nrf52 SPIS max speed when connected to a HUBhttps://devzone.nordicsemi.com/f/nordic-q-a/20683/nrf52-spis-max-speed-when-connected-to-a-hubA brief description of my system: I have a HUB gathering data from the nrf52832 through SPI. The hub is the master and the nrf52832 is the slave. According to the nrf52 specification, the maximum frequency that the SPIS accepts is 8MHz. I have settleden-USTelligent Community 13Fri, 24 Mar 2017 16:18:20 GMTRE: nrf52 SPIS max speed when connected to a HUBhttps://devzone.nordicsemi.com/thread/80684?ContentTypeID=1Fri, 24 Mar 2017 16:18:20 GMT137ad170-7792-4731-bb38-c0d22fbe4515:152ef0bc-750c-447f-87f5-5e35c28a1a79User1321<p>I changed the hub&#39;s SPI, managing manually the Cheap Select pin, making it go low a bit earlier than the clock and now it works fine, no drifting on the bits!! I also transfer my code to the SDK 13.0. Previously I was working with SDK 11.0!</p><div style="clear:both;"></div>RE: nrf52 SPIS max speed when connected to a HUBhttps://devzone.nordicsemi.com/thread/80683?ContentTypeID=1Wed, 22 Mar 2017 12:09:57 GMT137ad170-7792-4731-bb38-c0d22fbe4515:5d7fcfb2-c858-4039-84ed-b4a078ad68ccUser1321<p>Ok great! I will read that! does this explain why it works properly when I connect two nordic uC? One as master and one as slave at 8MHz?</p><div style="clear:both;"></div>RE: nrf52 SPIS max speed when connected to a HUBhttps://devzone.nordicsemi.com/thread/80682?ContentTypeID=1Wed, 22 Mar 2017 12:02:22 GMT137ad170-7792-4731-bb38-c0d22fbe4515:abb484ad-9469-428c-bf97-5cc93f646969J&#248;rgen Holmefjord<p>Hi,</p> <p>It sounds like you could be affected by <a href="http://infocenter.nordicsemi.com/topic/com.nordic.infocenter.nrf52832.Rev1.errata/anomaly_832_109.html?cp=2_2_1_0_1_31">anomalia 109: DMA: DMA access transfers might be corrupted</a>. Could you check if the workaround described in the <a href="http://infocenter.nordicsemi.com/pdf/nRF52_PAN_109_add_v1.1.pdf">PDF document</a> solves the issue?</p> <p>Best regards,</p> <p>Jørgen</p><div style="clear:both;"></div>