Predefinitions for nrf52840

Question

Hello, 
 I saw that in nrf52_erratas.h. 
 This Macro must be ebabled for the functions to be enabled: NRF52_SERIES. 
 Also, there are other macros in the file such as: 
 #if defined (NRF52805_XXAA) || defined (DEVELOP_IN_NRF52805)\ || defined (NRF52810_XXAA) || defined (DEVELOP_IN_NRF52810)\ || defined (NRF52811_XXAA) || defined (DEVELOP_IN_NRF52811)\ || defined (NRF52820_XXAA) || defined (DEVELOP_IN_NRF52820)\ || defined (NRF52832_XXAA) || defined (DEVELOP_IN_NRF52832)\ || defined (NRF52832_XXAB) || defined (DEVELOP_IN_NRF52832)\ || defined (NRF52833_XXAA) || defined (DEVELOP_IN_NRF52833)\ || defined (NRF52840_XXAA) || defined (DEVELOP_IN_NRF52840) 
 
 I geus relevant to me are: 
 1. DEVELOP_IN_NRF52840 
 2. DEVELOP_IN_NRF52840 
 3. NRF52_SERIES 
 
 I am using NRF52840. 
 which of the above macros must be enabled and where (sdk_config.h)? 
 
 Thanks, 
 Alon Barak 
 Qcore Medical

awneil · Answer

The DEVELOP_IN_NRF52840 macro is used when using an nRF52840 to "emulate" some different chip; eg, see: 
 https://infocenter.nordicsemi.com/topic/com.nordic.infocenter.sdk5.v15.3.0/nrf52811_user_guide.html 
 So you don't need it if you're using an actual nRF52840. 
 The best way to correctly set up a Project is to take one of the examples from the SDK as your starting point ...