Ndwritememorybyaddress, Ndwritememorybyaddress -75 – National Instruments CAN 372139B-01 User Manual
Page 239
Chapter 6
Automotive Diagnostic Command Set API for C
© National Instruments Corporation
6-75
Automotive Diagnostic Command Set User Manual
ndWriteMemoryByAddress
Purpose
Executes the WriteMemoryByAddress service. Writes data to the ECU memory.
Format
long ndWriteMemoryByAddress(
TD1 *diagRef,
unsigned long address,
unsigned char size,
unsigned char dataIn[],
long len,
LVBoolean *success);
Input
diagRef
Specifies the diagnostic session handle, obtained from
and passed
to subsequent diagnostic functions. Normally, it is not necessary to manually manipulate
the elements of this struct.
address
Defines the memory address to which data are written. Only three bytes are sent to the
ECU, so the address must be in the range 0–FFFFFF (hex).
size
Defines the length of the memory block to be written.
dataIn
Defines the memory block to be written to the ECU.
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