Part Number: LAUNCHXL-F28379D
Tool/software: Code Composer Studio
Hello
here i find the trip_zone program but icouldn't find the GPIO12 from Launch Pad pin out which is available in this site
this is the doc:page No:9 from Overview Users Guide
program :
//###########################################################################
//
// FILE: epwm_trip_zone.c
//
// TITLE: ePWM module using Trip-Zone submodule.
//
//! \addtogroup cpu01_example_list
//! <h1> EPWM Trip Zone Module (epwm_trip_zone)</h1>
//!
//! This example configures ePWM1 and ePWM2 as follows
//! - ePWM1 has TZ1 as one shot trip source
//! - ePWM2 has TZ1 as cycle by cycle trip source
//!
//! Initially tie TZ1 high. During the test, monitor ePWM1 or ePWM2
//! outputs on a scope. Pull TZ1 low to see the effect.
//!
//! \b External \b Connections \n
//! - EPWM1A is on GPIO0
//! - EPWM2A is on GPIO2
//! - TZ1 is on GPIO12
//!
//! This example also makes use of the Input X-BAR. GPIO12 (the external
//! trigger) is routed to the input X_BAR, from which it is routed to TZ1.
//!
//! The TZ-Event is defined such that EPWM1A will undergo a One-Shot Trip
//! and EPWM2A will undergo a Cycle-By-Cycle Trip.
//!
// _____________ __________________
// | | | |
// GPIO12 -----| I/P X-BAR |-----TZ1-----| ePWM TZ Module |-----TZ-Event
// |___________| |________________|
//
//
//
//###########################################################################
// $TI Release: F2837xD Support Library v210 $
// $Release Date: Tue Nov 1 14:46:15 CDT 2016 $
// $Copyright: Copyright (C) 2013-2016 Texas Instruments Incorporated -
// http://www.ti.com/ ALL RIGHTS RESERVED $
//###########################################################################
//
// Included Files
//
#include "F28x_Project.h"
//
// Defines
//
#define EXTTrig // Leave Uncommented for Testing with External Trigger.
// Comment for Testing with ePWM Trigger.
//
// Globals
//
Uint32 EPwm1TZIntCount;
Uint32 EPwm2TZIntCount;
//
// Function Prototypes
//
void InitEPwm1Example(void);
void InitEPwm2Example(void);
void InitTzGpio(void);
__interrupt void epwm1_tzint_isr(void);
__interrupt void epwm2_tzint_isr(void);
void InitEPwmGpio_TZ(void);
//
// Main
//
void main(void)
{
//
// Step 1. Initialize System Control:
// PLL, WatchDog, enable Peripheral Clocks
// This example function is found in the F2837xD_SysCtrl.c file.
//
InitSysCtrl();
//
// Step 2. Initialize GPIO:
// This example function is found in the F2837xD_Gpio.c file and
// illustrates how to set the GPIO to it's default state.
//
// InitGpio();
//
// enable PWM1, and PWM2
//
CpuSysRegs.PCLKCR2.bit.EPWM1=1;
CpuSysRegs.PCLKCR2.bit.EPWM2=1;
//
// For this case just init GPIO pins for ePWM1, ePWM2, ePWM3
//
InitEPwmGpio_TZ();
InitTzGpio();
//
// Step 3. Clear all interrupts and initialize PIE vector table:
// Disable CPU interrupts
//
DINT;
//
// Initialize the PIE control registers to their default state.
// The default state is all PIE interrupts disabled and flags
// are cleared.
// This function is found in the F2837xD_PieCtrl.c file.
//
InitPieCtrl();
//
// Disable CPU interrupts and clear all CPU interrupt flags:
//
IER = 0x0000;
IFR = 0x0000;
//
// Initialize the PIE vector table with pointers to the shell Interrupt
// Service Routines (ISR).
// This will populate the entire table, even if the interrupt
// is not used in this example. This is useful for debug purposes.
// The shell ISR routines are found in F2837xD_DefaultIsr.c.
