Epwm.h File Reference

PWM Interface Routines. More...

#include "TIMotorLIB.h"
#include "SFO_V5.h"
#include "IQConstants.h"
#include "Utils.h"

Data Structures
struct	PWM3phConfiguration
	three phase PWM configuration More...
Defines
#define	EPWM1_INT_ACK (0x1);
#define	EPWM2_INT_ACK (0x2);
#define	EPWM3_INT_ACK (0x4);
#define	EPWM4_INT_ACK (0x8);
#define	EPWM5_INT_ACK (0x10);
#define	EPWM6_INT_ACK (0x20);
#define	PWM_OUTPUTS_SIZE (12)
	number of pwm outputs
Enumerations
enum	EPWMX { EPWMA, EPWMB }
	select EPWM device More...
enum	PHSEN { MASTERPWM, SLAVEPWM }
	select device as master or slave More...
enum	ePWMenum { PWM1 = 0, PWM2 = 1, PWM3 = 2, PWM4 = 3, PWM5 = 4, PWM6 = 5 }
	access to pwm devices individually More...
enum	PWMMODE { NORMAL_MODE, HRPWM_MODE }
	select normal mode or high resolution mode More...
enum	PWMCARRIER { SAWTOOTH = TB_COUNT_UP, TRIANGLE = TB_COUNT_UPDOWN }
	select carrier signal (sawtooth or triangle) More...
enum	PWMMODULATION { SYMMETRICAL = CC_CTR_ZERO, ASYMMETRICAL = CC_CTR_ZERO_PRD }
	select modulation (symmetrical, asymmetrical) for triangle pwm carrier More...
enum	INTSEL { CTR_ZERO = ET_CTR_ZERO, CTR_PRD = ET_CTR_PRD }
	interrupt generation More...
enum	ePWMSOC { SOCNULL = 0, SOCA = 1, SOCB = 2 }
	start of conversion More...
enum	SOCTrigger { EvTBeqZERO = 1, EvTBeqPRD = 2, EvTBCNTeqCMPAI = 4, EvTBCNTeqCMPAD = 5, EvTBCNTeqCMPBI = 6, EvTBCNTeqCMPBD = 7 }
	triggers More...
enum	sideEnum { TOP = 0, BOTTOM = 6 }
	select top or bottom switch (A --> TOP, B --> BOTTOM) More...
enum	SWITCHLOGIC { NEG_LOGIC = 1, POS_LOGIC = 2 }
	select switch logic More...
Functions
void	BindPWMOutputs (void)
void	InitPWMPeripheralClocks (void)
	Init clocks on PWM inputs EPWMA/B depending on the configuration stored in pwmConf.epwmX.
void	InitPWMAPeripheralClocks (void)
	Init clocks on PWM inputs EPWMA.
void	InitPWMBPeripheralClocks (void)
	Init clocks on PWM inputs EPWMB.
void	InitEPWMGpio (ePWMenum PWM)
void	InitTzGpio (void)
void	InitSinglePWMOutput (void(*interruptFCN)(void), ePWMenum PWM, Uint16 tpwm_us, PWMMODE pwmMode, PWMCARRIER pwmCarrier, PWMMODULATION modulation, INTSEL intSel, SWITCHLOGIC switchLogic)
void	InitComplementaryPWMOutput (void(*interruptFCN)(void), ePWMenum PWM, Uint16 tpwm_us, Uint16 db_us, PWMMODE pwmMode, PWMCARRIER pwmCarrier, PWMMODULATION modulation, INTSEL intSel, SWITCHLOGIC switchLogic)
void	Init3phPWM (void(*interruptFCN)(void), EPWMX epwmX, Uint16 tpwm_us, Uint16 db_us, PWMCARRIER pwmCarrier, PWMMODULATION modulation, INTSEL intSel, _iq vBus, ePWMSOC soc, SWITCHLOGIC switchLogic)
void	ConfigurePWMLeg (volatile struct EPWM_REGS *pwmPtr, PHSEN master, Uint16 tpwm_us, Uint16 db_us, PWMCARRIER pwmCarrier, PWMMODULATION modulation, unsigned int polSel)
void	AddEventTrigger (volatile struct EPWM_REGS *pwmPtr, ePWMSOC soc, SOCTrigger trigger)
static void	SetEnablePWMInput (Uint16 *input)
static void	UpdateEPWM (ePWMenum PWM, sideEnum side, _iq cmp)
static void	UpdateEPWMDuty (ePWMenum PWM, sideEnum side, _iq duty)
static void	UpdateHRPWM (ePWMenum PWM, _iq cmp)
static void	UpdatePWM3ph (_iq vas, _iq vbs, _iq vcs, char saturate)
static void	UpdatePWMA3ph (_iq vas, _iq vbs, _iq vcs, char saturate)
static void	UpdatePWMB3ph (_iq vas, _iq vbs, _iq vcs, char saturate)
static void	UpdatePWMDuty3ph (_iq vad, _iq vbd, _iq vcd)
static void	UpdatePWMADuty3ph (_iq vad, _iq vbd, _iq vcd)
static void	UpdatePWMBDuty3ph (_iq vad, _iq vbd, _iq vcd)
static void	ForceSingleEPWM (ePWMenum PWM, sideEnum side, Uint16 level)
	Force EPWM values (spru791a.pdf, pp. 100).
static void	_ForceSingleEPWM (volatile struct EPWM_REGS *pwmPtr, sideEnum side, Uint16 level)
static void	ForceEPWM (ePWMenum PWM, sideEnum side, Uint16 level)
static void	EnablePWM (Uint16 enable)
static void	EnableEPWMModuleTBCLK (void)
	Enable device clock.
static void	EpwmPIEAck (volatile struct EPWM_REGS *epwmRegs)
static void	EpwmAPIEAck (void)
static void	EpwmBPIEAck (void)
Variables
struct PWM3phConfiguration	pwmConf
struct PWM3phConfiguration pwmAConf	pwmBConf
struct EPWM_REGS *	ePWM []
	acess pointers to pwm configuration registers
volatile Uint16 *	cmpPtr [PWM_OUTPUTS_SIZE]
	fast access to EPWM comparison registers
int	MEP_ScaleFactor [PWM_CH]
int	MEP_SF1
int	MEP_SF2
int	MEP_SF3
int	MEP_SF4
int	MEP_SF5
int	MEP_SF6

