Filter
Top Products
Chapter 6 Automotive Diagnostic Command Set API for C
© National Instruments Corporation 6-73 Automotive Diagnostic Command Set User Manual
ndWriteDataByLocalIdentifier
Purpose
Executes the WriteDataByLocalIdentifier service. Writes a data record to the ECU.
Format
long ndWriteDataByLocalIdentifier(
TD1 *diagRef,
unsigned char localID,
unsigned char dataIn[],
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.
localID
Defines the local identifier of the data to be read. The values are application specific.
dataIn
Defines the data record to be written to the ECU. If you know the record data description,
use
ndConvertFromPhys to generate this record.
len
Must contain the number of valid data bytes in dataIn.
Output
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.