GCC generated HEX not working (ble_app_uart)

[VS60]

Hi.

I am on compiling business now. Last days i tried to do GCC compiling and quite go well. But as always on last part i find an error.

My process:

1. Wrote code on keil. Compiled on GCC with MSYS on Windows. (I have hex file now)
2. Edited makefile with path, lib etc. (added spi_master)
3. I turned an ST-Link V2 programmer to J-Link Programmer.
4. Opened NRFGo Studio and programmed the Softdevice to the flash.
5. try to burned application (.hex file) to the flash. It is okey also.

6. Nothing Works.

I think maybe something wrong with linker file and i tried my another code which dont have soft device. I edited linker file ( RAM Length 6000 --> 2000) and program it to the flash. BUM. It has worked very well. But my main program which has softdevice does not work with this linker.

So I think my problem is linker memory areas. i have nrf51822aa version on my chip i think. (Beacon module)

Can somebody help me with RAM area arrangements ? (ble_app_uart examples which i am using)

Linker File

/* Linker script to configure memory regions. */

SEARCH_DIR(.)
GROUP(-lgcc -lc -lnosys)

MEMORY
{
  FLASH (rx) : ORIGIN = 0x1c000, LENGTH = 0x24000
  RAM (rwx) :  ORIGIN = 0x20002800, LENGTH = 0x5800
}

INCLUDE "gcc_nrf51_common.ld"

UPDATE : Correct Adress Map for S130 SDK8.1 Ble_app_uart Example (in Linker File)

MEMORY
{
  FLASH (rx) : ORIGIN = 0x1c000, LENGTH = 0x24000
  RAM (rwx) :  ORIGIN = 0x20002800, LENGTH = 0x1800
}

This is worked for me. Cheers. (Thanks to Sigurd)

[Nicolas Brunner]

Did you check the NRF_LOG output (RTT or UART) ? If the RAM parameters are wrong, a message will be logged with the correct values to use.

[Nguyen Hoan Hoang]

The linker memory settings depend on which SDK/Softdevice you are using. For SDK12 the settings bellow works. RAM start may need to be adjusted depending on your softdevice configuration usage (paripheral count, central count, custom uuids, ...).

MEMORY { FLASH (rx) : ORIGIN = 0x18000, LENGTH = 0x28000 RAM (rwx) : ORIGIN = 0x20002000, LENGTH = 0x2000 }

[VS60]

I am using SDK 8.1 now. I tried "RAM (rwx) : ORIGIN = 0x20002000, LENGTH = 0x2000" part but does not work sadly :/

[VS60]

I never tried to use RTT debugging method. Can i use that with only SWD connection with ST-Link V2(which is converted to J-Link) ??

[Nicolas Brunner]

I think it will be better to use UART in your case, you need to define in sdk_config.h NRF_LOG_BACKEND_SERIAL_USES_UART at 1 and set the pins you want for UART.