https://devzone.nordicsemi.com/f/nordic-q-a/21382/softdevice-132-sdk-11-enter-exit-nvic-critical-regionHello, I would like to ask your help for examples of nRF52 code, when entering and exiting critical regions (disabling interrupts without switching off a bluetooth connection) like: sd_nvic_critical_region_enter(); //code to execute sd_nvic_critical_region_exiten-USTelligent Community 13Tue, 18 Apr 2017 09:43:53 GMThttps://devzone.nordicsemi.com/thread/83802?ContentTypeID=1Tue, 18 Apr 2017 09:43:53 GMT137ad170-7792-4731-bb38-c0d22fbe4515:acf6a09e-09bc-41f1-81f5-318ab5413ad5bjorn-spockeli<p>Hi Jimmy,</p> <p>the <code>p_is_nested_critical_region</code> is an output parameter, not an input , please see the documentation of the SoftDevice NVIC public functions, found <a href="http://infocenter.nordicsemi.com/topic/com.nordic.infocenter.s132.api.v3.0.0/group___n_r_f___n_v_i_c___f_u_n_c_t_i_o_n_s.html#ga3cb70a461e2e1421bd812c5c0d5ad0c0">here</a>.</p> <p>If you call <code>sd_nvic_critical_region_enter</code> within another critical region, then <code>p_is_nested_critical_region</code>is set to 1.</p> <p>If you&#39;re not using nested critical regions then just provide a uint8_t pointer as a parameter and ignore the output.</p><div style="clear:both;"></div>