88 lines
3.0 KiB
C
88 lines
3.0 KiB
C
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//###########################################################################
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//
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// FILE: cla.c
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//
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// TITLE: CLA Driver Implementation File
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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 "cla.h"
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//*****************************************************************************
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//
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// CLA_setTriggerSource()
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//
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//*****************************************************************************
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void
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CLA_setTriggerSource(CLA_TaskNumber taskNumber, CLA_Trigger trigger)
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{
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uint32_t srcSelReg;
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uint32_t shiftVal;
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//
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// Calculate the shift value for the specified task.
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//
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shiftVal = ((uint32_t)taskNumber * SYSCTL_CLA1TASKSRCSEL1_TASK2_S) % 32U;
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//
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// Calculate the register address for the specified task.
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//
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if(taskNumber <= CLA_TASK_4)
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{
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//
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// Tasks 1-4
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//
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srcSelReg = (uint32_t)DMACLASRCSEL_BASE + SYSCTL_O_CLA1TASKSRCSEL1;
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}
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else
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{
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//
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// Tasks 5-8
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//
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srcSelReg = (uint32_t)DMACLASRCSEL_BASE + SYSCTL_O_CLA1TASKSRCSEL2;
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}
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EALLOW;
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//
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// Write trigger selection to the appropriate register.
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//
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HWREG(srcSelReg) &= ~((uint32_t)SYSCTL_CLA1TASKSRCSEL1_TASK1_M
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<< shiftVal);
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HWREG(srcSelReg) = HWREG(srcSelReg) | ((uint32_t)trigger << shiftVal);
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EDIS;
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}
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