EFR32 Mighty Gecko 1 Software Documentation  efr32mg1-doc-5.1.2
Data Structures | Macros | Enumerations | Functions
ACMP
EMLIB

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,
  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_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_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. */ \
}
acmpHysteresisLevel8
Definition: em_acmp.h:135
acmpResistor5
Definition: em_acmp.h:106

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. */ \
}
acmpHysteresisLevel5
Definition: em_acmp.h:132
acmpInputRangeFull
Definition: em_acmp.h:176
acmpAccuracyLow
Definition: em_acmp.h:201
acmpPowerSourceAvdd
Definition: em_acmp.h:188

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_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]acmpPointer to ACMP peripheral register block.
[in]channelThe 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]acmpPointer to ACMP peripheral register block.
[in]initPointer 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]acmpPointer to the ACMP peripheral register block.
negSelChannel to use on the negative input to the ACMP.
posSelChannel 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]acmpPointer 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]acmpPointer 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_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]acmpPointer to the ACMP peripheral register block.
locationThe pin location to use. See the datasheet for location to pin mappings.
enableEnable or disable pin output.
invertInvert 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]acmpPointer to the ACMP peripheral register block.
[in]initPointer 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]acmpPointer to ACMP peripheral register block.
[in]flagsPending 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]acmpPointer to ACMP peripheral register block.
[in]flagsACMP 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]acmpPointer to ACMP peripheral register block.
[in]flagsACMP 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]acmpPointer 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]acmpPointer 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]acmpPointer to ACMP peripheral register block.
[in]flagsACMP 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]acmpPointer 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]acmpPointer to the ACMP peripheral register block.
[in]vaconfigPointer 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]acmpPointer to the ACMP peripheral register block.
[in]vbconfigPointer 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.