| /* |
| * ------------------------------------------- |
| * MSP432 DriverLib - v01_04_00_18 |
| * ------------------------------------------- |
| * |
| * --COPYRIGHT--,BSD,BSD |
| * Copyright (c) 2015, 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 <comp_e.h> |
| #include <interrupt.h> |
| #include <debug.h> |
| |
| static uint16_t __getRegisterSettingForInput(uint32_t input) |
| { |
| switch (input) |
| { |
| case COMP_E_INPUT0: |
| return CEIPSEL_0; |
| case COMP_E_INPUT1: |
| return CEIPSEL_1; |
| case COMP_E_INPUT2: |
| return CEIPSEL_2; |
| case COMP_E_INPUT3: |
| return CEIPSEL_3; |
| case COMP_E_INPUT4: |
| return CEIPSEL_4; |
| case COMP_E_INPUT5: |
| return CEIPSEL_5; |
| case COMP_E_INPUT6: |
| return CEIPSEL_6; |
| case COMP_E_INPUT7: |
| return CEIPSEL_7; |
| case COMP_E_INPUT8: |
| return CEIPSEL_8; |
| case COMP_E_INPUT9: |
| return CEIPSEL_9; |
| case COMP_E_INPUT10: |
| return CEIPSEL_10; |
| case COMP_E_INPUT11: |
| return CEIPSEL_11; |
| case COMP_E_INPUT12: |
| return CEIPSEL_12; |
| case COMP_E_INPUT13: |
| return CEIPSEL_13; |
| case COMP_E_INPUT14: |
| return CEIPSEL_14; |
| case COMP_E_INPUT15: |
| return CEIPSEL_15; |
| case COMP_E_VREF: |
| return COMP_E_VREF; |
| default: |
| ASSERT(false); |
| return 0x11; |
| } |
| |
| } |
| |
| bool COMP_E_initModule(uint32_t comparator, const COMP_E_Config *config) |
| { |
| uint_fast8_t positiveTerminalInput = __getRegisterSettingForInput( |
| config->positiveTerminalInput); |
| uint_fast8_t negativeTerminalInput = __getRegisterSettingForInput( |
| config->negativeTerminalInput); |
| bool retVal = true; |
| |
| ASSERT(positiveTerminalInput < 0x10); ASSERT(negativeTerminalInput < 0x10); |
| ASSERT(positiveTerminalInput != negativeTerminalInput); |
| ASSERT( |
| config->outputFilterEnableAndDelayLevel |
| <= COMP_E_FILTEROUTPUT_DLYLVL4); |
| |
| /* Reset COMPE Control 1 & Interrupt Registers for initialization */ |
| COMP_E_CMSIS(comparator)->rCTL0.r = 0; |
| COMP_E_CMSIS(comparator)->rINT.r = 0; |
| |
| // Set the Positive Terminal |
| if (COMP_E_VREF != positiveTerminalInput) |
| { |
| // Enable Positive Terminal Input Mux and Set to the appropriate input |
| COMP_E_CMSIS(comparator)->rCTL0.r |= CEIPEN + positiveTerminalInput; |
| |
| // Disable the input buffer |
| COMP_E_CMSIS(comparator)->rCTL3.r |= (1 << positiveTerminalInput); |
| } else |
| { |
| // Reset and Set COMPE Control 2 Register |
| BITBAND_PERI(COMP_E_CMSIS(comparator)->rCTL2.r,CERSEL_OFS) = 0; |
| } |
| |
| // Set the Negative Terminal |
| if (COMP_E_VREF != negativeTerminalInput) |
| { |
| // Enable Negative Terminal Input Mux and Set to the appropriate input |
| COMP_E_CMSIS(comparator)->rCTL0.r |= CEIMEN |
| + (negativeTerminalInput << 8); |
| |
| // Disable the input buffer |
| COMP_E_CMSIS(comparator)->rCTL3.r |= (1 << negativeTerminalInput); |
