Hi 
I’ve tried to read the VIN of my car with the CAN-BUS-Shield.
When I use the following code the response gives me the first three chars of the VIN (TMB).
I found this wikipedia article which describes the flow control frame. bit.ly/1JnAYy5
Can someone tell me how I can read the whole VIN with this technique?
#include <mcp_can.h>
#include <SPI.h>
#define CAN_BCAST 0x7df
MCP_CAN CAN(9);
unsigned char Flag_Recv = 0;
unsigned char len = 0;
unsigned char buf[8];
char str[20];
//EXTBYTS MODE PID UNUSED
unsigned char canBuf[8] = {0x02, 0x09, 0x02, 0, 0, 0, 0, 0};
unsigned char canFlow[8] = {0x30, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00};
void setup() {
Serial.begin(9600);
//---------------------------------------------------------------------------------------------------------------
//Init CAN-Bus
pinMode(2, INPUT); // Setting pin 2 for /INT input
Serial.println("Init CAN-BUS...");
if (CAN.begin(CAN_500KBPS) == CAN_OK)
Serial.print("Init CAN-BUS done!");
else
Serial.print("Init CAN-BUS ERROR!");
CAN.init_Mask(0, 0, 0x7f0);
CAN.init_Mask(1, 0, 0x7f0);
CAN.init_Filt(0, 0, 0x7e0);
CAN.init_Filt(1, 0, 0x7e0);
CAN.init_Filt(2, 0, 0x7e0);
CAN.init_Filt(3, 0, 0x7e0);
CAN.init_Filt(4, 0, 0x7e0);
CAN.init_Filt(5, 0, 0x7e0);
}
void loop() {
// put your main code here, to run repeatedly:
Serial.println();
Flag_Recv = 0;
unsigned char vinBuf[8];
CAN.sendMsgBuf(0x7df, 0, 8, canBuf);
delay(100);
CAN.readMsgBuf(&len, vinBuf);
for(int i = 0; i<len; i++) // print the data
{
Serial.print("");
Serial.print(vinBuf[i], HEX);
Serial.print("\t");
}
Serial.println();
delay(100);
CAN.sendMsgBuf(0x7df, 0, 8, canFlow);
delay(100);
CAN.readMsgBuf(&len, vinBuf);
for(int i = 0; i<len; i++) // print the data
{
Serial.print("");
Serial.print(vinBuf[i], HEX);
Serial.print("\t");
}
Serial.println();
while(1);
}Thanks in advance! 
Dominik
