// TI File $Revision: /main/3 $
// Checkin $Date: September 23, 2009   15:34:12 $
//###########################################################################
//
// FILE:   DSP2802x_EPwm.c
//
// TITLE:  DSP2802x EPwm Initialization & Support Functions.
//
//###########################################################################
// $TI Release: 2802x C/C++ Header Files and Peripheral Examples V1.29 $
// $Release Date: January 11, 2011 $
//###########################################################################

#include "DSP2802x_Device.h"     // DSP2802x Headerfile Include File
#include "DSP2802x_Examples.h"   // DSP2802x Examples Include File

//---------------------------------------------------------------------------
// InitEPwm:
//---------------------------------------------------------------------------
// This function initializes the EPwm(s) to a known state.
//
void InitEPwm(void)
{
   // Initialize EPwm1/2/3/4

   //tbd...

}

//---------------------------------------------------------------------------
// Example: InitEPwmGpio:
//---------------------------------------------------------------------------
// This function initializes GPIO pins to function as EPwm pins
//
// Each GPIO pin can be configured as a GPIO pin or up to 3 different
// peripheral functional pins. By default all pins come up as GPIO
// inputs after reset.
//

void InitEPwmGpio(void)
{
   InitEPwm1Gpio();
   InitEPwm2Gpio();
   InitEPwm3Gpio();
#if DSP28_EPWM4
   InitEPwm4Gpio();
#endif // endif DSP28_EPWM4
}

void InitEPwm1Gpio(void)
{
   EALLOW;

/* Disable internal pull-up for the selected output pins
   for reduced power consumption */
// Pull-ups can be enabled or disabled by the user.
// Comment out other unwanted lines.

    GpioCtrlRegs.GPAPUD.bit.GPIO0 = 1;    // Disable pull-up on GPIO0 (EPWM1A)
    GpioCtrlRegs.GPAPUD.bit.GPIO1 = 1;    // Disable pull-up on GPIO1 (EPWM1B)

/* Configure EPwm-1 pins using GPIO regs*/
// This specifies which of the possible GPIO pins will be EPWM1 functional pins.
// Comment out other unwanted lines.

    GpioCtrlRegs.GPAMUX1.bit.GPIO0 = 1;   // Configure GPIO0 as EPWM1A
    GpioCtrlRegs.GPAMUX1.bit.GPIO1 = 1;   // Configure GPIO1 as EPWM1B

    EDIS;
}

void InitEPwm2Gpio(void)
{
   EALLOW;

/* Disable internal pull-up for the selected output pins
   for reduced power consumption */
// Pull-ups can be enabled or disabled by the user.
// This will enable the pullups for the specified pins.
// Comment out other unwanted lines.

    GpioCtrlRegs.GPAPUD.bit.GPIO2 = 1;    // Disable pull-up on GPIO2 (EPWM2A)
    GpioCtrlRegs.GPAPUD.bit.GPIO3 = 1;    // Disable pull-up on GPIO3 (EPWM2B)

/* Configure EPwm-2 pins using GPIO regs*/
// This specifies which of the possible GPIO pins will be EPWM2 functional pins.
// Comment out other unwanted lines.

    GpioCtrlRegs.GPAMUX1.bit.GPIO2 = 1;   // Configure GPIO2 as EPWM2A
    GpioCtrlRegs.GPAMUX1.bit.GPIO3 = 1;   // Configure GPIO3 as EPWM2B

    EDIS;
}

void InitEPwm3Gpio(void)
{
   EALLOW;

/* Disable internal pull-up for the selected output pins
   for reduced power consumption */
// Pull-ups can be enabled or disabled by the user.
// This will enable the pullups for the specified pins.
// Comment out other unwanted lines.

    GpioCtrlRegs.GPAPUD.bit.GPIO4 = 1;    // Disable pull-up on GPIO4 (EPWM3A)
    GpioCtrlRegs.GPAPUD.bit.GPIO5 = 1;    // Disable pull-up on GPIO5 (EPWM3B)

/* Configure EPwm-3 pins using GPIO regs*/
// This specifies which of the possible GPIO pins will be EPWM3 functional pins.
// Comment out other unwanted lines.

    GpioCtrlRegs.GPAMUX1.bit.GPIO4 = 1;   // Configure GPIO4 as EPWM3A
    GpioCtrlRegs.GPAMUX1.bit.GPIO5 = 1;   // Configure GPIO5 as EPWM3B

    EDIS;
}

#if DSP28_EPWM4
void InitEPwm4Gpio(void)
{
   EALLOW;
/* Disable internal pull-up for the selected output pins
   for reduced power consumption */
// Pull-ups can be enabled or disabled by the user.
// This will enable the pullups for the specified pins.
// Comment out other unwanted lines.

    GpioCtrlRegs.GPAPUD.bit.GPIO6 = 1;    // Disable pull-up on GPIO6 (EPWM4A)
    GpioCtrlRegs.GPAPUD.bit.GPIO7 = 1;    // Disable pull-up on GPIO7 (EPWM4B)

/* Configure EPWM-4 pins using GPIO regs*/
// This specifies which of the possible GPIO pins will be EPWM4 functional pins.
// Comment out other unwanted lines.