// This function is found in F2837xD_PieVect.c.
//
InitPieVectTable();
//
// Interrupts that are used in this example are re-mapped to
// ISR functions found within this file.
//
EALLOW; // This is needed to write to EALLOW protected registers
PieVectTable.EPWM1_TZ_INT = &epwm1_tzint_isr;
PieVectTable.EPWM2_TZ_INT = &epwm2_tzint_isr;
EDIS; // This is needed to disable write to EALLOW protected registers
//
// Step 4. Initialize the Device Peripherals:
//
EALLOW;
CpuSysRegs.PCLKCR0.bit.TBCLKSYNC =0;
EDIS;
InitEPwm1Example();
InitEPwm2Example();
EALLOW;
CpuSysRegs.PCLKCR0.bit.TBCLKSYNC =1;
EDIS;
//
// Step 5. User specific code, enable interrupts:
//
EPwm1TZIntCount = 0;
EPwm2TZIntCount = 0;
//
// Enable CPU INT2 which is connected to EPWM1-3 INT:
//
IER |= M_INT2;
//
// Enable EPWM INTn in the PIE: Group 3 interrupt 1-3
//
PieCtrlRegs.PIEIER2.bit.INTx1 = 1;
PieCtrlRegs.PIEIER2.bit.INTx2 = 1;
//
// Enable global Interrupts and higher priority real-time debug events:
//
EINT; // Enable Global interrupt INTM
ERTM; // Enable Global realtime interrupt DBGM
//
// Step 6. IDLE loop. Just sit and loop forever (optional):
//
for(;;)
{
asm (" NOP");
}
}
//
// epwm1_tzint_isr - EPWM1 TZ ISR
//
__interrupt void epwm1_tzint_isr(void)
{
EPwm1TZIntCount++;
//
// To Re-enable the OST Interrupt, do the following:
// EALLOW;
// EPwm1Regs.TZCLR.bit.OST = 1;
// EPwm1Regs.TZCLR.bit.INT = 1;
// EDIS;
//
//
// Acknowledge this interrupt to receive more interrupts from group 2
//
PieCtrlRegs.PIEACK.all = PIEACK_GROUP2;
}
//
// epwm2_tzint_isr - EPWM2 TZ ISR
//
__interrupt void epwm2_tzint_isr(void)
{
GpioDataRegs.GPATOGGLE.bit.GPIO11 = 1;
EPwm2TZIntCount++;
//
// Clear the flags - we will continue to take
// this interrupt until the TZ pin goes high
//
EALLOW;
EPwm2Regs.TZCLR.bit.CBC = 1;
EPwm2Regs.TZCLR.bit.INT = 1;
EDIS;
//
// Acknowledge this interrupt to receive more interrupts from group 2
//
PieCtrlRegs.PIEACK.all = PIEACK_GROUP2;
}
//
// InitEPwm1Example - Initialize EPWM1 configuration
//
void InitEPwm1Example()
{
//
// Enable TZ1 as one shot trip sources
//
EALLOW;
EPwm1Regs.TZSEL.bit.OSHT1 = 1;
//
// Set TZA
//
EPwm1Regs.TZCTL.bit.TZA = TZ_FORCE_HI;
//
// Enable TZ interrupt
//
EPwm1Regs.TZEINT.bit.OST = 1;
EDIS;
EPwm1Regs.TBPRD = 12000; // Set timer period
EPwm1Regs.TBPHS.bit.TBPHS = 0x0000; // Phase is 0
EPwm1Regs.TBCTR = 0x0000; // Clear counter
//
// Setup TBCLK
//