Detailed Description

PWM Interface Routines.

File Name : Epwm.h Project : TIMotorLIB

TI Doc: SPRU791, SPRUG04 (newer), spraai1

Author:: Pablo Garcia (pgarcia@isa.uniovi.es)

Date:: 2007

Definition in file Epwm.h.

Define Documentation

#define EPWM1_INT_ACK (0x1);

Definition at line 52 of file Epwm.h.

#define EPWM2_INT_ACK (0x2);

Definition at line 53 of file Epwm.h.

#define EPWM3_INT_ACK (0x4);

Definition at line 54 of file Epwm.h.

#define EPWM4_INT_ACK (0x8);

Definition at line 55 of file Epwm.h.

#define EPWM5_INT_ACK (0x10);

Definition at line 56 of file Epwm.h.

#define EPWM6_INT_ACK (0x20);

Definition at line 57 of file Epwm.h.

#define PWM_OUTPUTS_SIZE (12)

number of pwm outputs

Definition at line 60 of file Epwm.h.

Enumeration Type Documentation

enum ePWMenum

access to pwm devices individually

Enumerator:

PWM1	EPWM1A/1B.
PWM2	EPWM2A/2B.
PWM3	EPWM3A/3B.
PWM4	EPWM4A/4B.
PWM5	EPWM5A/5B.
PWM6	EPWM6A/6B.

Definition at line 79 of file Epwm.h.

enum ePWMSOC

start of conversion

Enumerator:

SOCNULL	A/D start of conversion decoupled from EPWM.
SOCA	EPWM generates SOC for sequencer A.
SOCB	EPWM generates SOC for sequencer B.

Definition at line 113 of file Epwm.h.

enum EPWMX

select EPWM device

Enumerator:

EPWMA	EPWMA.
EPWMB	EPWMB.

Definition at line 67 of file Epwm.h.

enum INTSEL

interrupt generation

Enumerator:

CTR_ZERO	interrupt on counter reach zero
CTR_PRD	interrupt on counter reach period

Definition at line 107 of file Epwm.h.

enum PHSEN

select device as master or slave

Enumerator:

MASTERPWM	EPWM is master.
SLAVEPWM	EPWM is slave.

