EZRadioPRO-DK

Rev. 0.5

7

5.1. The Wireless Motherboard

Figure 4. Wireless Motherboard

The wireless motherboard contains four pushbuttons, four LEDs, and a buzzer as simple user interfaces. A

graphical LCD displays menu items for range testing purposes and a potentiometer demonstrates analog

capabilities of the MCU. A switch supports the power options of the MCU's built-in dc/dc converter. Using the

current measurement jumpers, current consumption can be measured separately either for the MCU, the radio, or

the peripherals. The motherboard contains test pins for all I/O pins of the MCU and for all digital pins of the radio. In

addition, there are SMA connectors for the GPIOs of the radio for test equipment connection. A USB

communication interface as well as a built-in Silicon Labs USB-to-C2 debug adapter are integrated onto the board

so that the wireless motherboard (WMB) can be directly connected via USB to the PC for downloading and

debugging code on the MCU.

An interface connection towards sensor modules can also be found. The MCU is also connected to the RF pico

board through a connector pair.

MCU Pico Board

RF Pico Board

Current

Measurement

Pins

Radio

Test

Pins

Radio GPIO

Connectors

Buzzer

Reset Button

Push Buttons

Potentiometer

MCU DC/DC

Converter

Switch

MCU Test

Pins

Power

Supply

Switch

Sensor

Module

Connector

External

Power

Supply

Connection

USB

Communication

and Debug

Interface