National Instruments CAN 372139B-01 - Manual (Page 215)

Chapter 6 Automotive Diagnostic Command Set API for C
© National Instruments Corporation 6-51 Automotive Diagnostic Command Set User Manual
ndReadECUIdentification
Purpose
Executes the ReadECUIdentification service. Returns ECU identification data.
Format
long ndReadECUIdentification(
TD1 *diagRef,
unsigned char mode,
unsigned char dataOut[],
long *len,
LVBoolean *success);
Input
diagRef
Specifies the diagnostic session handle, obtained from ndOpenDiagnostic and passed
to subsequent diagnostic functions. Normally, it is not necessary to manually manipulate
the elements of this struct.
mode
Indicates the type of identification information to be returned. The values are application
specific.
Output
dataOut
Returns the ECU identification data.
len
On input, len must contain the dataOut array length. On return, it contains the number
of valid data bytes in the dataOut array.
success
Indicates successful receipt of a positive response message for this diagnostic service.
Return Value
The return value indicates the function call status as a signed 32-bit integer. Zero means the
function executed successfully. A negative value specifies an error, which means the function
did not perform the expected behavior. A positive value specifies a warning, which means the
function performed as expected, but a condition arose that may require attention.
Use the ndStatusToString function to obtain a descriptive string for the return value.