ACMP - Analog Comparator#

Analog Comparator peripheral API.

Introduction#

This module contains functions to control the Analog Comparator (ACMP) peripheral of Silicon Labs' 32-bit MCUs and SoCs.

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

Example#

This example shows how to use the em_acmp.h API for comparing an input pin to an internal 2.5 V reference voltage.

ACMP Base example:

{
  #define GPIO_ACMPOUT    PD1  // Pin location for ACMP OUT varies depending on the device.

  // Enable bus clocks.
  sl_clock_manager_enable_bus_clock(SL_BUS_CLOCK_ACMP0);
  sl_clock_manager_enable_bus_clock(SL_BUS_CLOCK_GPIO);

  // Initialize with default settings.
  sl_hal_acmp_init_t init = SL_HAL_ACMP_INIT_DEFAULT;

  sl_hal_acmp_init(ACMP0, &init);
  sl_hal_acmp_enable(ACMP0);

  // Now we select the two inputs to compare. Here we compare the SL_HAL_ACMP_INPUT_PD2
  // input to the internal 2.5V reference. When SL_HAL_ACMP_INPUT_PD2 is lower than
  // 2.5 V then the ACMP output is 0 and when SL_HAL_ACMP_INPUT_PD2 is higher than
  // 2.5 V then the ACMP output is 1.
  sl_hal_acmp_set_input(ACMP0, SL_HAL_ACMP_INPUT_VREFDIV2V5, SL_HAL_ACMP_INPUT_PD2);

  // Allocate CDEVEN0 to ACMP0 to be able to use the input.
  GPIO->CDBUSALLOC = GPIO_CDBUSALLOC_CDEVEN0_ACMP0;

  // To be able to probe the output we can send the ACMP output to a pin.
  sl_hal_acmp_setup_gpio_inversion(ACMP0, false);
  GPIO->ACMPROUTE[ACMP_NUM(ACMP0)].ACMPOUTROUTE = (GPIO_ACMPOUT->port << _GPIO_ACMP_ACMPOUTROUTE_PORT_SHIFT)
                                                | (GPIO_ACMPOUT->pin << _GPIO_ACMP_ACMPOUTROUTE_PIN_SHIFT);
  GPIO->ACMPROUTE[ACMP_NUM(ACMP0)].ROUTEEN = GPIO_ACMP_ROUTEEN_ACMPOUTPEN;
}

Modules#

sl_hal_acmp_init_t

Enumerations#

enum

sl_hal_acmp_hysteresis_t {

SL_HAL_ACMP_HYSTERESIS_DISABLED = _ACMP_CFG_HYST_DISABLED

SL_HAL_ACMP_HYSTERESIS_SYM_10MV = _ACMP_CFG_HYST_SYM10MV

SL_HAL_ACMP_HYSTERESIS_SYM_20MV = _ACMP_CFG_HYST_SYM20MV

SL_HAL_ACMP_HYSTERESIS_SYM_30MV = _ACMP_CFG_HYST_SYM30MV

SL_HAL_ACMP_HYSTERESIS_POS_10MV = _ACMP_CFG_HYST_POS10MV

SL_HAL_ACMP_HYSTERESIS_POS_20MV = _ACMP_CFG_HYST_POS20MV

SL_HAL_ACMP_HYSTERESIS_POS_30MV = _ACMP_CFG_HYST_POS30MV

SL_HAL_ACMP_HYSTERESIS_NEG_10MV = _ACMP_CFG_HYST_NEG10MV

SL_HAL_ACMP_HYSTERESIS_NEG_20MV = _ACMP_CFG_HYST_NEG20MV

SL_HAL_ACMP_HYSTERESIS_NEG_30MV = _ACMP_CFG_HYST_NEG30MV

}

Hysteresis level.

enum

sl_hal_acmp_input_range_t {

SL_HAL_ACMP_INPUT_RANGE_FULL = _ACMP_CFG_INPUTRANGE_FULL

SL_HAL_ACMP_INPUT_RANGE_REDUCED = _ACMP_CFG_INPUTRANGE_REDUCED

}

vcm/input range.

enum

sl_hal_acmp_accuracy_t {

SL_HAL_ACMP_ACCURACY_LOW = _ACMP_CFG_ACCURACY_LOW

SL_HAL_ACMP_ACCURACY_HIGH = _ACMP_CFG_ACCURACY_HIGH

}

Accuracy mode.

