#include <nitro/spi.h>
u32 PMi_GetSoundVolume( PMSoundVolumeSwitch* swBuf );
swBuf | The buffer that stores the obtained results of sound unit power switch. |
The PM_RESULT_SUCCESS
return value indicates that the execution of the command has succeeded. The PM_RESULT_ERROR
return value indicates that an error has occurred with the ARM7 processor.
This function gets the currently set values of the effective switch of the external sound volume.
The PMSoundVolumeSwitch
enumerator type value is stored in the swBuf argument and can contain either one of the following values:
PM_SOUND_VOLUME_OFF |
Turns off the external sound volume and forces the speaker output at maximum volume. |
PM_SOUND_VOLUME_ON |
Turns on the external sound volume. |
This function uses PXI to send the command that performs the corresponding operation in the ARM7 processor. The ARM7 side that receives that command is executed by operating the PMIC. Before you use this function, initialize the PM library by using the PM_Init()
function. The PM_Init()
function has to be called only once. Also, when you call OS_Init()
, there is no need to call PM_Init()
separately since it is called from within OS_Init()
.)
This function reads the PMIC_CTL value of the PMIC register.
08/09/2004 Initial version