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_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;
}
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)->CTL0 = 0;
COMP_E_CMSIS(comparator)->INT = 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)->CTL0 |= COMP_E_CTL0_IPEN
+ positiveTerminalInput;
// Disable the input buffer
COMP_E_CMSIS(comparator)->CTL3 |= (1 << positiveTerminalInput);
} else
{
// Reset and Set COMPE Control 2 Register
BITBAND_PERI(COMP_E_CMSIS(comparator)->CTL2,COMP_E_CTL2_RSEL_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)->CTL0 |= COMP_E_CTL0_IMEN
+ (negativeTerminalInput << 8);
// Disable the input buffer
COMP_E_CMSIS(comparator)->CTL3 |= (1 << negativeTerminalInput);
} else
{
// Reset and Set COMPE Control 2 Register
BITBAND_PERI(COMP_E_CMSIS(comparator)->CTL2, COMP_E_CTL2_RSEL_OFS) = 1;
}
// Reset and Set COMPE Control 1 Register
COMP_E_CMSIS(comparator)->CTL1 = 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_disableInterrupt(uint32_t comparator, uint_fast16_t mask)
{
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_enableInterrupt(uint32_t comparator, uint_fast16_t mask)
{
// Set the Interrupt enable bit
COMP_E_CMSIS(comparator)->rINT.r |= mask;
}
uint8_t COMP_E_outputValue(uint32_t comparator)
{
return COMP_E_CMSIS(comparator)->rCTL1.r & CEOUT;
}
void COMP_E_swapIO(uint32_t comparator)
{
COMP_E_CMSIS(comparator)->rCTL1.r ^= CEEX; // Toggle CEEX bit
}
void COMP_E_enableModule(uint32_t comparator)
{
BITBAND_PERI(COMP_E_CMSIS(comparator)->CTL1, COMP_E_CTL1_ON_OFS) = 1;
}
void COMP_E_disableModule(uint32_t comparator)
{
BITBAND_PERI(COMP_E_CMSIS(comparator)->rCTL1.r, CEON_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;
}
uint8_t COMP_E_outputValue(uint32_t comparator)
{
return COMP_E_CMSIS(comparator)->CTL1 & COMP_E_CTL1_OUT;
}
void COMP_E_shortInputs(uint32_t comparator)
{
BITBAND_PERI(COMP_E_CMSIS(comparator)->CTL1, COMP_E_CTL1_SHORT_OFS) = 1;
}
void COMP_E_clearInterruptFlag(uint32_t comparator, uint_fast16_t mask)
{
COMP_E_CMSIS(comparator)->rINT.r &= ~(mask);
}
void COMP_E_unshortInputs(uint32_t comparator)
{
BITBAND_PERI(COMP_E_CMSIS(comparator)->rCTL1.r, CESHORT_OFS) = 0;
}
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_enableInputBuffer(uint32_t comparator, uint_fast16_t inputPort)
{
ASSERT(inputPort <= COMP_E_INPUT15);
COMP_E_CMSIS(comparator)->rCTL3.r &= ~(inputPort);
}
void COMP_E_toggleInterruptEdgeDirection(uint32_t comparator)
{
COMP_E_CMSIS(comparator)->rCTL1.r ^= CEIES;
}
void COMP_E_setPowerMode(uint32_t comparator, uint_fast16_t powerMode)
{
COMP_E_CMSIS(comparator)->CTL1 = (COMP_E_CMSIS(comparator)->CTL1
& ~(COMP_E_CTL1_PWRMD_MASK)) | powerMode;
}