how to set volume

[Anonymous]

in your example volume start to -20dB , how to set it to start to -1db?

[Michael P. Flaga]

Volume is documented in the github page HERE

Change line 214 of SFEMP3Shield.cpp from 20 to 2

SetVolume(2,2);

I have thought about adding a feature to store the volume into Flash, as to persist between power cycles. But I hesitate as being fringe (too host specific) and not part of the core scope of this example. And requires additional libraries.

[Anonymous]

thank

[Michael P. Flaga]

nonlinearmind had asked about getting most volume possible.

SS_SWING of the SCI_STATUS allows you to go above the 0 dB volume setting. Value 0 is normal mode, 1 gives +0.5 dB, and 2 gives +1.0 dB. Settings from 3 to 7 cause the DAC modulator to be overdriven and should not be used. However, I doubt the receiving device will be able to handle it with out clipping.

At this time the released public GITHUB driver does not support a public member function to change this. Assuming 0dB should be loud enough.

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