https://devzone.nordicsemi.com/f/nordic-q-a/16095/estimate-s132-memory-usageI am trying to estimate the memory usage of the s132 v3.0.0 running on a nRF52832. I am interested on acting only as a peripheral with one link at a time only. From app_ram_base.h , I get that: #define APP_RAM_BASE_CENTRAL_LINKS_0_PERIPH_LINKS_1_SEC_COUNT_0_MID_BWen-USTelligent Community 13Thu, 01 Sep 2016 09:10:56 GMThttps://devzone.nordicsemi.com/thread/61372?ContentTypeID=1Thu, 01 Sep 2016 09:10:56 GMT137ad170-7792-4731-bb38-c0d22fbe4515:a38da0c3-8307-412a-882a-6efdf90795d9Hung Bui<p>Hi Genis,</p> <p>App RAM base 0x20001fe8 (8168 bytes) are already included SOFTDEVICE_GATTS_ATTR_TAB_SIZE = BLE_GATTS_ATTR_TAB_SIZE_DEFAULT = 0x580 bytes. This is the input param when you call softdevice_enable()</p> <p>It should fit quite a lot of your service and characterstics. But if you receive NRF_ERROR_NO_MEM when declaring new characteristic or service, you can think of increasing the value of the SOFTDEVICE_GATTS_ATTR_TAB_SIZE when you assign it to p_ble_enable_params-&gt;gatts_enable_params.attr_tab_size before calling softdevice_enable().</p> <p>This will require more RAM for the softdevice and you need to modify the start RAM1 in Keil project setting accordingly.</p><div style="clear:both;"></div>