    GpioCtrlRegs.GPAMUX1.bit.GPIO6 = 1;   // Configure GPIO6 as EPWM4A
    GpioCtrlRegs.GPAMUX1.bit.GPIO7 = 1;   // Configure GPIO7 as EPWM4B

    EDIS;
}
#endif // endif DSP28_EPWM4

//---------------------------------------------------------------------------
// Example: InitEPwmSyncGpio:
//---------------------------------------------------------------------------
// This function initializes GPIO pins to function as EPwm Synch pins
//

void InitEPwmSyncGpio(void)
{

//   EALLOW;

/* Configure EPWMSYNCI  */

/* Enable internal pull-up for the selected pins */
// Pull-ups can be enabled or disabled by the user.
// This will enable the pullups for the specified pins.
// Comment out other unwanted lines.

   GpioCtrlRegs.GPAPUD.bit.GPIO6 = 0;    // Enable pull-up on GPIO6 (EPWMSYNCI)
// GpioCtrlRegs.GPBPUD.bit.GPIO32 = 0;// Enable pull-up on GPIO32 (EPWMSYNCI)

/* Set qualification for selected pins to asynch only */
// This will select synch to SYSCLKOUT for the selected pins.
// Comment out other unwanted lines.

   GpioCtrlRegs.GPAQSEL1.bit.GPIO6 = 0;   // Synch to SYSCLKOUT GPIO6 (EPWMSYNCI)
// GpioCtrlRegs.GPBQSEL1.bit.GPIO32 = 0;  // Synch to SYSCLKOUT GPIO32 (EPWMSYNCI)

/* Configure EPwmSync pins using GPIO regs*/
// This specifies which of the possible GPIO pins will be EPwmSync functional pins.
// Comment out other unwanted lines.

   GpioCtrlRegs.GPAMUX1.bit.GPIO6 = 2;    // Configures GPIO6 for EPWMSYNCI operation
// GpioCtrlRegs.GPBMUX1.bit.GPIO32 = 2;   // Configures GPIO32 for EPWMSYNCI operation.

/* Configure EPWMSYNC0  */

/* Disable internal pull-up for the selected output pins
   for reduced power consumption */
// Pull-ups can be enabled or disabled by the user.
// Comment out other unwanted lines.

   GpioCtrlRegs.GPAPUD.bit.GPIO6 = 1;    // Disable pull-up on GPIO6 (EPWMSYNCO)
// GpioCtrlRegs.GPBPUD.bit.GPIO33 = 1;    // Disable pull-up on GPIO33 (EPWMSYNCO)

   GpioCtrlRegs.GPAMUX1.bit.GPIO6 = 3;    // Configures GPIO6 for EPWMSYNCO
// GpioCtrlRegs.GPBMUX1.bit.GPIO33 = 2;   // Configures GPIO33 for EPWMSYNCO

}

//---------------------------------------------------------------------------
// Example: InitTzGpio:
//---------------------------------------------------------------------------
// This function initializes GPIO pins to function as Trip Zone (TZ) pins
//
// Each GPIO pin can be configured as a GPIO pin or up to 3 different
// peripheral functional pins. By default all pins come up as GPIO
// inputs after reset.
//

void InitTzGpio(void)
{
   EALLOW;

/* Enable internal pull-up for the selected pins */
// Pull-ups can be enabled or disabled by the user.
// This will enable the pullups for the specified pins.
// Comment out other unwanted lines.
   GpioCtrlRegs.GPAPUD.bit.GPIO12 = 0;    // Enable pull-up on GPIO12 (TZ1)
   GpioCtrlRegs.GPAPUD.bit.GPIO16 = 0;    // Enable pull-up on GPIO16 (TZ2)
// GpioCtrlRegs.GPAPUD.bit.GPIO28 = 0;    // Enable pull-up on GPIO28 (TZ2)
   GpioCtrlRegs.GPAPUD.bit.GPIO17 = 0;    // Enable pull-up on GPIO17 (TZ3)
// GpioCtrlRegs.GPAPUD.bit.GPIO29 = 0;    // Enable pull-up on GPIO29 (TZ3)

/* Set qualification for selected pins to asynch only */
// Inputs are synchronized to SYSCLKOUT by default.
// This will select asynch (no qualification) for the selected pins.
// Comment out other unwanted lines.

   GpioCtrlRegs.GPAQSEL1.bit.GPIO12 = 3;  // Asynch input GPIO12 (TZ1)
   GpioCtrlRegs.GPAQSEL2.bit.GPIO16 = 3;  // Asynch input GPIO16 (TZ2)
// GpioCtrlRegs.GPAQSEL2.bit.GPIO28 = 3;  // Asynch input GPIO28 (TZ2)
   GpioCtrlRegs.GPAQSEL2.bit.GPIO17 = 3;  // Asynch input GPIO17 (TZ3)
// GpioCtrlRegs.GPAQSEL2.bit.GPIO29 = 3;  // Asynch input GPIO29 (TZ3)


/* Configure TZ pins using GPIO regs*/
// This specifies which of the possible GPIO pins will be TZ functional pins.
// Comment out other unwanted lines.
   GpioCtrlRegs.GPAMUX1.bit.GPIO12 = 1;  // Configure GPIO12 as TZ1
   GpioCtrlRegs.GPAMUX2.bit.GPIO16 = 3;  // Configure GPIO16 as TZ2
// GpioCtrlRegs.GPAMUX2.bit.GPIO28 = 3;  // Configure GPIO28 as TZ2
   GpioCtrlRegs.GPAMUX2.bit.GPIO17 = 3;  // Configure GPIO17 as TZ3
// GpioCtrlRegs.GPAMUX2.bit.GPIO29 = 3;  // Configure GPIO29 as TZ3

   EDIS;

}

//===========================================================================
// End of file.
//===========================================================================