ACMP

Detailed Description

Analog comparator (ACMP) Peripheral API.

The Analog Comparator is used to compare the voltage of two analog inputs, with a digital output indicating which input voltage is higher. Inputs can either be one of the selectable internal references or from external pins. Response time and thereby also the current consumption can be configured by altering the current supply to the comparator.

The ACMP is available down to EM3 and is able to wakeup the system when input signals pass a certain threshold. Use ACMP_IntEnable to enable an edge interrupt to use this functionality.

Here is an example of how to use the em_acmp.h API for comparing an input pin to an internal 2.5V reference voltage.

/* The ACMP is a high-frequency peripheral so we need to enable
 * both the HFPER clock and the ACMP0 clock. */
CMU_ClockEnable(cmuClock_HFPER, true);
CMU_ClockEnable(cmuClock_ACMP0, true);

/* Initialize with default settings. */
ACMP_Init_TypeDef init = ACMP_INIT_DEFAULT;
init.enable = false;
ACMP_Init(ACMP0, &init);

/* In this example we want to compare an analog input to the 2.5 V
 * internal reference. To achieve this we first have to configure the
 * VB source which is used for internal reference voltages. */
ACMP_VBConfig_TypeDef vbconfig = ACMP_VBCONFIG_DEFAULT;
vbconfig.input = acmpVBInput2V5;
ACMP_VBSetup(ACMP0, &vbconfig);

/* Now we select the two inputs to compare. Here we compare the APORT0XCH0
 * input to the internal 2.5V reference that we previously configured. When
 * APORT0XCH0 is lower than 2.5 V then the ACMP output is 0 and when
 * APORT0XCH0 is is higher than 2.5 V then the ACMP output is 1. */
ACMP_ChannelSet(ACMP0, acmpInputVBDIV, acmpInputAPORT0XCH0);

/* To be able to probe the output we can send the ACMP output to a pin.
 * The second argument to this function is the pin location which is
 * device dependent. */
ACMP_GPIOSetup(ACMP0, 0, true, false);

/* Finally we enable the ACMP. */
ACMP_Enable(ACMP0);

Note

The ACMP can also be used to compare two separate input pins.

The ACMP also contains specialized hardware for capacitive sensing. This module contains the function ACMP_CapsenseInit for initializing the ACMP for capacitive sensing and the function ACMP_CapsenseChannelSet for selecting the current capsense channel.

For applications that require capacitive sensing it is recommended to use a library like cslib which is provided by Silicon Labs.

Data Structures
struct	ACMP_CapsenseInit_TypeDef
struct	ACMP_Init_TypeDef
struct	ACMP_VAConfig_TypeDef
struct	ACMP_VBConfig_TypeDef

Macros
#define	ACMP_CAPSENSE_INIT_DEFAULT
#define	ACMP_INIT_DEFAULT
#define	ACMP_VACONFIG_DEFAULT
#define	ACMP_VBCONFIG_DEFAULT

