Motorola MPC564EVB Manuel d'utilisateur télécharger pdf (Page 68)

3-18 MPC564EVB User’s Manual

Commands

DN Download Network

Usage: DN <-c> <-e> <-i> <-s> <-o offset> <filename>

The DN command downloads code from the network. The DN command handle files which are

either S-record, COFF, ELF or Image formats. The DN command uses Trivial File Transfer

Protocol (TFTP) to transfer files from a network host.

In general, the type of file to be downloaded and the name of the file must be specified to the DN

command. The -c option indicates a COFF download, the -e option indicates an ELF download,

the -i option indicates an Image download, and the -s indicates an S-record download. The -o

option works only in conjunction with the -s option to indicate an optional offset for S-record

download. The filename is passed directly to the TFTP server and therefore must be a valid

filename on the server.

If neither of the -c, -e, -i, -s or filename options are specified, then a default filename and filetype

will be used. Default filename and filetype parameters are manipulated using the SET and SHOW

commands.

The DN command checks the destination download address for validity. If the destination is an

address outside the defined user space, then an error message is displayed and downloading

aborted.

For ELF and COFF files which contain symbolic debug information, the symbol tables are

extracted from the file during download and used by dBUG. Only global symbols are kept in

dBUG. The dBUG symbol table is not cleared prior to downloading, so it is the user’s responsibility

to clear the symbol table as necessary prior to downloading.

If an entry point address is specified in the S-record, COFF or ELF file, the program counter is set

accordingly.

Examples:

To download an S-record file with the name “srec.out”, the command is:

dn -s srec.out

To download a COFF file with the name “coff.out”, the command is:

dn -c coff.out

To download a file using the default filetype with the name “bench.out”, the command is:

dn bench.out

To download a file using the default filename and filetype, the command is:

Frees

cale Semiconductor,

Freescale Semiconductor, Inc.

For More Information On This Product,

Go to: www.freescale.com

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Motorola MPC564EVB Manuel d'utilisateur Page 68