#include "chip.h"
#include <stdint.h>
#include <assert.h>

Functions
void	PWMC_ConfigureChannel (Pwm *pPwm, uint32_t ul_channel, uint32_t prescaler, uint32_t alignment, uint32_t polarity)
	Configures PWM a ul_channel with the given parameters, basic configure function. More...

void	PWMC_ConfigureChannelExt (Pwm *pPwm, uint32_t ul_channel, uint32_t prescaler, uint32_t alignment, uint32_t polarity, uint32_t countEventSelect, uint32_t DTEnable, uint32_t DTHInverte, uint32_t DTLInverte)
	Configures PWM a ul_channel with the given parameters, extend configure function. More...

void	PWMC_ConfigureClocks (uint32_t clka, uint32_t clkb, uint32_t mck)
	Configures PWM clocks A & B to run at the given frequencies. More...

void	PWMC_SetPeriod (Pwm *pPwm, uint32_t ul_channel, uint16_t period)
	Sets the period value used by a PWM ul_channel. More...

void	PWMC_SetDutyCycle (Pwm *pPwm, uint32_t ul_channel, uint16_t duty)
	Sets the duty cycle used by a PWM ul_channel. This function writes directly to the CDTY register if the ul_channel is disabled; otherwise it uses the update register CDTYUPD. Note that the duty cycle must always be inferior or equal to the ul_channel period. More...

void	PWMC_SetDeadTime (Pwm *pPwm, uint32_t ul_channel, uint16_t timeH, uint16_t timeL)
	Sets the dead time used by a PWM ul_channel. This function writes directly to the DT register if the ul_channel is disabled; otherwise it uses the update register DTUPD. Note that the dead time must always be inferior or equal to the ul_channel period. More...

void	PWMC_ConfigureSyncChannel (Pwm *pPwm, uint32_t ul_channels, uint32_t updateMode, uint32_t requestMode, uint32_t requestComparisonSelect)
	Configures Syncronous ul_channel with the given parameters. Beware: At this time, the channels should be disabled. More...

void	PWMC_SetSyncChannelUpdatePeriod (Pwm *pPwm, uint8_t period)
	Sets the update period of the synchronous channels. This function writes directly to the SCUP register if the ul_channel #0 is disabled; otherwise it uses the update register SCUPUPD. More...

void	PWMC_SetSyncChannelUpdateUnlock (Pwm *pPwm)
	Sets synchronous channels update unlock. More...

void	PWMC_EnableChannel (Pwm *pPwm, uint32_t ul_channel)
	Enables the given PWM ul_channel. More...

void	PWMC_DisableChannel (Pwm *pPwm, uint32_t ul_channel)
	Disables the given PWM ul_channel. More...

void	PWMC_EnableChannelIt (Pwm *pPwm, uint32_t ul_channel)
	Enables the period interrupt for the given PWM ul_channel. More...

void	PWMC_DisableChannelIt (Pwm *pPwm, uint32_t ul_channel)
	Disables the period interrupt for the given PWM ul_channel. More...

void	PWMC_EnableIt (Pwm *pPwm, uint32_t sources1, uint32_t sources2)
	Enables the selected interrupts sources on a PWMC peripheral. More...

void	PWMC_DisableIt (Pwm *pPwm, uint32_t sources1, uint32_t sources2)
	Disables the selected interrupts sources on a PWMC peripheral. More...

uint8_t	PWMC_WriteBuffer (Pwm pwmc, void pvBuffer, uint32_t length)
	Sends the contents of buffer through a PWMC peripheral, using the PDC to take care of the transfer. More...

void	PWMC_SetOverrideValue (Pwm *pPwm, uint32_t value)
	Set PWM output override value. More...

void	PWMC_EnableOverrideOutput (Pwm *pPwm, uint32_t value, uint32_t sync)
	Enalbe override output. More...

void	PWMC_DisableOverrideOutput (Pwm *pPwm, uint32_t value, uint32_t sync)
	Disalbe override output. More...

void	PWMC_SetFaultMode (Pwm *pPwm, uint32_t mode)
	Set PWM fault mode. More...

void	PWMC_FaultClear (Pwm *pPwm, uint32_t fault)
	PWM fault clear. More...

void	PWMC_SetFaultProtectionValue (Pwm *pPwm, uint32_t value)
	Set PWM fault protection value. More...

void	PWMC_EnableFaultProtection (Pwm *pPwm, uint32_t ul_channel, uint32_t ul_value)
	Enable PWM fault protection. More...

void	PWMC_ConfigureComparisonUnit (Pwm *pPwm, uint32_t x, uint32_t value, uint32_t mode)
	Configure comparison unit. More...

void	PWMC_ConfigureEventLineMode (Pwm *pPwm, uint32_t x, uint32_t mode)
	Configure event line mode. More...

