116 lines
3.6 KiB
C
116 lines
3.6 KiB
C
/*
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* -------------------------------------------
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* MSP432 DriverLib - v3_40_00_10
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* -------------------------------------------
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*
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* --COPYRIGHT--,BSD,BSD
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* Copyright (c) 2016, 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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#include <fpu.h>
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void FPU_enableModule(void)
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{
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//
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// Enable the coprocessors used by the floating-point unit.
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//
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SCB->CPACR = ((SCB->CPACR & ~(SCB_CPACR_CP11_MASK | SCB_CPACR_CP10_MASK))
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| SCB_CPACR_CP11_MASK | SCB_CPACR_CP10_MASK);
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}
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void FPU_disableModule(void)
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{
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//
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// Disable the coprocessors used by the floating-point unit.
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//
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SCB->CPACR = ((SCB->CPACR & ~(SCB_CPACR_CP10_MASK | SCB_CPACR_CP11_MASK)));
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}
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void FPU_enableStacking(void)
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{
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//
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// Enable automatic state preservation for the floating-point unit, and
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// disable lazy state preservation (meaning that the floating-point state
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// is always stacked when floating-point instructions are used).
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//
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FPU->FPCCR = (FPU->FPCCR & ~FPU_FPCCR_LSPEN_Msk) | FPU_FPCCR_ASPEN_Msk;
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}
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void FPU_enableLazyStacking(void)
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{
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//
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// Enable automatic and lazy state preservation for the floating-point
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// unit.
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//
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FPU->FPCCR |= FPU_FPCCR_ASPEN_Msk | FPU_FPCCR_LSPEN_Msk;
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}
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void FPU_disableStacking(void)
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{
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//
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// Disable automatic and lazy state preservation for the floating-point
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// unit.
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//
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FPU->FPCCR &= ~(FPU_FPCCR_ASPEN_Msk | FPU_FPCCR_LSPEN_Msk);
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}
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void FPU_setHalfPrecisionMode(uint32_t mode)
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{
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//
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// Set the half-precision floating-point format.
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//
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FPU->FPDSCR = (FPU->FPDSCR & ~(FPU_FPDSCR_AHP_Msk)) | mode;
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}
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void FPU_setNaNMode(uint32_t mode)
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{
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//
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// Set the NaN mode.
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//
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FPU->FPDSCR = (FPU->FPDSCR & ~(FPU_FPDSCR_DN_Msk)) | mode;
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}
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void FPU_setFlushToZeroMode(uint32_t mode)
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{
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//
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// Set the flush-to-zero mode.
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//
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FPU->FPDSCR = (FPU->FPDSCR & ~(FPU_FPDSCR_FZ_Msk)) | mode;
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}
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void FPU_setRoundingMode(uint32_t mode)
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{
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//
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// Set the rounding mode.
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//
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FPU->FPDSCR = (FPU->FPDSCR & ~(FPU_FPDSCR_RMode_Msk)) | mode;
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}
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