Enumerations
enum	ACMP_Accuracy_TypeDef {   acmpAccuracyLow = _ACMP_CTRL_ACCURACY_LOW,   acmpAccuracyHigh = _ACMP_CTRL_ACCURACY_HIGH }
enum	ACMP_CapsenseResistor_TypeDef {   acmpResistor0 = _ACMP_INPUTSEL_CSRESSEL_RES0,   acmpResistor1 = _ACMP_INPUTSEL_CSRESSEL_RES1,   acmpResistor2 = _ACMP_INPUTSEL_CSRESSEL_RES2,   acmpResistor3 = _ACMP_INPUTSEL_CSRESSEL_RES3,   acmpResistor4 = _ACMP_INPUTSEL_CSRESSEL_RES4,   acmpResistor5 = _ACMP_INPUTSEL_CSRESSEL_RES5,   acmpResistor6 = _ACMP_INPUTSEL_CSRESSEL_RES6,   acmpResistor7 = _ACMP_INPUTSEL_CSRESSEL_RES7 }
enum	ACMP_Channel_TypeDef {   acmpInputAPORT0XCH0 = _ACMP_INPUTSEL_POSSEL_APORT0XCH0,   acmpInputAPORT0XCH1 = _ACMP_INPUTSEL_POSSEL_APORT0XCH1,   acmpInputAPORT0XCH2 = _ACMP_INPUTSEL_POSSEL_APORT0XCH2,   acmpInputAPORT0XCH3 = _ACMP_INPUTSEL_POSSEL_APORT0XCH3,   acmpInputAPORT0XCH4 = _ACMP_INPUTSEL_POSSEL_APORT0XCH4,   acmpInputAPORT0XCH5 = _ACMP_INPUTSEL_POSSEL_APORT0XCH5,   acmpInputAPORT0XCH6 = _ACMP_INPUTSEL_POSSEL_APORT0XCH6,   acmpInputAPORT0XCH7 = _ACMP_INPUTSEL_POSSEL_APORT0XCH7,   acmpInputAPORT0XCH8 = _ACMP_INPUTSEL_POSSEL_APORT0XCH8,   acmpInputAPORT0XCH9 = _ACMP_INPUTSEL_POSSEL_APORT0XCH9,   acmpInputAPORT0XCH10 = _ACMP_INPUTSEL_POSSEL_APORT0XCH10,   acmpInputAPORT0XCH11 = _ACMP_INPUTSEL_POSSEL_APORT0XCH11,   acmpInputAPORT0XCH12 = _ACMP_INPUTSEL_POSSEL_APORT0XCH12,   acmpInputAPORT0XCH13 = _ACMP_INPUTSEL_POSSEL_APORT0XCH13,   acmpInputAPORT0XCH14 = _ACMP_INPUTSEL_POSSEL_APORT0XCH14,   acmpInputAPORT0XCH15 = _ACMP_INPUTSEL_POSSEL_APORT0XCH15,   acmpInputAPORT0YCH0 = _ACMP_INPUTSEL_POSSEL_APORT0YCH0,   acmpInputAPORT0YCH1 = _ACMP_INPUTSEL_POSSEL_APORT0YCH1,   acmpInputAPORT0YCH2 = _ACMP_INPUTSEL_POSSEL_APORT0YCH2,   acmpInputAPORT0YCH3 = _ACMP_INPUTSEL_POSSEL_APORT0YCH3,   acmpInputAPORT0YCH4 = _ACMP_INPUTSEL_POSSEL_APORT0YCH4,   acmpInputAPORT0YCH5 = _ACMP_INPUTSEL_POSSEL_APORT0YCH5,   acmpInputAPORT0YCH6 = _ACMP_INPUTSEL_POSSEL_APORT0YCH6,   acmpInputAPORT0YCH7 = _ACMP_INPUTSEL_POSSEL_APORT0YCH7,   acmpInputAPORT0YCH8 = _ACMP_INPUTSEL_POSSEL_APORT0YCH8,   acmpInputAPORT0YCH9 = _ACMP_INPUTSEL_POSSEL_APORT0YCH9,   acmpInputAPORT0YCH10 = _ACMP_INPUTSEL_POSSEL_APORT0YCH10,   acmpInputAPORT0YCH11 = _ACMP_INPUTSEL_POSSEL_APORT0YCH11,   acmpInputAPORT0YCH12 = _ACMP_INPUTSEL_POSSEL_APORT0YCH12,   acmpInputAPORT0YCH13 = _ACMP_INPUTSEL_POSSEL_APORT0YCH13,   acmpInputAPORT0YCH14 = _ACMP_INPUTSEL_POSSEL_APORT0YCH14,   acmpInputAPORT0YCH15 = _ACMP_INPUTSEL_POSSEL_APORT0YCH15,   acmpInputAPORT1XCH0 = _ACMP_INPUTSEL_POSSEL_APORT1XCH0,   acmpInputAPORT1YCH1 = _ACMP_INPUTSEL_POSSEL_APORT1YCH1,   acmpInputAPORT1XCH2 = _ACMP_INPUTSEL_POSSEL_APORT1XCH2,   acmpInputAPORT1YCH3 = _ACMP_INPUTSEL_POSSEL_APORT1YCH3,   acmpInputAPORT1XCH4 = _ACMP_INPUTSEL_POSSEL_APORT1XCH4,   acmpInputAPORT1YCH5 = _ACMP_INPUTSEL_POSSEL_APORT1YCH5,   acmpInputAPORT1XCH6 = _ACMP_INPUTSEL_POSSEL_APORT1XCH6,   acmpInputAPORT1YCH7 = _ACMP_INPUTSEL_POSSEL_APORT1YCH7,   acmpInputAPORT1XCH8 = _ACMP_INPUTSEL_POSSEL_APORT1XCH8,   acmpInputAPORT1YCH9 = _ACMP_INPUTSEL_POSSEL_APORT1YCH9,   acmpInputAPORT1XCH10 = _ACMP_INPUTSEL_POSSEL_APORT1XCH10,   acmpInputAPORT1YCH11 = _ACMP_INPUTSEL_POSSEL_APORT1YCH11,   acmpInputAPORT1XCH12 = _ACMP_INPUTSEL_POSSEL_APORT1XCH12,   acmpInputAPORT1YCH13 = _ACMP_INPUTSEL_POSSEL_APORT1YCH13,   acmpInputAPORT1XCH14 = _ACMP_INPUTSEL_POSSEL_APORT1XCH14,   acmpInputAPORT1YCH15 = _ACMP_INPUTSEL_POSSEL_APORT1YCH15,   acmpInputAPORT1XCH16 = _ACMP_INPUTSEL_POSSEL_APORT1XCH16,   acmpInputAPORT1YCH17 = _ACMP_INPUTSEL_POSSEL_APORT1YCH17,   acmpInputAPORT1XCH18 = _ACMP_INPUTSEL_POSSEL_APORT1XCH18,   acmpInputAPORT1YCH19 = _ACMP_INPUTSEL_POSSEL_APORT1YCH19,   acmpInputAPORT1XCH20 = _ACMP_INPUTSEL_POSSEL_APORT1XCH20,   acmpInputAPORT1YCH21 = _ACMP_INPUTSEL_POSSEL_APORT1YCH21,   acmpInputAPORT1XCH22 = _ACMP_INPUTSEL_POSSEL_APORT1XCH22,   acmpInputAPORT1YCH23 = _ACMP_INPUTSEL_POSSEL_APORT1YCH23,   acmpInputAPORT1XCH24 = _ACMP_INPUTSEL_POSSEL_APORT1XCH24,   acmpInputAPORT1YCH25 = _ACMP_INPUTSEL_POSSEL_APORT1YCH25,   acmpInputAPORT1XCH26 = _ACMP_INPUTSEL_POSSEL_APORT1XCH26,   acmpInputAPORT1YCH27 = _ACMP_INPUTSEL_POSSEL_APORT1YCH27,   acmpInputAPORT1XCH28 = _ACMP_INPUTSEL_POSSEL_APORT1XCH28,   acmpInputAPORT1YCH29 = _ACMP_INPUTSEL_POSSEL_APORT1YCH29,   acmpInputAPORT1XCH30 = _ACMP_INPUTSEL_POSSEL_APORT1XCH30,   acmpInputAPORT1YCH31 = _ACMP_INPUTSEL_POSSEL_APORT1YCH31,   acmpInputAPORT2YCH0 = _ACMP_INPUTSEL_POSSEL_APORT2YCH0,   acmpInputAPORT2XCH1 = _ACMP_INPUTSEL_POSSEL_APORT2XCH1,   acmpInputAPORT2YCH2 = _ACMP_INPUTSEL_POSSEL_APORT2YCH2,   acmpInputAPORT2XCH3 = _ACMP_INPUTSEL_POSSEL_APORT2XCH3,   acmpInputAPORT2YCH4 = _ACMP_INPUTSEL_POSSEL_APORT2YCH4,   acmpInputAPORT2XCH5 = _ACMP_INPUTSEL_POSSEL_APORT2XCH5,   acmpInputAPORT2YCH6 = _ACMP_INPUTSEL_POSSEL_APORT2YCH6,   acmpInputAPORT2XCH7 = _ACMP_INPUTSEL_POSSEL_APORT2XCH7,   acmpInputAPORT2YCH8 = _ACMP_INPUTSEL_POSSEL_APORT2YCH8,   acmpInputAPORT2XCH9 = _ACMP_INPUTSEL_POSSEL_APORT2XCH9,   acmpInputAPORT2YCH10 = _ACMP_INPUTSEL_POSSEL_APORT2YCH10,   acmpInputAPORT2XCH11 = _ACMP_INPUTSEL_POSSEL_APORT2XCH11,   acmpInputAPORT2YCH12 = _ACMP_INPUTSEL_POSSEL_APORT2YCH12,   acmpInputAPORT2XCH13 = _ACMP_INPUTSEL_POSSEL_APORT2XCH13,   acmpInputAPORT2YCH14 = _ACMP_INPUTSEL_POSSEL_APORT2YCH14,   acmpInputAPORT2XCH15 = _ACMP_INPUTSEL_POSSEL_APORT2XCH15,   