Hola
Tengo el siguiente codigo que me confirma el autor que funciona en Arduino Uno en can bus
yo lo he instalado en arduino mega 2560 conectando a los pins 50,51,52 y 53 y no me funciona.
he cambiado MCP_CAN CAN(10) por MCP_CAN CAN(53) pero sigue sin funcionar.
he visto en foros el mismo problema, pero no le he encontrado el motivo.
la placa can bus que tengo es la adjunta
cuando logre que lo detecte el software venus, (que según el creador funciona) tiene que leer los datos por el puerto serie para enviarlos por CAN. Pero primero que identifique el modulo
#include <mcp_can.h>
#include <SPI.h>
//variables for VE can
uint16_t chargevoltage = 49100; //max charge voltage in mv
uint16_t chargecurrent = 30000; //max charge current in ma
uint16_t disvoltage = 42000; // max discharge voltage in mv
uint16_t discurrent = 30000; // max discharge current in ma
uint16_t SOH = 100; // SOH place holder
unsigned char mes[8] = {0, 0, 0, 0, 0, 0, 0, 0};
unsigned char bmsname[8] = {'S', 'I', 'M', 'P', '-', 'B', 'M', 'S'};
unsigned char bmsmanu[8] = {'T', 'O', 'M', ' ', 'D', 'E', ' ', 'B'};
MCP_CAN CAN(53); //set CS pin for can controlelr
int SOC =80;
float PackVoltage = 46.7;
float AvgTemperature = 20.5;
uint16_t currentact = 0;
void setup() {
Serial.begin(115200);
// put your setup code here, to run once:
if(CAN.begin(MCP_ANY, CAN_250KBPS, MCP_8MHZ) == CAN_OK) Serial.println("MCP2515 Initialized Successfully!");
else Serial.println("Error Initializing MCP2515...");
CAN.setMode(MCP_NORMAL);
}
void loop() {
// put your main code here, to run repeatedly:
VEcan();
delay(200);
}
void VEcan() //communication with Victron system over CAN
{
mes[0] = lowByte(chargevoltage / 100);
mes[1] = highByte(chargevoltage / 100);
mes[2] = lowByte(chargecurrent / 100);
mes[3] = highByte(chargecurrent / 100);
mes[4] = lowByte(discurrent / 100);
mes[5] = highByte(discurrent / 100);
mes[6] = lowByte(disvoltage / 100);
mes[7] = highByte(disvoltage / 100);
CAN.sendMsgBuf(0x351, 0, 8, mes);
Serial.println(" ");
for (int i = 0; i<8; i++)
{
Serial.print(mes[i]);
Serial.print(" , ");
}
mes[0] = lowByte(SOC);
mes[1] = highByte(SOC);
mes[2] = lowByte(SOH);
mes[3] = highByte(SOH);
mes[4] = lowByte(SOC * 10);
mes[5] = highByte(SOC * 10);
mes[6] = 0;
mes[7] = 0;
CAN.sendMsgBuf(0x355, 0, 8, mes);
Serial.println(" ");
for (int i = 0; i<8; i++)
{
Serial.print(mes[i]);
Serial.print(" , ");
}
mes[0] = lowByte(uint16_t(PackVoltage * 100));
mes[1] = highByte(uint16_t(PackVoltage * 100));
mes[2] = lowByte(uint16_t(currentact / 100));
mes[3] = highByte(uint16_t(currentact / 100));
mes[4] = lowByte(uint16_t(AvgTemperature * 10));
mes[5] = highByte(uint16_t(AvgTemperature * 10));
CAN.sendMsgBuf(0x356, 0, 8, mes);
Serial.println(" ");
for (int i = 0; i<8; i++)
{
Serial.print(mes[i]);
Serial.print(" , ");
}
mes[0] = 0;
mes[1] = 0;
mes[2] = 0;
mes[3] = 0;
mes[4] = 0;
mes[5] = 0;
mes[6] = 0;
mes[7] = 0;
CAN.sendMsgBuf(0x35A, 0, 8, mes);
Serial.println(" ");
for (int i = 0; i<8; i++)
{
Serial.print(mes[i]);
Serial.print(" , ");
}
delay(5);
CAN.sendMsgBuf(0x370, 0, 8, bmsname);
Serial.println(" ");
for (int i = 0; i<8; i++)
{
Serial.print(bmsname[i]);
Serial.print(" , ");
}
delay(5);
CAN.sendMsgBuf(0x35E, 0, 8, bmsmanu);
Serial.println(" ");
for (int i = 0; i<8; i++)
{
Serial.print(bmsmanu[i]);
Serial.print(" , ");
}
}
