SCANTECH ID (Champtek company) Discovery SG-20 - Manual (Page 103)

Scantech-ID Discovery SG-20 95
S2240600003F3F3F3C20000004200000072000000720000007200000072000000720000007CE
The databytes to be programmed. These bytes form the top eight pixelrows
of the icon.
S2240600003F3F3F3C20000004200000072000000720000007200000072000000720000007CE
The Checksum
How to download S-Records to the Discovery.
Note : Only one sector at a time can be written to. This means that font sets can
not be downloaded together with images and Icons.
The Discovery uses S-Records for downloading flash information. Once you have
created an S-Record file, containing your images or fonts, you probably would
like to upload these to a Discovery.
This can be achieved following these steps :
A Initiating the download sequence.
B Sending the S-Records
A Initiating the download sequence.
The Discovery first has to clear the target area inside the flash memory, before
anything can be written to it.
* Send the following command to the Discovery:
0x08<Start Address><Length>
0x08 The command
Start Address The start address of the area which is to be cleared.
Field length : 5 bytes.
Use ASCII characters to form the address in hex notation.
eg : 0x52A00 should be formed as ASCII characters
'5' '2' 'A' '0' '0'
(or in hex values : 0x35 0x32 0x41 0x30 0x30)
Length The length of the area to be cleared
Field length : 4 bytes
Use ASCII characters to form the length in hex notation.