https://devzone.nordicsemi.com/f/nordic-q-a/95564/nrf52840-spi-strange-data-received-in-spisHi, I tried to run peripheral spi / spis examples on Nrf52840 with sdk 17.1.0 However I had problems with receiving data from master. I expected to get &quot;Nordic&quot; every 200ms, but buffer was fiiled with different data. Buffer data is not totallyen-USTelligent Community 13Thu, 12 Jan 2023 17:09:42 GMThttps://devzone.nordicsemi.com/thread/404641?ContentTypeID=1Thu, 12 Jan 2023 17:09:42 GMT137ad170-7792-4731-bb38-c0d22fbe4515:0c3b93f0-842b-4aea-8527-1bdb6de79b7dJ&#248;rgen Holmefjord<p>Hi,</p> <p>Have you checked the receive buffer with a debugger, to see if the data is corrupted when received by SPIS, or if it is during the logging that the data gets corrupted? Do you log over UART or RTT?</p> <p>Did you check the SPI signals with a logic analyzer, to see if the data being sent from the master is correct?</p> <p>If you have bad connection between the master and slave, you might need to increase the drive strength of the pins by calling&nbsp;<a href="https://github.com/NordicSemiconductor/nrfx/blob/v1.9.0/hal/nrf_gpio.h#L524">nrf_gpio_cfg</a><span>() with drive parameter set to&nbsp;(</span><a href="https://infocenter.nordicsemi.com/topic/sdk_nrf5_v17.0.2/group__nrf__gpio__hal.html#ggabb86c9557487ac1eda0cec28f258a725aae4d4424759f4afd546132ac8b2b22d1">NRF_GPIO_PIN_H0H1</a><span>) after spi_init.</span></p> <p>Best regards,<br />Jørgen</p><div style="clear:both;"></div>