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	SYNCOSEL { SYNC_IN = 0, SYNC_CTR_ZERO = 1, SYNC_CTR_CMPB = 2, SYNC_DISABLE = 3 }
	select synchronization output mode 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, asymetrical) 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 }
	SOC triggers. More...
enum	sideEnum { xA = 0, xB = 6 }
	select A or B switch 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	InitPWMSide (ePWMenum PWM, sideEnum side, PWMMODULATION modulation, SWITCHLOGIC switchLogic)
void	InitSinglePWMOutput (void(*interruptFCN)(void), ePWMenum PWM, sideEnum side, Uint16 tpwm_us, PHSEN phSen, SYNCOSEL syncMode, PWMMODE pwmMode, PWMCARRIER pwmCarrier, PWMMODULATION modulation, INTSEL intSel, SWITCHLOGIC switchLogic)
void	InitComplementaryPWMOutput (void(*interruptFCN)(void), ePWMenum PWM, Uint16 tpwm_us, Uint16 db_us, PHSEN phSen, 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, SOCTrigger trigger, 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 87 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 genrates SOC for sequencer B.

Definition at line 121 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 115 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 103 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 97 of file Epwm.h.

enum PWMMODULATION

select modulation (symmetrical, asymetrical) for triangle pwm carrier

Enumerator:

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

Definition at line 109 of file Epwm.h.

enum sideEnum

select A or B switch

Enumerator:

xA	A switches.
xB	B switches.

Definition at line 139 of file Epwm.h.

enum SOCTrigger

SOC 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 129 of file Epwm.h.

enum SWITCHLOGIC

select switch logic

Enumerator:

NEG_LOGIC
POS_LOGIC

Definition at line 145 of file Epwm.h.

enum SYNCOSEL

select synchronization output mode

Enumerator:

SYNC_IN	synchronize with input
SYNC_CTR_ZERO	Time-base counter equal to zero.
SYNC_CTR_CMPB	Time-base counter equal to counter compare B.
SYNC_DISABLE	Disable signal.

Definition at line 79 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 xA/xB output
	level	0 --> low, 1 --> high

Definition at line 570 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 394 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 reachs 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 348 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 617 of file Epwm.h.

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

Deprecated:: : Not used anymore

Definition at line 606 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 646 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 657 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 632 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 xA/xB output
	level	0 --> low, 1 --> high

Definition at line 592 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 557 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,
		SOCTrigger	trigger,
		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 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.
	vBus,:	DC bus voltage in V (

Todo:: : Eliminate this parameter)

Parameters:

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

Definition at line 263 of file Epwm.c.

void InitComplementaryPWMOutput	(	void(*)(void)	interruptFCN,
		ePWMenum	PWM,
		Uint16	tpwm_us,
		Uint16	db_us,
		PHSEN	phSen,
		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
	phSen,:	select device as master or slave (MASTERPWM/SLAVEPWM)
	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 217 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 460 of file Epwm.c.

void InitPWMAPeripheralClocks ( void )

Init clocks on PWM inputs EPWMA.

Definition at line 432 of file Epwm.c.

void InitPWMBPeripheralClocks ( void )

Init clocks on PWM inputs EPWMB.

Definition at line 446 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 411 of file Epwm.c.

void InitPWMSide	(	ePWMenum	PWM,
		sideEnum	side,
		PWMMODULATION	modulation,
		SWITCHLOGIC	switchLogic
	)

Intializes a given EPWM side (A/B). This function only can be called after one output for the given EPWM module has been configured. Example: InitSinglePWMOutput(pwmInterrupt, PWM1, xA, TPWMA_US, MASTERPWM, SYNC_DISABLE, NORMAL_MODE, TRIANGLE, SYMMETRICAL, CTR_ZERO, POS_LOGIC); InitPWMSide(PWM1, xB, SYMMETRICAL, POS_LOGIC);

Parameters:

	PWM,:	Selection of PWM input to be configured (PWM1...PWM6)
	sideEnum,:	Selection of A/B switches
	modulation,:	SYMMETRICAL/ASYMMETRICAL. If symmetrical, comparison
	switchLogic,:	POS_LOGIC/NEG_LOGIC. Select logic for the drived switch

Definition at line 122 of file Epwm.c.

void InitSinglePWMOutput	(	void(*)(void)	interruptFCN,
		ePWMenum	PWM,
		sideEnum	side,
		Uint16	tpwm_us,
		PHSEN	phSen,
		SYNCOSEL	syncMode,
		PWMMODE	pwmMode,
		PWMCARRIER	pwmCarrier,
		PWMMODULATION	modulation,
		INTSEL	intSel,
		SWITCHLOGIC	switchLogic
	)

Intializes 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)
	sideEnum,:	Selection of A/B switches
	tpwm_us,:	switching period in us
	pwmMode,:	normal mode (16 bits) or high resolution (

Todo:: ) (32 bits)

Parameters:

	PHSEN,:	select device as master or slave (MASTERPWM/SLAVEPWM)
	syncMode,:	Synchronization mode (see SYNCOSEL)
	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 drived switch

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 495 of file Epwm.c.

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

Definition at line 375 of file Epwm.h.

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

Definition at line 382 of file Epwm.h.

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

Definition at line 389 of file Epwm.h.

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

Definition at line 396 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)(_IQtoF(_IQmpy(vas,pwmConf.OFFSETPWMDIVVBUS))); (pwmConf.cmp2) = (Uint16)(_IQtoF(_IQmpy(vbs,pwmConf.OFFSETPWMDIVVBUS))); (pwmConf.cmp3) = (Uint16)(_IQtoF(_IQmpy(vcs,pwmConf.OFFSETPWMDIVVBUS)));

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

Definition at line 407 of file Epwm.h.

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

Update EPWMA configured for thee 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)(_IQtoF(_IQmpy(vas,pwmAConf.OFFSETPWMDIVVBUS))); (pwmAConf.cmp2) = (Uint16)(_IQtoF(_IQmpy(vbs,pwmAConf.OFFSETPWMDIVVBUS))); (pwmAConf.cmp3) = (Uint16)(_IQtoF(_IQmpy(vcs,pwmAConf.OFFSETPWMDIVVBUS)));

Definition at line 442 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 513 of file Epwm.h.

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

Update EPWMB configured for thee 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)(_IQtoF(_IQmpy(vas,pwmBConf.OFFSETPWMDIVVBUS))); (pwmBConf.cmp2) = (Uint16)(_IQtoF(_IQmpy(vbs,pwmBConf.OFFSETPWMDIVVBUS))); (pwmBConf.cmp3) = (Uint16)(_IQtoF(_IQmpy(vcs,pwmBConf.OFFSETPWMDIVVBUS)));

Definition at line 467 of file Epwm.h.