AT89C51RB2/RC2
Blank Check Command
Description
Figure 43. Blank Check Flow
Bootloader
Host
Blank Check Command
’X’ & CR & LF
Send Blank Check Command
Wait Blank Check Command
OR
Wait Checksum Error
Checksum error
Send Checksum error
COMMAND ABORTED
Flash blank
’.’ & CR & LF
Wait COMMAND_OK
COMMAND FINISHED
OR
Send COMMAND_OK
address & CR & LF
Send first Address
not erased
Wait Address not
erased
COMMAND FINISHED
Example
Blank Check ok
HOST
: 05 0000 04 0000 7FFF 01 78
: 05 0000 04 0000 7FFF 01 78 . CR LF
BOOTLOADER
Blank Check ko at address xxxx
HOST
: 05 0000 04 0000 7FFF 01 78
BOOTLOADER
: 05 0000 04 0000 7FFF 01 78 xxxx CR LF
Blank Check with checksum error
HOST
: 05 0000 04 0000 7FFF 01 70
BOOTLOADER
: 05 0000 04 0000 7FFF 01 70 X CR LF CR LF
101
4180E–8051–10/06
ATMEL [ ATMEL ]