acmpInputAPORT2YCH16 = _ACMP_INPUTSEL_POSSEL_APORT2YCH16,   acmpInputAPORT2XCH17 = _ACMP_INPUTSEL_POSSEL_APORT2XCH17,   acmpInputAPORT2YCH18 = _ACMP_INPUTSEL_POSSEL_APORT2YCH18,   acmpInputAPORT2XCH19 = _ACMP_INPUTSEL_POSSEL_APORT2XCH19,   acmpInputAPORT2YCH20 = _ACMP_INPUTSEL_POSSEL_APORT2YCH20,   acmpInputAPORT2XCH21 = _ACMP_INPUTSEL_POSSEL_APORT2XCH21,   acmpInputAPORT2YCH22 = _ACMP_INPUTSEL_POSSEL_APORT2YCH22,   acmpInputAPORT2XCH23 = _ACMP_INPUTSEL_POSSEL_APORT2XCH23,   acmpInputAPORT2YCH24 = _ACMP_INPUTSEL_POSSEL_APORT2YCH24,   acmpInputAPORT2XCH25 = _ACMP_INPUTSEL_POSSEL_APORT2XCH25,   acmpInputAPORT2YCH26 = _ACMP_INPUTSEL_POSSEL_APORT2YCH26,   acmpInputAPORT2XCH27 = _ACMP_INPUTSEL_POSSEL_APORT2XCH27,   acmpInputAPORT2YCH28 = _ACMP_INPUTSEL_POSSEL_APORT2YCH28,   acmpInputAPORT2XCH29 = _ACMP_INPUTSEL_POSSEL_APORT2XCH29,   acmpInputAPORT2YCH30 = _ACMP_INPUTSEL_POSSEL_APORT2YCH30,   acmpInputAPORT2XCH31 = _ACMP_INPUTSEL_POSSEL_APORT2XCH31,   acmpInputAPORT3XCH0 = _ACMP_INPUTSEL_POSSEL_APORT3XCH0,   acmpInputAPORT3YCH1 = _ACMP_INPUTSEL_POSSEL_APORT3YCH1,   acmpInputAPORT3XCH2 = _ACMP_INPUTSEL_POSSEL_APORT3XCH2,   acmpInputAPORT3YCH3 = _ACMP_INPUTSEL_POSSEL_APORT3YCH3,   acmpInputAPORT3XCH4 = _ACMP_INPUTSEL_POSSEL_APORT3XCH4,   acmpInputAPORT3YCH5 = _ACMP_INPUTSEL_POSSEL_APORT3YCH5,   acmpInputAPORT3XCH6 = _ACMP_INPUTSEL_POSSEL_APORT3XCH6,   acmpInputAPORT3YCH7 = _ACMP_INPUTSEL_POSSEL_APORT3YCH7,   acmpInputAPORT3XCH8 = _ACMP_INPUTSEL_POSSEL_APORT3XCH8,   acmpInputAPORT3YCH9 = _ACMP_INPUTSEL_POSSEL_APORT3YCH9,   acmpInputAPORT3XCH10 = _ACMP_INPUTSEL_POSSEL_APORT3XCH10,   acmpInputAPORT3YCH11 = _ACMP_INPUTSEL_POSSEL_APORT3YCH11,   acmpInputAPORT3XCH12 = _ACMP_INPUTSEL_POSSEL_APORT3XCH12,   acmpInputAPORT3YCH13 = _ACMP_INPUTSEL_POSSEL_APORT3YCH13,   acmpInputAPORT3XCH14 = _ACMP_INPUTSEL_POSSEL_APORT3XCH14,   acmpInputAPORT3YCH15 = _ACMP_INPUTSEL_POSSEL_APORT3YCH15,   acmpInputAPORT3XCH16 = _ACMP_INPUTSEL_POSSEL_APORT3XCH16,   acmpInputAPORT3YCH17 = _ACMP_INPUTSEL_POSSEL_APORT3YCH17,   acmpInputAPORT3XCH18 = _ACMP_INPUTSEL_POSSEL_APORT3XCH18,   acmpInputAPORT3YCH19 = _ACMP_INPUTSEL_POSSEL_APORT3YCH19,   acmpInputAPORT3XCH20 = _ACMP_INPUTSEL_POSSEL_APORT3XCH20,   acmpInputAPORT3YCH21 = _ACMP_INPUTSEL_POSSEL_APORT3YCH21,   acmpInputAPORT3XCH22 = _ACMP_INPUTSEL_POSSEL_APORT3XCH22,   acmpInputAPORT3YCH23 = _ACMP_INPUTSEL_POSSEL_APORT3YCH23,   acmpInputAPORT3XCH24 = _ACMP_INPUTSEL_POSSEL_APORT3XCH24,   acmpInputAPORT3YCH25 = _ACMP_INPUTSEL_POSSEL_APORT3YCH25,   acmpInputAPORT3XCH26 = _ACMP_INPUTSEL_POSSEL_APORT3XCH26,   acmpInputAPORT3YCH27 = _ACMP_INPUTSEL_POSSEL_APORT3YCH27,   acmpInputAPORT3XCH28 = _ACMP_INPUTSEL_POSSEL_APORT3XCH28,   acmpInputAPORT3YCH29 = _ACMP_INPUTSEL_POSSEL_APORT3YCH29,   acmpInputAPORT3XCH30 = _ACMP_INPUTSEL_POSSEL_APORT3XCH30,   acmpInputAPORT3YCH31 = _ACMP_INPUTSEL_POSSEL_APORT3YCH31,   acmpInputAPORT4YCH0 = _ACMP_INPUTSEL_POSSEL_APORT4YCH0,   acmpInputAPORT4XCH1 = _ACMP_INPUTSEL_POSSEL_APORT4XCH1,   acmpInputAPORT4YCH2 = _ACMP_INPUTSEL_POSSEL_APORT4YCH2,   acmpInputAPORT4XCH3 = _ACMP_INPUTSEL_POSSEL_APORT4XCH3,   acmpInputAPORT4YCH4 = _ACMP_INPUTSEL_POSSEL_APORT4YCH4,   acmpInputAPORT4XCH5 = _ACMP_INPUTSEL_POSSEL_APORT4XCH5,   acmpInputAPORT4YCH6 = _ACMP_INPUTSEL_POSSEL_APORT4YCH6,   acmpInputAPORT4XCH7 = _ACMP_INPUTSEL_POSSEL_APORT4XCH7,   acmpInputAPORT4YCH8 = _ACMP_INPUTSEL_POSSEL_APORT4YCH8,   acmpInputAPORT4XCH9 = _ACMP_INPUTSEL_POSSEL_APORT4XCH9,   acmpInputAPORT4YCH10 = _ACMP_INPUTSEL_POSSEL_APORT4YCH10,   acmpInputAPORT4XCH11 = _ACMP_INPUTSEL_POSSEL_APORT4XCH11,   acmpInputAPORT4YCH12 = _ACMP_INPUTSEL_POSSEL_APORT4YCH12,   acmpInputAPORT4XCH13 = _ACMP_INPUTSEL_POSSEL_APORT4XCH13,   acmpInputAPORT4YCH16 = _ACMP_INPUTSEL_POSSEL_APORT4YCH16,   acmpInputAPORT4XCH17 = _ACMP_INPUTSEL_POSSEL_APORT4XCH17,   acmpInputAPORT4YCH18 = _ACMP_INPUTSEL_POSSEL_APORT4YCH18,   acmpInputAPORT4XCH19 = _ACMP_INPUTSEL_POSSEL_APORT4XCH19,   acmpInputAPORT4YCH20 = _ACMP_INPUTSEL_POSSEL_APORT4YCH20,   acmpInputAPORT4XCH21 = _ACMP_INPUTSEL_POSSEL_APORT4XCH21,   acmpInputAPORT4YCH22 = _ACMP_INPUTSEL_POSSEL_APORT4YCH22,   acmpInputAPORT4XCH23 = _ACMP_INPUTSEL_POSSEL_APORT4XCH23,   acmpInputAPORT4YCH24 = _ACMP_INPUTSEL_POSSEL_APORT4YCH24,   acmpInputAPORT4XCH25 = _ACMP_INPUTSEL_POSSEL_APORT4XCH25,   acmpInputAPORT4YCH26 = _ACMP_INPUTSEL_POSSEL_APORT4YCH26,   acmpInputAPORT4XCH27 = _ACMP_INPUTSEL_POSSEL_APORT4XCH27,   acmpInputAPORT4YCH28 = _ACMP_INPUTSEL_POSSEL_APORT4YCH28,   acmpInputAPORT4XCH29 = _ACMP_INPUTSEL_POSSEL_APORT4XCH29,   acmpInputAPORT4YCH30 = _ACMP_INPUTSEL_POSSEL_APORT4YCH30,   acmpInputAPORT4YCH14 = _ACMP_INPUTSEL_POSSEL_APORT4YCH14,   acmpInputAPORT4XCH15 = _ACMP_INPUTSEL_POSSEL_APORT4XCH15,   acmpInputAPORT4XCH31 = _ACMP_INPUTSEL_POSSEL_APORT4XCH31,   acmpInputDACOUT0 = _ACMP_INPUTSEL_POSSEL_DACOUT0,   acmpInputDACOUT1 = _ACMP_INPUTSEL_POSSEL_DACOUT1,   acmpInputVLP = _ACMP_INPUTSEL_POSSEL_VLP,   acmpInputVBDIV = _ACMP_INPUTSEL_POSSEL_VBDIV,   acmpInputVADIV = _ACMP_INPUTSEL_POSSEL_VADIV,   acmpInputVDD = _ACMP_INPUTSEL_POSSEL_VDD,   acmpInputVSS = _ACMP_INPUTSEL_POSSEL_VSS }
