2021 Microchip Technology Inc. DS00003118C-Page 11
AN3118
Figure 7 illustrates the functionality of all the buttons
available on the BM83 EVB.
FIGURE 7: BM83 EVB
The following demo steps for Concert mode and Stereo
mode are based on Embedded mode. The functionality
is same for the Host mode as well.
2.3 Concert Mode Demo
Long press MFB on all the BM83 EVBs. This will
power-on the EVB and initialization will be done.
Observe that the Green LED (D401) turns ON and Blue
(D300) and green (D402) LEDs blink. Long press VOL
UP (SW702) on all EVBs. The EVB will either have a
solid Red or Blue LED flashing after a short time period.
The EVB with a solid Red LED (D301) is connected as
a peripheral to the EVB with a flashing Blue LED
(D300) as the central. The EVB where VOL UP
(SW702) is pressed first is provisioned as the central
speaker and the others are provisioned as the
peripheral speaker.
To connect the central speaker with a Bluetooth
streaming device, long press the MFB button on the
central (flashing Blue LED) EVB to enter into Pairing
mode. Pair with a Bluetooth-enabled audio streaming
device. The flashing Blue LED will become solid Blue
on the central EVB once pairing is complete and the
connection is established. Now, play music on the
audio streaming device to hear music on the central
and peripheral speakers.
To add a new peripheral speaker, long press the VOL
UP and VOL DN buttons at the same time on the
central, then long press VOL UP (SW702) on the new
speaker. The new speaker will have a solid Red LED
indicating that it is added as a peripheral speaker in the
group. Music will be heard on the newly added
peripheral speakers along with the central and
peripheral speakers.
To play the audio through AUX-In, connect the central
(flashing/solid Blue LED) with the audio streaming
device through the AUX-In cable. Play music on the
audio streaming device and the audio will be heard on
both the central and peripheral speakers. If Bluetooth
audio was playing before inserting the AUX-In, it will
pause the Bluetooth audio and the AUX-In audio will
start playing. When the AUX-In cable is removed, the
Bluetooth audio will resume in its previous state.
A long press MFB on the central EVB will power-off the
central and connected peripheral EVB.
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