https://devzone.nordicsemi.com/f/nordic-q-a/22570/lpcomp-comp-problem-of-nrf52832Hi I&#39;m working on detecting voltage change direction(up or down) by using LPCOMP or COMP. LPCOMP initiates as following settings: detection: NRF_LPCOMP_DETECT_UP. reference: NRF_LPCOMP_REF_SUPPLY_11_16. Toggle the detection direction in the LPCOMPen-USTelligent Community 13Fri, 09 Jun 2017 05:52:16 GMThttps://devzone.nordicsemi.com/thread/88796?ContentTypeID=1Fri, 09 Jun 2017 05:52:16 GMT137ad170-7792-4731-bb38-c0d22fbe4515:b893109c-2c5b-427b-aad0-b9c2d3e46575bing<p>Yes. I tested using SDK13. It is OK. The problem is nrf_lpcomp_ref_t is wrongly defined in SDK11. NRF_LPCOMP_REF_SUPPLY_1_16 to NRF_LPCOMP_REF_SUPPLY_15_16, they are all the same( LPCOMP_REFSEL_REFSEL_Ref1_16Vdd).</p> <p>Thanks.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/88795?ContentTypeID=1Thu, 08 Jun 2017 12:39:50 GMT137ad170-7792-4731-bb38-c0d22fbe4515:94620ff6-4c96-4fd4-a8af-36c2ae0c14a5FormerMember<p>Do you see the same problem if you test the bare lpcomp example in SDK 11 and SDK 13? (without using the softdevice)</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/88794?ContentTypeID=1Thu, 08 Jun 2017 10:30:43 GMT137ad170-7792-4731-bb38-c0d22fbe4515:f6ec5d42-e2f3-4b61-994c-cb680aff070fbing<p>Sorry. I add the comment to a wrong position.</p> <p>Case 2, my init settings for LPCOMP : direction is NRF_LPCOMP_DETECT_UP and reference is NRF_LPCOMP_REF_SUPPLY_11_16. And in the LPCOMP irq handler, the direction will be changed to an opposite side by doing uninit and re-init. By the way, I am using SDK11 and softdevice is 2.0.0 (S132). Is there any problem? Please correct me if I am wrong. Thanks.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/88792?ContentTypeID=1Thu, 08 Jun 2017 10:27:41 GMT137ad170-7792-4731-bb38-c0d22fbe4515:e5a8e64c-0ffa-4696-a580-c88de6c15d5ebing<p>Hi Kristin,</p> <p>Case 2, my init settings for LPCOMP : direction is NRF_LPCOMP_DETECT_UP and reference is NRF_LPCOMP_REF_SUPPLY_11_16. And in the LPCOMP irq handler, the direction will be changed to an opposite side by doing uninit and re-init. By the way, I am using SDK11 and softdevice is 2.0.0 (S132). Is there any problem? Please correct me if I am wrong. Thanks.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/88793?ContentTypeID=1Wed, 07 Jun 2017 11:26:17 GMT137ad170-7792-4731-bb38-c0d22fbe4515:b3460759-fea5-4e96-b156-188e563511ffFormerMember<p>In case 2, what does your code for setting up the LPCOMP look like?</p><div style="clear:both;"></div>