| } else |
| { |
| // Reset and Set COMPE Control 2 Register |
| BITBAND_PERI(COMP_E_CMSIS(comparator)->rCTL2.r, CERSEL_OFS) = 1; |
| } |
| |
| // Reset and Set COMPE Control 1 Register |
| COMP_E_CMSIS(comparator)->rCTL1.r = config->powerMode |
| + config->outputFilterEnableAndDelayLevel |
| + config->invertedOutputPolarity; |
| |
| return retVal; |
| } |
| |
| void COMP_E_setReferenceVoltage(uint32_t comparator, |
| uint_fast16_t supplyVoltageReferenceBase, |
| uint_fast16_t lowerLimitSupplyVoltageFractionOf32, |
| uint_fast16_t upperLimitSupplyVoltageFractionOf32) |
| { |
| ASSERT(supplyVoltageReferenceBase <= COMP_E_VREFBASE2_5V); |
| ASSERT(upperLimitSupplyVoltageFractionOf32 <= 32); |
| ASSERT(lowerLimitSupplyVoltageFractionOf32 <= 32); ASSERT( |
| upperLimitSupplyVoltageFractionOf32 |
| >= lowerLimitSupplyVoltageFractionOf32); |
| |
| BITBAND_PERI(COMP_E_CMSIS(comparator)->rCTL1.r, CEMRVS_OFS) = 0; |
| COMP_E_CMSIS(comparator)->rCTL2.r &= CERSEL; |
| |
| // Set Voltage Source(Vcc | Vref, resistor ladder or not) |
| if (COMP_E_REFERENCE_AMPLIFIER_DISABLED == supplyVoltageReferenceBase) |
| { |
| COMP_E_CMSIS(comparator)->rCTL2.r |= CERS_1; |
| } else if (lowerLimitSupplyVoltageFractionOf32 == 32) |
| { |
| COMP_E_CMSIS(comparator)->rCTL2.r |= CERS_3; |
| } else |
| { |
| COMP_E_CMSIS(comparator)->rCTL2.r |= CERS_2; |
| } |
| |
| // Set COMPE Control 2 Register |
| COMP_E_CMSIS(comparator)->rCTL2.r |= supplyVoltageReferenceBase |
| + ((upperLimitSupplyVoltageFractionOf32 - 1) << 8) |
| + (lowerLimitSupplyVoltageFractionOf32 - 1); |
| } |
| |
| void COMP_E_setReferenceAccuracy(uint32_t comparator, |
| uint_fast16_t referenceAccuracy) |
| { |
| ASSERT( |
| (referenceAccuracy == COMP_E_ACCURACY_STATIC) |
| || (referenceAccuracy == COMP_E_ACCURACY_CLOCKED)); |
| |
| if (referenceAccuracy) |
| BITBAND_PERI(COMP_E_CMSIS(comparator)->rCTL2.r, CEREFACC_OFS) = 1; |
| else |
| BITBAND_PERI(COMP_E_CMSIS(comparator)->rCTL2.r, CEREFACC_OFS) = 0; |
| |
| } |
| |
| void COMP_E_setPowerMode(uint32_t comparator, uint_fast16_t powerMode) |
| { |
| COMP_E_CMSIS(comparator)->rCTL1.r = (COMP_E_CMSIS(comparator)->rCTL1.r |
| & ~(CEPWRMD_M)) | powerMode; |
| } |
| |
| void COMP_E_enableModule(uint32_t comparator) |
| { |
| BITBAND_PERI(COMP_E_CMSIS(comparator)->rCTL1.r, CEON_OFS) = 1; |
| } |
| |
| void COMP_E_disableModule(uint32_t comparator) |
| { |
| BITBAND_PERI(COMP_E_CMSIS(comparator)->rCTL1.r, CEON_OFS) = 0; |
| } |
| |
| void COMP_E_shortInputs(uint32_t comparator) |
| { |
| BITBAND_PERI(COMP_E_CMSIS(comparator)->rCTL1.r, CESHORT_OFS) = 1; |
| } |
| |
| void COMP_E_unshortInputs(uint32_t comparator) |
| { |
| BITBAND_PERI(COMP_E_CMSIS(comparator)->rCTL1.r, CESHORT_OFS) = 0; |
| } |
| |
| void COMP_E_disableInputBuffer(uint32_t comparator, uint_fast16_t inputPort) |
| { |
