/*******************************************************************************
* Function Name: PWM_1_RestoreConfig
********************************************************************************
*
* Summary:
* Restores the current user configuration of the component.
*
* Parameters:
* None
*
* Return:
* None
*
* Global variables:
* PWM_1_backup: Variables of this global structure are used to
* restore the values of non retention registers on wakeup from sleep mode.
*
*******************************************************************************/
void PWM_1_RestoreConfig(void)
{
#if(!PWM_1_UsingFixedFunction)
#if(!PWM_1_PWMModeIsCenterAligned)
PWM_1_WritePeriod(PWM_1_backup.PWMPeriod);
#endif /* (!PWM_1_PWMModeIsCenterAligned) */
PWM_1_WriteCounter(PWM_1_backup.PWMUdb);
#if (PWM_1_UseStatus)
PWM_1_STATUS_MASK = PWM_1_backup.InterruptMaskValue;
#endif /* (PWM_1_UseStatus) */
#if(PWM_1_DeadBandMode == PWM_1__B_PWM__DBM_256_CLOCKS || \
PWM_1_DeadBandMode == PWM_1__B_PWM__DBM_2_4_CLOCKS)
PWM_1_WriteDeadTime(PWM_1_backup.PWMdeadBandValue);
#endif /* deadband count is either 2-4 clocks or 256 clocks */
#if(PWM_1_KillModeMinTime)
PWM_1_WriteKillTime(PWM_1_backup.PWMKillCounterPeriod);
#endif /* (PWM_1_KillModeMinTime) */
#if(PWM_1_UseControl)
PWM_1_WriteControlRegister(PWM_1_backup.PWMControlRegister);
#endif /* (PWM_1_UseControl) */
#endif /* (!PWM_1_UsingFixedFunction) */
}
void piezo_play(uint16 frequency_value, uint8 note)
{
TRIGGER_TIMER_Write(0);
// duty cycle ticks is a percentage of frequency based on volume
int period_ticks = f_clock * freq_mod / frequency_value;
uint16 compare_ticks = period_ticks * volume / 100;
// Set period to frequency value
PWM_1_WritePeriod(period_ticks);
// Set compare to toggle on duty cycle ticks
PWM_1_WriteCompare(compare_ticks);
// Figure out the duration of the note and set and trigger the interrupt timer
uint16 duration = 60000/tempo/note;
Timer_1_WriteCompare(duration);
TRIGGER_TIMER_Write(1);
}
void piezo_tone(uint16 frequency_value)
{
current_frequency = frequency_value;
// duty cycle ticks is a percentage of frequency based on volume
int period_ticks = f_clock * freq_mod / frequency_value;
uint16 compare_ticks = period_ticks * volume / 100;
// maximum duty cycle ticks must be at least 1 lower than frequency
// to produce a vibration
if (compare_ticks == period_ticks) {
compare_ticks--;
}
// Set period to frequency value
PWM_1_WritePeriod(period_ticks);
// Set compare to toggle on duty cycle ticks
PWM_1_WriteCompare(compare_ticks);
}
/*******************************************************************************
* Function Name: PWM_1_RestoreConfig
********************************************************************************
*
* Summary:
* Restores the current user configuration of the component.
*
* Parameters:
* None
*
* Return:
* None
*
* Global variables:
* PWM_1_backup: Variables of this global structure are used to
* restore the values of non retention registers on wakeup from sleep mode.
