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305 lines
9.8 KiB
C
305 lines
9.8 KiB
C
// TI File $Revision: /main/2 $
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// Checkin $Date: March 15, 2007 16:54:36 $
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//###########################################################################
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//
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// FILE: DSP2833x_ECap.c
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//
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// TITLE: DSP2833x eCAP Initialization & Support Functions.
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//
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//###########################################################################
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// $TI Release: 2833x/2823x Header Files V1.32 $
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// $Release Date: June 28, 2010 $
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// $Copyright:
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// Copyright (C) 2009-2024 Texas Instruments Incorporated - http://www.ti.com/
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions
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// are met:
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//
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// Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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//
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// Redistributions in binary form must reproduce the above copyright
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// notice, this list of conditions and the following disclaimer in the
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// documentation and/or other materials provided with the
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// distribution.
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//
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// Neither the name of Texas Instruments Incorporated nor the names of
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// its contributors may be used to endorse or promote products derived
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// from this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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// $
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//###########################################################################
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//
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// Included Files
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//
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#include "DSP2833x_Device.h" // DSP2833x Headerfile Include File
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#include "DSP2833x_Examples.h" // DSP2833x Examples Include File
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//
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// InitECap - This function initializes the eCAP(s) to a known state.
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//
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void
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InitECap(void)
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{
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//
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// Initialize eCAP1/2/3
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//
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}
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//
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// InitECapGpio - This function initializes GPIO pins to function as ECAP pins
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//
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// Each GPIO pin can be configured as a GPIO pin or up to 3 different
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// peripheral functional pins. By default all pins come up as GPIO
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// inputs after reset.
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//
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// Caution:
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// For each eCAP peripheral
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// Only one GPIO pin should be enabled for ECAP operation.
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// Comment out other unwanted lines.
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//
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void
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InitECapGpio()
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{
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InitECap1Gpio();
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#if (DSP28_ECAP2)
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InitECap2Gpio();
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#endif // endif DSP28_ECAP2
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#if (DSP28_ECAP3)
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InitECap3Gpio();
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#endif // endif DSP28_ECAP3
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#if (DSP28_ECAP4)
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InitECap4Gpio();
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#endif // endif DSP28_ECAP4
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#if (DSP28_ECAP5)
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InitECap5Gpio();
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#endif // endif DSP28_ECAP5
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#if (DSP28_ECAP6)
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InitECap6Gpio();
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#endif // endif DSP28_ECAP6
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}
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//
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// InitECap1Gpio -
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//
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void
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InitECap1Gpio(void)
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{
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EALLOW;
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//
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// Enable internal pull-up for the selected pins
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// Pull-ups can be enabled or disabled by the user.
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// This will enable the pullups for the specified pins.
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// Comment out other unwanted lines.
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//
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//GpioCtrlRegs.GPAPUD.bit.GPIO5 = 0; // Enable pull-up on GPIO5 (CAP1)
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GpioCtrlRegs.GPAPUD.bit.GPIO24 = 0; // Enable pull-up on GPIO24 (CAP1)
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//GpioCtrlRegs.GPBPUD.bit.GPIO34 = 0; // Enable pull-up on GPIO34 (CAP1)
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//
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// Inputs are synchronized to SYSCLKOUT by default.
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// Comment out other unwanted lines.
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//
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//GpioCtrlRegs.GPAQSEL1.bit.GPIO5 = 0; //Synch to SYSCLKOUT GPIO5 (CAP1)
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GpioCtrlRegs.GPAQSEL2.bit.GPIO24 = 0; //Synch to SYSCLKOUT GPIO24 (CAP1)
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//GpioCtrlRegs.GPBQSEL1.bit.GPIO34 = 0; //Synch to SYSCLKOUT GPIO34 (CAP1)
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//
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// Configure eCAP-1 pins using GPIO regs
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// This specifies which of the possible GPIO pins will be eCAP1 functional pins.
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// Comment out other unwanted lines.
