Sequence Of Ble Events and its responses for beginners in nRF52 SDK Step Wise

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Hi All,

I am a beginner to nRF52 and Nordic Microcontroller, I want to understand the flow of code and its BLE sequences in detail. I am also not proficient in the C language, I need to understand how callbacks are triggered and the meanning of various Macros Like Importing Timer instance module, calling any API from SoftDevice, They Are mostly Passed in SVC() function. Which event will trigger first and so on, basically flow and detailed description? Kindly suggest some good notes and reference links that will clear these things.

Thanks in advance.

[Kenneth]

The nRF5 SDK can be good reading, it describe the various drivers, libraries and modules:
https://infocenter.nordicsemi.com/topic/struct_sdk/struct/sdk_nrf5_latest.html 

Kenneth

[awneil]

The SoftDevice Specifications also contain Message Sequence Charts - which, as the name suggests, show the sequences of messages & events; eg,

https://infocenter.nordicsemi.com/topic/com.nordic.infocenter.s132.api.v7.2.0/s132_msc_overview.html