ram resource requirements

Question

dear all， 
 I want to know how to estimate ram of softdevice use. 
 For example, as a central, how much ram will be required when adding a custom ble service, 
 and how much ram will be required when adding support for one more connection.

Hung Bui · Accepted Answer

Hi delay_7, 
 You can find out the RAM required for the softdevice by looking at the p_app_ram_base that's output from the sd_ble_enable() function. You can see this in the description of sd_ble_enable() function: 
 * @param[in, out] p_app_ram_base Pointer to a variable containing the start address of the application RAM region (APP_RAM_BASE). On return, this will contain the minimum start address of the application RAM region required by the SoftDevice for this configuration. 
 
 What you can do is to printout p_app_ram_start after sd_ble_enable() call in nrf_sdh_ble_enable() in nrf_sdh_ble.c. Similar to what we do here when the ram on configured for the softdevice is not sufficient:

ram resource requirements

Top Replies