Migrating to SDK17.0.2 gives Memory issue in NRF52840 development kit.

[sne_333]

Hi,

 I am migrating my project from SDK15 to SDK 17.0.2. I am using NRF52840 development kit and using s140 softdevice for bluetooth services. When I load the softdevice hex file and later load the Firmware hex file, I am getting memory error as follows:- 

<warning> nrf_sdh_ble: Insufficient RAM allocated for the SoftDevice.
<warning> nrf_sdh_ble: Change the RAM start location from 0x20002220 to 0x20002B 88.
<warning> nrf_sdh_ble: Maximum RAM size for application is 0x3D478.
<error> nrf_sdh_ble: sd_ble_enable() returned NRF_ERROR_NO_MEM.
<error> app: ERROR 4 [NRF_ERROR_NO_MEM] at ..//ble/ble_app.c:369

How to solve this error??

The code was working fine with sdk15 version. My linker file has this configuration..

MEMORY
{
FLASH (rx) : ORIGIN = 0x26000, LENGTH = 0x5a000
RAM (rwx) : ORIGIN = 0x20002220, LENGTH = 0xDDE0
}

[sne_333]

Hi Karl,

           I have solved the issue Karl :D 

I adjusted the memory config and did some changes in sdk_config.h. I guess the problem was solved in step 3,4 but because of wrong configuration in sdk_config.h, logs were not seen on RTT viewer.

This is my memory configuration:-

MEMORY
{
FLASH (rx) : ORIGIN = 0x27000, LENGTH = 0xD9000
RAM (rwx) : ORIGIN = 0x20002BF0, LENGTH = 0x3D410
}

Though i dont understand what was blocking the logs.

[Karl Ylvisaker]

sne_333 said:

I have solved the issue Karl :D 

Fantastic, I am happy to hear that Snehal :D 
Well done!

sne_333 said:

I guess the problem was solved in step 3,4 but because of wrong configuration in sdk_config.h, logs were not seen on RTT viewer.

sne_333 said:

Though i dont understand what was blocking the logs.

Did you do the disabling of logger UART backend, like I suggested in my previous comment? 

sne_333 said:

This is my memory configuration:-

MEMORY
{
FLASH (rx) : ORIGIN = 0x27000, LENGTH = 0xD9000
RAM (rwx) : ORIGIN = 0x20002BF0, LENGTH = 0x3D410
}

Thank you for sharing what the final memory configuration should be.

Best regards,
Karl