Change Address STM32F722 Program

Question

I'm very inexperienced in STM32 programming and want to ask about firmware installment with ST-Link-Utility. I've a flight controller that must be flashed with custom firmware. The firmware provided by developer now is compiled as hex file and has starting address at 0x8008000. I need to change it's starting address to 0x2000000.

Is there any possibilities to do this, without modify source code of the hex file? What I need to do first in this case?

0x8'000'000 is the start of flash memory. Developer places it with 32 KiB offset, probably because he has some bootloader mechanism. 0x20'000'000 is the start of RAM but you can't have any data there permanently. And 0x2'000'000 you have mentioned is an invalid address. — Tagli, Feb 08 '21 at 08:33
Where is this requirement of changing the starting address coming from? Developer? — A.R.C., Feb 08 '21 at 09:28
Maybe you can share the website of the developer of this custom firmware so we can take a look? — Tagli, Feb 08 '21 at 12:01

score 2 · Answer 1 · answered Feb 08 '21 at 09:41

The firmware provided by developer now is compiled as hex file and has starting address at 0x8008000. I need to change it's starting address to 0x2000000.

This is not possible without recompiling / linking.

For example the controller must know where to find the vector table. And the position is defined somewhere in the hex.

score 0 · Answer 2 · answered Feb 08 '21 at 07:40

0

I hope I got what you said. With ST-Link-Utility you can easily change offset of Flash Address this way:

Check that and let me know.

answered Feb 08 '21 at 07:40

Ali Esmailpor

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Thanks for your answer. In this case I need to move then content of the address 0x8000000 to 0x2000000 (sorry, but I don't know if that's possible or not in STM32 programming) – rajadaudz Feb 08 '21 at 07:50
Let me know. You have a `Hex` file and a STM32 Microcontroller? The tutorial said you have to program the `STM32` from `0x02000000` Address? – Ali Esmailpor Feb 08 '21 at 07:54
Yes, something like that. – rajadaudz Feb 08 '21 at 07:56
Look at the picture and red aria that I mentioned. After that you opened your `HEX` file you can easily change the value of `Address` field. – Ali Esmailpor Feb 08 '21 at 08:02
Then select `Target > Connect` and after that select `Target > Program`. – Ali Esmailpor Feb 08 '21 at 08:04
I got Warning Address out of range – rajadaudz Feb 08 '21 at 08:05
In addition, I've never changed my Flash Address to 0x02000000 before. I think it's a invalid Address. – Ali Esmailpor Feb 08 '21 at 08:06
Are you sure the tutorial said that? – Ali Esmailpor Feb 08 '21 at 08:06
Yes, I got this answer after some discussion. – rajadaudz Feb 08 '21 at 08:11
Which STM32 Microcontroller do you have? – Ali Esmailpor Feb 08 '21 at 08:16
It's STM32F722. – rajadaudz Feb 08 '21 at 08:28
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I think your address (0x02000000) is invalid. You have to be sure about that. – Ali Esmailpor Feb 08 '21 at 08:50

Change Address STM32F722 Program

2 Answers2