enum

sl_hal_acmp_input_t {

SL_HAL_ACMP_INPUT_VSS = _ACMP_INPUTCTRL_POSSEL_VSS

SL_HAL_ACMP_INPUT_VREFDIVAVDD = _ACMP_INPUTCTRL_POSSEL_VREFDIVAVDD

SL_HAL_ACMP_INPUT_VREFDIVAVDDLP = _ACMP_INPUTCTRL_POSSEL_VREFDIVAVDDLP

SL_HAL_ACMP_INPUT_VREFDIV1V25 = _ACMP_INPUTCTRL_POSSEL_VREFDIV1V25

SL_HAL_ACMP_INPUT_VREFDIV1V25LP = _ACMP_INPUTCTRL_POSSEL_VREFDIV1V25LP

SL_HAL_ACMP_INPUT_VREFDIV2V5 = _ACMP_INPUTCTRL_POSSEL_VREFDIV2V5

SL_HAL_ACMP_INPUT_VREFDIV2V5LP = _ACMP_INPUTCTRL_POSSEL_VREFDIV2V5LP

SL_HAL_ACMP_INPUT_VSENSE01DIV4 = _ACMP_INPUTCTRL_POSSEL_VSENSE01DIV4

SL_HAL_ACMP_INPUT_VSENSE01DIV4LP = _ACMP_INPUTCTRL_POSSEL_VSENSE01DIV4LP

SL_HAL_ACMP_INPUT_VSENSE11DIV4 = _ACMP_INPUTCTRL_POSSEL_VSENSE11DIV4

SL_HAL_ACMP_INPUT_VSENSE11DIV4LP = _ACMP_INPUTCTRL_POSSEL_VSENSE11DIV4LP

SL_HAL_ACMP_INPUT_VDAC0OUT1 = _ACMP_INPUTCTRL_POSSEL_VDAC0OUT1

SL_HAL_ACMP_INPUT_VDAC1OUT1 = _ACMP_INPUTCTRL_POSSEL_VDAC1OUT1

SL_HAL_ACMP_INPUT_EXTPA = _ACMP_INPUTCTRL_POSSEL_EXTPA

SL_HAL_ACMP_INPUT_EXTPB = _ACMP_INPUTCTRL_POSSEL_EXTPB

SL_HAL_ACMP_INPUT_EXTPC = _ACMP_INPUTCTRL_POSSEL_EXTPC

SL_HAL_ACMP_INPUT_EXTPD = _ACMP_INPUTCTRL_POSSEL_EXTPD

SL_HAL_ACMP_INPUT_PA0 = _ACMP_INPUTCTRL_POSSEL_PA0

SL_HAL_ACMP_INPUT_PA1 = _ACMP_INPUTCTRL_POSSEL_PA1

SL_HAL_ACMP_INPUT_PA2 = _ACMP_INPUTCTRL_POSSEL_PA2

SL_HAL_ACMP_INPUT_PA3 = _ACMP_INPUTCTRL_POSSEL_PA3

SL_HAL_ACMP_INPUT_PA4 = _ACMP_INPUTCTRL_POSSEL_PA4

SL_HAL_ACMP_INPUT_PA5 = _ACMP_INPUTCTRL_POSSEL_PA5

SL_HAL_ACMP_INPUT_PA6 = _ACMP_INPUTCTRL_POSSEL_PA6

SL_HAL_ACMP_INPUT_PA7 = _ACMP_INPUTCTRL_POSSEL_PA7

SL_HAL_ACMP_INPUT_PA8 = _ACMP_INPUTCTRL_POSSEL_PA8

SL_HAL_ACMP_INPUT_PA9 = _ACMP_INPUTCTRL_POSSEL_PA9

SL_HAL_ACMP_INPUT_PA10 = _ACMP_INPUTCTRL_POSSEL_PA10

SL_HAL_ACMP_INPUT_PA11 = _ACMP_INPUTCTRL_POSSEL_PA11

SL_HAL_ACMP_INPUT_PA12 = _ACMP_INPUTCTRL_POSSEL_PA12

SL_HAL_ACMP_INPUT_PA13 = _ACMP_INPUTCTRL_POSSEL_PA13

SL_HAL_ACMP_INPUT_PA14 = _ACMP_INPUTCTRL_POSSEL_PA14

SL_HAL_ACMP_INPUT_PA15 = _ACMP_INPUTCTRL_POSSEL_PA15

SL_HAL_ACMP_INPUT_PB0 = _ACMP_INPUTCTRL_POSSEL_PB0

SL_HAL_ACMP_INPUT_PB1 = _ACMP_INPUTCTRL_POSSEL_PB1

SL_HAL_ACMP_INPUT_PB2 = _ACMP_INPUTCTRL_POSSEL_PB2

