https://devzone.nordicsemi.com/f/nordic-q-a/48378/base-address-of-spim-instanceHow the base address is assigned to NRF_SPIM_TYPE structure through *p_reg which is in nrfx_spim_t structure?, and also please let me know what is the default base address for structure.en-USTelligent Community 13Tue, 11 Jun 2019 17:48:35 GMThttps://devzone.nordicsemi.com/thread/192157?ContentTypeID=1Tue, 11 Jun 2019 17:48:35 GMT137ad170-7792-4731-bb38-c0d22fbe4515:db25a74e-60e8-43c4-a7ef-b7b159cf0f54&#216;yvind<p>Hello,&nbsp;</p> <p>[quote][/quote]</p> <p><span>How the base address is assigned to NRF_SPIM_TYPE structure through *p_reg which is in&nbsp;nrfx_spim_t structure?</span></p> <p><br />The <a href="https://infocenter.nordicsemi.com/topic/com.nordic.infocenter.sdk5.v15.3.0/group__nrf__spim__hal.html?resultof=%22%4e%52%46%5f%53%50%49%4d%5f%54%59%50%45%22%20">SPIM HAL</a> is documentented in the SDK documentation, with nrf_spim_t struct reference <a href="https://infocenter.nordicsemi.com/topic/com.nordic.infocenter.sdk5.v15.3.0/structnrfx__spim__t.html?resultof=%22%4e%52%46%5f%53%50%49%4d%5f%54%59%50%45%22%20">here</a>. The NRF_SPIM_TYPE struct is defined&nbsp;in&nbsp;\modules\nrfx\mdk\nrf52.h.<br /><br />I suggest looking at the SPIM example that is included in <a href="https://infocenter.nordicsemi.com/topic/com.nordic.infocenter.sdk5.v15.3.0/nrfx_spim_example.html?cp=5_1_4_6_38">\examples\peripheral\nrfx_spim\</a>&nbsp;which shows how to initiate SPIM.</p> <p>&nbsp;</p> [quote user=""]please let me know what is the default base address for structure[/quote] <p>&nbsp;For SPIM the default address is found in the product specifications <a href="https://infocenter.nordicsemi.com/topic/com.nordic.infocenter.nrf52832.ps.v1.1/memory.html?cp=3_1_0_7_2#memorymap">memory map</a>, in your case this is <span><strong>0x40003000</strong></span>&nbsp;for SPIM0,&nbsp;<span><strong>0x40004000</strong>&nbsp;for SPIM1 or&nbsp;<strong>0x40023000&nbsp;</strong>for SPIM2.</span></p> <p><span>Hope this helps!</span></p> <p><span>Kind regards,<br />Øyvind</span></p><div style="clear:both;"></div>