Definition at line 73 of file Epwm.h.

enum PWMCARRIER

select carrier signal (sawtooth or triangle)

Enumerator:

SAWTOOTH	sawtooth carrier
TRIANGLE	triangle carrier

Definition at line 95 of file Epwm.h.

enum PWMMODE

select normal mode or high resolution mode

Enumerator:

NORMAL_MODE	normal mode
HRPWM_MODE	high resolution mode

Definition at line 89 of file Epwm.h.

enum PWMMODULATION

select modulation (symmetrical, asymmetrical) for triangle pwm carrier

Enumerator:

SYMMETRICAL	symmetrical modulation
ASYMMETRICAL	asymmetrical modulation (update on zero and period)

Definition at line 101 of file Epwm.h.

enum sideEnum

select top or bottom switch (A --> TOP, B --> BOTTOM)

Enumerator:

TOP	TOP switches.
BOTTOM	BOTTOM switches.

Definition at line 130 of file Epwm.h.

enum SOCTrigger

triggers

Enumerator:

EvTBeqZERO	trigger A/D on zero
EvTBeqPRD	trigger A/D of period
EvTBCNTeqCMPAI	trigger A/D on compare math EPWMA (increasing)
EvTBCNTeqCMPAD	trigger A/D on compare math EPWMA (decreasing)
EvTBCNTeqCMPBI	trigger A/D on compare math EPWMB (increasing)
EvTBCNTeqCMPBD	trigger A/D on compare math EPWMB (decreasing)

Definition at line 120 of file Epwm.h.

enum SWITCHLOGIC

select switch logic

Enumerator:

NEG_LOGIC
POS_LOGIC

Definition at line 136 of file Epwm.h.

Function Documentation

static void _ForceSingleEPWM	(	volatile struct EPWM_REGS *	pwmPtr,
		sideEnum	side,
		Uint16	level
	)			`[inline, static]`

Force Single PWM output to a given level

Parameters:

	pwmPtr	Pointer to the EPWM_REGS register which output wants to be forced.
	side	selection of TOP/BOTTOM output
	level	0 --> low, 1 --> high

Definition at line 541 of file Epwm.h.

void AddEventTrigger	(	volatile struct EPWM_REGS *	pwmPtr,
		ePWMSOC	soc,
		SOCTrigger	trigger
	)

Selects where the Start of Conversion (SOC) signal is generated

Parameters:

	pwmPtr,:	Pointer to EPWM_REGS register for the configuration
	soc,:	Which sequencer is triggered (SOCNULL/SOCA/SOCB)
	trigger,:	EvTBeqZERO trigger A/D on zero EvTBeqPRD trigger A/D of period EvTBCNTeqCMPAI trigger A/D on compare math EPWMA (increasing) EvTBCNTeqCMPAD trigger A/D on compare math EPWMA (decreasing) EvTBCNTeqCMPBI trigger A/D on compare math EPWMB (increasing) EvTBCNTeqCMPBD trigger A/D on compare math EPWMB (decreasing)

Definition at line 378 of file Epwm.c.

void BindPWMOutputs ( void )

Definition at line 69 of file Epwm.c.

void ConfigurePWMLeg	(	volatile struct EPWM_REGS *	pwmPtr,
		PHSEN	master,
		Uint16	tpwm_us,
		Uint16	db_us,
		PWMCARRIER	pwmCarrier,
		PWMMODULATION	modulation,
		unsigned int	polSel
	)

Configure two switches to work in complementary mode

Parameters:

	pwmPtr,:	Pointer to EPWM_REGS register for the configuration of the switches pair
	master,:	MASTERPWM/SLAVEPWM. Selects if the clocking signal is generated by the configured output or is passed externally.
	tpwm_us,:	switching period in us
	db_us,:	dead time value in us
	pwmCarrier,:	select SAWTOOTH or TRIANGLE carrier
	modulation,:	SYMMETRICAL/ASYMMETRICAL. If symmetrical, comparison values are updated when the counter reaches 0. If asymmetrical, comparison values are updated both at 0 and period of the counter
	polSel,:	Polarity selection for dead time generation (DB_ACTIVE_LOC/DB_ACTIVE_HIC)

Definition at line 332 of file Epwm.c.

static void EnableEPWMModuleTBCLK ( void ) [inline, static]

Enable device clock.

Examples:: TIMotorLIBExample2/main.c, TIMotorLIBExample3/main.c, TIMotorLIBExampleHrdw/main.c, and TIMotorLIBExampleSw/main.c.

Definition at line 588 of file Epwm.h.

static void EnablePWM ( Uint16 enable ) [inline, static]

Deprecated:: : Not used anymore

Definition at line 577 of file Epwm.h.

static void EpwmAPIEAck ( void ) [inline, static]

ACK interrupt for EPWMA. This function MUST be called if more interrupts from PIEACK_GROUP3 are wanted

Examples:: TIMotorLIBExampleHrdw/main.c, and TIMotorLIBExampleSw/main.c.

