TMS320F280049C: 设置相位差的问题

下面是【epwm_ex3_synchronization.c】的全部代码，没看到有设置相位差的具体代码  ？

//#############################################################################
//
// FILE: epwm_ex3_synchronization.c
//
// TITLE: ePWM Using The Synch Chain and Phase Shift.
//
//! \addtogroup driver_example_list
//! <h1>ePWM Synchronization</h1>
//!
//! This example configures ePWM1, ePWM2, ePWM3 and ePWM4 as follows
//! - ePWM1 without phase shift as sync source
//! - ePWM2 with phase shift of 300 TBCLKs
//! - ePWM3 with phase shift of 600 TBCLKs
//! - ePWM4 with phase shift of 900 TBCLKs
//!
//! \b External \b Connections \n
//! - GPIO0 EPWM1A
//! - GPIO1 EPWM1B
//! - GPIO2 EPWM2A
//! - GPIO3 EPWM2B
//! - GPIO4 EPWM3A
//! - GPIO5 EPWM3B
//! - GPIO6 EPWM4A
//! - GPIO7 EPWM4B
//!
//! \b Watch \b Variables \n
//! - None.
//
//#############################################################################
//
//
// $Copyright:
// Copyright (C) 2023 Texas Instruments Incorporated - http://www.ti.com/
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions
// are met:
//
// Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
//
// Redistributions in binary form must reproduce the above copyright
// notice, this list of conditions and the following disclaimer in the
// documentation and/or other materials provided with the
// distribution.
//
// Neither the name of Texas Instruments Incorporated nor the names of
// its contributors may be used to endorse or promote products derived
// from this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
// $
//#############################################################################

//
// Included Files
//
#include "driverlib.h"
#include "device.h"
#include "board.h"

__interrupt void epwm1ISR(void);
__interrupt void epwm2ISR(void);
__interrupt void epwm3ISR(void);
__interrupt void epwm4ISR(void);

//
// Main
//
void main(void)
{
//
// Initialize device clock and peripherals
//
Device_init();

//
// Disable pin locks and enable internal pull ups.
//
Device_initGPIO();

//
// Initialize PIE and clear PIE registers. Disables CPU interrupts.
//
Interrupt_initModule();

//
// Initialize the PIE vector table with pointers to the shell Interrupt
// Service Routines (ISR).
//
Interrupt_initVectorTable();

//
// Assign the interrupt service routines to ePWM interrupts
//
Interrupt_register(INT_EPWM1, &epwm1ISR);
Interrupt_register(INT_EPWM2, &epwm2ISR);
Interrupt_register(INT_EPWM3, &epwm3ISR);
Interrupt_register(INT_EPWM4, &epwm4ISR);

// Disable sync(Freeze clock to PWM as well). GTBCLKSYNC is applicable
// only for multiple core devices. Uncomment the below statement if
// applicable.
//
// SysCtl_disablePeripheral(SYSCTL_PERIPH_CLK_GTBCLKSYNC);
SysCtl_disablePeripheral(SYSCTL_PERIPH_CLK_TBCLKSYNC);

//

// Configure GPIO0/1 , GPIO2/3 and GPIO4/5 and GPIO6/7 as
// ePWM1A/1B, ePWM2A/2B, ePWM3A/3B, ePWM4A/4B pins respectively
// Configure EPWM Modules
//
Board_init();

//
// Enable sync and clock to PWM
//
SysCtl_enablePeripheral(SYSCTL_PERIPH_CLK_TBCLKSYNC);

//
// Enable ePWM interrupts
//
Interrupt_enable(INT_EPWM1);
Interrupt_enable(INT_EPWM2);
Interrupt_enable(INT_EPWM3);
Interrupt_enable(INT_EPWM4);

//
// Enable Global Interrupt (INTM) and realtime interrupt (DBGM)
//
EINT;
ERTM;

//
// IDLE loop. Just sit and loop forever (optional):
//
for(;;)
{

}
}

//
// epwm1ISR - ePWM 1 ISR
//
__interrupt void epwm1ISR(void)
{
//
// Clear INT flag for this timer
//
EPWM_clearEventTriggerInterruptFlag(myEPWM1_BASE);

//
// Acknowledge interrupt group
//
Interrupt_clearACKGroup(INTERRUPT_ACK_GROUP3);
}

//
// epwm2ISR - ePWM 2 ISR
//
__interrupt void epwm2ISR(void)
{
//
// Clear INT flag for this timer
//
EPWM_clearEventTriggerInterruptFlag(myEPWM2_BASE);

//
// Acknowledge interrupt group
//
Interrupt_clearACKGroup(INTERRUPT_ACK_GROUP3);
}

//
// epwm3ISR - ePWM 3 ISR
//
__interrupt void epwm3ISR(void)
{
//
// Clear INT flag for this timer
//
EPWM_clearEventTriggerInterruptFlag(myEPWM3_BASE);

//
// Acknowledge interrupt group
//
Interrupt_clearACKGroup(INTERRUPT_ACK_GROUP3);
}

//
// epwm4ISR - ePWM 4 ISR
//
__interrupt void epwm4ISR(void)
{
//
// Clear INT flag for this timer
//
EPWM_clearEventTriggerInterruptFlag(myEPWM4_BASE);

//
// Acknowledge interrupt group
//
Interrupt_clearACKGroup(INTERRUPT_ACK_GROUP3);
}