https://devzone.nordicsemi.com/f/nordic-q-a/602/pheripheral-accessible-while-bluetooth-stack-s-enabledHi Is timer ,gpio ,and spi pheripherals are accessible while bluetooth stack is enabled. and if it is yes , these are directly accessible or we need to use soft device api. and what are sd api we need to use to access. Regards Balajien-USTelligent Community 13Mon, 07 Oct 2013 09:44:09 GMThttps://devzone.nordicsemi.com/thread/3131?ContentTypeID=1Mon, 07 Oct 2013 09:44:09 GMT137ad170-7792-4731-bb38-c0d22fbe4515:9946fbe0-6da4-49f4-95ad-e81d0f43d6dbbalaji<p>Thanks Hung Bui,</p> <p>It helps to me. one more question kindly suggest me.</p> <p>I want create 4k buffer, for reading and storing the accelerometer data in nordic RAM. how to protect this buffer so that it will not corrupt by other threads in program.</p> <p>In my case Bluetooth is always on.</p> <p>Regards Balaji</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/3130?ContentTypeID=1Mon, 07 Oct 2013 09:06:29 GMT137ad170-7792-4731-bb38-c0d22fbe4515:4d068c78-19dc-4df4-9a42-e56af6c7d62fHung Bui<p>Hi Balaji, You can find the list of blocked and restricted system resource in the S110 Specification at chapter 6.</p> <p>You can download the Specification in the nRF51822 page - download tab - Product Specification - Click on Expand list.</p><div style="clear:both;"></div>