Пример #1
0
/*******************************************************************************
* 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) */
    }
Пример #2
0
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);
}
Пример #3
0
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);
}
Пример #4
0
/*******************************************************************************
* 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) */
    }
Пример #5
0
/*******************************************************************************
* 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) */
}