Nordic UART Service Project for BLE Communication between nRF52833 and ESP32

Getting Started

Prerequisites

• Download SEGGER from here
• Follow this video to install the Espressif IDF VS Code Extension
• Download the nRF5 SDK compatible with your SEGGER version from here

Setup

1. Navigate to your nRF5 SDK path and create a new folder named myexp or any name of your choice:

   cd /your_nrf_sdk_path/examples/myexp

   Note: This repository only includes the SoftDevice for nRF52833. For other PCA numbers, copy the SoftDevice files from the nRF5 SDK and modify the main.c functions accordingly.

2. Clone the repository:

   git clone https://github.com/Mio-Atse/nRF-to-ESP-BLE.git

Flashing nRF52833 with SEGGER

1. Open SEGGER, select "Open Solution" and load the project file:

   myexp/nRF-to-ESP-BLE/pca10100/s113/ses/ble_app_uart_pca_10100_s113.emProject

2. Build the project and flash it to the nRF52833 using the "Connect J-Link" and "Download" options.

3. Use JlinkRTT Viewer to monitor the USB serial port and ensure the flashing process is successful.

Flashing ESP32 with VSCode

1. Open the folder:

   myexp/nRF-to-ESP-BLE/spp_client

2. In the bottom section, select your ESP device and type. Then, run >menuconfig from the VSCode command palette.

3. Click on "Build, Flash and Monitor" from the menu.

4. If connected correctly, you should see the following log in the terminal:

   I (3411) NimBLE: Successfully subscribed to notifications

Usage

• Press 1 or 2 to switch between data transmitted from nRF52833 to ESP32.
• Modify the main.c file on the nRF52833 according to your data transmission needs.
• The last data sent from nRF52833 can be saved to ESP Flash NVM and observed in terminal logs after a reset.