enum	ACMP_ExternalInput_Typedef {   acmpExternalInputAPORT0X = _ACMP_EXTIFCTRL_APORTSEL_APORT0X,   acmpExternalInputAPORT0Y = _ACMP_EXTIFCTRL_APORTSEL_APORT0Y,   acmpExternalInputAPORT1X = _ACMP_EXTIFCTRL_APORTSEL_APORT1X,   acmpExternalInputAPORT1Y = _ACMP_EXTIFCTRL_APORTSEL_APORT1Y,   acmpExternalInputAPORT1XY = _ACMP_EXTIFCTRL_APORTSEL_APORT1XY,   acmpExternalInputAPORT2X = _ACMP_EXTIFCTRL_APORTSEL_APORT2X,   acmpExternalInputAPORT2Y = _ACMP_EXTIFCTRL_APORTSEL_APORT2Y,   acmpExternalInputAPORT2YX = _ACMP_EXTIFCTRL_APORTSEL_APORT2YX,   acmpExternalInputAPORT3X = _ACMP_EXTIFCTRL_APORTSEL_APORT3X,   acmpExternalInputAPORT3Y = _ACMP_EXTIFCTRL_APORTSEL_APORT3Y,   acmpExternalInputAPORT3XY = _ACMP_EXTIFCTRL_APORTSEL_APORT3XY,   acmpExternalInputAPORT4X = _ACMP_EXTIFCTRL_APORTSEL_APORT4X,   acmpExternalInputAPORT4Y = _ACMP_EXTIFCTRL_APORTSEL_APORT4Y,   acmpExternalInputAPORT4YX = _ACMP_EXTIFCTRL_APORTSEL_APORT4YX }
enum	ACMP_HysteresisLevel_TypeDef {   acmpHysteresisLevel0 = _ACMP_HYSTERESIS0_HYST_HYST0,   acmpHysteresisLevel1 = _ACMP_HYSTERESIS0_HYST_HYST1,   acmpHysteresisLevel2 = _ACMP_HYSTERESIS0_HYST_HYST2,   acmpHysteresisLevel3 = _ACMP_HYSTERESIS0_HYST_HYST3,   acmpHysteresisLevel4 = _ACMP_HYSTERESIS0_HYST_HYST4,   acmpHysteresisLevel5 = _ACMP_HYSTERESIS0_HYST_HYST5,   acmpHysteresisLevel6 = _ACMP_HYSTERESIS0_HYST_HYST6,   acmpHysteresisLevel7 = _ACMP_HYSTERESIS0_HYST_HYST7,   acmpHysteresisLevel8 = _ACMP_HYSTERESIS0_HYST_HYST8,   acmpHysteresisLevel9 = _ACMP_HYSTERESIS0_HYST_HYST9,   acmpHysteresisLevel10 = _ACMP_HYSTERESIS0_HYST_HYST10,   acmpHysteresisLevel11 = _ACMP_HYSTERESIS0_HYST_HYST11,   acmpHysteresisLevel12 = _ACMP_HYSTERESIS0_HYST_HYST12,   acmpHysteresisLevel13 = _ACMP_HYSTERESIS0_HYST_HYST13,   acmpHysteresisLevel14 = _ACMP_HYSTERESIS0_HYST_HYST14,   acmpHysteresisLevel15 = _ACMP_HYSTERESIS0_HYST_HYST15 }
enum	ACMP_InputRange_TypeDef {   acmpInputRangeFull = _ACMP_CTRL_INPUTRANGE_FULL,   acmpInputRangeHigh = _ACMP_CTRL_INPUTRANGE_GTVDDDIV2,   acmpInputRangeLow = _ACMP_CTRL_INPUTRANGE_LTVDDDIV2 }
enum	ACMP_PowerSource_TypeDef {   acmpPowerSourceAvdd = _ACMP_CTRL_PWRSEL_AVDD,   acmpPowerSourceVddVreg = _ACMP_CTRL_PWRSEL_VREGVDD,   acmpPowerSourceIOVdd0 = _ACMP_CTRL_PWRSEL_IOVDD0,   acmpPowerSourceIOVdd1 = _ACMP_CTRL_PWRSEL_IOVDD1 }
enum	ACMP_VAInput_TypeDef {   acmpVAInputVDD = _ACMP_INPUTSEL_VASEL_VDD,   acmpVAInputAPORT2YCH0 = _ACMP_INPUTSEL_VASEL_APORT2YCH0,   acmpVAInputAPORT2YCH2 = _ACMP_INPUTSEL_VASEL_APORT2YCH2,   acmpVAInputAPORT2YCH4 = _ACMP_INPUTSEL_VASEL_APORT2YCH4,   acmpVAInputAPORT2YCH6 = _ACMP_INPUTSEL_VASEL_APORT2YCH6,   acmpVAInputAPORT2YCH8 = _ACMP_INPUTSEL_VASEL_APORT2YCH8,   acmpVAInputAPORT2YCH10 = _ACMP_INPUTSEL_VASEL_APORT2YCH10,   acmpVAInputAPORT2YCH12 = _ACMP_INPUTSEL_VASEL_APORT2YCH12,   acmpVAInputAPORT2YCH14 = _ACMP_INPUTSEL_VASEL_APORT2YCH14,   acmpVAInputAPORT2YCH16 = _ACMP_INPUTSEL_VASEL_APORT2YCH16,   acmpVAInputAPORT2YCH18 = _ACMP_INPUTSEL_VASEL_APORT2YCH18,   acmpVAInputAPORT2YCH20 = _ACMP_INPUTSEL_VASEL_APORT2YCH20,   acmpVAInputAPORT2YCH22 = _ACMP_INPUTSEL_VASEL_APORT2YCH22,   acmpVAInputAPORT2YCH24 = _ACMP_INPUTSEL_VASEL_APORT2YCH24,   acmpVAInputAPORT2YCH26 = _ACMP_INPUTSEL_VASEL_APORT2YCH26,   acmpVAInputAPORT2YCH28 = _ACMP_INPUTSEL_VASEL_APORT2YCH28,   acmpVAInputAPORT2YCH30 = _ACMP_INPUTSEL_VASEL_APORT2YCH30,   acmpVAInputAPORT1XCH0 = _ACMP_INPUTSEL_VASEL_APORT1XCH0,   acmpVAInputAPORT1YCH1 = _ACMP_INPUTSEL_VASEL_APORT1YCH1,   acmpVAInputAPORT1XCH2 = _ACMP_INPUTSEL_VASEL_APORT1XCH2,   acmpVAInputAPORT1YCH3 = _ACMP_INPUTSEL_VASEL_APORT1YCH3,   acmpVAInputAPORT1XCH4 = _ACMP_INPUTSEL_VASEL_APORT1XCH4,   acmpVAInputAPORT1YCH5 = _ACMP_INPUTSEL_VASEL_APORT1YCH5,   acmpVAInputAPORT1XCH6 = _ACMP_INPUTSEL_VASEL_APORT1XCH6,   acmpVAInputAPORT1YCH7 = _ACMP_INPUTSEL_VASEL_APORT1YCH7,   acmpVAInputAPORT1XCH8 = _ACMP_INPUTSEL_VASEL_APORT1XCH8,   acmpVAInputAPORT1YCH9 = _ACMP_INPUTSEL_VASEL_APORT1YCH9,   acmpVAInputAPORT1XCH10 = _ACMP_INPUTSEL_VASEL_APORT1XCH10,   acmpVAInputAPORT1YCH11 = _ACMP_INPUTSEL_VASEL_APORT1YCH11,   acmpVAInputAPORT1XCH12 = _ACMP_INPUTSEL_VASEL_APORT1XCH12,   acmpVAInputAPORT1YCH13 = _ACMP_INPUTSEL_VASEL_APORT1YCH13,   acmpVAInputAPORT1XCH14 = _ACMP_INPUTSEL_VASEL_APORT1XCH14,   acmpVAInputAPORT1YCH15 = _ACMP_INPUTSEL_VASEL_APORT1YCH15,   acmpVAInputAPORT1XCH16 = _ACMP_INPUTSEL_VASEL_APORT1XCH16,   acmpVAInputAPORT1YCH17 = _ACMP_INPUTSEL_VASEL_APORT1YCH17,   acmpVAInputAPORT1XCH18 = _ACMP_INPUTSEL_VASEL_APORT1XCH18,   acmpVAInputAPORT1YCH19 = _ACMP_INPUTSEL_VASEL_APORT1YCH19,   acmpVAInputAPORT1XCH20 = _ACMP_INPUTSEL_VASEL_APORT1XCH20,   acmpVAInputAPORT1YCH21 = _ACMP_INPUTSEL_VASEL_APORT1YCH21,   acmpVAInputAPORT1XCH22 = _ACMP_INPUTSEL_VASEL_APORT1XCH22,   acmpVAInputAPORT1YCH23 = _ACMP_INPUTSEL_VASEL_APORT1YCH23,   acmpVAInputAPORT1XCH24 = _ACMP_INPUTSEL_VASEL_APORT1XCH24,   acmpVAInputAPORT1YCH25 = _ACMP_INPUTSEL_VASEL_APORT1YCH25,   acmpVAInputAPORT1XCH26 = _ACMP_INPUTSEL_VASEL_APORT1XCH26,   acmpVAInputAPORT1YCH27 = _ACMP_INPUTSEL_VASEL_APORT1YCH27,   acmpVAInputAPORT1XCH28 = _ACMP_INPUTSEL_VASEL_APORT1XCH28,   acmpVAInputAPORT1YCH29 = _ACMP_INPUTSEL_VASEL_APORT1YCH29,   acmpVAInputAPORT1XCH30 = _ACMP_INPUTSEL_VASEL_APORT1XCH30,   acmpVAInputAPORT1YCH31 = _ACMP_INPUTSEL_VASEL_APORT1YCH31 }
enum	ACMP_VBInput_TypeDef {   acmpVBInput1V25 = _ACMP_INPUTSEL_VBSEL_1V25,   acmpVBInput2V5 = _ACMP_INPUTSEL_VBSEL_2V5 }
enum	ACMP_VLPInput_Typedef {   acmpVLPInputVADIV = _ACMP_INPUTSEL_VLPSEL_VADIV,   acmpVLPInputVBDIV = _ACMP_INPUTSEL_VLPSEL_VBDIV }

