WM8731 CODEC Volume Control suggestion

[rmkumar]

When WM8731 is configured as LINE_IN enabled and MIC muted,
WM8731_SetVolume from example code was creating problem. It is better to have two
different functions SetInputVolume and SetOutputVolume

Code: Select all

sub procedure WM8731_SetVolume(dim LeftCh, RightCh as byte)
dim temp as word

  if LeftCh > 80 then
    LeftCh = 80
  end if
  if RightCh > 80 then
    RightCh = 80
  end if
  
  temp = LeftCh + 0x00AF
  WM8731_CMD(WM8731_Reg_Lhphone_out, temp)      'left headphone out
  'WM8731_CMD(WM8731_REG_LLINE_IN, temp) 'Creates problem - mute Left LINE_IN when LINE_IN is enabled
  temp = RightCh + 0x00AF
  WM8731_CMD(WM8731_Reg_Rhphone_out, temp)     'right headphone out
  'WM8731_CMD(WM8731_REG_RLINE_IN, temp) 'Creates problem - mute RightLINE_IN when LINE_IN is enabled
end sub

Code: Select all

  'WM8731_CMD(WM8731_REG_LLINE_IN, temp) 'Creates problem - mute Left LINE_IN when LINE_IN is enabled

Code: Select all

  'WM8731_CMD(WM8731_REG_RLINE_IN, temp) 'Creates problem - mute Right LINE_IN when LINE_IN is enabled

[filip]

Hi,

Thanks for sharing this.

Regards,
Filip.