SL_HAL_ACMP_INPUT_PB3 = _ACMP_INPUTCTRL_POSSEL_PB3

SL_HAL_ACMP_INPUT_PB4 = _ACMP_INPUTCTRL_POSSEL_PB4

SL_HAL_ACMP_INPUT_PB5 = _ACMP_INPUTCTRL_POSSEL_PB5

SL_HAL_ACMP_INPUT_PB6 = _ACMP_INPUTCTRL_POSSEL_PB6

SL_HAL_ACMP_INPUT_PB7 = _ACMP_INPUTCTRL_POSSEL_PB7

SL_HAL_ACMP_INPUT_PB8 = _ACMP_INPUTCTRL_POSSEL_PB8

SL_HAL_ACMP_INPUT_PB9 = _ACMP_INPUTCTRL_POSSEL_PB9

SL_HAL_ACMP_INPUT_PB10 = _ACMP_INPUTCTRL_POSSEL_PB10

SL_HAL_ACMP_INPUT_PB11 = _ACMP_INPUTCTRL_POSSEL_PB11

SL_HAL_ACMP_INPUT_PB12 = _ACMP_INPUTCTRL_POSSEL_PB12

SL_HAL_ACMP_INPUT_PB13 = _ACMP_INPUTCTRL_POSSEL_PB13

SL_HAL_ACMP_INPUT_PB14 = _ACMP_INPUTCTRL_POSSEL_PB14

SL_HAL_ACMP_INPUT_PB15 = _ACMP_INPUTCTRL_POSSEL_PB15

SL_HAL_ACMP_INPUT_PC0 = _ACMP_INPUTCTRL_POSSEL_PC0

SL_HAL_ACMP_INPUT_PC1 = _ACMP_INPUTCTRL_POSSEL_PC1

SL_HAL_ACMP_INPUT_PC2 = _ACMP_INPUTCTRL_POSSEL_PC2

SL_HAL_ACMP_INPUT_PC3 = _ACMP_INPUTCTRL_POSSEL_PC3

SL_HAL_ACMP_INPUT_PC4 = _ACMP_INPUTCTRL_POSSEL_PC4

SL_HAL_ACMP_INPUT_PC5 = _ACMP_INPUTCTRL_POSSEL_PC5

SL_HAL_ACMP_INPUT_PC6 = _ACMP_INPUTCTRL_POSSEL_PC6

SL_HAL_ACMP_INPUT_PC7 = _ACMP_INPUTCTRL_POSSEL_PC7

SL_HAL_ACMP_INPUT_PC8 = _ACMP_INPUTCTRL_POSSEL_PC8

SL_HAL_ACMP_INPUT_PC9 = _ACMP_INPUTCTRL_POSSEL_PC9

SL_HAL_ACMP_INPUT_PC10 = _ACMP_INPUTCTRL_POSSEL_PC10

SL_HAL_ACMP_INPUT_PC11 = _ACMP_INPUTCTRL_POSSEL_PC11

SL_HAL_ACMP_INPUT_PC12 = _ACMP_INPUTCTRL_POSSEL_PC12

SL_HAL_ACMP_INPUT_PC13 = _ACMP_INPUTCTRL_POSSEL_PC13

SL_HAL_ACMP_INPUT_PC14 = _ACMP_INPUTCTRL_POSSEL_PC14

SL_HAL_ACMP_INPUT_PC15 = _ACMP_INPUTCTRL_POSSEL_PC15

SL_HAL_ACMP_INPUT_PD0 = _ACMP_INPUTCTRL_POSSEL_PD0

SL_HAL_ACMP_INPUT_PD1 = _ACMP_INPUTCTRL_POSSEL_PD1

SL_HAL_ACMP_INPUT_PD2 = _ACMP_INPUTCTRL_POSSEL_PD2

SL_HAL_ACMP_INPUT_PD3 = _ACMP_INPUTCTRL_POSSEL_PD3

SL_HAL_ACMP_INPUT_PD4 = _ACMP_INPUTCTRL_POSSEL_PD4

SL_HAL_ACMP_INPUT_PD5 = _ACMP_INPUTCTRL_POSSEL_PD5

SL_HAL_ACMP_INPUT_PD6 = _ACMP_INPUTCTRL_POSSEL_PD6

SL_HAL_ACMP_INPUT_PD7 = _ACMP_INPUTCTRL_POSSEL_PD7

SL_HAL_ACMP_INPUT_PD8 = _ACMP_INPUTCTRL_POSSEL_PD8

SL_HAL_ACMP_INPUT_PD9 = _ACMP_INPUTCTRL_POSSEL_PD9

SL_HAL_ACMP_INPUT_PD10 = _ACMP_INPUTCTRL_POSSEL_PD10

SL_HAL_ACMP_INPUT_PD11 = _ACMP_INPUTCTRL_POSSEL_PD11

SL_HAL_ACMP_INPUT_PD12 = _ACMP_INPUTCTRL_POSSEL_PD12