Functions
void	ACMP_CapsenseChannelSet (ACMP_TypeDef *acmp, ACMP_Channel_TypeDef channel)
	Sets the ACMP channel used for capacative sensing. More...
void	ACMP_CapsenseInit (ACMP_TypeDef *acmp, const ACMP_CapsenseInit_TypeDef *init)
	Sets up the ACMP for use in capacative sense applications. More...
void	ACMP_ChannelSet (ACMP_TypeDef *acmp, ACMP_Channel_TypeDef negSel, ACMP_Channel_TypeDef posSel)
	Sets which channels should be used in ACMP comparisons. More...
void	ACMP_Disable (ACMP_TypeDef *acmp)
	Disables the ACMP. More...
void	ACMP_Enable (ACMP_TypeDef *acmp)
	Enables the ACMP. More...
void	ACMP_ExternalInputSelect (ACMP_TypeDef *acmp, ACMP_ExternalInput_Typedef aport)
	Select and enable an external input. More...
void	ACMP_GPIOSetup (ACMP_TypeDef *acmp, uint32_t location, bool enable, bool invert)
	Sets up GPIO output from the ACMP. More...
void	ACMP_Init (ACMP_TypeDef *acmp, const ACMP_Init_TypeDef *init)
	Initialize ACMP. More...
__STATIC_INLINE void	ACMP_IntClear (ACMP_TypeDef *acmp, uint32_t flags)
	Clear one or more pending ACMP interrupts. More...
__STATIC_INLINE void	ACMP_IntDisable (ACMP_TypeDef *acmp, uint32_t flags)
	Disable one or more ACMP interrupts. More...
__STATIC_INLINE void	ACMP_IntEnable (ACMP_TypeDef *acmp, uint32_t flags)
	Enable one or more ACMP interrupts. More...
__STATIC_INLINE uint32_t	ACMP_IntGet (ACMP_TypeDef *acmp)
	Get pending ACMP interrupt flags. More...
__STATIC_INLINE uint32_t	ACMP_IntGetEnabled (ACMP_TypeDef *acmp)
	Get enabled and pending ACMP interrupt flags. Useful for handling more interrupt sources in the same interrupt handler. More...
__STATIC_INLINE void	ACMP_IntSet (ACMP_TypeDef *acmp, uint32_t flags)
	Set one or more pending ACMP interrupts from SW. More...
void	ACMP_Reset (ACMP_TypeDef *acmp)
	Reset ACMP to same state as after a HW reset. More...
void	ACMP_VASetup (ACMP_TypeDef *acmp, const ACMP_VAConfig_TypeDef *vaconfig)
	Setup the VA Source. More...
void	ACMP_VBSetup (ACMP_TypeDef *acmp, const ACMP_VBConfig_TypeDef *vbconfig)
	Setup the VB Source. More...