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//
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//GpioCtrlRegs.GPAMUX1.bit.GPIO5 = 3; // Configure GPIO5 as CAP1
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GpioCtrlRegs.GPAMUX2.bit.GPIO24 = 1; // Configure GPIO24 as CAP1
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//GpioCtrlRegs.GPBMUX1.bit.GPIO34 = 1; // Configure GPIO24 as CAP1
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EDIS;
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}
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#if DSP28_ECAP2
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//
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// InitECap2Gpio -
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//
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void
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InitECap2Gpio(void)
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{
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EALLOW;
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//
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// Enable internal pull-up for the selected pins
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// Pull-ups can be enabled or disabled by the user.
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// This will enable the pullups for the specified pins.
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// Comment out other unwanted lines.
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//
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GpioCtrlRegs.GPAPUD.bit.GPIO7 = 0; // Enable pull-up on GPIO7 (CAP2)
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//GpioCtrlRegs.GPAPUD.bit.GPIO25 = 0; // Enable pull-up on GPIO25 (CAP2)
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//GpioCtrlRegs.GPBPUD.bit.GPIO37 = 0; // Enable pull-up on GPIO37 (CAP2)
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//
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// Inputs are synchronized to SYSCLKOUT by default.
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// Comment out other unwanted lines.
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//
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GpioCtrlRegs.GPAQSEL1.bit.GPIO7 = 0; //Synch to SYSCLKOUT GPIO7 (CAP2)
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//GpioCtrlRegs.GPAQSEL2.bit.GPIO25 = 0; //Synch to SYSCLKOUT GPIO25 (CAP2)
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//GpioCtrlRegs.GPBQSEL1.bit.GPIO37 = 0; //Synch to SYSCLKOUT GPIO37 (CAP2)
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//
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// Configure eCAP-2 pins using GPIO regs
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// This specifies which of the possible GPIO pins will be eCAP2 functional
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// pins. Comment out other unwanted lines.
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//
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GpioCtrlRegs.GPAMUX1.bit.GPIO7 = 3; // Configure GPIO7 as CAP2
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//GpioCtrlRegs.GPAMUX2.bit.GPIO25 = 1; // Configure GPIO25 as CAP2
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//GpioCtrlRegs.GPBMUX1.bit.GPIO37 = 3; // Configure GPIO37 as CAP2
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EDIS;
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}
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#endif // endif DSP28_ECAP2
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#if DSP28_ECAP3
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//
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// InitECap3Gpio -
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//
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void
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InitECap3Gpio(void)
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{
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EALLOW;
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/* Enable internal pull-up for the selected pins */
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// Pull-ups can be enabled or disabled by the user.
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// This will enable the pullups for the specified pins.
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// Comment out other unwanted lines.
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GpioCtrlRegs.GPAPUD.bit.GPIO9 = 0; // Enable pull-up on GPIO9 (CAP3)
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// GpioCtrlRegs.GPAPUD.bit.GPIO26 = 0; // Enable pull-up on GPIO26 (CAP3)
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// Inputs are synchronized to SYSCLKOUT by default.
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// Comment out other unwanted lines.
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GpioCtrlRegs.GPAQSEL1.bit.GPIO9 = 0; // Synch to SYSCLKOUT GPIO9 (CAP3)
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// GpioCtrlRegs.GPAQSEL2.bit.GPIO26 = 0; // Synch to SYSCLKOUT GPIO26 (CAP3)
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/* Configure eCAP-3 pins using GPIO regs*/
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// This specifies which of the possible GPIO pins will be eCAP3 functional pins.
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// Comment out other unwanted lines.
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GpioCtrlRegs.GPAMUX1.bit.GPIO9 = 3; // Configure GPIO9 as CAP3
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// GpioCtrlRegs.GPAMUX2.bit.GPIO26 = 1; // Configure GPIO26 as CAP3
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EDIS;
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}
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#endif // endif DSP28_ECAP3
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#if DSP28_ECAP4
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void InitECap4Gpio(void)
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{
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EALLOW;
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/* Enable internal pull-up for the selected pins */
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// Pull-ups can be enabled or disabled by the user.
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// This will enable the pullups for the specified pins.
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// Comment out other unwanted lines.
