97 lines
3.9 KiB
C
97 lines
3.9 KiB
C
/******************************************************************************
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* Filename: aux_sysif.c
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* Revised: 2020-02-14 11:30:20 +0100 (Fri, 14 Feb 2020)
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* Revision: 56760
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*
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* Description: Driver for the AUX System Interface
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*
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* Copyright (c) 2015 - 2017, Texas Instruments Incorporated
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* All rights reserved.
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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 are met:
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*
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* 1) Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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*
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* 2) Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* 3) Neither the name of the ORGANIZATION nor the names of its contributors may
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* be used to endorse or promote products derived from this software without
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* specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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******************************************************************************/
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#include "aux_sysif.h"
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//*****************************************************************************
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//
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// Handle support for DriverLib in ROM:
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// This section will undo prototype renaming made in the header file
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//
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//*****************************************************************************
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#if !defined(DOXYGEN)
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#undef AUXSYSIFOpModeChange
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#define AUXSYSIFOpModeChange NOROM_AUXSYSIFOpModeChange
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#endif
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//*****************************************************************************
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//
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// Used in AUXSYSIFOpModeChange() to control the change of the operational mode.
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//
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//*****************************************************************************
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static const uint8_t g_OpMode_to_order[4] = {1,2,0,3};
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static const uint8_t g_Order_to_OpMode[4] = {2,0,1,3};
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//*****************************************************************************
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//
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// Controls AUX operational mode change
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//
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//*****************************************************************************
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void
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AUXSYSIFOpModeChange(uint32_t targetOpMode)
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{
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uint32_t currentOpMode;
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uint32_t currentOrder;
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uint32_t nextMode;
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// Check the argument
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ASSERT((targetOpMode == AUX_SYSIF_OPMODEREQ_REQ_PDLP)||
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(targetOpMode == AUX_SYSIF_OPMODEREQ_REQ_PDA) ||
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(targetOpMode == AUX_SYSIF_OPMODEREQ_REQ_LP) ||
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(targetOpMode == AUX_SYSIF_OPMODEREQ_REQ_A));
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do {
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currentOpMode = HWREG(AUX_SYSIF_BASE + AUX_SYSIF_O_OPMODEREQ);
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while ( currentOpMode != HWREG(AUX_SYSIF_BASE + AUX_SYSIF_O_OPMODEACK));
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if (currentOpMode != targetOpMode)
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{
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currentOrder = g_OpMode_to_order[currentOpMode];
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if ( currentOrder < g_OpMode_to_order[targetOpMode])
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{
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nextMode = g_Order_to_OpMode[currentOrder + 1];
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}
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else
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{
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nextMode = g_Order_to_OpMode[currentOrder - 1];
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}
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HWREG(AUX_SYSIF_BASE + AUX_SYSIF_O_OPMODEREQ) = nextMode;
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}
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} while ( currentOpMode != targetOpMode );
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}
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