Macro Definition Documentation

#define ACMP_CAPSENSE_INIT_DEFAULT

Value:

{                                                                           \
  false,                /* Don't use fullBias to lower power consumption */ \
  0x20,                 /* Using biasProg value of 0x20 (32) */             \
  acmpHysteresisLevel8, /* Use hysteresis level 8 when ACMP output is 0 */  \
  acmpHysteresisLevel8, /* Use hysteresis level 8 when ACMP output is 1 */  \
  acmpResistor5,        /* Use internal resistor value 5 */                 \
  0x30,                 /* VDD level high */                                \
  0x10,                 /* VDD level low */                                 \
  true                  /* Enable after init. */                            \
}

Default config for capacitive sense mode initialization.

Definition at line 610 of file em_acmp.h.

Referenced by CAPSENSE_Init().

#define ACMP_INIT_DEFAULT

Value:

{                                                                           \
  false,                      /* fullBias */                                \
  0x7,                        /* biasProg */                                \
  false,                      /* No interrupt on falling edge. */           \
  false,                      /* No interrupt on rising edge. */            \
  acmpInputRangeFull,         /* Input range from 0 to Vdd. */              \
  acmpAccuracyLow,            /* Low accuracy, less current usage. */       \
  acmpPowerSourceAvdd,        /* Use the AVDD supply. */                    \
  acmpHysteresisLevel5,       /* Use hysteresis level 5 when output is 0 */ \
  acmpHysteresisLevel5,       /* Use hysteresis level 5 when output is 1 */ \
  acmpVLPInputVADIV,          /* Use VADIV as the VLP input source. */      \
  false,                      /* Output 0 when ACMP is inactive. */         \
  true                        /* Enable after init. */                      \
}

Default config for ACMP regular initialization.

Definition at line 733 of file em_acmp.h.

#define ACMP_VACONFIG_DEFAULT

Value:

{                                                                           \
  acmpVAInputVDD, /* Use Vdd as VA voltage input source */                  \
  63,             /* No division of the VA source when ACMP output is 0 */  \
  63,             /* No division of the VA source when ACMP output is 1 */  \
}

Definition at line 805 of file em_acmp.h.

#define ACMP_VBCONFIG_DEFAULT

Value:

{                                                                           \
  acmpVBInput1V25, /* Use 1.25 V as VB voltage input source */              \
  63,              /* No division of the VB source when ACMP output is 0 */ \
  63,              /* No division of the VB source when ACMP output is 1 */ \
}

Definition at line 839 of file em_acmp.h.

Enumeration Type Documentation

enum ACMP_Accuracy_TypeDef

ACMP accuracy mode.

Enumerator
acmpAccuracyLow	Low-accuracy mode but consume less current
acmpAccuracyHigh	High-accuracy mode but consume more current

Definition at line 199 of file em_acmp.h.

enum ACMP_CapsenseResistor_TypeDef

Resistor values used for the internal capacative sense resistor. See the datasheet for your device for details on each resistor value.

Enumerator
acmpResistor0	Resistor value 0
acmpResistor1	Resistor value 1
acmpResistor2	Resistor value 2
acmpResistor3	Resistor value 3
acmpResistor4	Resistor value 4
acmpResistor5	Resistor value 5
acmpResistor6	Resistor value 6
acmpResistor7	Resistor value 7

Definition at line 98 of file em_acmp.h.

enum ACMP_Channel_TypeDef

ACMP Input Selection

Definition at line 288 of file em_acmp.h.

enum ACMP_ExternalInput_Typedef

ACMP External input select. This type is used to select which APORT that is used by an external module like LESENSE when it's taking control over the ACMP input.

Definition at line 513 of file em_acmp.h.

enum ACMP_HysteresisLevel_TypeDef

Hysteresis level. See datasheet for your device for details on each level.

Enumerator
acmpHysteresisLevel0	Hysteresis level 0
acmpHysteresisLevel1	Hysteresis level 1
acmpHysteresisLevel2	Hysteresis level 2
acmpHysteresisLevel3	Hysteresis level 3
acmpHysteresisLevel4	Hysteresis level 4
acmpHysteresisLevel5	Hysteresis level 5
acmpHysteresisLevel6	Hysteresis level 6
acmpHysteresisLevel7	Hysteresis level 7
acmpHysteresisLevel8	Hysteresis level 8
acmpHysteresisLevel9	Hysteresis level 9
acmpHysteresisLevel10	Hysteresis level 10
acmpHysteresisLevel11	Hysteresis level 11
acmpHysteresisLevel12	Hysteresis level 12
acmpHysteresisLevel13	Hysteresis level 13
acmpHysteresisLevel14	Hysteresis level 14
acmpHysteresisLevel15	Hysteresis level 15

Definition at line 114 of file em_acmp.h.

enum ACMP_InputRange_TypeDef

Adjust performance of the ACMP for a given input voltage range

Enumerator
acmpInputRangeFull	Input can be from 0 to Vdd
acmpInputRangeHigh	Input will always be greater than Vdd/2
acmpInputRangeLow	Input will always be less than Vdd/2

Definition at line 174 of file em_acmp.h.

enum ACMP_PowerSource_TypeDef

ACMP Power source.

Enumerator
acmpPowerSourceAvdd	Power the ACMP using the AVDD supply
acmpPowerSourceVddVreg	Power the ACMP using the VREGVDD supply
acmpPowerSourceIOVdd0	Power the ACMP using the IOVDD/IOVDD0 supply
acmpPowerSourceIOVdd1	Power the ACMP using the IOVDD1 supply (if part has two I/O voltages)

Definition at line 186 of file em_acmp.h.

enum ACMP_VAInput_TypeDef

ACMP Input to the VA divider. This enum is used to select the input for the VA Divider

Definition at line 209 of file em_acmp.h.

enum ACMP_VBInput_TypeDef

ACMP Input to the VB divider. This enum is used to select the input for the VB divider.

Definition at line 268 of file em_acmp.h.

enum ACMP_VLPInput_Typedef

ACMP Low-Power Input Selection.

Definition at line 279 of file em_acmp.h.

Function Documentation

void ACMP_CapsenseChannelSet	(	ACMP_TypeDef *	acmp,
		ACMP_Channel_TypeDef	channel
	)

Sets the ACMP channel used for capacative sensing.

Note

A basic example of capacative sensing can be found in the STK BSP (capsense demo).

Parameters

[in]	acmp	Pointer to ACMP peripheral register block.
[in]	channel	The ACMP channel to use for capacative sensing (Possel).

Definition at line 185 of file em_acmp.c.

References _ACMP_INPUTSEL_POSSEL_MASK, _ACMP_INPUTSEL_POSSEL_SHIFT, BUS_RegMaskedWrite(), and ACMP_TypeDef::INPUTSEL.

Referenced by CAPSENSE_Measure().

void ACMP_CapsenseInit	(	ACMP_TypeDef *	acmp,
		const ACMP_CapsenseInit_TypeDef *	init
	)

Sets up the ACMP for use in capacative sense applications.

