https://devzone.nordicsemi.com/f/nordic-q-a/21790/sdk-13-0-s132-ram-sizeWhat is the correct RAM size that should be reserved for S132 v4.0.2 shipped with SDK 13.0? Looks like linker scripts for different projects reserve different amount of RAM: 0x1fc0 in examples\ble_peripheral\ble_app_gls\pca10040\s132\armgcc\ble_app_gls_gcc_nrf52en-USTelligent Community 13Thu, 04 May 2017 07:20:12 GMThttps://devzone.nordicsemi.com/thread/85606?ContentTypeID=1Thu, 04 May 2017 07:20:12 GMT137ad170-7792-4731-bb38-c0d22fbe4515:e35619ef-a5e5-4eca-bf21-b76a4c1e0235bjorn-spockeli<p>Hi Ivan,</p> <p>the RAM requirement of the SoftDevice is dependent on the configuration you enable it with, e.g. the number of concurrent peripheral/central links, the number of services/characteristics/descriptors(size of the attribute table) and the enabled security features. See <a href="http://infocenter.nordicsemi.com/topic/com.nordic.infocenter.s132.sds/dita/softdevices/s130/mem_usage/mem_usage.html?cp=2_3_0_0_13">this</a> page in the S132 v4.0.2 Product Specification for more information.</p> <p>The SoftDevice will return the minimum start address of the application RAM region required by the SoftDevice for the given configuration when you call the <a href="http://infocenter.nordicsemi.com/topic/com.nordic.infocenter.s132.api.v4.0.2/group___b_l_e___c_o_m_m_o_n___f_u_n_c_t_i_o_n_s.html#ga8a92420df90945526d4c89d09486508d">sd_ble_enable</a> function to enable the SoftDevice in the app_ram_base variable. The value of app_ram_base will be printed on the UART/RTT if you have logging enabled. You can also open a debug session, set a breakpoint after the in softdevice_enable(ble_enable_params_t * p_ble_enable_params) function in softdevice_handler.c and examine the value of app_ram_base that way.</p> <p>Best regards</p> <p>Bjørn</p><div style="clear:both;"></div>