Hi Mark again
OK, I can be a 1st guy :) The HW setting is like below
value: mean 00000: 128 dB/1 stepCurrent "DVC Out Ramp Period" wants to have direct value of register. But, upstream want to have time like this ?
Yes, please - much easier for users.
I tried to use "time" for Volume Ramp, but it seems difficult.
1) datasheet indicates Volume Ramp (= x dB / y step) but, there is no document "what is step" here. (even though HW guy...)
2) Volume UP/Down time depends on "Volume Ramp" and Start/Stop Volume If 0% -> 100% takes X sec, 50% -> 100% takes X/2 sec. But,we don't know final Volume (= 5, 6) when user sets "Volume Ramp" (= 1).
1. amixer set "DVC Out Ramp Period" xxx // set Period 2. amixer set "DVC Out Ramp" 0% // Mute as default 3. amixer set "DVC Out Ramp" on // enable Volume Ramp 4. aplay xxx.wav & 5. amixer set "DVC Out Ramp" 100% // to Volume 100% 6. amixer set "DVC Out Ramp" 0% // to Mute
3) If we can calculate it somehow, Volume UP/Down speed is not same.
amixer set "DVC Out Ramp Period" 10000 // Volume UP/Down in 10 sec 0% -> 100% 50% -> 100% are happen in 10 sec. 90% -> 100% This is confusable ?
Best regards --- Kuninori Morimoto