https://devzone.nordicsemi.com/f/nordic-q-a/7616/spi-hardfaultHi, with this SPI init code: spi_master_config_t spi_config = { \ SPI_FREQUENCY_FREQUENCY_K125, /**&lt; Serial clock frequency 125k. */ \ 1, /**&lt; SCK pin . */ \ 2, /**&lt; MISO pin . */ \ 3, /**&lt; MOSI pin . */ \ 4, /**&lt; Slave select pin . */ \en-USTelligent Community 13Wed, 13 Jan 2016 20:32:41 GMThttps://devzone.nordicsemi.com/thread/27158?ContentTypeID=1Wed, 13 Jan 2016 20:32:41 GMT137ad170-7792-4731-bb38-c0d22fbe4515:da537f3a-a75c-4652-98ab-64ec6f33f49emichalmmz<p>I have the same problem. @gaminn did you solve it? Showed up when I started work with SD. Any idea?</p><div style="clear:both;"></div>