Definition at line 617 of file Epwm.h.

static void EpwmBPIEAck ( void ) [inline, static]

ACK interrupt for EPWMB. This function MUST be called if more interrupts from PIEACK_GROUP3 are wanted

Examples:: TIMotorLIBExampleHrdw/main.c, and TIMotorLIBExampleSw/main.c.

Definition at line 628 of file Epwm.h.

static void EpwmPIEAck ( volatile struct EPWM_REGS * epwmRegs ) [inline, static]

ACK interrupt for epwmRegs. This function MUST be called if more interrupts from PIEACK_GROUP3 are wanted

Parameters:

epwmRegs

pointer to EPWM_REGS register which interrupt is ACK

Definition at line 603 of file Epwm.h.

static void ForceEPWM	(	ePWMenum	PWM,
		sideEnum	side,
		Uint16	level
	)			`[inline, static]`

Force Single PWM output to a given level

Parameters:

	PWM	output selection by identifier (PWM1..PWM6)
	side	selection of TOP/BOTTOM output
	level	0 --> low, 1 --> high

Definition at line 563 of file Epwm.h.

static void ForceSingleEPWM	(	ePWMenum	PWM,
		sideEnum	side,
		Uint16	level
	)			`[inline, static]`

Force EPWM values (spru791a.pdf, pp. 100).

Definition at line 528 of file Epwm.h.

void Init3phPWM	(	void(*)(void)	interruptFCN,
		EPWMX	epwmX,
		Uint16	tpwm_us,
		Uint16	db_us,
		PWMCARRIER	pwmCarrier,
		PWMMODULATION	modulation,
		INTSEL	intSel,
		_iq	vBus,
		ePWMSOC	soc,
		SWITCHLOGIC	switchLogic
	)

Intializes a set of EPWM outputs to drive a three phase inverter

Parameters:

	interruptFCN,:	pointer to ISR executed when intSel condition is reached. If 0, no function is called
	epwmX,:	Selection of PWM input to be configured (PWM1...PWM6)
	tpwm_us,:	switching period in us
	db_us,:	dead time value in us
	pwmCarrier,:	select SAWTOOTH or TRIANGLE carrier
	modulation,:	SYMMETRICAL/ASYMMETRICAL. If symmetrical, comparison values are updated when the counter reaches 0. If asymmetrical, comparison values are updated both at 0 and period of the counter
	intSel,:	CTR_ZERO/CTR_PRD. Call the ISR when the counter reach 0 or when the counter reach the period.
	vBus,:	DC bus voltage in V (

Todo:: : Eliminate this parameter)

Parameters:

	soc,:	SOCNULL/SOCA/SOCB. Generates a start of conversion trigger for none, A or B sequencer respectively
	switchLogic,:	POS_LOGIC/NEG_LOGIC. Select logic for the switches

Definition at line 247 of file Epwm.c.

void InitComplementaryPWMOutput	(	void(*)(void)	interruptFCN,
		ePWMenum	PWM,
		Uint16	tpwm_us,
		Uint16	db_us,
		PWMMODE	pwmMode,
		PWMCARRIER	pwmCarrier,
		PWMMODULATION	modulation,
		INTSEL	intSel,
		SWITCHLOGIC	switchLogic
	)

Intializes a given EPWM pair in complementary mode

Parameters:

	interruptFCN,:	pointer to ISR executed when intSel condition is reached. If 0, no function is called
	PWM,:	Selection of PWM input to be configured (PWM1...PWM6)
	tpwm_us,:	switching period in us
	db_us,:	dead time value in us
	pwmMode,:	normal mode (16 bits) or high resolution (

Todo:: ) (32 bits)

Parameters:

	pwmCarrier,:	select SAWTOOTH or TRIANGLE carrier
	modulation,:	SYMMETRICAL/ASYMMETRICAL. If symmetrical, comparison values are updated when the counter reachs 0. If asymmetrical, comparison values are updated both at 0 and period of the counter
	intSel,:	CTR_ZERO/CTR_PRD. Call the ISR when the counter reach 0 or when the counter reach the period.
	switchLogic,:	POS_LOGIC/NEG_LOGIC. Select logic for the switches

Definition at line 201 of file Epwm.c.

void InitEPWMGpio ( ePWMenum PWM )

