Nxp Semiconductors UM10237 ユーザーズマニュアル
UM10237_2
© NXP B.V. 2008. All rights reserved.
User manual
Rev. 02 — 19 December 2008
689 of 792
NXP Semiconductors
UM10237
Chapter 30: LPC24XX Flash memory programming firmware
9.12 Read Boot code version number
9.13 Compare <address1> <address2> <no of bytes>
9.14 ISP Return Codes
Table 617. LPC24xx part Identification numbers
Device
ASCII/dec coding
Hex coding
LPC2458
352386869
0x1500 FF35
LPC2468
369164085
0x1600 FF35
LPC2478
386006837
0x1701 FF35
Table 618. ISP Read Boot Code version number command
Command
K
Input
None
Return Code
CMD_SUCCESS followed by 2 bytes of boot code version number in ASCII format.
It is to be interpreted as <byte1(Major)>.<byte0(Minor)>.
It is to be interpreted as <byte1(Major)>.<byte0(Minor)>.
Description
This command is used to read the boot code version number.
Table 619. ISP Compare command
Command
M
Input
Address1 (DST):
Starting Flash or RAM address of data bytes to be compared.
This address should be a word boundary.
Address2 (SRC):
Starting Flash or RAM address of data bytes to be compared.
This address should be a word boundary.
Number of Bytes:
Number of bytes to be compared; should be a multiple of 4.
Return Code
CMD_SUCCESS | (Source and destination data are equal)
COMPARE_ERROR | (Followed by the offset of first mismatch)
COUNT_ERROR (Byte count is not a multiple of 4) |
ADDR_ERROR |
ADDR_NOT_MAPPED |
PARAM_ERROR |
Description
This command is used to compare the memory contents at two locations.
Compare result may not be correct when source or destination address
contains any of the first 64 bytes starting from address zero. First 64 bytes
are re-mapped to Flash boot sector
contains any of the first 64 bytes starting from address zero. First 64 bytes
are re-mapped to Flash boot sector
Example
"M 8192 1073741824 4<CR><LF>" compares 4 bytes from the RAM address
0x4000 0000 to the 4 bytes from the Flash address 0x2000.
0x4000 0000 to the 4 bytes from the Flash address 0x2000.
Table 620. ISP Return Codes Summary
Return
Code
Code
Mnemonic
Description
0
CMD_SUCCESS
Command is executed successfully. Sent by ISP
handler only when command given by the host has
been completely and successfully executed.
handler only when command given by the host has
been completely and successfully executed.
1
INVALID_COMMAND
Invalid command.
2
SRC_ADDR_ERROR
Source address is not on word boundary.