This function sets up the ACMP for use in capacacitve sense applications. To use the capacative sense functionality in the ACMP you need to use the PRS output of the ACMP module to count the number of oscillations in the capacative sense circuit (possibly using a TIMER).

Note

A basic example of capacative sensing can be found in the STK BSP (capsense demo).

Parameters

[in]	acmp	Pointer to ACMP peripheral register block.
[in]	init	Pointer to initialization structure used to configure ACMP for capacative sensing operation.

Definition at line 109 of file em_acmp.c.

References _ACMP_CTRL_ACCURACY_MASK, _ACMP_CTRL_BIASPROG_MASK, _ACMP_CTRL_BIASPROG_SHIFT, _ACMP_CTRL_EN_SHIFT, _ACMP_CTRL_FULLBIAS_SHIFT, _ACMP_HYSTERESIS0_DIVVA_SHIFT, _ACMP_HYSTERESIS0_HYST_SHIFT, _ACMP_HYSTERESIS1_DIVVA_SHIFT, _ACMP_HYSTERESIS1_HYST_SHIFT, _ACMP_INPUTSEL_CSRESSEL_SHIFT, ACMP_CTRL_ACCURACY_HIGH, ACMP_INPUTSEL_CSRESEN, ACMP_INPUTSEL_NEGSEL_VADIV, ACMP_INPUTSEL_VASEL_VDD, ACMP_CapsenseInit_TypeDef::biasProg, BUS_RegBitWrite(), ACMP_TypeDef::CTRL, ACMP_CapsenseInit_TypeDef::enable, ACMP_CapsenseInit_TypeDef::fullBias, ACMP_TypeDef::HYSTERESIS0, ACMP_TypeDef::HYSTERESIS1, ACMP_CapsenseInit_TypeDef::hysteresisLevel_0, ACMP_CapsenseInit_TypeDef::hysteresisLevel_1, ACMP_TypeDef::INPUTSEL, ACMP_CapsenseInit_TypeDef::resistor, ACMP_CapsenseInit_TypeDef::vddLevelHigh, and ACMP_CapsenseInit_TypeDef::vddLevelLow.

Referenced by CAPLESENSE_setupACMP(), and CAPSENSE_Init().

void ACMP_ChannelSet	(	ACMP_TypeDef *	acmp,
		ACMP_Channel_TypeDef	negSel,
		ACMP_Channel_TypeDef	posSel
	)

Sets which channels should be used in ACMP comparisons.

Parameters

[in]	acmp	Pointer to the ACMP peripheral register block.
	negSel	Channel to use on the negative input to the ACMP.
	posSel	Channel to use on the positive input to the ACMP.

Definition at line 340 of file em_acmp.c.

References _ACMP_INPUTSEL_NEGSEL_MASK, _ACMP_INPUTSEL_NEGSEL_SHIFT, _ACMP_INPUTSEL_POSSEL_MASK, _ACMP_INPUTSEL_POSSEL_SHIFT, and ACMP_TypeDef::INPUTSEL.

void ACMP_Disable

(

ACMP_TypeDef *

acmp

)

Disables the ACMP.

Parameters

[in]

acmp

Pointer to ACMP peripheral register block.

Definition at line 210 of file em_acmp.c.

References ACMP_CTRL_EN, and ACMP_TypeDef::CTRL.

Referenced by CAPSENSE_Sense().

void ACMP_Enable

(

ACMP_TypeDef *

acmp

)

Enables the ACMP.

Parameters

[in]

acmp

Pointer to ACMP peripheral register block.

Definition at line 225 of file em_acmp.c.

References ACMP_CTRL_EN, and ACMP_TypeDef::CTRL.

Referenced by CAPSENSE_Sense().

void ACMP_ExternalInputSelect	(	ACMP_TypeDef *	acmp,
		ACMP_ExternalInput_Typedef	aport
	)

Select and enable an external input.

This is used when an external module needs to take control of the ACMP POSSEL field in order to configure the APORT input for the ACMP. Modules like LESENSE use this to change the ACMP input during a scan sequence.

Parameters

[in]	acmp	Pointer to ACMP peripheral register block.
[in]	aport	This parameter decides which APORT(s) the ACMP will use when it's being controlled by an external module.

Definition at line 250 of file em_acmp.c.

References _ACMP_EXTIFCTRL_APORTSEL_SHIFT, ACMP_EXTIFCTRL_EN, ACMP_STATUS_EXTIFACT, ACMP_TypeDef::EXTIFCTRL, and ACMP_TypeDef::STATUS.

void ACMP_GPIOSetup	(	ACMP_TypeDef *	acmp,
		uint32_t	location,
		bool	enable,
		bool	invert
	)

Sets up GPIO output from the ACMP.

Note

GPIO must be enabled in the CMU before this function call, i.e.

CMU_ClockEnable(cmuClock_GPIO, true); 

Parameters

[in]	acmp	Pointer to the ACMP peripheral register block.
	location	The pin location to use. See the datasheet for location to pin mappings.
	enable	Enable or disable pin output.
	invert	Invert output.

Definition at line 305 of file em_acmp.c.

References _ACMP_CTRL_GPIOINV_MASK, _ACMP_CTRL_GPIOINV_SHIFT, _ACMP_ROUTELOC0_OUTLOC_SHIFT, ACMP_ROUTEPEN_OUTPEN, BUS_RegMaskedWrite(), ACMP_TypeDef::CTRL, ACMP_TypeDef::ROUTELOC0, and ACMP_TypeDef::ROUTEPEN.

Referenced by CAPLESENSE_setupACMP().

void ACMP_Init	(	ACMP_TypeDef *	acmp,
		const ACMP_Init_TypeDef *	init
	)

Initialize ACMP.

Parameters

[in]	acmp	Pointer to the ACMP peripheral register block.
[in]	init	Pointer to initialization structure used to configure ACMP for capacative sensing operation.

Definition at line 374 of file em_acmp.c.

References _ACMP_CTRL_ACCURACY_MASK, _ACMP_CTRL_ACCURACY_SHIFT, _ACMP_CTRL_BIASPROG_MASK, _ACMP_CTRL_BIASPROG_SHIFT, _ACMP_CTRL_EN_SHIFT, _ACMP_CTRL_FULLBIAS_SHIFT, _ACMP_CTRL_IFALL_SHIFT, _ACMP_CTRL_INACTVAL_SHIFT, _ACMP_CTRL_INPUTRANGE_SHIFT, _ACMP_CTRL_IRISE_SHIFT, _ACMP_CTRL_PWRSEL_MASK, _ACMP_CTRL_PWRSEL_SHIFT, _ACMP_INPUTSEL_VLPSEL_MASK, _ACMP_INPUTSEL_VLPSEL_SHIFT, ACMP_Init_TypeDef::accuracy, ACMP_Init_TypeDef::biasProg, BUS_RegBitWrite(), ACMP_TypeDef::CTRL, ACMP_Init_TypeDef::enable, ACMP_Init_TypeDef::fullBias, ACMP_Init_TypeDef::inactiveValue, ACMP_Init_TypeDef::inputRange, ACMP_TypeDef::INPUTSEL, ACMP_Init_TypeDef::interruptOnFallingEdge, ACMP_Init_TypeDef::interruptOnRisingEdge, ACMP_Init_TypeDef::powerSource, and ACMP_Init_TypeDef::vlpInput.

