leading flash page before main app - run & debug

andreasschnitze — Thu, 13 Oct 2016 14:42:36 GMT

Hi,

Platform: LPC15 & LPCexpresso 8.2.2

a bootloader managed application will run from a start address 0x2100 (this works fine).

For transmitting a new image later, a leading page of 256 Bytes (or less) with information’s like Version Number etc. should be added.

To avoid to begin with own linker scripts I did the following:

In main.c:

Flash2 data only a test with a string for now
CRP-disabled

...

__attribute__ ((used, section(".rodata.$Flash2"))) static const char version[] = "Version01";

int main(void) {

SCB->VTOR = 0x2100; //needed to directly debug this app (mcu setting is start @0x2100)

__enable_irq(); //bootloader jump diabled isr

volatile char* version_ = (volatile char*) version; //__attribute__ ((used,...above is not working so this.

...

the generated binary looks like:

Adjusted the debugger cfg:

(tried also with std main)

The debugger failed to run this setup

(Unable to retrieve disassembly data from backend and other errors)

Any suggestions whats wrong or missing?

Thanks

Andreas

Re: leading flash page before main app - run & debug

soledad — Wed, 23 Nov 2016 22:14:21 GMT

Hello,

Please check the below threads and let me know if this helps.

Placing code/rodata into different FLASH blocks

Placing data at an address

https://community.nxp.com/thread/389100

Have a great day,
Sol

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topic Re: leading flash page before main app - run & debug in LPC Microcontrollers

leading flash page before main app - run & debug

Re: leading flash page before main app - run & debug