*
*******************************************************************************/
void PWM_1_RestoreConfig(void)
{
#if(!PWM_1_UsingFixedFunction)
#if (CY_UDB_V0)
/* Interrupt State Backup for Critical Region*/
uint8 PWM_1_interruptState;
/* Enter Critical Region*/
PWM_1_interruptState = CyEnterCriticalSection();
#if (PWM_1_UseStatus)
/* Use the interrupt output of the status register for IRQ output */
PWM_1_STATUS_AUX_CTRL |= PWM_1_STATUS_ACTL_INT_EN_MASK;
PWM_1_STATUS_MASK = PWM_1_backup.InterruptMaskValue;
#endif /* (PWM_1_UseStatus) */
#if (PWM_1_Resolution == 8)
/* Set FIFO 0 to 1 byte register for period*/
PWM_1_AUX_CONTROLDP0 |= (PWM_1_AUX_CTRL_FIFO0_CLR);
#else /* (PWM_1_Resolution == 16)*/
/* Set FIFO 0 to 1 byte register for period */
PWM_1_AUX_CONTROLDP0 |= (PWM_1_AUX_CTRL_FIFO0_CLR);
PWM_1_AUX_CONTROLDP1 |= (PWM_1_AUX_CTRL_FIFO0_CLR);
#endif /* (PWM_1_Resolution == 8) */
/* Exit Critical Region*/
CyExitCriticalSection(PWM_1_interruptState);
PWM_1_WriteCounter(PWM_1_backup.PWMUdb);
PWM_1_WritePeriod(PWM_1_backup.PWMPeriod);
#if(PWM_1_UseOneCompareMode)
PWM_1_WriteCompare(PWM_1_backup.PWMCompareValue);
#else
PWM_1_WriteCompare1(PWM_1_backup.PWMCompareValue1);
PWM_1_WriteCompare2(PWM_1_backup.PWMCompareValue2);
#endif /* (PWM_1_UseOneCompareMode) */
#if(PWM_1_DeadBandMode == PWM_1__B_PWM__DBM_256_CLOCKS || \
PWM_1_DeadBandMode == PWM_1__B_PWM__DBM_2_4_CLOCKS)
PWM_1_WriteDeadTime(PWM_1_backup.PWMdeadBandValue);
#endif /* deadband count is either 2-4 clocks or 256 clocks */
#if ( PWM_1_KillModeMinTime)
PWM_1_WriteKillTime(PWM_1_backup.PWMKillCounterPeriod);
#endif /* ( PWM_1_KillModeMinTime) */
#endif /* (CY_UDB_V0) */
#if (CY_UDB_V1)
#if(!PWM_1_PWMModeIsCenterAligned)
PWM_1_WritePeriod(PWM_1_backup.PWMPeriod);
#endif /* (!PWM_1_PWMModeIsCenterAligned) */
PWM_1_WriteCounter(PWM_1_backup.PWMUdb);
#if (PWM_1_UseStatus)
PWM_1_STATUS_MASK = PWM_1_backup.InterruptMaskValue;
#endif /* (PWM_1_UseStatus) */
#if(PWM_1_DeadBandMode == PWM_1__B_PWM__DBM_256_CLOCKS || \
PWM_1_DeadBandMode == PWM_1__B_PWM__DBM_2_4_CLOCKS)
PWM_1_WriteDeadTime(PWM_1_backup.PWMdeadBandValue);
#endif /* deadband count is either 2-4 clocks or 256 clocks */
#if(PWM_1_KillModeMinTime)
PWM_1_WriteKillTime(PWM_1_backup.PWMKillCounterPeriod);
#endif /* (PWM_1_KillModeMinTime) */
#endif /* (CY_UDB_V1) */
#if(PWM_1_UseControl)
PWM_1_WriteControlRegister(PWM_1_backup.PWMControlRegister);
#endif /* (PWM_1_UseControl) */
#endif /* (!PWM_1_UsingFixedFunction) */
}
/*******************************************************************************
* Function Name: PWM_1_Init
********************************************************************************
*
* Summary:
* Initialize component's parameters to the parameters set by user in the
* customizer of the component placed onto schematic. Usually called in
* PWM_1_Start().
