possible chips:
  * nRF52832 is RedBearLabs Nano v2
  * Nordic beacon: NRF51822

GCC:


  * [[https://devzone.nordicsemi.com/tutorials/7/|GCC with Nordic Beacon]]
  * https:%%//%%www.allaboutcircuits.com/projects/ble-using-nrf51-arm-gcc-build-environment/
  * https:%%//%%devzone.nordicsemi.com/blogs/22/getting-started-with-nrf51-development-on-mac-os-x/

misc:


  * [[https://learn.adafruit.com/introduction-to-bluetooth-low-energy/gap|ble primer (adafruit)]]
  * [[http://www.argenox.com/a-ble-advertising-primer/|argenox ble primer]]
  * [[https://www.bluetooth.com/specifications/assigned-numbers/generic-access-profile|BLE specifications of GAP (Generic Access Profile)]]
  * [[https://devzone.nordicsemi.com/tutorials/b/bluetooth-low-energy/posts/ble-central-tutorial|Nordic BLE tutorial]]
  * [[https://www.digikey.com/eewiki/display/Wireless/A+Basic+Introduction+to+BLE+Security|digikey intro to BLE security]]
  * [[http://processors.wiki.ti.com/index.php/BLE_sniffer_guide|sniffer guide]]