https://devzone.nordicsemi.com/f/nordic-q-a/15466/spi-frequency-125k-freezes-nrf51822Why does SPI frequency of 125k freezes my nrf51822 and a frequency of 4M makes it run normal ?en-USTelligent Community 13Tue, 02 Aug 2016 08:45:34 GMThttps://devzone.nordicsemi.com/thread/59067?ContentTypeID=1Tue, 02 Aug 2016 08:45:34 GMT137ad170-7792-4731-bb38-c0d22fbe4515:5ff7b746-6b63-490d-b103-cc9fcffe233eRobert<p>Hello ! I got it to work. It was my bad, sorry !! I waited for a boolean value that never changed.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/59066?ContentTypeID=1Mon, 01 Aug 2016 12:49:13 GMT137ad170-7792-4731-bb38-c0d22fbe4515:3075a669-0050-445d-bad0-b2fb026ed282Robert<p>And to add more info, I am using s130</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/59065?ContentTypeID=1Mon, 01 Aug 2016 12:47:15 GMT137ad170-7792-4731-bb38-c0d22fbe4515:b58dc95b-62f8-4a8b-83b4-e860e696bc9eRobert<p>The only case when it doesn&#39; t freeze is when I use 4M frequency for the SPI. All other frequency setups make the chip to halt.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/59064?ContentTypeID=1Mon, 01 Aug 2016 12:27:21 GMT137ad170-7792-4731-bb38-c0d22fbe4515:f14245ac-d64a-4821-8ab1-284c6985fc49Robert<p>It starts advertising, but when I try to connect to it, it seems that it is stuck in some kind of some loop from which it does not exit. I cannot access it&#39;s services and read characterists. It just keeps loading when I press the connect button on the nrf Master Control Panel app.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/59063?ContentTypeID=1Mon, 01 Aug 2016 11:59:49 GMT137ad170-7792-4731-bb38-c0d22fbe4515:f1e290b4-1bf4-4983-86c1-9495db1c8d70Robert<p>I don&#39;t know this. I found no reference to any app_fault_handler. What is this ? I googled it and found nothing.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/59062?ContentTypeID=1Mon, 01 Aug 2016 11:17:05 GMT137ad170-7792-4731-bb38-c0d22fbe4515:196164a9-1117-4840-a7bd-d674002ed446Susheel Nuguru<p>what do you mean by freezes? does it get stuck in app_fault_handler?</p><div style="clear:both;"></div>