*
* Parameters:
* None
*
* Return:
* None
*
*******************************************************************************/
void PWM_1_Init(void)
{
#if (PWM_1_UsingFixedFunction || PWM_1_UseControl)
uint8 ctrl;
#endif /* (PWM_1_UsingFixedFunction || PWM_1_UseControl) */
#if(!PWM_1_UsingFixedFunction)
#if(PWM_1_UseStatus)
/* Interrupt State Backup for Critical Region*/
uint8 PWM_1_interruptState;
#endif /* (PWM_1_UseStatus) */
#endif /* (!PWM_1_UsingFixedFunction) */
#if (PWM_1_UsingFixedFunction)
/* You are allowed to write the compare value (FF only) */
PWM_1_CONTROL |= PWM_1_CFG0_MODE;
#if (PWM_1_DeadBand2_4)
PWM_1_CONTROL |= PWM_1_CFG0_DB;
#endif /* (PWM_1_DeadBand2_4) */
ctrl = PWM_1_CONTROL3 & ((uint8 )(~PWM_1_CTRL_CMPMODE1_MASK));
PWM_1_CONTROL3 = ctrl | PWM_1_DEFAULT_COMPARE1_MODE;
/* Clear and Set SYNCTC and SYNCCMP bits of RT1 register */
PWM_1_RT1 &= ((uint8)(~PWM_1_RT1_MASK));
PWM_1_RT1 |= PWM_1_SYNC;
/*Enable DSI Sync all all inputs of the PWM*/
PWM_1_RT1 &= ((uint8)(~PWM_1_SYNCDSI_MASK));
PWM_1_RT1 |= PWM_1_SYNCDSI_EN;
#elif (PWM_1_UseControl)
/* Set the default compare mode defined in the parameter */
ctrl = PWM_1_CONTROL & ((uint8)(~PWM_1_CTRL_CMPMODE2_MASK)) &
((uint8)(~PWM_1_CTRL_CMPMODE1_MASK));
PWM_1_CONTROL = ctrl | PWM_1_DEFAULT_COMPARE2_MODE |
PWM_1_DEFAULT_COMPARE1_MODE;
#endif /* (PWM_1_UsingFixedFunction) */
#if (!PWM_1_UsingFixedFunction)
#if (PWM_1_Resolution == 8)
/* Set FIFO 0 to 1 byte register for period*/
PWM_1_AUX_CONTROLDP0 |= (PWM_1_AUX_CTRL_FIFO0_CLR);
#else /* (PWM_1_Resolution == 16)*/
/* Set FIFO 0 to 1 byte register for period */
PWM_1_AUX_CONTROLDP0 |= (PWM_1_AUX_CTRL_FIFO0_CLR);
PWM_1_AUX_CONTROLDP1 |= (PWM_1_AUX_CTRL_FIFO0_CLR);
#endif /* (PWM_1_Resolution == 8) */
PWM_1_WriteCounter(PWM_1_INIT_PERIOD_VALUE);
#endif /* (!PWM_1_UsingFixedFunction) */
PWM_1_WritePeriod(PWM_1_INIT_PERIOD_VALUE);
#if (PWM_1_UseOneCompareMode)
PWM_1_WriteCompare(PWM_1_INIT_COMPARE_VALUE1);
#else
PWM_1_WriteCompare1(PWM_1_INIT_COMPARE_VALUE1);
PWM_1_WriteCompare2(PWM_1_INIT_COMPARE_VALUE2);
#endif /* (PWM_1_UseOneCompareMode) */
#if (PWM_1_KillModeMinTime)
PWM_1_WriteKillTime(PWM_1_MinimumKillTime);
#endif /* (PWM_1_KillModeMinTime) */
#if (PWM_1_DeadBandUsed)
PWM_1_WriteDeadTime(PWM_1_INIT_DEAD_TIME);
#endif /* (PWM_1_DeadBandUsed) */
#if (PWM_1_UseStatus || PWM_1_UsingFixedFunction)
PWM_1_SetInterruptMode(PWM_1_INIT_INTERRUPTS_MODE);
#endif /* (PWM_1_UseStatus || PWM_1_UsingFixedFunction) */
#if (PWM_1_UsingFixedFunction)
/* Globally Enable the Fixed Function Block chosen */
PWM_1_GLOBAL_ENABLE |= PWM_1_BLOCK_EN_MASK;
/* Set the Interrupt source to come from the status register */
PWM_1_CONTROL2 |= PWM_1_CTRL2_IRQ_SEL;
#else
#if(PWM_1_UseStatus)
/* CyEnterCriticalRegion and CyExitCriticalRegion are used to mark following region critical*/
/* Enter Critical Region*/
PWM_1_interruptState = CyEnterCriticalSection();
/* Use the interrupt output of the status register for IRQ output */
PWM_1_STATUS_AUX_CTRL |= PWM_1_STATUS_ACTL_INT_EN_MASK;
/* Exit Critical Region*/
CyExitCriticalSection(PWM_1_interruptState);
/* Clear the FIFO to enable the PWM_1_STATUS_FIFOFULL
bit to be set on FIFO full. */
PWM_1_ClearFIFO();
#endif /* (PWM_1_UseStatus) */
#endif /* (PWM_1_UsingFixedFunction) */
}