Configure needed GPIO ports to be used by EPWM outputs. Affected GPIO inputs are: EPWM1: GPIO0, GPIO1 EPWM2: GPIO2, GPIO3 EPWM3: GPIO4, GPIO5 EPWM4: GPIO6, GPIO7 EPWM5: GPIO8, GPIO9 EPWM6: GPIO10, GPIO11 Actions taken:

Enable internal pull-up (GpioCtrlRegs.GPAPUD.bit.GPIOX=0)
Configure GPIOX as EPWM (GpioCtrlRegs.GPAMUX1.bit.GPIOX=1)
Parameters:

PWM is the pwm input to be used

Definition at line 444 of file Epwm.c.

void InitPWMAPeripheralClocks ( void )

Init clocks on PWM inputs EPWMA.

Definition at line 416 of file Epwm.c.

void InitPWMBPeripheralClocks ( void )

Init clocks on PWM inputs EPWMB.

Definition at line 430 of file Epwm.c.

void InitPWMPeripheralClocks ( void )

Init clocks on PWM inputs EPWMA/B depending on the configuration stored in pwmConf.epwmX.

Definition at line 395 of file Epwm.c.

void InitSinglePWMOutput	(	void(*)(void)	interruptFCN,
		ePWMenum	PWM,
		Uint16	tpwm_us,
		PWMMODE	pwmMode,
		PWMCARRIER	pwmCarrier,
		PWMMODULATION	modulation,
		INTSEL	intSel,
		SWITCHLOGIC	switchLogic
	)

Initializes a given EPWM

Parameters:

	interruptFCN,:	pointer to ISR executed when intSel condition is reached. If 0, no function is called
	PWM,:	Selection of PWM input to be configured (PWM1...PWM6)
	tpwm_us,:	switching period in us
	pwmMode,:	normal mode (16 bits) or high resolution (

Todo:: ) (32 bits)

Parameters:

	pwmCarrier,:	select SAWTOOTH or TRIANGLE carrier
	modulation,:	SYMMETRICAL/ASYMMETRICAL. If symmetrical, comparison values are updated when the counter reaches 0. If asymmetrical, comparison values are updated both at 0 and period of the counter
	intSel,:	CTR_ZERO/CTR_PRD. Call the ISR when the counter reach 0 or when the counter reach the period.
	switchLogic,:	POS_LOGIC/NEG_LOGIC. Select logic for the drived switch

Definition at line 122 of file Epwm.c.

void InitTzGpio ( void )

Configure needed GPIO ports to be used by EPWM Trip-zone submodule. Affected GPIO inputs are: TZ1: GPIO12 TZ2: GPIO13 TZ3: GPIO14 TZ4: GPIO15 TZ5: GPIO16 TZ6: GPIO17 Actions taken:

Enable internal pull-up (GpioCtrlRegs.GPAPUD.bit.GPIOX=0)
Asynch input GPIOX (GpioCtrlRegs.GPAQSEL1.bit.GPIOX = 3)
Configure GPIOX as TZX (GpioCtrlRegs.GPAMUXn.bit.GPIOX = 1)

Definition at line 479 of file Epwm.c.

static void SetEnablePWMInput ( Uint16 * input ) [inline, static]

Definition at line 346 of file Epwm.h.

static void UpdateEPWM	(	ePWMenum	PWM,
		sideEnum	side,
		_iq	cmp
	)			`[inline, static]`

Definition at line 353 of file Epwm.h.

static void UpdateEPWMDuty	(	ePWMenum	PWM,
		sideEnum	side,
		_iq	duty
	)			`[inline, static]`

Definition at line 360 of file Epwm.h.

static void UpdateHRPWM	(	ePWMenum	PWM,
		_iq	cmp
	)			`[inline, static]`

Definition at line 367 of file Epwm.h.

static void UpdatePWM3ph	(	_iq	vas,
		_iq	vbs,
		_iq	vcs,
		char	saturate
	)			`[inline, static]`

Deprecated:: : Not use UpdatePWM3ph in new projects. Instead, UpdatePWMA3ph or UpdatePWMB3ph

Deprecated:: : Use UpdatePWMA3ph or UpdatePWMB3ph instead.

