My code wasn't working, and it took me quite a while to figure out why. I ended up having to install ST's Visual Develop IDE so that I could use the debugger and step through the executing code.
The mistake was on this line: ldf ([_flash_write_block_addr_tmp], x), a I forgot to take into account that 'addr_tmp' was a 32-bit variable, so the address the symbol represents would be pointing to the highest byte, which will always be zero for a 24-bit address! If for example the address was 0x00027F80, that code would be trying to write to 0x00027F, which is RAM, not flash! I need to shift the address along one byte, so that line should in fact be: ldf ([_flash_write_block_addr_tmp+1], x), a With that it all works properly. :-) Regards, Basil
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