Detailed Description

Implementation of the Pulse Width Modulation Controller (PWM) peripheral.

Function Documentation

void PWMC_ConfigureChannel	(	Pwm *	pPwm,
		uint32_t	ul_channel,
		uint32_t	prescaler,
		uint32_t	alignment,
		uint32_t	polarity
	)

Configures PWM a ul_channel with the given parameters, basic configure function.

The PWM controller must have been clocked in the PMC prior to calling this function. Beware: this function disables the ul_channel. It waits until disable is effective.

Parameters

ul_channel	Channel number.
prescaler	Channel prescaler.
alignment	Channel alignment.
polarity	Channel polarity.

void PWMC_ConfigureChannelExt	(	Pwm *	pPwm,
		uint32_t	ul_channel,
		uint32_t	prescaler,
		uint32_t	alignment,
		uint32_t	polarity,
		uint32_t	countEventSelect,
		uint32_t	DTEnable,
		uint32_t	DTHInverte,
		uint32_t	DTLInverte
	)

Configures PWM a ul_channel with the given parameters, extend configure function.

The PWM controller must have been clocked in the PMC prior to calling this function. Beware: this function disables the ul_channel. It waits until disable is effective.

Parameters

ul_channel	Channel number.
prescaler	Channel prescaler.
alignment	Channel alignment.
polarity	Channel polarity.
countEventSelect	Channel counter event selection.
DTEnable	Channel dead time generator enable.
DTHInverte	Channel Dead-Time PWMHx output Inverted.
DTLInverte	Channel Dead-Time PWMHx output Inverted.

void PWMC_ConfigureClocks	(	uint32_t	clka,
		uint32_t	clkb,
		uint32_t	mck
	)

Configures PWM clocks A & B to run at the given frequencies.

This function finds the best MCK divisor and prescaler values automatically.

Parameters

clka	Desired clock A frequency (0 if not used).
clkb	Desired clock B frequency (0 if not used).
mck	Master clock frequency.

void PWMC_ConfigureComparisonUnit	(	Pwm *	pPwm,
		uint32_t	x,
		uint32_t	value,
		uint32_t	mode
	)

Configure comparison unit.

Parameters

x	comparison x index
value	comparison x value.
mode	comparison x mode

void PWMC_ConfigureEventLineMode	(	Pwm *	pPwm,
		uint32_t	x,
		uint32_t	mode
	)

Configure event line mode.

Parameters

x	Line x
mode	Bitwise OR of line mode selection

void PWMC_ConfigureSyncChannel	(	Pwm *	pPwm,
		uint32_t	ul_channels,
		uint32_t	updateMode,
		uint32_t	requestMode,
		uint32_t	requestComparisonSelect
	)

Configures Syncronous ul_channel with the given parameters. Beware: At this time, the channels should be disabled.

Parameters

channels	Bitwise OR of Syncronous channels.
updateMode	Syncronous ul_channel update mode.
requestMode	PDC transfer request mode.
requestComparisonSelect	PDC transfer request comparison selection.

void PWMC_DisableChannel	(	Pwm *	pPwm,
		uint32_t	ul_channel
	)

Disables the given PWM ul_channel.

Beware, ul_channel will be effectively disabled at the end of the current period. Application can check ul_channel is disabled using the following wait loop: while ((PWM->PWM_SR & (1 << ul_channel)) != 0);

Parameters

ul_channel Channel number.

void PWMC_DisableChannelIt	(	Pwm *	pPwm,
		uint32_t	ul_channel
	)

Disables the period interrupt for the given PWM ul_channel.

Parameters

ul_channel Channel number.

void PWMC_DisableIt	(	Pwm *	pPwm,
		uint32_t	sources1,
		uint32_t	sources2
	)

Disables the selected interrupts sources on a PWMC peripheral.

Parameters

sources1	Bitwise OR of selected interrupt sources of PWM_IDR1.
sources2	Bitwise OR of selected interrupt sources of PWM_IDR2.

void PWMC_DisableOverrideOutput	(	Pwm *	pPwm,
		uint32_t	value,
		uint32_t	sync
	)

Disalbe override output.

Parameters

value	Bitwise OR of output selection.
sync	0: enable the output asyncronously, 1: enable it syncronously

void PWMC_EnableChannel	(	Pwm *	pPwm,
		uint32_t	ul_channel
	)

Enables the given PWM ul_channel.

