Intel 32 HEX format structure

[yura717]

Hello,
Please help to understand Intel hex format.
:020000040000FA
:20108000FB0500000000000000000000000000000000000000000000000000000000000050
:2010A000000000000000000000000000000000000000000000000000000000000000000030
:2010C0000000000000000000000000000000000000000000000000000000FFFF04BD24AC81
:2010E0000000000000000000000000040004000000000000000000000000000000000000E8
:2011000000000000000000000000000000000000000000000000051FD2B61C015E6F000039
:201120000000F89B0000FFFF01FF808E0000000000FF01FF0000050080FF0000000000008D
:20114000010011FE11FFFFFF000001FF43C8000043AF00000101FFFF4100BF6E80F780F11E
:2011600017170101437573746F6D6572204E616D652A2AFF3217AE802A2A2A2A2A2A2A2A32

first line is Extended Segment Address.
second line has 20 bytes of data at what address?
I wonder if exist some which can be used to analyze Intel hex records?
Thank you.

 

[Easyrider83]

This is simple.
:NN - amount of bytes in followed string (20 is 32, 0x20 hex == 32 dec)
Then LLLL is a 2 bytes offset from HHHH pointer. HHHHLLLL is absolete address. For example, second string: 20 1080 mease 32 bytes starting from HHHH1080
HHHH pointer is defined in first string: 02 - fixed size of this pointer. For 32 bit it always will be 2 bytes (half). Than 0000, always. Than 04 is a command that we need to define this HHHH pointer and 0000 at the end of first string is that pointer value, so HHHH == 0x0000.
0xFA is CRC.
So, starting from second string we need to put 32 bytes to the 0x00001080 address. 0x50 is CRC.
Next string - 32 bytes to the 0x000010A0 address and so on
This is my HEX flasher code:
https://github.com/Virviglaz/MyLibraries/blob/master/Common/HEX_Flasher.c
https://github.com/Virviglaz/MyLibraries/blob/master/Common/HEX_Flasher.h

 

[KlausST]

Hi,

Is it asking too much to do a simple internet search on your own?
Or a look to wikipedia or other source of information:
https://en.m.wikipedia.org/wiki/Intel_HEX

Klaus

 

[yura717]

This is simple.
:NN - amount of bytes in followed string (20 is 32, 0x20 hex == 32 dec)
Then LLLL is a 2 bytes offset from HHHH pointer. HHHHLLLL is absolete address. For example, second string: 20 1080 mease 32 bytes starting from HHHH1080
HHHH pointer is defined in first string: 02 - fixed size of this pointer. For 32 bit it always will be 2 bytes (half). Than 0000, always. Than 04 is a command that we need to define this HHHH pointer and 0000 at the end of first string is that pointer value, so HHHH == 0x0000.
0xFA is CRC.
So, starting from second string we need to put 32 bytes to the 0x00001080 address. 0x50 is CRC.
Next string - 32 bytes to the 0x000010A0 address and so on
This is my HEX flasher code:
https://github.com/Virviglaz/MyLibraries/blob/master/Common/HEX_Flasher.c
https://github.com/Virviglaz/MyLibraries/blob/master/Common/HEX_Flasher.h

Thank you,man!
Do you know how to recognaze entry point in intel hex file? /from which address, bootloader is going to excute the progrtam?

 

[FvM]

Intel Hex has record 03 and 05 for start address. Review a documentation, e.g. https://en.wikipedia.org/wiki/Intel_HEX