nRF52: using SPI slave causing poor BLE throughputhttps://devzone.nordicsemi.com/f/nordic-q-a/18454/nrf52-using-spi-slave-causing-poor-ble-throughputI&#39;m using the nRF52+SDK11.0.0+s132. I&#39;m developing a system that streams BLE notifications to an Android app at ~53kbps (40B/6ms). I have the connection intervals set to 7.5ms. When the data is ready, I call sd_ble_gatts_hvx() twice with two 20B buffersen-USTelligent Community 13Thu, 29 Aug 2024 08:22:26 GMTRE: nRF52: using SPI slave causing poor BLE throughputhttps://devzone.nordicsemi.com/thread/500367?ContentTypeID=1Thu, 29 Aug 2024 08:22:26 GMT137ad170-7792-4731-bb38-c0d22fbe4515:06541264-5f88-44cd-a4d5-6be3b1a575daSusheel Nuguru<p>This is very old thread Stefano, can you please open a new one with details on your setup and details on the issue.&nbsp;</p><div style="clear:both;"></div>RE: nRF52: using SPI slave causing poor BLE throughputhttps://devzone.nordicsemi.com/thread/500256?ContentTypeID=1Wed, 28 Aug 2024 15:46:06 GMT137ad170-7792-4731-bb38-c0d22fbe4515:2fcc9bed-2353-4f18-9374-fb7fa4fe1638Ste_<p>Hi,&nbsp;</p> <p>I have a similar problem with my project. Do you solved it?</p> <p></p> <p>Thanks in advance,&nbsp;</p> <p>Regards.&nbsp;</p><div style="clear:both;"></div>RE: nRF52: using SPI slave causing poor BLE throughputhttps://devzone.nordicsemi.com/thread/71209?ContentTypeID=1Mon, 19 Dec 2016 10:02:41 GMT137ad170-7792-4731-bb38-c0d22fbe4515:6c0db12e-b6a7-457c-b44f-75e6794f8d72run_ar<p>Which chip variant are you using? which pins are you using for SPI? What spi baudrate do you have? Have you routed the SPI lines anywhere close to radio or crystal lines / components?</p> <p>Maybe you could try to enable radio notifications and start the SPI transfer on NRF_RADIO_NOTIFICATION_TYPE_INT_ON_INACTIVE?</p><div style="clear:both;"></div>