Figure 41.
Voice streaming from a STEVAL-BLUEMIC-1 evaluation board to an STM32 Nucleo board
1.
Power the STEVAL-BLUEMIC-1 evaluation board on using the on-board switch SW1
2.
Connect the receiver to a PC via the mini USB on the X-NUCLEO-CCA02M1 expansion board (the jumper
JP5 on the STM32 Nucleo must be E5V).
When the green LED on the STEVAL-BLUEMIC-1 evaluation board turns on, the connection is established
and the voice streaming from the peripheral to central device starts.
Note:
In a different version of the evaluation board the color of the LED can be inverted.
3.
As soon as the central unit is recognized as a standard USB microphone, select the correct option in
Microphone Properties (8 or 16 kHz) as shown below.
Figure 42.
Receiver recognized as USB microphone
4.
Use any freeware or commercial audio recording software to interface with the system, for example Audacity
(
http://audacity.sourceforge.net/
).
5.
Open it and press the Record button to record the audio streamed from the STEVAL-BLUEMIC-1 evaluation
board.
UM2257
Streaming to an STM32 Nucleo board used as a receiver
UM2257
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Rev 2
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