- Ask a related questionWhat is a related question?A related question is a question created from another question. When the related question is created, it will be automatically linked to the original question.
I need to read metadata from a hex file generated with hex2000 utility. I allocated a section in linker file
PAGE 1 : /* Data Memory */
RAMM0_M1 : origin = 0x000000, length = 0x000600 /* on-chip RAM block M0 + M1. 0x600 to 0x800 reserved for InstaSPIN */
D_RAML0 : origin = 0x0081CC, length = 0x000E22 /* on-chip DRAM block L0 */
VERSION : origin = 0x008FEE, length = 0x000012 /* version data */
}
...
version : > VERSION PAGE = 1
and put metadata structure into it
#pragma DATA_SECTION(versionStruct,"version");
static VersionStruct_t versionStruct = {.fwVersion = FW_VERSION,
.pcbRevision = 2,
.fwDate = DATE_PACK(__DATE__),
.fwTime = TIME_PACK(__TIME__),
.reserved = {0, 0}};
The generated hex file (hex2000 -boot -sci8 -a -o) has the following output:
AA 08 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 3F 00 F6 7F 4B 00
3F 00 64 5A EE FF EE 8F 00 00 07 00 09 00 41 75 67 20 20 36 20 32 30 31
39 00 31 36 3A 32 34 3A 34 31 02 00 00 00 00 00 00 00 00 00 00 00 FE FF
The metadata structure is highlighted with red, the green one is the address I guess.
Then when I need to read the metadata, I skip on the file offset of the metadata.
getc(file);
for (int i = 0; i < OFFSET; i++) {
fscanf(app_file, "%x ", &read_byte);
}
Then read metadata starting from this offset.
The issue is that OFFSET depends on how the memory is filled and this offset changes. How can I find the hex file offset where the metadata is placed?
My guess is to skip data until meet EE 8F 00 00, but this may be met in the data as well, not necessarily an address. Could you provide me the decription of the format of this file? I didn't find it.
