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AK4951: Adjust initial microphone gain.

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This commit is contained in:
Jared Boone 2017-07-18 10:53:08 -07:00
parent 0bdf8b47ea
commit 963579d82a
1 changed files with 3 additions and 2 deletions
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5
firmware/common/ak4951.cpp
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@ -210,10 +210,11 @@ void AK4951::microphone_enable() {
// map.r.digital_mic.DMIC = 0; // map.r.digital_mic.DMIC = 0;
// update(Register::DigitalMic); // update(Register::DigitalMic);
map.r.signal_select_1.MGAIN20 = 0b110; const uint_fast8_t mgain = 0b0111;
map.r.signal_select_1.MGAIN20 = mgain & 7;
map.r.signal_select_1.PMMP = 1; map.r.signal_select_1.PMMP = 1;
map.r.signal_select_1.MPSEL = 1; // MPWR2 pin map.r.signal_select_1.MPSEL = 1; // MPWR2 pin
map.r.signal_select_1.MGAIN3 = 0b0; map.r.signal_select_1.MGAIN3 = (mgain >> 3) & 1;
update(Register::SignalSelect1); update(Register::SignalSelect1);
map.r.signal_select_2.INL = 0b01; // Lch input signal = LIN2 map.r.signal_select_2.INL = 0b01; // Lch input signal = LIN2