fstorage in chosen area

RE: fstorage in chosen area

cedric — Fri, 28 Jul 2017 09:49:49 GMT

Hello, the problem was from an other side, and it would be intersting for nordic to have a look at it.

First of all , fs_init() should be call after softdevice initialization, otherwise that won't work, and the callback will never be serviced. I guess this is because of the queue managment, I don't have time to investigate deeper.

Then, and the most important, I had to change the fstorage.c file. fs_erase function always returned FS_ERR_INVALID_ADDR, despite the address was valid.

The test
p_page_addr + (FS_PAGE_SIZE_WORDS * num_pages > p_config->p_end_addr
was always true So I did add a temporary uint32_t variable and wrote the following code :

tmp32 = FS_PAGE_SIZE_WORDS * num_pages + (uint32_t)p_page_addr;
    // Check that the operation doesn't go outside the client's memory boundaries.
    if ((p_page_addr < p_config->p_start_addr) ||
        ((tmp32) > (uint32_t)p_config->p_end_addr))
    {
        return FS_ERR_INVALID_ADDR;
    }

The compiler is Keil µVision 5

RE: fstorage in chosen area

Hung Bui — Wed, 26 Jul 2017 13:20:44 GMT

Yes, I mentioned, I modified the code and can set the start address. It worked. Code I used:

	FS_REGISTER_CFG(fs_config_t fs_config) =
	{
		  .callback  = fs_evt_handler, // Function for event callbacks.
			.num_pages = NUM_PAGES,      // Number of physical flash pages required.
			.priority  = 0xFE,            // Priority for flash usage.
        .p_start_addr = (uint32_t*)0x57000,
        .p_end_addr = (uint32_t*)0x58000
	};

RE: fstorage in chosen area

cedric — Tue, 25 Jul 2017 10:04:49 GMT

Hello, I've comment fs_init during tries, I just forgot to uncomment before posting the code. In the example you gave, you don't control the destination address of the stored data. It's somewhere in the ROM area reserved for peer manager data and some other. I need more space, and as I have a bootloader too, I need to precisely control the ROM address of the stored data.

RE: fstorage in chosen area

Hung Bui — Mon, 24 Jul 2017 11:50:52 GMT

Hi Cedric,

Why did you comment out fs_init() ?

I tested with this example here and able to set the start address, no problem.