Sending Firmware Data - Novatel SMART7 Installation And Operation Manual

Chapter 9 NovAtel Firmware and Software
S3 LL AAAAAAAA
4 - Byte Address. Set this as the value of "offset" in the SOFTLOADDATA
command
Length. This is the hexadecimal number of character pairs to follow in the record. This value
minus 4 bytes for the address and 1 byte for the check sum is copied into the "data length" field of
the SOFTLOADDATA command
Header

9.4.3 Sending Firmware Data

C++ source code is available to provide example code of processing S-Records and converting
them to NovAtel format commands, as well as providing help with the SoftLoad process. Contact
NovAtel Customer Support
The SOFTLOADSREC and SOFTLOADDATA commands can be used to send firmware data from
*.shex files to the receiver.
S0, S5 and S7 S-Records should be sent directly to the receiver using the SOFTLOADSREC com-
mand, by enclosing the S-Record in quotation marks and issuing the command to the receiver,
as follows:
SOFTLOADSREC "<S-RECORD>"
S3 records can be sent individually to the receiver using the SOFTLOADSREC command. Altern-
atively, the data from an S3 record can be parsed and packaged together with data from other
S3 records into a binary SOFTLOADDATA command. Packaging data parsed from multiple S3
records into a binary SOFTLOADDATA command can result in improved firmware update times
as each S3 record contains only a small number of bytes of firmware data. A single
SOFTLOADDATA command can package up to 4096 bytes of firmware data from multiple S3
records, whereas a single SOFTLOADSREC command contains a maximum of 28 bytes of firm-
ware data from a single S3 record.
Multiple S3 records can be packaged into a single SOFTLOADDATA command as long as the
data from one S3 record follows immediately after the previous record. That is, the address
from the current S3 record must equal the address from the previous S3 record plus the data
length of the previous S3 record. If the data is not consecutive then the SOFTLOADDATA com-
mand can be sent with the amount of data it has packaged up to that point. Subsequent data can
be packaged in a new SOFTLOADDATA command. Within the SOFTLOADDATA command, the
"offset" field remains the address of the first S3 record and the "data" and "data length" are
updated to include the new data. Refer to the
for command details.
The *.shex file data may contain many gaps and jumps. For example, in many NovAtel *.shex
files, data for address 0x000_00000 is stored near the very end of the file.
Example Packaging Multiple S3 Records In A SOFTLOADDATA Command
Start a new SOFTLOADDATA command
S32100407AD48FCA63034B80F5CE0C36507DE3D8DCC0C6C0C00515D74BCACF2F2949E1
Address: 0x00407AD4 Num Data Bytes: 0x21 – 0x01 – 0x04 = 0x1C
S32100407AF04CCA4985F0F7B081E41D9B7D806C26989AE2D4E4CCBCB47C10FBFD3E43
SMART7 Installation and Operation User Manual 0C
DDDDDDDD...DDDDDDDD
Little Endian Data. These bytes are copied into the "data"
field of the SOFTLOADDATA command
and ask about the srec2softload utility.
Agriculture Commands and Logs Reference Manual
CC
Check Sum
121