| /* |
| * ------------------------------------------- |
| * MSP432 DriverLib - v3_10_00_09 |
| * ------------------------------------------- |
| * |
| * --COPYRIGHT--,BSD,BSD |
| * Copyright (c) 2014, Texas Instruments Incorporated |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * |
| * * Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * |
| * * Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * |
| * * Neither the name of Texas Instruments Incorporated nor the names of |
| * its contributors may be used to endorse or promote products derived |
| * from this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
| * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, |
| * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR |
| * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
| * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
| * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; |
| * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, |
| * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR |
| * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, |
| * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| * --/COPYRIGHT--*/ |
| #include <fpu.h> |
| |
| void FPU_enableModule(void) |
| { |
| // |
| // Enable the coprocessors used by the floating-point unit. |
| // |
| SCB->CPACR = ((SCB->CPACR & ~(SCB_CPACR_CP11_MASK | SCB_CPACR_CP10_MASK)) |
| | SCB_CPACR_CP11_MASK | SCB_CPACR_CP10_MASK); |
| } |
| |
| void FPU_disableModule(void) |
| { |
| // |
| // Disable the coprocessors used by the floating-point unit. |
| // |
| SCB->CPACR = ((SCB->CPACR & ~(SCB_CPACR_CP10_MASK | SCB_CPACR_CP11_MASK))); |
| } |
| |
| void FPU_enableStacking(void) |
| { |
| // |
| // Enable automatic state preservation for the floating-point unit, and |
| // disable lazy state preservation (meaning that the floating-point state |
| // is always stacked when floating-point instructions are used). |
| // |
| FPU->FPCCR = (FPU->FPCCR & ~FPU_FPCCR_LSPEN_Msk) | FPU_FPCCR_ASPEN_Msk; |
| } |
| |
| void FPU_enableLazyStacking(void) |
| { |
| // |
| // Enable automatic and lazy state preservation for the floating-point |
| // unit. |
| // |
| FPU->FPCCR |= FPU_FPCCR_ASPEN_Msk | FPU_FPCCR_LSPEN_Msk; |
| } |
| |
| void FPU_disableStacking(void) |
| { |
| // |
| // Disable automatic and lazy state preservation for the floating-point |
| // unit. |
| // |
| FPU->FPCCR &= ~(FPU_FPCCR_ASPEN_Msk | FPU_FPCCR_LSPEN_Msk); |
| } |
| |
| void FPU_setHalfPrecisionMode(uint32_t mode) |
| { |
| // |
| // Set the half-precision floating-point format. |
| // |
| FPU->FPDSCR = (FPU->FPDSCR & ~(FPU_FPDSCR_AHP_Msk)) | mode; |
| } |
| |
| void FPU_setNaNMode(uint32_t mode) |
| { |
| // |
| // Set the NaN mode. |
| // |
| FPU->FPDSCR = (FPU->FPDSCR & ~(FPU_FPDSCR_DN_Msk)) | mode; |
| } |
| |
| void FPU_setFlushToZeroMode(uint32_t mode) |
| { |
| // |
| // Set the flush-to-zero mode. |
| // |
| FPU->FPDSCR = (FPU->FPDSCR & ~(FPU_FPDSCR_FZ_Msk)) | mode; |
| } |
| |
| void FPU_setRoundingMode(uint32_t mode) |
| { |
| // |
| // Set the rounding mode. |
| // |
| FPU->FPDSCR = (FPU->FPDSCR & ~(FPU_FPDSCR_RMode_Msk)) | mode; |
| } |
| |