├── README.md
└── VEcan.ino


/README.md:
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 1 | # VEcan
 2 | Communicating with Victron energy products, also compatible with other inverters and solar equipement
 3 | 
 4 | Communication over canbus at 250kbps
 5 | Battery information for system to use;
 6 | -Battery Voltage
 7 | -Battery Current
 8 | -Battery Temperature
 9 | -Charge Voltage Limit
10 | -Charge Current Limit
11 | -Dischcarge Voltage Limit
12 | -Discharge Current Limit
13 | -SOH
14 | -SOC
15 | 


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/VEcan.ino:
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  1 | 
  2 | #include <mcp_can.h>
  3 | #include <SPI.h>
  4 | 
  5 | //variables for VE can
  6 | uint16_t chargevoltage = 49100; //max charge voltage in mv
  7 | uint16_t chargecurrent = 30000; //max charge current in ma
  8 | uint16_t disvoltage = 42000; // max discharge voltage in mv
  9 | uint16_t discurrent = 30000; // max discharge current in ma
 10 | uint16_t SOH = 100; // SOH place holder
 11 | 
 12 | unsigned char mes[8] = {0, 0, 0, 0, 0, 0, 0, 0};
 13 | unsigned char bmsname[8] = {'S', 'I', 'M', 'P', '-', 'B', 'M', 'S'};
 14 | unsigned char bmsmanu[8] = {'T', 'O', 'M', ' ', 'D', 'E', ' ', 'B'};
 15 | 
 16 | MCP_CAN CAN(9); //set CS pin for can controlelr
 17 | 
 18 | int SOC =80;
 19 | 
 20 | float PackVoltage = 46.7;
 21 | float AvgTemperature = 20.5;
 22 | uint16_t currentact = 0;
 23 | 
 24 | void setup() {
 25 | 
 26 |   Serial.begin(115200);
 27 |   
 28 |   // put your setup code here, to run once:
 29 | if(CAN.begin(MCP_ANY, CAN_250KBPS, MCP_16MHZ) == CAN_OK) Serial.println("MCP2515 Initialized Successfully!");
 30 |   else Serial.println("Error Initializing MCP2515...");
 31 | 
 32 |   CAN.setMode(MCP_NORMAL); 
 33 | }
 34 | 
 35 | void loop() {
 36 |   // put your main code here, to run repeatedly:
 37 |   VEcan();
 38 |   delay(200);
 39 | }
 40 | 
 41 | 
 42 | void VEcan() //communication with Victron system over CAN
 43 | {
 44 |   mes[0] = lowByte(chargevoltage / 100);
 45 |   mes[1] = highByte(chargevoltage / 100);
 46 |   mes[2] = lowByte(chargecurrent / 100);
 47 |   mes[3] = highByte(chargecurrent / 100);
 48 |   mes[4] = lowByte(discurrent / 100);
 49 |   mes[5] = highByte(discurrent / 100);
 50 |   mes[6] = lowByte(disvoltage / 100);
 51 |   mes[7] = highByte(disvoltage / 100);
 52 | 
 53 |   CAN.sendMsgBuf(0x351, 0, 8, mes);
 54 | Serial.println(" ");
 55 | for (int i = 0; i<8; i++)
 56 | {
 57 |   Serial.print(mes[i]);
 58 |   Serial.print(" , ");
 59 | }
 60 | 
 61 |   mes[0] = lowByte(SOC);
 62 |   mes[1] = highByte(SOC);
 63 |   mes[2] = lowByte(SOH);
 64 |   mes[3] = highByte(SOH);
 65 |   mes[4] = lowByte(SOC * 10);
 66 |   mes[5] = highByte(SOC * 10);
 67 |   mes[6] = 0;
 68 |   mes[7] = 0;
 69 | 
 70 |   CAN.sendMsgBuf(0x355, 0, 8, mes);
 71 | Serial.println(" ");
 72 | for (int i = 0; i<8; i++)
 73 | {
 74 |   Serial.print(mes[i]);
 75 |   Serial.print(" , ");
 76 | }
 77 | 
 78 |   mes[0] = lowByte(uint16_t(PackVoltage * 100));
 79 |   mes[1] = highByte(uint16_t(PackVoltage * 100));
 80 |   mes[2] = lowByte(uint16_t(currentact / 100));
 81 |   mes[3] = highByte(uint16_t(currentact / 100));
 82 |   mes[4] = lowByte(uint16_t(AvgTemperature * 10));
 83 |   mes[5] = highByte(uint16_t(AvgTemperature * 10));
 84 | 
 85 |   CAN.sendMsgBuf(0x356, 0, 8, mes);
 86 | Serial.println(" ");
 87 | for (int i = 0; i<8; i++)
 88 | {
 89 |   Serial.print(mes[i]);
 90 |   Serial.print(" , ");
 91 | }
 92 | 
 93 |   mes[0] = 0;
 94 |   mes[1] = 0;
 95 |   mes[2] = 0;
 96 |   mes[3] = 0;
 97 |   mes[4] = 0;
 98 |   mes[5] = 0;
 99 |   mes[6] = 0;
100 |   mes[7] = 0;
101 | 
102 |   CAN.sendMsgBuf(0x35A, 0, 8, mes);
103 | 
104 | Serial.println(" ");
105 | for (int i = 0; i<8; i++)
106 | {
107 |   Serial.print(mes[i]);
108 |   Serial.print(" , ");
109 | }
110 | 
111 | delay(5);
112 |   CAN.sendMsgBuf(0x370, 0, 8, bmsname);
113 | 
114 |   Serial.println(" ");
115 | for (int i = 0; i<8; i++)
116 | {
117 |   Serial.print(bmsname[i]);
118 |   Serial.print(" , ");
119 | }
120 | delay(5);
121 |   CAN.sendMsgBuf(0x35E, 0, 8, bmsmanu); 
122 | Serial.println(" ");
123 | for (int i = 0; i<8; i++)
124 | {
125 |   Serial.print(bmsmanu[i]);
126 |   Serial.print(" , ");
127 | }
128 | 
129 | }
130 | 


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