imx6solox audio volue addition and subtraction

[1773750986]

I  want  to  add  two Volume addition and subtraction buttons，should i  add  this  two GPIO to 1.8V  CSI module which control  WM8962BECSN/R   or  other Casual 3.3V  module？

[igorpadykov]

Hi zhang

for volume control examples one can check sect.28.5.1 Stereo Codec Unit Test

attached Linux Manual and unit test package ( ../mxc_sound_test)

www.nxp.com/lgfiles/NMG/MAD/YOCTO/imx-test-5.4.tar.gz

Best regards
igor
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[1773750986]

You misunderstood what I meant. I didn't want to ask you about the software. What I want to ask is about the hardware ，where do I connect  the Volume adjustment button. Is 1.8V gpio or the 3.3V GPIO?

[igorpadykov]

you can use any gpio for such purpose, ir does not not matter "1.8V gpio or the 3.3V GPIO".

[1773750986]

ok ，thanks very  much！