This does NOT enable the corresponding pin;this must be done in the user code.

Parameters

ul_channel Channel number.

void PWMC_EnableChannelIt	(	Pwm *	pPwm,
		uint32_t	ul_channel
	)

Enables the period interrupt for the given PWM ul_channel.

Parameters

ul_channel Channel number.

void PWMC_EnableFaultProtection	(	Pwm *	pPwm,
		uint32_t	ul_channel,
		uint32_t	ul_value
	)

Enable PWM fault protection.

Parameters

value Bitwise OR of FPEx[y].

void PWMC_EnableIt	(	Pwm *	pPwm,
		uint32_t	sources1,
		uint32_t	sources2
	)

Enables the selected interrupts sources on a PWMC peripheral.

Parameters

sources1	Bitwise OR of selected interrupt sources of PWM_IER1.
sources2	Bitwise OR of selected interrupt sources of PWM_IER2.

void PWMC_EnableOverrideOutput	(	Pwm *	pPwm,
		uint32_t	value,
		uint32_t	sync
	)

Enalbe override output.

Parameters

value	Bitwise OR of output selection.
sync	0: enable the output asyncronously, 1: enable it syncronously

void PWMC_FaultClear	(	Pwm *	pPwm,
		uint32_t	fault
	)

PWM fault clear.

Parameters

fault Bitwise OR of fault to clear.

void PWMC_SetDeadTime	(	Pwm *	pPwm,
		uint32_t	ul_channel,
		uint16_t	timeH,
		uint16_t	timeL
	)

Sets the dead time used by a PWM ul_channel. This function writes directly to the DT register if the ul_channel is disabled; otherwise it uses the update register DTUPD. Note that the dead time must always be inferior or equal to the ul_channel period.

Parameters

ul_channel	Channel number.
timeH	Dead time value for PWMHx output.
timeL	Dead time value for PWMLx output.

void PWMC_SetDutyCycle	(	Pwm *	pPwm,
		uint32_t	ul_channel,
		uint16_t	duty
	)

Sets the duty cycle used by a PWM ul_channel. This function writes directly to the CDTY register if the ul_channel is disabled; otherwise it uses the update register CDTYUPD. Note that the duty cycle must always be inferior or equal to the ul_channel period.

Parameters

ul_channel	Channel number.
duty	Duty cycle value.

void PWMC_SetFaultMode	(	Pwm *	pPwm,
		uint32_t	mode
	)

Set PWM fault mode.

Parameters

mode	Bitwise OR of fault mode.

void PWMC_SetFaultProtectionValue	(	Pwm *	pPwm,
		uint32_t	value
	)

Set PWM fault protection value.

Parameters

value Bitwise OR of fault protection value.

void PWMC_SetOverrideValue	(	Pwm *	pPwm,
		uint32_t	value
	)

Set PWM output override value.

Parameters

value Bitwise OR of output override value.

void PWMC_SetPeriod	(	Pwm *	pPwm,
		uint32_t	ul_channel,
		uint16_t	period
	)

Sets the period value used by a PWM ul_channel.

This function writes directly to the CPRD register if the ul_channel is disabled; otherwise, it uses the update register CPRDUPD.

Parameters

ul_channel	Channel number.
period	Period value.

void PWMC_SetSyncChannelUpdatePeriod	(	Pwm *	pPwm,
		uint8_t	period
	)

Sets the update period of the synchronous channels. This function writes directly to the SCUP register if the ul_channel #0 is disabled; otherwise it uses the update register SCUPUPD.

Parameters

period update period.

void PWMC_SetSyncChannelUpdateUnlock ( Pwm * pPwm )

Sets synchronous channels update unlock.

Note: If the UPDM field is set to 0, writing the UPDULOCK bit to 1 triggers the update of the period value, the duty-cycle and the dead-time values of synchronous channels at the beginning of the next PWM period. If the field UPDM is set to 1 or 2, writing the UPDULOCK bit to 1 triggers only the update of the period value and of the dead-time values of synchronous channels. This bit is automatically reset when the update is done.

uint8_t PWMC_WriteBuffer	(	Pwm *	pwmc,
		void *	pvBuffer,
		uint32_t	length
	)

Sends the contents of buffer through a PWMC peripheral, using the PDC to take care of the transfer.

Note: Duty cycle of syncronous channels can update by PDC when the field UPDM (Update Mode) in the PWM_SCM register is set to 2.

Parameters

pwmc	Pointer to an Pwm instance.
pvBuffer	Data buffer to send.
length	Length of the data buffer.

Functions

Detailed Description

Function Documentation