200 lines
6.1 KiB
C
200 lines
6.1 KiB
C
/* --COPYRIGHT--,BSD
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* Copyright (c) 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
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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 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 "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
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* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
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* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
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* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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* --/COPYRIGHT--*/
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//*****************************************************************************
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//
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// sdhs.c - Driver for the SDHS Module.
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//
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//*****************************************************************************
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//*****************************************************************************
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//
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//! \addtogroup sdhs_api sdhs
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//! @{
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//
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//*****************************************************************************
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#include "inc/hw_memmap.h"
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#ifdef __MSP430_HAS_SDHS__
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#include "sdhs.h"
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#include <assert.h>
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void SDHS_init(uint16_t baseAddress, SDHS_initParam *param)
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{
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//Unlock Registers
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HWREG16(baseAddress + OFS_SDHSCTL3) &= ~TRIGEN;
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HWREG16(baseAddress + OFS_SDHSCTL5) &= ~SDHS_LOCK;
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//Set SDHS Control 0
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HWREG16(baseAddress + OFS_SDHSCTL0) =
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param->triggerSourceSelect
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| param->msbShift
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| param->outputBitResolution
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| param->dataFormat
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| param->dataAlignment
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| param->interruptDelayGeneration
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| param->autoSampleStart;
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//Set SDHS Control 1
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HWREG16(baseAddress + OFS_SDHSCTL1) = param->oversamplingRate;
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//Set SDHS Control 2
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HWREG16(baseAddress + OFS_SDHSCTL2) =
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param->dataTransferController
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| param->windowComparator
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| param->sampleSizeCounting;
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}
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void SDHS_setWindowComp(uint16_t baseAddress, uint16_t highThreshold,
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uint16_t lowThreshold)
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{
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uint16_t saveCTL3 = HWREG16(baseAddress + OFS_SDHSCTL3);
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uint16_t saveCTL5 = HWREG16(baseAddress + OFS_SDHSCTL5);
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//Unlock Registers
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HWREG16(baseAddress + OFS_SDHSCTL3) &= ~TRIGEN;
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HWREG16(baseAddress + OFS_SDHSCTL5) &= ~SDHS_LOCK;
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HWREG16(baseAddress + OFS_SDHSWINHITH) = highThreshold;
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HWREG16(baseAddress + OFS_SDHSWINLOTH) = lowThreshold;
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//Restore CTL3 and CTL5
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HWREG16(baseAddress + OFS_SDHSCTL3) = saveCTL3;
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HWREG16(baseAddress + OFS_SDHSCTL5) = saveCTL5;
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}
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void SDHS_setTotalSampleSize(uint16_t baseAddress, uint16_t sampleSize)
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{
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uint16_t saveCTL3 = HWREG16(baseAddress + OFS_SDHSCTL3);
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uint16_t saveCTL5 = HWREG16(baseAddress + OFS_SDHSCTL5);
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//Unlock Registers
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HWREG16(baseAddress + OFS_SDHSCTL3) &= ~TRIGEN;
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HWREG16(baseAddress + OFS_SDHSCTL5) &= ~SDHS_LOCK;
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HWREG16(baseAddress + OFS_SDHSCTL2) = sampleSize - 1;
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}
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void SDHS_enableTrigger(uint16_t baseAddress)
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{
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HWREG16(baseAddress + OFS_SDHSCTL3) |= TRIGEN;
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}
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void SDHS_disableTrigger(uint16_t baseAddress)
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{
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HWREG16(baseAddress + OFS_SDHSCTL3) &= ~TRIGEN;
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}
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void SDHS_enable(uint16_t baseAddress)
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{
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HWREG16(baseAddress + OFS_SDHSCTL4) |= SDHSON;
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}
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void SDHS_disable(uint16_t baseAddress)
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{
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HWREG16(baseAddress + OFS_SDHSCTL4) &= ~SDHSON;
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}
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uint16_t SDHS_getInterruptStatus(uint16_t baseAddress, uint16_t interruptMask)
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{
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return (HWREG16(baseAddress + OFS_SDHSRIS) & interruptMask);
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}
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uint16_t SDHS_getInterruptMaskStatus(uint16_t baseAddress, uint16_t interruptMask)
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{
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return (HWREG16(baseAddress + OFS_SDHSIMSC) & interruptMask);
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}
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void SDHS_enableInterrupt(uint16_t baseAddress, uint16_t interruptMask)
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{
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HWREG16(baseAddress + OFS_SDHSIMSC) |= interruptMask;
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}
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void SDHS_disableInterrupt(uint16_t baseAddress, uint16_t interruptMask)
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{
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HWREG16(baseAddress + OFS_SDHSIMSC) &= ~interruptMask;
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}
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void SDHS_clearInterrupt(uint16_t baseAddress, uint16_t interruptMask)
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{
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HWREG16(baseAddress + OFS_SDHSICR) |= interruptMask;
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}
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void SDHS_setInterrupt(uint16_t baseAddress, uint16_t interruptMask)
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{
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HWREG16(baseAddress + OFS_SDHSISR) |= interruptMask;
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}
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void SDHS_setPGAGain(uint16_t baseAddress, uint16_t gain)
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{
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assert (gain < 0x40);
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HWREG16(baseAddress + OFS_SDHSCTL6) = gain;
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}
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void SDHS_setModularOptimization(uint16_t baseAddress, uint16_t optimization)
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{
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assert (optimization < 0x20);
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HWREG16(baseAddress + OFS_SDHSCTL7) = optimization;
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}
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uint16_t SDHS_getRegisterLockStatus(uint16_t baseAddress)
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{
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return (HWREG16(baseAddress + OFS_SDHSCTL5) & SDHS_LOCK);
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}
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void SDHS_startConversion(uint16_t baseAddress)
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{
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HWREG16(baseAddress + OFS_SDHSCTL5) |= SSTART;
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}
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void SDHS_endConversion(uint16_t baseAddress)
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{
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HWREG16(baseAddress + OFS_SDHSCTL5) &= ~SSTART;
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}
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uint16_t SDHS_getResults(uint16_t baseAddress)
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{
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return (HWREG16(baseAddress + OFS_SDHSDT));
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}
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void SDHS_setDTCDestinationAddress(uint16_t baseAddress, uint16_t address)
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{
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HWREG16(baseAddress + OFS_SDHSDTCDA) = address;
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}
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#endif
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//*****************************************************************************
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//
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//! Close the doxygen group for sdhs_api
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//! @}
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//
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//*****************************************************************************
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