cannot-read-max30003wing-board-using-spi-communicationhttps://devzone.nordicsemi.com/f/nordic-q-a/80822/cannot-read-max30003wing-board-using-spi-communicationThis discussion has been locked. I don&#39;t know why? and I don&#39;t know how to get it back. devzone.nordicsemi.com/.../cannot-read-max30003wing-board-using-spi-communication so, I made new discussion. sorry about that. The answer to the last questionen-USTelligent Community 13Wed, 27 Oct 2021 02:28:26 GMTRE: cannot-read-max30003wing-board-using-spi-communicationhttps://devzone.nordicsemi.com/thread/336076?ContentTypeID=1Wed, 27 Oct 2021 02:28:26 GMT137ad170-7792-4731-bb38-c0d22fbe4515:af684d70-9f25-4ce9-887a-be4f99a4b78eray<p>Sorry, reply too late.</p> <p>&quot;analog input&quot; mean is oscilloscope?</p> <p>it is same result, not work well.</p> <p>We&#39;ll be making our own boards on next week. and then We will post the results.</p> <p>thank you</p> <p><span>Regards,</span></p> <p>ray</p><div style="clear:both;"></div>RE: cannot-read-max30003wing-board-using-spi-communicationhttps://devzone.nordicsemi.com/thread/334884?ContentTypeID=1Tue, 19 Oct 2021 12:59:15 GMT137ad170-7792-4731-bb38-c0d22fbe4515:b29bec6e-c01d-49e8-8532-41f19e543e67Kenneth<p>Can you try to measure with analog input instead of digitial? Is it possible that you are calling multiple&nbsp;nrf_drv_spi_transfer() without CSN toggling inbetween?</p> <p>Kenneth</p><div style="clear:both;"></div>