EPwm1Regs.TBCTL.bit.CTRMODE = TB_COUNT_UPDOWN; // Count up
EPwm1Regs.TBCTL.bit.PHSEN = TB_DISABLE; // Disable phase loading
EPwm1Regs.TBCTL.bit.HSPCLKDIV = TB_DIV4; // Clock ratio to SYSCLKOUT
EPwm1Regs.TBCTL.bit.CLKDIV = TB_DIV4;
EPwm1Regs.CMPCTL.bit.SHDWAMODE = CC_SHADOW; // Load registers every ZERO
EPwm1Regs.CMPCTL.bit.LOADAMODE = CC_CTR_ZERO;
//
// Setup compare
//
EPwm1Regs.CMPA.bit.CMPA = 6000;
//
// Set actions
//
EPwm1Regs.AQCTLA.bit.CAU = AQ_SET; // Set PWM1A on CAU
EPwm1Regs.AQCTLA.bit.CAD = AQ_CLEAR; // Clear PWM1A on CAD
}
//
// InitEPwm2Example - Initialize EPWM2 configuration
//
void InitEPwm2Example()
{
//
// Enable TZ1 as one cycle-by-cycle trip sources
//
EALLOW;
EPwm2Regs.TZSEL.bit.CBC1 = 1;
//
// Set TZA
//
EPwm2Regs.TZCTL.bit.TZA = TZ_FORCE_HI;
//
// Enable TZ interrupt
//
EPwm2Regs.TZEINT.bit.CBC = 1;
EDIS;
EPwm2Regs.TBPRD = 6000; // Set timer period
EPwm2Regs.TBPHS.bit.TBPHS = 0x0000; // Phase is 0
EPwm2Regs.TBCTR = 0x0000; // Clear counter
//
// Setup TBCLK
//
EPwm2Regs.TBCTL.bit.CTRMODE = TB_COUNT_UPDOWN; // Count up
EPwm2Regs.TBCTL.bit.PHSEN = TB_DISABLE; // Disable phase loading
EPwm2Regs.TBCTL.bit.HSPCLKDIV = TB_DIV4; // Clock ratio to SYSCLKOUT
EPwm2Regs.TBCTL.bit.CLKDIV = TB_DIV4; // Slow just to observe on
// the scope.
//
// Setup compare
//
EPwm2Regs.CMPA.bit.CMPA = 3000;
//
// Set actions
//
EPwm2Regs.AQCTLA.bit.CAU = AQ_SET; // Set PWM2A on CAU
EPwm2Regs.AQCTLA.bit.CAD = AQ_CLEAR; // Clear PWM2A on CAD
}
//
// InitTzGpio - Initialize TZ GPIOs
//
void InitTzGpio(void)
{
//
// For External Trigger, GPIO12 as the trigger for TripZone
//
GpioCtrlRegs.GPAPUD.bit.GPIO12 = 0; // Enable pull-up on GPIO12 (TZ1)
GpioCtrlRegs.GPAQSEL1.bit.GPIO12 = 3; // Asynch input GPIO12 (TZ1)
EALLOW;
InputXbarRegs.INPUT1SELECT = 12;
EDIS;
//
// For monitoring when the TZ Interrupt has been entered
//
EALLOW;
GpioCtrlRegs.GPAPUD.bit.GPIO11 = 1; // Disable pull-up on GPIO0 (EPWM1A)
GpioCtrlRegs.GPAMUX1.bit.GPIO11 = 0; // Configure GPIO0 as EPWM1A
GpioCtrlRegs.GPADIR.bit.GPIO11 = 1;
EDIS;
}
//
// InitEPwmGpio_TZ - Initialize EPWM1A and EPWM2A GPIOs
//
void InitEPwmGpio_TZ(void)
{
EALLOW;
GpioCtrlRegs.GPAPUD.bit.GPIO0 = 1; // Disable pull-up on GPIO0 (EPWM1A)
GpioCtrlRegs.GPAMUX1.bit.GPIO0 = 1; // Configure GPIO0 as EPWM1A
GpioCtrlRegs.GPAPUD.bit.GPIO2 = 1; // Disable pull-up on GPIO2 (EPWM2A)
GpioCtrlRegs.GPAMUX1.bit.GPIO2 = 1; // Configure GPIO2 as EPWM2A
EDIS;
}
//
// End of file
//
