what&#39;s the difference between spi_w5_master and nrf_drv_spi on SDK10https://devzone.nordicsemi.com/f/nordic-q-a/12990/what-s-the-difference-between-spi_w5_master-and-nrf_drv_spi-on-sdk10with SDK 10 I found 2 SPI libraries, spi_w5_master and nrf_driv_spi . I hesitate between them. what&#39; the difference between them? and what should I use when I&#39;m using app_timer ???en-USTelligent Community 13Tue, 05 Apr 2016 09:13:14 GMTRE: what's the difference between spi_w5_master and nrf_drv_spi on SDK10https://devzone.nordicsemi.com/thread/49502?ContentTypeID=1Tue, 05 Apr 2016 09:13:14 GMT137ad170-7792-4731-bb38-c0d22fbe4515:08439d17-c6dd-4779-8342-17daeed49ff5bjorn-spockeli<p>The <code>spi_w5_master</code> driver is a 5-Wire SPI driver, i.e it uses an additional data line for flow control.</p> <p>The <code>nrf_drv_spi</code> driver is the standard 4-Wire SPI driver and I recommend using this as this driver is better documented, see <a href="http://infocenter.nordicsemi.com/topic/com.nordic.infocenter.sdk51.v10.0.0/hardware_driver_spi_master.html?cp=4_0_1_2_7_1#spi_master_using">this</a> page on our Infocenter.</p> <p>-Bjørn</p><div style="clear:both;"></div>