| ASSERT(inputPort <= COMP_E_INPUT15); |
| |
| COMP_E_CMSIS(comparator)->rCTL3.r |= (inputPort); |
| } |
| |
| void COMP_E_enableInputBuffer(uint32_t comparator, uint_fast16_t inputPort) |
| { |
| ASSERT(inputPort <= COMP_E_INPUT15); |
| |
| COMP_E_CMSIS(comparator)->rCTL3.r &= ~(inputPort); |
| } |
| |
| void COMP_E_swapIO(uint32_t comparator) |
| { |
| COMP_E_CMSIS(comparator)->rCTL1.r ^= CEEX; // Toggle CEEX bit |
| } |
| |
| uint8_t COMP_E_outputValue(uint32_t comparator) |
| { |
| return COMP_E_CMSIS(comparator)->rCTL1.r & CEOUT; |
| } |
| |
| void COMP_E_enableInterrupt(uint32_t comparator, uint_fast16_t mask) |
| { |
| // Set the Interrupt enable bit |
| COMP_E_CMSIS(comparator)->rINT.r |= mask; |
| } |
| |
| uint_fast16_t COMP_E_getEnabledInterruptStatus(uint32_t comparator) |
| { |
| return COMP_E_getInterruptStatus(comparator) & |
| COMP_E_CMSIS(comparator)->rINT.r; |
| } |
| |
| void COMP_E_disableInterrupt(uint32_t comparator, uint_fast16_t mask) |
| { |
| COMP_E_CMSIS(comparator)->rINT.r &= ~(mask); |
| } |
| |
| void COMP_E_clearInterruptFlag(uint32_t comparator, uint_fast16_t mask) |
| { |
| COMP_E_CMSIS(comparator)->rINT.r &= ~(mask); |
| } |
| |
| uint_fast16_t COMP_E_getInterruptStatus(uint32_t comparator) |
| { |
| return (COMP_E_CMSIS(comparator)->rINT.r & (COMP_E_OUTPUT_INTERRUPT_FLAG | |
| COMP_E_INTERRUPT_FLAG_INVERTED_POLARITY | |
| COMP_E_INTERRUPT_FLAG_READY)); |
| } |
| |
| void COMP_E_setInterruptEdgeDirection(uint32_t comparator, |
| uint_fast8_t edgeDirection) |
| { |
| ASSERT(edgeDirection <= COMP_E_RISINGEDGE); |
| |
| // Set the edge direction that will trigger an interrupt |
| if (COMP_E_RISINGEDGE == edgeDirection) |
| BITBAND_PERI(COMP_E_CMSIS(comparator)->rCTL1.r, CEIES_OFS) = 1; |
| else if (COMP_E_FALLINGEDGE == edgeDirection) |
| BITBAND_PERI(COMP_E_CMSIS(comparator)->rCTL1.r, CEIES_OFS) = 0; |
| } |
| |
| void COMP_E_toggleInterruptEdgeDirection(uint32_t comparator) |
| { |
| COMP_E_CMSIS(comparator)->rCTL1.r ^= CEIES; |
| } |
| |
| void COMP_E_registerInterrupt(uint32_t comparator, void (*intHandler)(void)) |
| { |
| switch (comparator) |
| { |
| case COMP_E0_MODULE: |
| Interrupt_registerInterrupt(INT_COMP_E0, intHandler); |
| Interrupt_enableInterrupt(INT_COMP_E0); |
| break; |
| case COMP_E1_MODULE: |
| Interrupt_registerInterrupt(INT_COMP_E1, intHandler); |
| Interrupt_enableInterrupt(INT_COMP_E1); |
| break; |
| default: |
| ASSERT(false); |
| } |
| } |
| |
| void COMP_E_unregisterInterrupt(uint32_t comparator) |
| { |
| switch (comparator) |
| { |
| case COMP_E0_MODULE: |
| Interrupt_disableInterrupt(INT_COMP_E0); |
| Interrupt_unregisterInterrupt(INT_COMP_E0); |
| break; |
| case COMP_E1_MODULE: |
| Interrupt_disableInterrupt(INT_COMP_E1); |
| Interrupt_unregisterInterrupt(INT_COMP_E1); |
| break; |
| default: |
| ASSERT(false); |
| } |
| } |
| |