SL_HAL_ACMP_INPUT_PD13 = _ACMP_INPUTCTRL_POSSEL_PD13

SL_HAL_ACMP_INPUT_PD14 = _ACMP_INPUTCTRL_POSSEL_PD14

SL_HAL_ACMP_INPUT_PD15 = _ACMP_INPUTCTRL_POSSEL_PD15

}

Input Selection.

Functions#

void

sl_hal_acmp_init(ACMP_TypeDef *acmp, const sl_hal_acmp_init_t *init)

Initialize ACMP.

void

sl_hal_acmp_reset(ACMP_TypeDef *acmp)

Reset ACMP to the state it is after a hardware reset.

void

sl_hal_acmp_setup_gpio_inversion(ACMP_TypeDef *acmp, bool invert)

Set up GPIO output inversion from the ACMP.

void

sl_hal_acmp_set_input(ACMP_TypeDef *acmp, sl_hal_acmp_input_t negative_input, sl_hal_acmp_input_t positive_input)

Set which channels are used in ACMP comparisons.

void

sl_hal_acmp_enable(ACMP_TypeDef *acmp)

Enable ACMP.

void

sl_hal_acmp_disable(ACMP_TypeDef *acmp)

Disable ACMP.

void

sl_hal_acmp_clear_interrupts(ACMP_TypeDef *acmp, uint32_t flags)

Clear one or more pending ACMP interrupts.

void

sl_hal_acmp_disable_interrupts(ACMP_TypeDef *acmp, uint32_t flags)

Disable one or more ACMP interrupts.

void

sl_hal_acmp_enable_interrupts(ACMP_TypeDef *acmp, uint32_t flags)

Enable one or more ACMP interrupts.

uint32_t

sl_hal_acmp_get_pending_interrupts(ACMP_TypeDef *acmp)

Get pending ACMP interrupt flags.

uint32_t

sl_hal_acmp_get_enabled_pending_interrupts(ACMP_TypeDef *acmp)

Get enabled and pending ACMP interrupt flags.

uint32_t

sl_hal_acmp_get_enabled_interrupts(ACMP_TypeDef *acmp)

Get enabled ACMP interrupts.

void

sl_hal_acmp_set_interrupts(ACMP_TypeDef *acmp, uint32_t flags)

Set one or more pending ACMP interrupts from software.

sl_hal_acmp_input_t

sl_hal_acmp_gpio_to_input(uint32_t port, uint32_t pin)

Convert GPIO port/pin to ACMP input selection.

void

sl_hal_acmp_wait_sync(ACMP_TypeDef *acmp)

Wait for ongoing sync of register(s) to the low-frequency domain to complete.

void

sl_hal_acmp_wait_ready(ACMP_TypeDef *acmp)

Wait for disabling to finish.

uint32_t

sl_hal_acmp_get_status(ACMP_TypeDef *acmp)

Return the content of the status register.

Macros#

#define

SL_HAL_ACMP_REF_VALID (ref)

Validation of ACMP register block pointer reference for assert statements.

