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38
2.6
CHAPTER 2
Working with Flasher
Patch file support
In stand-alone mode Flasher supports patch files which allows to patch the content of
the data to be programmed. Before starting programming process in stand-alone
mode, Flasher will look for a file named Patches.txt being present on the Flasher.
This file includes the patches. If this file is present, the number in Serial.txt
describes the line number of the Patches.txt that will be used for the current cycle
(line counting starts at 0).
Each line in the Patches.txt can hold up to 4 patches, where each patch can be up
to 32 bytes in length.
Syntax
The syntax for <NumPatches>==4 is as follows:
<NumPatches>,<Addr>,<NumBytes>,<Data>,<Addr>,<NumBytes>,<Data>,<Addr>,
<NumBytes>,<Data>,<Addr>,<NumBytes>:<Data>\r\n
Each patch-line containts
describes each parameter.
Parameter
<NumPatches>
<Addr>
<NumBytes>
<Data>
Note:
<Addr>,<NumBytes>:<Data>.
Find
below
a
table
which
Description
Describes the number of patches in this
patch line. Max. value is 4.
Describes the address to be patched.
Value is expected in hex.
Number of bytes for the current patch.
Max. value is 20h (32 in decimal).
Describes the data to be patched.
<Data> is always expected as 2 characters per byte.
All values are expected in hexadecimal format (hex).
<Data> section is always preceeded by ":", not ",".
Example
Please find below a sample sequence which clarifies the usage of patch files.
Patches.txt, which is located on the Flasher, contains the following line:
3,100025,3,AABBCC,100063,2,DDEE,100078,1,FF
Serial.txt contains a "0" which force the Flasher to use line 0 from Patches.txt.
After starting the programming cycle, the following data will be patched:
Addr 0x100025: 3 byte 0xAA 0xBB 0xCC
Addr 0x100063: 2 byte 0xDD 0xEE
Addr 0x100078: 1 byte 0xFF
Single patch via RS232
Alternatively, you can start a programming cycle with patch data that is only valid for
this one cycle (no need for a Patches.txt file):
Send the #AUTO PATCH <NumPatches>,<Addr>,<NumBytes>:<Data>
command via Flasher ASCII interface. The parameters have the same function as
described in the table above.
Flasher User Guide (UM08022)
© 2004-2013 SEGGER Microcontroller GmbH & Co. KG