error repported segger

[lm]

Hello, i'm trying to flash a code in my module nrf52805 thx to my Dk nrf52840. i have this error I followed the instructions here: https://devzone.nordicsemi.com/guides/short-range-guides/b/getting-started/posts/developing-for-the-nrf52805-with-nrf5-sdk  

FLASH_PH_START=0x0

FLASH_PH_SIZE=0x30000

RAM_PH_START=0x20000000

RAM_PH_SIZE=0x6000

FLASH_START=0x15000

FLASH_SIZE=0x15000

RAM_START=0x20000000

RAM_SIZE=0x6000

How can I solve this?

Thank you in advance

[Marte Myrvold]

Hi,

Is your application based on an example, and if so which one? Are you using SoftDevice and/or bootloader in your application? 

The combined MBR and SoftDevice memory requirements of the SoftDevices supported on nRF52805 are as follows:

SoftDevice s112:

• Flash: 100.0 kB (0x19000 bytes).
• RAM: 3.7 kB (0xEB8 bytes). This is the minimum required memory. The actual requirements
  depend on the configuration chosen at sd_ble_enable() time.
• Call stack: The SoftDevice uses a call stack combined with the application. The worst-case
  stack usage for the SoftDevice is 1.8 kB (0x700 bytes). Application writers should ensure that
  enough stack space is reserved to cover the worst-case SoftDevice call stack usage combined
  with the worst-case application call stack usage

SoftDevice s113:

• Flash: 112.0 kB (0x1C000 bytes).
• RAM: 4.4 kB (0x1198 bytes). This is the minimum required memory. The actual requirements
  depend on the configuration chosen at sd_ble_enable() time.
• Call stack: The SoftDevice uses a call stack combined with the application. The worst-case
  stack usage for the SoftDevice is 1.8 kB (0x700 bytes). Application writers should ensure that
  enough stack space is reserved to cover the worst-case SoftDevice call stack usage combined
  with the worst-case application call stack usage.

If you are using a SoftDevice you must make sure that FLASH_START and RAM_START are not lower than the required flash and RAM for the SoftDevice and MBR. So for s112 you would get:

• FLASH_START: 0x19000
• RAM_START: 0x20000EB8

Best regards,

Marte