#define

PM5507_ACMP_CFG_BIAS_DEFAULT 0x00000004UL

Analog comparator CFG with initial bias value.

#define

PM5507_ACMP_CFG_RESETVALUE 0x00000004UL

Analog comparator reset value.

#define

SL_HAL_ACMP_INIT_DEFAULT undefined

Default configuration for ACMP regular initialization.

Enumeration Documentation#

sl_hal_acmp_hysteresis_t#

sl_hal_acmp_hysteresis_t

Hysteresis level.

Enumerator
SL_HAL_ACMP_HYSTERESIS_DISABLED	Mode DISABLED for ACMP_CFG.
SL_HAL_ACMP_HYSTERESIS_SYM_10MV	Mode HYST10SYM for ACMP_CFG.
SL_HAL_ACMP_HYSTERESIS_SYM_20MV	Mode HYST20SYM for ACMP_CFG.
SL_HAL_ACMP_HYSTERESIS_SYM_30MV	Mode HYST30SYM for ACMP_CFG.
SL_HAL_ACMP_HYSTERESIS_POS_10MV	Mode HYST10POS for ACMP_CFG.
SL_HAL_ACMP_HYSTERESIS_POS_20MV	Mode HYST20POS for ACMP_CFG.
SL_HAL_ACMP_HYSTERESIS_POS_30MV	Mode HYST30POS for ACMP_CFG.
SL_HAL_ACMP_HYSTERESIS_NEG_10MV	Mode HYST10NEG for ACMP_CFG.
SL_HAL_ACMP_HYSTERESIS_NEG_20MV	Mode HYST20NEG for ACMP_CFG.
SL_HAL_ACMP_HYSTERESIS_NEG_30MV	Mode HYST30NEG for ACMP_CFG.

sl_hal_acmp_input_range_t#

sl_hal_acmp_input_range_t

vcm/input range.

Enumerator
SL_HAL_ACMP_INPUT_RANGE_FULL	Input can be from 0 to VDD.
SL_HAL_ACMP_INPUT_RANGE_REDUCED	Input can be from 0 to VDD-0.7 V.

sl_hal_acmp_accuracy_t#

sl_hal_acmp_accuracy_t

Accuracy mode.

Enumerator
SL_HAL_ACMP_ACCURACY_LOW	Low-accuracy mode which consumes less current.
SL_HAL_ACMP_ACCURACY_HIGH	High-accuracy mode which consumes more current.

sl_hal_acmp_input_t#

sl_hal_acmp_input_t

Input Selection.

