CAN - Shield Serial Monitor

giliepin wrote:There's something that i dont understand. Why when I add the function of printing the error on the monitor I dont get any interrupts?
This is very strange to me

Code:void setup()
{
CAN.begin(CAN_500KBPS); // init can bus : baudrate = 500k
attachInterrupt(0, MCP2515_ISR, FALLING); // start interrupt
Serial.begin(115200);
}

void MCP2515_ISR()
{
Flag_Recv = 1;
}

void loop()
{

if(Flag_Recv) // check if get data
{
Flag_Recv = 0; // clear flag
CAN.readMsgBuf(&len, buf); // read data, len: data length, buf: data buf
Serial.println("CAN_BUS GET DATA!");
Serial.print("data len = ");Serial.println(len);
for(int i = 0; i<len; i++) // print the data
{
Serial.print(buf[i]);Serial.print("\t");
}
Serial.println();
Serial.print ("RPM: ");Serial.print(RPMreading(buf[0],buf[1]));Serial.print("\t");//print the decimal value of the RPM
Serial.print ("GEAR: ");Serial.print(buf[3]);Serial.print("\t"); //print the decimal value of the GEAR
Serial.print ("BATT: ");Serial.print(BATTreading(buf[4],buf[5]));Serial.print("\t");//print the decimal value of the BATTERY
Serial.print ("ET: ");Serial.print(ETreading(buf[6],buf[7]));Serial.print("\t");//print the decimal value of the ENGINE TEMP
Serial.println();

}

Serial.print ("value of error register: ");
Serial.println (CAN.checkError());

}

try this :

Code:unsigned char err = CAN.checkError();
if(err!= CAN_OK)
{
Serial.print ("value of error register: ");
Serial.println (err);
}

Statistics : Posted by giliepin • on Tue Feb 26, 2013 8:10 pm • Replies 10 • Views 601

CAN - Shield Serial Monitor

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