Todo:: These operation need to be changed if 2*OFFSETPWM > MAX IQ (4096)

(pwmConf.cmp1) = (Uint16)(_IQtoF(_IQmpy(vas,pwmConf.OFFSETPWMDIVVBUS))+pwmConf.OFFSETPWM); (pwmConf.cmp2) = (Uint16)(_IQtoF(_IQmpy(vbs,pwmConf.OFFSETPWMDIVVBUS))+pwmConf.OFFSETPWM); (pwmConf.cmp3) = (Uint16)(_IQtoF(_IQmpy(vcs,pwmConf.OFFSETPWMDIVVBUS))+pwmConf.OFFSETPWM);

(pwmConf.cmp1) = (Uint16)(pwmConf.OFFSETPWM - _IQtoF(_IQmpy(vas,pwmConf.OFFSETPWMDIVVBUS))); (pwmConf.cmp2) = (Uint16)(pwmConf.OFFSETPWM - _IQtoF(_IQmpy(vbs,pwmConf.OFFSETPWMDIVVBUS))); (pwmConf.cmp3) = (Uint16)(pwmConf.OFFSETPWM - _IQtoF(_IQmpy(vcs,pwmConf.OFFSETPWMDIVVBUS)));

Examples:: TIMotorLIBExample2/main.c, and TIMotorLIBExample3/main.c.

Definition at line 378 of file Epwm.h.

static void UpdatePWMA3ph	(	_iq	vas,
		_iq	vbs,
		_iq	vcs,
		char	saturate
	)			`[inline, static]`

Update EPWMA configured for three phase systems

Parameters:

	vas	voltage for phase a
	vbs	voltage for phase b
	vcs	voltage for phase c
	saturate	saturate to Vbus/2

Todo:: : Saturate using IQsat functions

(pwmAConf.cmp1) = (Uint16)(pwmAConf.OFFSETPWM - _IQtoF(_IQmpy(vas,pwmAConf.OFFSETPWMDIVVBUS))); (pwmAConf.cmp2) = (Uint16)(pwmAConf.OFFSETPWM - _IQtoF(_IQmpy(vbs,pwmAConf.OFFSETPWMDIVVBUS))); (pwmAConf.cmp3) = (Uint16)(pwmAConf.OFFSETPWM - _IQtoF(_IQmpy(vcs,pwmAConf.OFFSETPWMDIVVBUS)));

Definition at line 413 of file Epwm.h.

static void UpdatePWMADuty3ph	(	_iq	vad,
		_iq	vbd,
		_iq	vcd
	)			`[inline, static]`

update EPWMA duty for three phase configuration: cmpX = 2*OFFSETPWM(1 - vXd) vXd = [0,1]

Parameters:

	vad	duty for phase a
	vbd	duty for phase b
	vcd	duty for phase c

(pwmAConf.cmp1) = (Uint16)((pwmAConf.OFFSETPWM << 1) - _IQ16toF(_IQ16mpy(_IQtoIQ16(vad),(_IQ16(pwmAConf.OFFSETPWM << 1))))); (pwmAConf.cmp2) = (Uint16)((pwmAConf.OFFSETPWM << 1) - _IQ16toF(_IQ16mpy(_IQtoIQ16(vbd),(_IQ16(pwmAConf.OFFSETPWM << 1))))); (pwmAConf.cmp3) = (Uint16)((pwmAConf.OFFSETPWM << 1) - _IQ16toF(_IQ16mpy(_IQtoIQ16(vcd),(_IQ16(pwmAConf.OFFSETPWM << 1)))));

Examples:: TIMotorLIBExampleHrdw/main.c, and TIMotorLIBExampleSw/main.c.

Definition at line 484 of file Epwm.h.

static void UpdatePWMB3ph	(	_iq	vas,
		_iq	vbs,
		_iq	vcs,
		char	saturate
	)			`[inline, static]`

Update EPWMB configured for three phase systems

Parameters:

	vas	voltage for phase a
	vbs	voltage for phase b
	vcs	voltage for phase c
	saturate	saturate to Vbus/2

Todo:: : Saturate using IQsat functions

(pwmBConf.cmp1) = (Uint16)(pwmBConf.OFFSETPWM - _IQtoF(_IQmpy(vas,pwmBConf.OFFSETPWMDIVVBUS))); (pwmBConf.cmp2) = (Uint16)(pwmBConf.OFFSETPWM - _IQtoF(_IQmpy(vbs,pwmBConf.OFFSETPWMDIVVBUS))); (pwmBConf.cmp3) = (Uint16)(pwmBConf.OFFSETPWM - _IQtoF(_IQmpy(vcs,pwmBConf.OFFSETPWMDIVVBUS)));

Definition at line 438 of file Epwm.h.