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GpioCtrlRegs.GPAPUD.bit.GPIO11 = 0; // Enable pull-up on GPIO11 (CAP4)
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// GpioCtrlRegs.GPAPUD.bit.GPIO27 = 0; // Enable pull-up on GPIO27 (CAP4)
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// Inputs are synchronized to SYSCLKOUT by default.
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// Comment out other unwanted lines.
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GpioCtrlRegs.GPAQSEL1.bit.GPIO11 = 0; // Synch to SYSCLKOUT GPIO11 (CAP4)
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// GpioCtrlRegs.GPAQSEL2.bit.GPIO27 = 0; // Synch to SYSCLKOUT GPIO27 (CAP4)
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/* Configure eCAP-4 pins using GPIO regs*/
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// This specifies which of the possible GPIO pins will be eCAP4 functional pins.
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// Comment out other unwanted lines.
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GpioCtrlRegs.GPAMUX1.bit.GPIO11 = 3; // Configure GPIO11 as CAP4
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// GpioCtrlRegs.GPAMUX2.bit.GPIO27 = 1; // Configure GPIO27 as CAP4
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EDIS;
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}
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#endif // endif DSP28_ECAP4
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#if DSP28_ECAP5
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void InitECap5Gpio(void)
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{
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EALLOW;
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/* Enable internal pull-up for the selected pins */
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// Pull-ups can be enabled or disabled by the user.
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// This will enable the pullups for the specified pins.
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// Comment out other unwanted lines.
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GpioCtrlRegs.GPAPUD.bit.GPIO3 = 0; // Enable pull-up on GPIO3 (CAP5)
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// GpioCtrlRegs.GPBPUD.bit.GPIO48 = 0; // Enable pull-up on GPIO48 (CAP5)
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// Inputs are synchronized to SYSCLKOUT by default.
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// Comment out other unwanted lines.
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GpioCtrlRegs.GPAQSEL1.bit.GPIO3 = 0; // Synch to SYSCLKOUT GPIO3 (CAP5)
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// GpioCtrlRegs.GPBQSEL2.bit.GPIO48 = 0; // Synch to SYSCLKOUT GPIO48 (CAP5)
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/* Configure eCAP-5 pins using GPIO regs*/
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// This specifies which of the possible GPIO pins will be eCAP5 functional pins.
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// Comment out other unwanted lines.
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GpioCtrlRegs.GPAMUX1.bit.GPIO3 = 2; // Configure GPIO3 as CAP5
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// GpioCtrlRegs.GPBMUX2.bit.GPIO48 = 1; // Configure GPIO48 as CAP5
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EDIS;
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}
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#endif // endif DSP28_ECAP5
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#if DSP28_ECAP6
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void InitECap6Gpio(void)
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{
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EALLOW;
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/* Enable internal pull-up for the selected pins */
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// Pull-ups can be enabled or disabled by the user.
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// This will enable the pullups for the specified pins.
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// Comment out other unwanted lines.
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GpioCtrlRegs.GPAPUD.bit.GPIO1 = 0; // Enable pull-up on GPIO1 (CAP6)
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// GpioCtrlRegs.GPBPUD.bit.GPIO49 = 0; // Enable pull-up on GPIO49 (CAP6)
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// Inputs are synchronized to SYSCLKOUT by default.
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// Comment out other unwanted lines.
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GpioCtrlRegs.GPAQSEL1.bit.GPIO1 = 0; // Synch to SYSCLKOUT GPIO1 (CAP6)
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// GpioCtrlRegs.GPBQSEL2.bit.GPIO49 = 0; // Synch to SYSCLKOUT GPIO49 (CAP6)
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/* Configure eCAP-5 pins using GPIO regs*/
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// This specifies which of the possible GPIO pins will be eCAP6 functional pins.
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// Comment out other unwanted lines.
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GpioCtrlRegs.GPAMUX1.bit.GPIO1 = 2; // Configure GPIO1 as CAP6
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// GpioCtrlRegs.GPBMUX2.bit.GPIO49 = 1; // Configure GPIO49 as CAP6
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EDIS;
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}
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#endif // endif DSP28_ECAP6
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//===========================================================================
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// End of file.
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//===========================================================================
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