Better Luck Eventually

# BLE GAP

This is a school project done with the Make With Ada challenge

https://www.hackster.io/contests/adacore2

## Material

BBC Micro:bit https://microbit.org/.

The nrf Connect application to decompose ble packets.

### Documentation

https://www.bluetooth.com/specifications/bluetooth-core-specification/

## Goal

It was initialy done in order to add a Bluetooth Low Energy stack to

Ada_Driver_Library, unfortunately, we could not make the radio work in

reception mode (Special thanks to Fabien Chouteau who tried to help us).

The main will make a simple BLE advertiser with a name «Ada BLE».

## Logo

The logo is made from the same principle as the Bluetooth logo, with the runic letters for A, D and A.

## Project

We have two submodules that work as layers on the existing BLE module.

### Bluetooth_Low_Energy.Advertising

Allows to make BLE_Packet with the correct payload format specified in the

Bluetooth core specification Vol 3 Part C.

### Bluetooth_Low_Energy.Headers

Allows to make BLE_PDU_Headers with the correct format specified in the

Bluetooth core documentation Vol 6 Part B.

## Cheating

The advertiser module is actually a ripoff off the BLE_Beacon in the

Ada_Driver_Library examples.

## Notes

### Difficulties

- As said in the goal, we couldn't make the radio work in reception mode (It

would stay in Ry_State meaning it would fail to receive a correct preamble:

https://infocenter.nordicsemi.com/pdf/nRF51_RM_v3.0.pdf part 17)

- BLE is a more complex protocol than expected

## Thanks

Thanks to our teachers :

- Raphaël Amiard who has taught us this language

- Eric Perlade who has taught us how to use contracts

- Jose Ruiz who has taught us to never make planes

Again thanks to Fabien Chouteau for his quick response when help was needed.