How to adjust BLE RAM Settings?

[soumil]

Hi

I am using nrf51-dk board along with the S130. I am getting the following message when I debug my code. The central link count is set to 0 while peripheral link count is set to 1. Do I need to adjust the RAM settings if I have added new custom services and characteristics in ble? How do I adjust the RAM settings?

0> RAM START ADDR 0x20001F00 should be adjusted to 0x20001E00 0> RAM SIZE should be adjusted to 0x6200 0> sd_ble_enable: RAM START at 0x20001F00 0> sd_ble_enable: app_ram_base should be adjusted to 0x20001E00 0> ram size should be adjusted to 0x6200

[Håvard]

Hi soumil.

when debuging, softdevice_enable() will tell you how much RAM the SoftDevice needs. The first 7680 (0x1E00) bytes are needed with your setup.

So in this case, you actually have 100 bytes of gap in the RAM that will not be used by the SoftDevice nor by your application.

You can go to the project options and reduce the ram start address from 0x20001F00 to 0x20001E00. (For Keil the menu is called "Options for Target" under "Project")

Later, if you add more vendor specific services or perhaps more links, the Softdevice will need more RAM and you can use the debug feedback to adjust the project settings accordingly.

[DavidC]

Hallo Havard,

Do you know where I can change the ram settings in Eclipse? i got this warning WARNING:RAM start should be adjusted to 0x200020c8. WARNING:RAM size should be adjusted to 0xdf38.