Part Number: MSP432P401R
Tool/software: TI-RTOS
hi ti, i am working with MSP432 Launchpad for my project, i am using msp driver library for configuring my boards
one of that is power control modes, I hv called a function for setting up core voltage MAP_PCM_SetCoreVoltageLevel( PCM_VCORE1);
what setting this function do, which power mode it operates on ?
MAP_PCM_SetCoreVoltageLevel( PCM_VCORE1); is defined in "cpu.c"
I have mapped function calls in a attached document one after one please refer and let me help to find out what it sets to PCM
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/******************************************************************************/
bool PCM_setCoreVoltageLevel(uint_fast8_t voltageLevel)
{
return __PCM_setCoreVoltageLevelAdvanced(voltageLevel, 0, true);
}
/******************************************************************************/
static bool __PCM_setCoreVoltageLevelAdvanced(uint_fast8_t voltageLevel,
uint32_t timeOut, bool blocking)
{
uint8_t powerMode, bCurrentVoltageLevel;
uint32_t regValue;
bool boolTimeout;
ASSERT(voltageLevel == PCM_VCORE0 || voltageLevel == PCM_VCORE1);
/* Getting current power mode and level */
powerMode = PCM_getPowerMode();
bCurrentVoltageLevel = PCM_getCoreVoltageLevel();
boolTimeout = timeOut > 0 ? true : false;
/* If we are already at the power mode they requested, return */
if (bCurrentVoltageLevel == voltageLevel)
return true;
while (bCurrentVoltageLevel != voltageLevel)
{
regValue = PCM->CTL0;
switch (PCM_getPowerState())
{
case PCM_AM_LF_VCORE1:
case PCM_AM_DCDC_VCORE1:
case PCM_AM_LDO_VCORE0:
PCM->CTL0 = (PCM_KEY | (PCM_AM_LDO_VCORE1)
| (regValue & ~(PCM_CTL0_KEY_MASK | PCM_CTL0_AMR_MASK)));
break;
case PCM_AM_LF_VCORE0:
case PCM_AM_DCDC_VCORE0:
case PCM_AM_LDO_VCORE1:
PCM->CTL0 = (PCM_KEY | (PCM_AM_LDO_VCORE0)
| (regValue & ~(PCM_CTL0_KEY_MASK | PCM_CTL0_AMR_MASK)));
break;
default:
ASSERT(false);
}
if(blocking)
{
while (BITBAND_PERI(PCM->CTL1, PCM_CTL1_PMR_BUSY_OFS))
{
if (boolTimeout && !(--timeOut))
return false;
}
}
else
{
return true;
}
bCurrentVoltageLevel = PCM_getCoreVoltageLevel();
}
/* Changing the power mode if we are stuck in LDO mode */
if (powerMode != PCM_getPowerMode())
{
if (powerMode == PCM_DCDC_MODE)
return PCM_setPowerMode(PCM_DCDC_MODE);
else
return PCM_setPowerMode(PCM_LF_MODE);
}
return true;
}
/******************************************************************************/
uint8_t PCM_getPowerMode(void)
{
uint8_t currentPowerState;
currentPowerState = PCM_getPowerState();
switch (currentPowerState)
{
case PCM_AM_LDO_VCORE0:
case PCM_AM_LDO_VCORE1:
case PCM_LPM0_LDO_VCORE0:
case PCM_LPM0_LDO_VCORE1:
return PCM_LDO_MODE;
case PCM_AM_DCDC_VCORE0:
case PCM_AM_DCDC_VCORE1:
case PCM_LPM0_DCDC_VCORE0:
case PCM_LPM0_DCDC_VCORE1:
return PCM_DCDC_MODE;
case PCM_LPM0_LF_VCORE0:
case PCM_LPM0_LF_VCORE1:
case PCM_AM_LF_VCORE1:
case PCM_AM_LF_VCORE0:
return PCM_LF_MODE;
default:
ASSERT(false);
return false;
}
}
/******************************************************************************/
uint8_t PCM_getCoreVoltageLevel(void)
{
uint8_t currentPowerState = PCM_getPowerState();
switch (currentPowerState)
{
case PCM_AM_LDO_VCORE0:
case PCM_AM_DCDC_VCORE0:
case PCM_AM_LF_VCORE0:
case PCM_LPM0_LDO_VCORE0:
case PCM_LPM0_DCDC_VCORE0:
case PCM_LPM0_LF_VCORE0:
return PCM_VCORE0;
case PCM_AM_LDO_VCORE1:
case PCM_AM_DCDC_VCORE1:
case PCM_AM_LF_VCORE1:
case PCM_LPM0_LDO_VCORE1:
case PCM_LPM0_DCDC_VCORE1:
case PCM_LPM0_LF_VCORE1:
return PCM_VCORE1;
case PCM_LPM3:
return PCM_VCORELPM3;
default:
ASSERT(false);
return false;
}
}
/******************************************************************************/
uint8_t PCM_getPowerState(void)
{
return (PCM->CTL0 | PCM_CTL0_CPM_MASK);
}
/******************************************************************************/
