User's Guide

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nBlue Bluetooth 5.0 Module User’s Guide
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3.2 Debugging
Debugging is done through a two-pin serial wire debug (SWD) interface. A debugger is only needed for
programming/debugging a custom application and is not necessary for using the AT.s command set. If a debugger
is needed a Segger J-Link can be used, or for a more cost-effective option a Nordic PCA10056 nRF52840
development board can be used. The PCA10056 has a J-Link built in and can connect to an external board using its
P19 Debug out header.
J-Link: https://shop-us.segger.com/DebugProbe_s/40.htm
PCA10056: https://www.nordicsemi.com/Software-and-Tools/Development-Kits/nRF52840-DK
4 Evaluation Boards
4.1 BR-MUSB-LE5.0 Mini Dongle
This Dongle provides users with a small, ready to use Bluetooth 5.0 module. It just needs to be plugged into a USB host
port and it’s ready to receive AT commands. The USB CDC ACM virtual serial port is used for serial communication and
LEDs are connected to PIOs 2, 5, 7, and 8. If needed, the firmware can be updated using nBlue Programmer.
Layout:
• Green LED- PIO5 Radio Status
• Blue LED – PIO2 Connection Status
• Orange LED – PIO7 Sleep Status
• Red LED – PIO8 AT Command received
• Debug Header – SWDIO, SWDCLK, UART_RX, UART_TX, PIO3, PIO4, PIO14, and Reset
• Header – PIO34, PIO39, PIO12, PIO43
• SW1 (optional) – Push Button, PIO4 or PIO14 depending on R8/R9 jumper position
• U2 (optional) – TMP112 Texas Instruments Temperature Sensor