Enumerator
SL_HAL_ACMP_INPUT_VSS	Select VSS.
SL_HAL_ACMP_INPUT_VREFDIVAVDD	Select Divided AVDD.
SL_HAL_ACMP_INPUT_VREFDIVAVDDLP	Select Low-Power Divided AVDD.
SL_HAL_ACMP_INPUT_VREFDIV1V25	Select Divided 1V25 reference.
SL_HAL_ACMP_INPUT_VREFDIV1V25LP	Select Low-power Divided 1V25 reference.
SL_HAL_ACMP_INPUT_VREFDIV2V5	Select Divided 2V5 reference.
SL_HAL_ACMP_INPUT_VREFDIV2V5LP	Select Low-power Divided 2V5 reference.
SL_HAL_ACMP_INPUT_VSENSE01DIV4	Select VSENSE0 divided by 4.
SL_HAL_ACMP_INPUT_VSENSE01DIV4LP	Select Low-power VSENSE0 divided by 4.
SL_HAL_ACMP_INPUT_VSENSE11DIV4	Select VSENSE1 divided by 4.
SL_HAL_ACMP_INPUT_VSENSE11DIV4LP	Select Low-power VSENSE1 divided by 4.
SL_HAL_ACMP_INPUT_VDAC0OUT1	Select VDAC0 channel 1 output.
SL_HAL_ACMP_INPUT_VDAC1OUT1	Select VDAC1 channel 1 output.
SL_HAL_ACMP_INPUT_EXTPA	Select external interface, base is PA0.
SL_HAL_ACMP_INPUT_EXTPB	Select external interface, base is PB0.
SL_HAL_ACMP_INPUT_EXTPC	Select external interface, base is PC0.
SL_HAL_ACMP_INPUT_EXTPD	Select external interface, base is PD0.
SL_HAL_ACMP_INPUT_PA0	Select Port A Pin0.
SL_HAL_ACMP_INPUT_PA1	Select Port A Pin1.
SL_HAL_ACMP_INPUT_PA2	Select Port A Pin2.
SL_HAL_ACMP_INPUT_PA3	Select Port A Pin3.
SL_HAL_ACMP_INPUT_PA4	Select Port A Pin4.
SL_HAL_ACMP_INPUT_PA5	Select Port A Pin5.
SL_HAL_ACMP_INPUT_PA6	Select Port A Pin6.
SL_HAL_ACMP_INPUT_PA7	Select Port A Pin7.
SL_HAL_ACMP_INPUT_PA8	Select Port A Pin8.
SL_HAL_ACMP_INPUT_PA9	Select Port A Pin9.
SL_HAL_ACMP_INPUT_PA10	Select Port A Pin10.
SL_HAL_ACMP_INPUT_PA11	Select Port A Pin11.
SL_HAL_ACMP_INPUT_PA12	Select Port A Pin12.
SL_HAL_ACMP_INPUT_PA13	Select Port A Pin13.
SL_HAL_ACMP_INPUT_PA14	Select Port A Pin14.
SL_HAL_ACMP_INPUT_PA15	Select Port A Pin15.
SL_HAL_ACMP_INPUT_PB0	Select Port B Pin0.
SL_HAL_ACMP_INPUT_PB1	Select Port B Pin1.
SL_HAL_ACMP_INPUT_PB2	Select Port B Pin2.
SL_HAL_ACMP_INPUT_PB3	Select Port B Pin3.
SL_HAL_ACMP_INPUT_PB4	Select Port B Pin4.
SL_HAL_ACMP_INPUT_PB5	Select Port B Pin5.
SL_HAL_ACMP_INPUT_PB6	Select Port B Pin6.
SL_HAL_ACMP_INPUT_PB7	Select Port B Pin7.
SL_HAL_ACMP_INPUT_PB8	Select Port B Pin8.
SL_HAL_ACMP_INPUT_PB9	Select Port B Pin9.
SL_HAL_ACMP_INPUT_PB10	Select Port B Pin10.
SL_HAL_ACMP_INPUT_PB11	Select Port B Pin11.
SL_HAL_ACMP_INPUT_PB12	Select Port B Pin12.
SL_HAL_ACMP_INPUT_PB13	Select Port B Pin13.
SL_HAL_ACMP_INPUT_PB14	Select Port B Pin14.
SL_HAL_ACMP_INPUT_PB15	Select Port B Pin15.
SL_HAL_ACMP_INPUT_PC0	Select Port C Pin0.
SL_HAL_ACMP_INPUT_PC1	Select Port C Pin1.
SL_HAL_ACMP_INPUT_PC2	Select Port C Pin2.
SL_HAL_ACMP_INPUT_PC3	Select Port C Pin3.
SL_HAL_ACMP_INPUT_PC4	Select Port C Pin4.
SL_HAL_ACMP_INPUT_PC5	Select Port C Pin5.
SL_HAL_ACMP_INPUT_PC6	Select Port C Pin6.
SL_HAL_ACMP_INPUT_PC7	Select Port C Pin7.
SL_HAL_ACMP_INPUT_PC8	Select Port C Pin8.
SL_HAL_ACMP_INPUT_PC9	Select Port C Pin9.
SL_HAL_ACMP_INPUT_PC10	Select Port C Pin10.
SL_HAL_ACMP_INPUT_PC11	Select Port C Pin11.
SL_HAL_ACMP_INPUT_PC12	Select Port C Pin12.
SL_HAL_ACMP_INPUT_PC13	Select Port C Pin13.
SL_HAL_ACMP_INPUT_PC14	Select Port C Pin14.
SL_HAL_ACMP_INPUT_PC15	Select Port C Pin15.
SL_HAL_ACMP_INPUT_PD0	Select Port D Pin0.
SL_HAL_ACMP_INPUT_PD1	Select Port D Pin1.
SL_HAL_ACMP_INPUT_PD2	Select Port D Pin2.
SL_HAL_ACMP_INPUT_PD3	Select Port D Pin3.
SL_HAL_ACMP_INPUT_PD4	Select Port D Pin4.
SL_HAL_ACMP_INPUT_PD5	Select Port D Pin5.
SL_HAL_ACMP_INPUT_PD6	Select Port D Pin6.
SL_HAL_ACMP_INPUT_PD7	Select Port D Pin7.
SL_HAL_ACMP_INPUT_PD8	Select Port D Pin8.
SL_HAL_ACMP_INPUT_PD9	Select Port D Pin9.
SL_HAL_ACMP_INPUT_PD10	Select Port D Pin10.
SL_HAL_ACMP_INPUT_PD11	Select Port D Pin11.
SL_HAL_ACMP_INPUT_PD12	Select Port D Pin12.
SL_HAL_ACMP_INPUT_PD13	Select Port D Pin13.
SL_HAL_ACMP_INPUT_PD14	Select Port D Pin14.
SL_HAL_ACMP_INPUT_PD15	Select Port D Pin15.

