NINA-B1 series - Getting Started
UBX-16009942 - R04 Evaluation board
Page 11 of 19
3 Evaluation board
The evaluation board for NINA-B1 is EVK-NINA-B1.
3.1 LED indications and buttons
There are two operational buttons (SW1 and SW2) and one multi LED (DS9), as shown in Figure 9.
Figure 9: EVK-NINA-B1 Evaluation board
The LED indicates what mode is currently active and what activity is currently in progress. The following color
indications are used. See EVK-NINA-B1 User Guide [3] for more information about the EVK-NINA-B1.
• Green: The current mode is data mode and no connection attempts are in progress.
• Orange: The current mode is command mode.
• Purple: A connection attempt is in progress.
• Blue: A connection is currently active.
• Blue Blinking: A connection is active and data is transmitted or received over air.
• Red Blinking: Error detected. Typically, this means buffer overflow, parity or framing error detected on
the UART.
The LED on the evaluation board is a 3-colour LED, which means that, on the module, it
corresponds to three IO pins.
3.2 Restore default serial settings
If the SW2 button is pressed during power on, the module resets the serial settings and escape sequence to the
default values.
• Default serial settings is 115.2 kbps, 8N1 and HW flow control enabled
• Default escape sequence is +++
• Default escape sequence timing is 1s silence before and after the escape sequence
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