148 lines
4.2 KiB
C
148 lines
4.2 KiB
C
//###########################################################################
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//
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// FILE: F2837xD_ECap.c
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//
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// TITLE: F2837xD eCAP Initialization & Support Functions.
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//
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//###########################################################################
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// $TI Release: F2837xD Support Library v3.05.00.00 $
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// $Release Date: Tue Jun 26 03:15:23 CDT 2018 $
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// $Copyright:
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// Copyright (C) 2013-2018 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 "F2837xD_device.h"
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#include "F2837xD_Examples.h"
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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 InitECap(void)
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{
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// Initialize eCAP1/2/3/4/5/6
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//tbd...
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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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// Each GPIO pin can be configured as a GPIO pin or up to 3
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// different peripheral functional pins. By default all pins
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// come up as GPIO inputs after reset.
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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 InitECapGpio()
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{
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}
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//
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// InitECap1Gpio - Initialize ECAP1 GPIOs
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//
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void InitECap1Gpio(Uint16 pin)
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{
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EALLOW;
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InputXbarRegs.INPUT7SELECT = pin; // Set eCAP1 source to GPIO-pin
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EDIS;
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}
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//
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// InitECap2Gpio - Initialize ECAP2 GPIOs
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//
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void InitECap2Gpio(Uint16 pin)
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{
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EALLOW;
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InputXbarRegs.INPUT8SELECT = pin; // Set eCAP2 source to GPIO-pin
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EDIS;
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}
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//
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// InitECap3Gpio - Initialize ECAP3 GPIOs
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//
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void InitECap3Gpio(Uint16 pin)
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{
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EALLOW;
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InputXbarRegs.INPUT9SELECT = pin; // Set eCAP3 source to GPIO-pin
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EDIS;
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}
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//
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// InitECap4Gpio - Initialize ECAP4 GPIOs
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//
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void InitECap4Gpio(Uint16 pin)
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{
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EALLOW;
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InputXbarRegs.INPUT10SELECT = pin; // Set eCAP4 source to GPIO-pin
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EDIS;
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}
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//
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// InitECap5Gpio - Initialize ECAP5 GPIOs
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//
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void InitECap5Gpio(Uint16 pin)
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{
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EALLOW;
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InputXbarRegs.INPUT11SELECT = pin; // Set eCAP5 source to GPIO-pin
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EDIS;
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}
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//
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// InitECap6Gpio - Initialize ECAP6 GPIOs
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//
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void InitECap6Gpio(Uint16 pin)
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{
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EALLOW;
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InputXbarRegs.INPUT12SELECT = pin; // Set eCAP6 source to GPIO-pin
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EDIS;
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}
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//
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// InitAPwm1Gpio - Initialize EPWM1 GPIOs
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//
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void InitAPwm1Gpio()
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{
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EALLOW;
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OutputXbarRegs.OUTPUT3MUX0TO15CFG.bit.MUX0 = 3; // Select ECAP1.OUT on Mux0
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OutputXbarRegs.OUTPUT3MUXENABLE.bit.MUX0 = 1; // Enable MUX0 for ECAP1.OUT
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GpioCtrlRegs.GPAMUX1.bit.GPIO5 = 3; // Select OUTPUTXBAR3 on GPIO5
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EDIS;
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}
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//
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// End of file
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//
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