Function Documentation#

sl_hal_acmp_init#

void sl_hal_acmp_init (ACMP_TypeDef * acmp, const sl_hal_acmp_init_t * init)

Initialize ACMP.

Parameters

Type	Direction	Argument Name	Description
ACMP_TypeDef *	[in]	acmp	A pointer to the ACMP peripheral register block.
const sl_hal_acmp_init_t *	[in]	init	A pointer to the initialization structure used to configure ACMP.

Note

A call to ACMP_Init can cause side effects since it can enable/disable the peripheral.

sl_hal_acmp_reset#

void sl_hal_acmp_reset (ACMP_TypeDef * acmp)

Reset ACMP to the state it is after a hardware reset.

Parameters

Type	Direction	Argument Name	Description
ACMP_TypeDef *	[in]	acmp	A pointer to the ACMP peripheral register block.

Note

The GPIO ACMP ROUTE register is NOT reset by this function to allow for centralized setup of this feature.
The peripheral may be enabled and disabled during reset.

sl_hal_acmp_setup_gpio_inversion#

void sl_hal_acmp_setup_gpio_inversion (ACMP_TypeDef * acmp, bool invert)

Set up GPIO output inversion from the ACMP.

Parameters

Type	Direction	Argument Name	Description
ACMP_TypeDef *	[in]	acmp	Pointer to the ACMP peripheral register block.
bool	[in]	invert	true = GPIO output is inverted. false = GPIO output is not inverted.

sl_hal_acmp_set_input#

void sl_hal_acmp_set_input (ACMP_TypeDef * acmp, sl_hal_acmp_input_t negative_input, sl_hal_acmp_input_t positive_input)

Set which channels are used in ACMP comparisons.

Parameters

Type	Direction	Argument Name	Description
ACMP_TypeDef *	[in]	acmp	A pointer to the ACMP peripheral register block.
sl_hal_acmp_input_t	[in]	negative_input	ACMP channel for the negative input.
sl_hal_acmp_input_t	[in]	positive_input	ACMP channel for the positive input.

Note

Can only be called when the peripheral is enabled.
If GPIO is used for both posSel and negSel, they cannot both use even or odd pins.

sl_hal_acmp_enable#

void sl_hal_acmp_enable (ACMP_TypeDef * acmp)

Enable ACMP.

Parameters

Type	Direction	Argument Name	Description
ACMP_TypeDef *	[in]	acmp	A pointer to the ACMP peripheral register block.

sl_hal_acmp_disable#

void sl_hal_acmp_disable (ACMP_TypeDef * acmp)

Disable ACMP.

Parameters

Type	Direction	Argument Name	Description
ACMP_TypeDef *	[in]	acmp	A pointer to the ACMP peripheral register block.

sl_hal_acmp_clear_interrupts#

void sl_hal_acmp_clear_interrupts (ACMP_TypeDef * acmp, uint32_t flags)

Clear one or more pending ACMP interrupts.

Parameters

Type	Direction	Argument Name	Description
ACMP_TypeDef *	[in]	acmp	A pointer to the ACMP peripheral register block.
uint32_t	[in]	flags	Pending ACMP interrupt source to clear. Use one or more valid interrupt flags for the ACMP module (ACMP_IF_nnn) OR'ed together.

sl_hal_acmp_disable_interrupts#

void sl_hal_acmp_disable_interrupts (ACMP_TypeDef * acmp, uint32_t flags)

Disable one or more ACMP interrupts.

