@@ -47,6 +47,32 @@ Other required libraries, such as **Adafruit_TinyUSB.h**, **TouchScreen.h**, **B
5. Go to **Tools > Board > Board Manager**, search for "Adafruit nRF52" and install **Adafruit nRF52 by Adafruit**.
6. Once installed, select **Adafruit Feather nRF52840 Express** from **Tools > Board** to configure the system.
### Custom Variant Configuration
To ensure the NEST wearable prototype firmware operates correctly on the **Adafruit Feather nRF52840 Express**, the project includes a custom variant configuration. These custom `variant` files define specific pin mappings and settings tailored to the NEST hardware.
#### Steps to Set Up the Custom Variant
1.**Locate the Custom Variant Files in the Repository**:
- In this repository, the custom variant configuration is stored in `variants/feather_nrf52840_express`, which contains two essential files:
-**variant.cpp**: Maps the physical pins to the Arduino pin numbers and sets up board-specific initialization.
-**variant.h**: Defines hardware configurations, such as default pin assignments, ADC settings, and PWM characteristics.
2.**Copy the Custom Variant Files**:
- Copy the entire `feather_nrf52840_express` folder from the repository’s `variants` directory to your Arduino Core’s nRF52840 variant directory.
3.**Paste the Folder in the Arduino Core nRF52840 Variants Directory**:
- Paste the copied folder into the nRF52840 `variants` directory based on your operating system:
- After copying the files, ensure that you have **Adafruit Feather nRF52840 Express** selected as your board in the Arduino IDE.
By following these steps, you will set up the custom pin configurations and board settings necessary for this project.
## Bootloader
The bootloader must be manually flashed. In this repository, you will find the file that needs to be flashed to the nRF52840 in the `/bootloader` directory. Follow the instructions below to flash the bootloader.
