LPC MicrocontrollersのトピックRe: LPC55Sxx FLASH programming

LPC55Sxx FLASH programming

GrzegorzM — Wed, 01 Jun 2022 08:10:03 GMT

Hello,
I have a question regarding the FLASH API, is it possible to program FLASH memory using the API by sending data to address 0x10000000-0x1003DE00?
If so, some additional configuration has to be done?
I ask because I see that the files I can generate in the SDK (lpcxpresso55sXX_secure_gpio_s) have address 0x10000000. And when I try to write them using the FLASH API, the operation ends with an error.

Thanks,
Grzegorz

Re: LPC55Sxx FLASH programming

Alice_Yang — Wed, 01 Jun 2022 10:36:54 GMT

Hello,

Pay attention , this memory part is secure part.

Do you want to program your image to 0x1000 0000 or just write some data into there by API?

Please describe your detail steps.

Alice

Re: LPC55Sxx FLASH programming

GrzegorzM — Wed, 01 Jun 2022 13:33:07 GMT

Hi @Alice_Yang

I know that this is a secured area.
It wants to upload data using API to address above 0x10000000.
Do I need to configure anything extra?
Does the API disallow writing to an address above 0x10000000?

Thanks
Grzegorz

Re: LPC55Sxx FLASH programming

Alice_Yang — Thu, 02 Jun 2022 09:19:31 GMT

Hello,

Where is your image or application code ? Address?

Re: LPC55Sxx FLASH programming

GrzegorzM — Thu, 02 Jun 2022 09:38:02 GMT

Hi,
Secure code aplication 0x10000000 - 0x10003440.
Non-secure code aplication 0x00010000 - 0x00011080.
I generated the files from the SDK.
Thanks
Grzegorz

Re: LPC55Sxx FLASH programming

Alice_Yang — Mon, 06 Jun 2022 07:44:36 GMT

Hello,

Your application code is from 0x10000000, so flash API can't erase/ program the memory 0x10000000，

try other memory that not used by code.

Alice

Re: LPC55Sxx FLASH programming

GrzegorzM — Mon, 06 Jun 2022 09:27:56 GMT

Hello @Alice_Yang ,
This still didn't answer my question - how to upload my application to address 0x10000000?

Currently writing software for the debugger, it does the following steps:
1. connect to the device via SWD interface
2. upload my firmware to RAM
3. and now I want to write my data-application (which I upload to RAM) to FLASH address 0x10000000 using API. I call the flash_init function first and then flash_program.

Thanks
Grzegorz

Re: LPC55Sxx FLASH programming

Alice_Yang — Tue, 07 Jun 2022 03:59:33 GMT

Hello,

Please share your project,thanks!

Alice

Re: LPC55Sxx FLASH programming

GrzegorzM — Wed, 08 Jun 2022 10:47:29 GMT

I cannot share my project.
I can describe exactly which files I use and what I do.
1. I opened two examples "lpcxpresso55S06_secure_gpio_s" and "lpcxpresso55S06_secure_gpio_ns". After building the project, I generated two code files lpcxpresso55S06_secure_gpio_s.hex (address 0x10000 - 0x11080) and lpcxpresso55S06_secure_gpio_ns.hex (address 0x10000000 - 0x10003440).
2. I started my debbugger and connected to the device using SWD interface.
3. I loaded the firmware into RAM. Then I loaded my data into RAM, which I will later put into FLASH memory.
4. I called flash_iniit and flash_program function with address, size of data to write and current location of data in RAM.
5. Uploading to FLASH from API works without any problem for addresses 0x10000 - 0x11080 , that is for non-secure area. When I want to upload with API the application code to address 0x10000000 - 0x10003440, the API returns an error. "Address or length is outside of addressable memory".

How to make API work also for addresses above 0x10000000?
Thanks
Grzegorz

Re: LPC55Sxx FLASH programming

Alice_Yang — Fri, 10 Jun 2022 10:33:21 GMT

Hello,

You need config the Flash API to secure, detail please refer to:
UM11424 -> Chapter 43: LPC55S0x/LPC550x Trusted Execution Environment

Alice