is pullup required on nrf51822 and nrf52832 when GPIO configured for SPI?https://devzone.nordicsemi.com/f/nordic-q-a/36401/is-pullup-required-on-nrf51822-and-nrf52832-when-gpio-configured-for-spiI am using the sensors LIS2DH12 and the BMP280 in my new design, both of which work on SPI. i will be using both the nrf51822 and the nrf52832 in separate designs with same sensors. i want to understand if external pullups are required to be used in myen-USTelligent Community 13Tue, 18 Sep 2018 07:45:52 GMTRE: is pullup required on nrf51822 and nrf52832 when GPIO configured for SPI?https://devzone.nordicsemi.com/thread/149159?ContentTypeID=1Tue, 18 Sep 2018 07:45:52 GMT137ad170-7792-4731-bb38-c0d22fbe4515:0747a8f1-da15-4205-a854-512306dbc1cehaakonsh<p>Well I cannot help you much with the solder work, but I can review your schematics and layout. You can either share your design files here or open up a new private ticket where you ask for a review and reference this question.&nbsp;</p><div style="clear:both;"></div>RE: is pullup required on nrf51822 and nrf52832 when GPIO configured for SPI?https://devzone.nordicsemi.com/thread/148983?ContentTypeID=1Mon, 17 Sep 2018 09:53:20 GMT137ad170-7792-4731-bb38-c0d22fbe4515:f8a0f395-dcb7-49ac-b5da-665c56442099kiranj<p>ok thanks.</p><div style="clear:both;"></div>RE: is pullup required on nrf51822 and nrf52832 when GPIO configured for SPI?https://devzone.nordicsemi.com/thread/148982?ContentTypeID=1Mon, 17 Sep 2018 09:52:30 GMT137ad170-7792-4731-bb38-c0d22fbe4515:f7ebb39c-b54a-45be-b443-d2f583f1992dcgadgil<p>i am afraid i cannot provide that as it is confidential.&nbsp;But pretty much follow the register settings from the LIS2DH12 datasheet.&nbsp;</p><div style="clear:both;"></div>RE: is pullup required on nrf51822 and nrf52832 when GPIO configured for SPI?https://devzone.nordicsemi.com/thread/148964?ContentTypeID=1Mon, 17 Sep 2018 09:05:50 GMT137ad170-7792-4731-bb38-c0d22fbe4515:0d24d9d6-6d9f-4120-ac66-51f1a650da60kiranj<p>thanx,can you provide instruction set that are you sending to fetch the data from lis2dh12??</p><div style="clear:both;"></div>RE: is pullup required on nrf51822 and nrf52832 when GPIO configured for SPI?https://devzone.nordicsemi.com/thread/148959?ContentTypeID=1Mon, 17 Sep 2018 08:45:37 GMT137ad170-7792-4731-bb38-c0d22fbe4515:a01a962b-de93-453e-bf37-8032bdb3685bcgadgil<p>similar issue with me, i tried buying the lis2dh12 breakout from the ST website and connected to the nordic DK. that one works , but on my custom board it still does not work. i am suspecting some issue with ground or soldering the ic.&nbsp;</p><div style="clear:both;"></div>RE: is pullup required on nrf51822 and nrf52832 when GPIO configured for SPI?https://devzone.nordicsemi.com/thread/148921?ContentTypeID=1Mon, 17 Sep 2018 07:38:35 GMT137ad170-7792-4731-bb38-c0d22fbe4515:4a0c59c1-d718-45f7-a926-fe1ae3a9ce81kiranj<p>hello,I am using nrf51822 with lis2dh12 which works on spi .but I&#39;m not getting any respponese on rx_buf,please could you provide some snippet for this?</p> <p>thanks..</p><div style="clear:both;"></div>RE: is pullup required on nrf51822 and nrf52832 when GPIO configured for SPI?https://devzone.nordicsemi.com/thread/140195?ContentTypeID=1Mon, 16 Jul 2018 12:18:39 GMT137ad170-7792-4731-bb38-c0d22fbe4515:bfadb203-995f-40b5-b4d8-ce1718afa35ahaakonsh<p>You do not need pullups with SPI, is uses the standard push-pull configuration (CMOS).&nbsp;</p><div style="clear:both;"></div>