Problem with nrf52832 xxab.

[Sergii]

• I use a development board with nrf52832 xxaa, BLE demo from SDK works. But I created own board but with nrf52832 xxab(less ROM and RAM) and changed configuration in IAR project to xxab mcu and changed size of the RAM and ROM in Linker - it stucks when calls the function:
• https://infocenter.nordicsemi.com/index.jsp?topic=%2Fcom.nordic.infocenter.s132.api.v0.9.0%2Fgroup___n_r_f___s_d_m___f_u_n_c_t_i_o_n_s.html
• Note! My board use external oscillator on 32 MHZ and internal RC on 32kHZ. What should I change in configuration to start to work with internal RC?
• What could a problem? Maybe some guy could share some work example...
• Thanks. 

[Hein]

Have a look at the 

#define NRF_SDH_CLOCK_LF_SRC 1

in your sdk config file

[Sergii]

Hello,

Thank you for your responce, I tried to do it and got an error, but fuction out. I will write the code in 10 minutes

Tried to change 1 to 2:

// <0=> NRF_CLOCK_LF_SRC_RC // <1=> NRF_CLOCK_LF_SRC_XTAL // <2=> NRF_CLOCK_LF_SRC_SYNTH

#ifndef NRF_SDH_CLOCK_LF_SRC

#define NRF_SDH_CLOCK_LF_SRC 2

#endif

The same, but I put in linker file:

/*###ICF### Section handled by ICF editor, don't touch! ****/
/*-Editor annotation file-*/
/* IcfEditorFile="$TOOLKIT_DIR$\config\ide\IcfEditor\cortex_v1_0.xml" */
/*-Specials-*/
define symbol __ICFEDIT_intvec_start__ = 0x0000;
/*-Memory Regions-*/
define symbol __ICFEDIT_region_ROM_start__ = 0x00000;
define symbol __ICFEDIT_region_ROM_end__ = 0x0003FFFF;
define symbol __ICFEDIT_region_RAM_start__ = 0x20000000;
define symbol __ICFEDIT_region_RAM_end__ = 0x20007FFF;
export symbol __ICFEDIT_region_RAM_start__;
export symbol __ICFEDIT_region_RAM_end__;
/*-Sizes-*/
define symbol __ICFEDIT_size_cstack__ = 0x900;
define symbol __ICFEDIT_size_heap__ = 0x800;
/**** End of ICF editor section. ###ICF###*/

define memory mem with size = 4G;
define region ROM_region = mem:[from __ICFEDIT_region_ROM_start__ to __ICFEDIT_region_ROM_end__];
define region RAM_region = mem:[from __ICFEDIT_region_RAM_start__ to __ICFEDIT_region_RAM_end__];

define block CSTACK with alignment = 8, size = __ICFEDIT_size_cstack__ { };
define block HEAP with alignment = 8, size = __ICFEDIT_size_heap__ { };

initialize by copy { readwrite };
do not initialize { section .noinit };

keep { section .intvec };
place at address mem:__ICFEDIT_intvec_start__ { readonly section .intvec };
place in ROM_region { readonly };
place in RAM_region { readwrite,
block CSTACK,
block HEAP };

[Sergii]

do I need to change Linker?

[Hein]

I think you want to change it to 0 (not 2) for RC ?

[Hein]

Yes, if your new chip has less flash and ram, you will definitely have to update the linker file. Should be reasonably straightforward to work out the new sizes.

I would look at the example project linker files to work out the start and size of the flash and ram, then update those for the smaller capacity chip.

[Sergii]

The RAM and ROM in Linker were changed to 256k ROM and 32 kRAM.(in the Linker code which I sent - it's changed)

I  tested with #define NRF_SDH_CLOCK_LF_SRC 0 too, the same(, but I see in asm code, it stucked in handler:
SVC_Handler

For example for xxaa was Linker file:

/*###ICF### Section handled by ICF editor, don't touch! ****/
/*-Editor annotation file-*/
/* IcfEditorFile="$TOOLKIT_DIR$\config\ide\IcfEditor\cortex_v1_0.xml" */
/*-Specials-*/
define symbol __ICFEDIT_intvec_start__ = 0x23000;
/*-Memory Regions-*/
define symbol __ICFEDIT_region_ROM_start__ = 0x23000;
define symbol __ICFEDIT_region_ROM_end__ = 0x7ffff;
define symbol __ICFEDIT_region_RAM_start__ = 0x20001720;
define symbol __ICFEDIT_region_RAM_end__ = 0x2000ffff;
export symbol __ICFEDIT_region_RAM_start__;
export symbol __ICFEDIT_region_RAM_end__;
/*-Sizes-*/
define symbol __ICFEDIT_size_cstack__ = 0x800;
define symbol __ICFEDIT_size_heap__ = 0x200;
/**** End of ICF editor section. ###ICF###*/

define memory mem with size = 4G;
define region ROM_region = mem:[from __ICFEDIT_region_ROM_start__ to __ICFEDIT_region_ROM_end__];
define region RAM_region = mem:[from __ICFEDIT_region_RAM_start__ to __ICFEDIT_region_RAM_end__];

define block CSTACK with alignment = 8, size = __ICFEDIT_size_cstack__ { };
define block HEAP with alignment = 8, size = __ICFEDIT_size_heap__ { };

initialize by copy { readwrite };
do not initialize { section .noinit };

keep { section .intvec };
place at address mem:__ICFEDIT_intvec_start__ { readonly section .intvec };
place in ROM_region { readonly };
place in RAM_region { readwrite,
block CSTACK,
block HEAP };

But when I change the addresses from:

 define symbol __ICFEDIT_region_ROM_end__ = 0x7ffff;->define symbol __ICFEDIT_region_ROM_end__ = 0x3ffff;

and

define symbol __ICFEDIT_region_RAM_end__ = 0x2000ffff;->define symbol __ICFEDIT_region_RAM_end__ = 0x20007fff;

It doesn't start.

[Hein]

In your first linker file, it doesn't seem reasonable that the ROM would start @ 0x00000, What is currently your start address and length for RAM and ROM ? Are you using a Soft Device ? What error is the linker giving you ?