254 lines
6.9 KiB
C
254 lines
6.9 KiB
C
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//###########################################################################
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//
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// FILE: xbar.c
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//
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// TITLE: C28x X-BAR driver.
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//
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//###########################################################################
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// $Copyright:
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// Copyright (C) 2022 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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#include "xbar.h"
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//*****************************************************************************
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//
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// XBAR_setOutputMuxConfig
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//
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//*****************************************************************************
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void
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XBAR_setOutputMuxConfig(XBAR_OutputNum output, XBAR_OutputMuxConfig muxConfig)
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{
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uint32_t shift;
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uint16_t offset;
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//
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// If the configuration is for MUX16-31, we'll need an odd value to index
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// into the config registers.
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//
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if(((uint32_t)muxConfig & 0x2000U) != 0U)
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{
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offset = ((uint16_t)output << 1U) + 2U;
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}
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else
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{
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offset = (uint16_t)output << 1U;
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}
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//
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// Extract the shift from the input value.
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//
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shift = ((uint32_t)muxConfig >> 8U) & 0x1FU;
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//
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// Write the requested muxing value for this XBAR output.
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//
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EALLOW;
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HWREG(XBAR_OUTPUT_CFG_REG_BASE + offset) =
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(HWREG(XBAR_OUTPUT_CFG_REG_BASE + offset) &
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~((uint32_t)0x3U << shift)) |
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(((uint32_t)muxConfig & 0x3U) << shift);
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EDIS;
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}
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//*****************************************************************************
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//
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// XBAR_setEPWMMuxConfig
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//
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//*****************************************************************************
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void
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XBAR_setEPWMMuxConfig(XBAR_TripNum trip, XBAR_EPWMMuxConfig muxConfig)
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{
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uint32_t shift;
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uint16_t offset;
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//
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// If the configuration is for MUX16-31, we'll need an odd value to index
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// into the config registers.
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//
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if(((uint32_t)muxConfig & 0x2000U) != 0U)
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{
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offset = ((uint16_t)trip << 1U) + 2U;
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}
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else
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{
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offset = (uint16_t)trip << 1U;
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}
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//
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// Extract the shift from the input value.
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//
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shift = ((uint32_t)muxConfig >> 8U) & 0x1FU;
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//
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// Write the requested muxing value for this XBAR trip.
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//
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EALLOW;
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HWREG(XBAR_EPWM_CFG_REG_BASE + (uint32_t)offset) =
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(HWREG(XBAR_EPWM_CFG_REG_BASE + (uint32_t)offset) & ~(0x3UL << shift)) |
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(((uint32_t)muxConfig & 0x3UL) << shift);
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EDIS;
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}
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//*****************************************************************************
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//
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// XBAR_setCLBMuxConfig
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//
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//*****************************************************************************
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void
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XBAR_setCLBMuxConfig(XBAR_AuxSigNum auxSignal, XBAR_CLBMuxConfig muxConfig)
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{
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uint32_t shift;
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uint16_t offset;
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//
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// If the configuration is for MUX16-31, we'll need an odd value to index
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// into the config registers.
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//
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if(((uint32_t)muxConfig & 0x2000U) != 0U)
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{
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offset = ((uint16_t)auxSignal << 1U) + 2U;
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}
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else
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{
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offset = (uint16_t)auxSignal << 1U;
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}
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//
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// Extract the shift from the input value.
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//
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shift = ((uint32_t)muxConfig >> 8U) & 0x1FU;
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//
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// Write the requested muxing value for this XBAR auxSignal.
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//
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EALLOW;
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HWREG(XBAR_CLB_CFG_REG_BASE + (uint32_t)offset) =
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(HWREG(XBAR_CLB_CFG_REG_BASE + (uint32_t)offset) & ~(0x3UL << shift)) |
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(((uint32_t)muxConfig & 0x3UL) << shift);
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EDIS;
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}
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//*****************************************************************************
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//
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// XBAR_getInputFlagStatus
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//
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//*****************************************************************************
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bool
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XBAR_getInputFlagStatus(XBAR_InputFlag inputFlag)
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{
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uint32_t offset;
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uint32_t inputMask;
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//
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// Determine flag register offset.
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//
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switch((uint16_t)inputFlag & XBAR_INPUT_FLG_REG_M)
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{
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case XBAR_INPUT_FLG_REG_1:
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offset = XBAR_O_FLG1;
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break;
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case XBAR_INPUT_FLG_REG_2:
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offset = XBAR_O_FLG2;
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break;
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case XBAR_INPUT_FLG_REG_3:
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offset = XBAR_O_FLG3;
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break;
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default:
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//
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// This should never happen if a valid inputFlag value is used.
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//
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offset = 0U;
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break;
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}
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//
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// Get the status of the X-BAR input latch.
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//
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inputMask = (uint32_t)1U << ((uint32_t)inputFlag & XBAR_INPUT_FLG_INPUT_M);
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return((HWREG(XBAR_BASE + offset) & inputMask) != 0U);
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}
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//*****************************************************************************
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//
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// XBAR_clearInputFlag
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//
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//*****************************************************************************
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void
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XBAR_clearInputFlag(XBAR_InputFlag inputFlag)
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{
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uint32_t offset;
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uint32_t inputMask;
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//
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// Determine flag clear register offset.
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//
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switch((uint16_t)inputFlag & XBAR_INPUT_FLG_REG_M)
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{
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case XBAR_INPUT_FLG_REG_1:
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offset = XBAR_O_CLR1;
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break;
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case XBAR_INPUT_FLG_REG_2:
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offset = XBAR_O_CLR2;
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break;
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case XBAR_INPUT_FLG_REG_3:
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offset = XBAR_O_CLR3;
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break;
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default:
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//
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// This should never happen if a valid inputFlag value is used.
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//
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offset = 0U;
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break;
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}
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//
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// Set the bit that clears the X-BAR input latch.
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//
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inputMask = 1UL << ((uint32_t)inputFlag & XBAR_INPUT_FLG_INPUT_M);
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HWREG(XBAR_BASE + offset) = inputMask;
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}
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