Parameters

Type	Direction	Argument Name	Description
ACMP_TypeDef *	[in]	acmp	A pointer to the ACMP peripheral register block.
uint32_t	[in]	flags	ACMP interrupt sources to disable. Use one or more valid interrupt flags for the ACMP module (ACMP_IF_nnn) OR'ed together.

sl_hal_acmp_enable_interrupts#

void sl_hal_acmp_enable_interrupts (ACMP_TypeDef * acmp, uint32_t flags)

Enable one or more ACMP interrupts.

Parameters

Type	Direction	Argument Name	Description
ACMP_TypeDef *	[in]	acmp	A pointer to the ACMP peripheral register block.
uint32_t	[in]	flags	ACMP interrupt sources to enable. Use one or more valid interrupt flags for the ACMP module (ACMP_IF_nnn) OR'ed together.

Note

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

sl_hal_acmp_get_pending_interrupts#

uint32_t sl_hal_acmp_get_pending_interrupts (ACMP_TypeDef * acmp)

Get pending ACMP interrupt flags.

Parameters

Type	Direction	Argument Name	Description
ACMP_TypeDef *	[in]	acmp	A pointer to the ACMP peripheral register block.

Note

This function does not clear event bits.

Returns

Pending ACMP interrupt sources. Use one or more valid interrupt flags for the ACMP module (ACMP_IF_nnn) OR'ed together.

sl_hal_acmp_get_enabled_pending_interrupts#

uint32_t sl_hal_acmp_get_enabled_pending_interrupts (ACMP_TypeDef * acmp)

Get enabled and pending ACMP interrupt flags.

Parameters

Type	Direction	Argument Name	Description
ACMP_TypeDef *	[in]	acmp	A pointer to the ACMP peripheral register block.

Useful for handling more interrupt sources in the same interrupt handler.

Note

This function does not clear interrupt flags.

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).

sl_hal_acmp_get_enabled_interrupts#

uint32_t sl_hal_acmp_get_enabled_interrupts (ACMP_TypeDef * acmp)

Get enabled ACMP interrupts.

Parameters

Type	Direction	Argument Name	Description
ACMP_TypeDef *	[in]	acmp	A pointer to the ACMP peripheral register block.

Useful for handling more interrupt sources in the same interrupt handler.

Returns

Enabled ACMP interrupt sources.

sl_hal_acmp_set_interrupts#

void sl_hal_acmp_set_interrupts (ACMP_TypeDef * acmp, uint32_t flags)

Set one or more pending ACMP interrupts from software.

Parameters

Type	Direction	Argument Name	Description
ACMP_TypeDef *	[in]	acmp	A pointer to the ACMP peripheral register block.
uint32_t	[in]	flags	ACMP interrupt sources to set as 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.

sl_hal_acmp_gpio_to_input#

sl_hal_acmp_input_t sl_hal_acmp_gpio_to_input (uint32_t port, uint32_t pin)

Convert GPIO port/pin to ACMP input selection.

Parameters

Type	Direction	Argument Name	Description
uint32_t	[in]	port	GPIO port to convert.
uint32_t	[in]	pin	GPIO pin to convert.

Returns

ACMP input selection of the selected GPIO port and pin.

sl_hal_acmp_wait_sync#

void sl_hal_acmp_wait_sync (ACMP_TypeDef * acmp)

Wait for ongoing sync of register(s) to the low-frequency domain to complete.

Parameters

Type	Direction	Argument Name	Description
ACMP_TypeDef *	[in]	acmp	A pointer to the ACMP peripheral register block.

sl_hal_acmp_wait_ready#

void sl_hal_acmp_wait_ready (ACMP_TypeDef * acmp)

Wait for disabling to finish.

Parameters

Type	Direction	Argument Name	Description
ACMP_TypeDef *	[in]	acmp	A pointer to the ACMP peripheral register block.

sl_hal_acmp_get_status#

uint32_t sl_hal_acmp_get_status (ACMP_TypeDef * acmp)

Return the content of the status register.

Parameters

Type	Direction	Argument Name	Description
ACMP_TypeDef *	[in]	acmp	A pointer to the ACMP peripheral register block.

Returns

Status register.