Skip to main content
kalpaknirale
Associate II
November 7, 2024
Solved

File size larger than flash size

Hey everyone I have a qn freejoy.hex is 155kb and my stm32c8t6 is only 64kbs and 128kb how did yall get it flashed

Refer freejoy and freejoy configurator 

It gives me an error file size larger than flash size but other people seems to have workaround any guidence would help a lot

Thanks

This topic has been closed for replies.
Andrew Neil
Andrew NeilBest answer
Super User
November 8, 2024
@kalpaknirale wrote:

Is that how st link utility works ? 

It's a direct result of the Intel Hex format encoding - It has nothing to do with ST-Link Utility per se.

 

In the Intel Hex format, each byte of data is encoded as two characters - ie, 2 bytes.

So that immediately makes the data two times the size.

Then there's the added overhead of addresses and checksums - so the overall inflation becomes around 2.5 times.

See the link posted earlier by @mƎALLEm 

 

#HexSize

A complex system that works is invariably found to have evolved from a simple system that worked.A complex system designed from scratch never works and cannot be patched up to make it work.
View in thread

9 replies

mƎALLEm
mƎALLEm
ST Technical Moderator
November 7, 2024

Hello,

Hex file does not reflect the real size of the application. It contains also the addresses: https://en.wikipedia.org/wiki/Intel_HEX

If your the generated binary exceeds the Flash size oh the MCU you beed to migrate to a bigger flash size device:

SofLit_1-1731017308404.png

 

SofLit_0-1731017268619.png

 

To give better visibility on the answered topics, please click "Best answer" on the reply which solved your issue or answered your question.
    kalpakniraleAuthor
    Associate II
    November 7, 2024

    Yea but the freejoy file size is 155kb 

    Even 128kb will not suffice 

    mƎALLEm
    mƎALLEm
    ST Technical Moderator
    November 7, 2024
    @kalpaknirale wrote:

    Yea but the freejoy file size is 155kb 

    Even 128kb will not suffice 

    This is the size of the hex file need to convert it to bin format to know the real size of the application. If it exceeds 64kB there is no other solution than migrating to bigger flash size device of 128kB as I explained previously.

    To give better visibility on the answered topics, please click "Best answer" on the reply which solved your issue or answered your question.
      Terms & ConditionsAccessibility statement