__STATIC_INLINE void ACMP_IntClear	(	ACMP_TypeDef *	acmp,
		uint32_t	flags
	)

Clear one or more pending ACMP interrupts.

Parameters

[in]	acmp	Pointer to ACMP peripheral register block.
[in]	flags	Pending ACMP interrupt source to clear. Use a bitwise logic OR combination of valid interrupt flags for the ACMP module. The flags can be for instance ACMP_IFC_EDGE or ACMP_IFC_WARMUP.

Definition at line 881 of file em_acmp.h.

References ACMP_TypeDef::IFC.

__STATIC_INLINE void ACMP_IntDisable	(	ACMP_TypeDef *	acmp,
		uint32_t	flags
	)

Disable one or more ACMP interrupts.

Parameters

[in]	acmp	Pointer to ACMP peripheral register block.
[in]	flags	ACMP interrupt sources to disable. Use a bitwise logic OR combination of valid interrupt flags for the ACMP module. The flags can be for instance ACMP_IEN_EDGE or ACMP_IEN_WARMUP.

Definition at line 899 of file em_acmp.h.

References ACMP_TypeDef::IEN.

__STATIC_INLINE void ACMP_IntEnable	(	ACMP_TypeDef *	acmp,
		uint32_t	flags
	)

Enable one or more ACMP interrupts.

Note

Depending on the use, a pending interrupt may already be set prior to enabling the interrupt. Consider using ACMP_IntClear() prior to enabling if such a pending interrupt should be ignored.

Parameters

[in]	acmp	Pointer to ACMP peripheral register block.
[in]	flags	ACMP interrupt sources to enable. Use a bitwise logic OR combination of valid interrupt flags for the ACMP module. The flags can be for instance ACMP_IEN_EDGE or ACMP_IEN_WARMUP.

Definition at line 922 of file em_acmp.h.

References ACMP_TypeDef::IEN.

__STATIC_INLINE uint32_t ACMP_IntGet

(

ACMP_TypeDef *

acmp

)

Get pending ACMP interrupt flags.

Note

The event bits are not cleared by the use of this function.

Parameters

[in]

acmp

Pointer to ACMP peripheral register block.

Returns

ACMP interrupt sources pending. A bitwise logic OR combination of valid interrupt flags for the ACMP module. The pending interrupt sources can be for instance ACMP_IF_EDGE or ACMP_IF_WARMUP.

Definition at line 943 of file em_acmp.h.

References ACMP_TypeDef::IF.

__STATIC_INLINE uint32_t ACMP_IntGetEnabled

(

ACMP_TypeDef *

acmp

)

Get enabled and pending ACMP interrupt flags. Useful for handling more interrupt sources in the same interrupt handler.

Parameters

[in]

acmp

Pointer to ACMP peripheral register block.

Note

Interrupt flags are not cleared by the use of this function.

Returns

Pending and enabled ACMP interrupt sources. The return value is the bitwise AND combination of

• the OR combination of enabled interrupt sources in ACMPx_IEN_nnn register (ACMPx_IEN_nnn) and
• the OR combination of valid interrupt flags of the ACMP module (ACMPx_IF_nnn).

Definition at line 968 of file em_acmp.h.

References ACMP_TypeDef::IEN, and ACMP_TypeDef::IF.

__STATIC_INLINE void ACMP_IntSet	(	ACMP_TypeDef *	acmp,
		uint32_t	flags
	)

Set one or more pending ACMP interrupts from SW.

Parameters

[in]	acmp	Pointer to ACMP peripheral register block.
[in]	flags	ACMP interrupt sources to set to pending. Use a bitwise logic OR combination of valid interrupt flags for the ACMP module. The flags can be for instance ACMP_IFS_EDGE or ACMP_IFS_WARMUP.

Definition at line 993 of file em_acmp.h.

References ACMP_TypeDef::IFS.

void ACMP_Reset

(

ACMP_TypeDef *

acmp

)

Reset ACMP to same state as after a HW reset.

Note

The ROUTE register is NOT reset by this function, in order to allow for centralized setup of this feature.

Parameters

[in]

acmp

Pointer to the ACMP peripheral register block.

Definition at line 270 of file em_acmp.c.

References _ACMP_CTRL_RESETVALUE, _ACMP_HYSTERESIS0_RESETVALUE, _ACMP_HYSTERESIS1_RESETVALUE, _ACMP_IEN_RESETVALUE, _ACMP_IF_MASK, _ACMP_INPUTSEL_RESETVALUE, ACMP_TypeDef::CTRL, ACMP_TypeDef::HYSTERESIS0, ACMP_TypeDef::HYSTERESIS1, ACMP_TypeDef::IEN, ACMP_TypeDef::IFC, and ACMP_TypeDef::INPUTSEL.

void ACMP_VASetup	(	ACMP_TypeDef *	acmp,
		const ACMP_VAConfig_TypeDef *	vaconfig
	)

Setup the VA Source.

Parameters

[in]	acmp	Pointer to the ACMP peripheral register block.
[in]	vaconfig	Pointer to the structure used to configure the VA source. This structure contains the input source as well as the 2 divider values.

Definition at line 440 of file em_acmp.c.

References _ACMP_HYSTERESIS0_DIVVA_MASK, _ACMP_HYSTERESIS0_DIVVA_SHIFT, _ACMP_HYSTERESIS1_DIVVA_MASK, _ACMP_HYSTERESIS1_DIVVA_SHIFT, _ACMP_INPUTSEL_VASEL_MASK, _ACMP_INPUTSEL_VASEL_SHIFT, BUS_RegMaskedWrite(), ACMP_VAConfig_TypeDef::div0, ACMP_VAConfig_TypeDef::div1, ACMP_TypeDef::HYSTERESIS0, ACMP_TypeDef::HYSTERESIS1, ACMP_VAConfig_TypeDef::input, and ACMP_TypeDef::INPUTSEL.

void ACMP_VBSetup	(	ACMP_TypeDef *	acmp,
		const ACMP_VBConfig_TypeDef *	vbconfig
	)

Setup the VB Source.

Parameters

[in]	acmp	Pointer to the ACMP peripheral register block.
[in]	vbconfig	Pointer to the structure used to configure the VB source. This structure contains the input source as well as the 2 divider values.

Definition at line 466 of file em_acmp.c.

References _ACMP_HYSTERESIS0_DIVVB_MASK, _ACMP_HYSTERESIS0_DIVVB_SHIFT, _ACMP_HYSTERESIS1_DIVVB_MASK, _ACMP_HYSTERESIS1_DIVVB_SHIFT, _ACMP_INPUTSEL_VBSEL_MASK, _ACMP_INPUTSEL_VBSEL_SHIFT, BUS_RegMaskedWrite(), ACMP_VBConfig_TypeDef::div0, ACMP_VBConfig_TypeDef::div1, ACMP_TypeDef::HYSTERESIS0, ACMP_TypeDef::HYSTERESIS1, ACMP_VBConfig_TypeDef::input, and ACMP_TypeDef::INPUTSEL.