
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BYD_1D0.data.u8[3] = (battery_current & 0x00FF);
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//Temperature average
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BYD_1D0.data.u8[4] = (temperature_average >> 8);
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BYD_1D0.data.u8[5] = (temperature_average & 0x00FF);
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//Temperature max
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BYD_210.data.u8[0] = (temperature_max >> 8);
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BYD_210.data.u8[1] = (temperature_max & 0x00FF);
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//Temperature min
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BYD_210.data.u8[2] = (temperature_min >> 8);
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BYD_210.data.u8[3] = (temperature_min & 0x00FF);
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}
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void receive_can_byd(CAN_frame_t rx_frame)
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{
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switch (rx_frame.MsgID)
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{
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case 0x151: //Message originating from BYD HVS compatible inverter. Reply with CAN identifier!
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if(rx_frame.data.u8[0] & 0x01)
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{
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send_intial_data();
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}
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break;
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default:
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break;
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}
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}
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void send_can_byd()
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{
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unsigned long currentMillis = millis();
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// Send initial CAN data once on bootup
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if (!initialDataSent)
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{
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send_intial_data();
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initialDataSent = 1;
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}
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if(bms_status != FAULT)
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{ // Send CAN messages towards inverter if battery is OK
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// Send 2s CAN Message
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if (currentMillis - previousMillis2s >= interval2s)
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{
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previousMillis2s = currentMillis;
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ESP32Can.CANWriteFrame(&BYD_110);
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}
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// Send 10s CAN Message
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if (currentMillis - previousMillis10s >= interval10s)
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{
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previousMillis10s = currentMillis;
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ESP32Can.CANWriteFrame(&BYD_150);
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ESP32Can.CANWriteFrame(&BYD_1D0);
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ESP32Can.CANWriteFrame(&BYD_210);
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//Serial.println("CAN 10s done");
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}
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//Send 60s message
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if (currentMillis - previousMillis60s >= interval60s)
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{
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previousMillis60s = currentMillis;
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ESP32Can.CANWriteFrame(&BYD_190);
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//Serial.println("CAN 60s done");
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}
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}
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}
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void send_intial_data()
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{
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ESP32Can.CANWriteFrame(&BYD_250);
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ESP32Can.CANWriteFrame(&BYD_290);
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ESP32Can.CANWriteFrame(&BYD_2D0);
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ESP32Can.CANWriteFrame(&BYD_3D0_0);
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ESP32Can.CANWriteFrame(&BYD_3D0_1);
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ESP32Can.CANWriteFrame(&BYD_3D0_2);
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ESP32Can.CANWriteFrame(&BYD_3D0_3);
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}
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