IADC - Incremental ADC#

Incremental Analog to Digital Converter (IADC) Peripheral API.

This module contains functions to control the IADC peripheral of Silicon Labs 32-bit MCUs and SoCs. The IADC is used to convert analog signals into a digital representation.

Introduction#

The IADC provides high-accuracy analog-to-digital conversion with incremental/sigma-delta operation for improved resolution. It's designed for precision measurements and offers various operating modes.

Example#

IADC Basic example:

{
  // Initialize IADC
  sl_hal_iadc_init_t init = {
    .iadc_clk_suspend0 = false,
    .iadc_clk_suspend1 = false,
    .debug_halt = false,
    .warmup = SL_HAL_IADC_WARMUP_NORMAL,
    .timebase = 0,              // Will be calculated automatically
    .src_clk_prescale = 0,
    .timer_cycles = 1000        // Timer period in ADC_CLK cycles
  };

  // IADC scan configuration
  sl_hal_iadc_init_scan_t scan_init = {
    .alignment = SL_HAL_IADC_ALIGNMENT_RIGHT_12,
    .show_id = true,
    .data_valid_level = SL_HAL_IADC_DATA_VALID_1,
    .fifo_dma_wakeup = false,
    .trigger_select = SL_HAL_IADC_TRIGGER_IMMEDIATE,
    .trigger_action = SL_HAL_IADC_TRIGGER_ACTION_ONCE
  };

  // IADC default configuration
  sl_hal_iadc_config_t iadc_config = {
    .adc_mode = SL_HAL_IADC_CFG_ADC_MODE_NORMAL,
    .osr_high_speed = SL_HAL_IADC_OSR_HIGH_SPEED_16X,
    .analog_gain = SL_HAL_IADC_ANALOG_GAIN_1,
    .reference = SL_HAL_IADC_REFERENCE_VREFINT_1V2,
    .twos_complement = SL_HAL_IADC_TWOS_COMP_AUTO,
    .adc_clk_prescale = 0,
    .vref = SL_HAL_IADC_DEFAULT_VREF
  };

  // Assign config to the init structure
  init.configs[0] = iadc_config;

  // Configure scan table entry
  sl_hal_iadc_scan_table_entry_t entry = {
    .negative_port = SL_HAL_IADC_NEG_PORT_INPUT_GND,
    .negative_pin = 0,
    .positive_port = SL_HAL_IADC_POS_PORT_INPUT_PORT_A,
    .positive_pin = 0,
    .config_id = 0,
    .compare = false,
    .include_in_scan = true
  };

  // Set the scan table entry
  sl_hal_iadc_scan_table_t scan_table = SL_HAL_IADC_SCANTABLE_DEFAULT;
  scan_table.entries[0] = entry;

  // Initialize hardware
  sl_hal_iadc_init(IADC0, &init);
  sl_hal_iadc_init_scan(IADC0, &scan_init);
  sl_hal_iadc_set_scan_table(IADC0, &scan_table);

  // Enable IADC
  sl_hal_iadc_enable(IADC0);

  // Start conversion
  sl_hal_iadc_cmd(IADC0, SL_HAL_IADC_CMD_START_SCAN);

  // Wait for conversion to complete
  while ((IADC0->STATUS & IADC_STATUS_SCANFIFODV) == 0) {
    // Wait for data valid flag
  }

  // Read result
  sl_hal_iadc_result_t result = sl_hal_iadc_scan_read_fifo(IADC0);

  // Use result.data and result.id here
}

Modules#

sl_hal_iadc_scan_table_entry_t

sl_hal_iadc_config_t

sl_hal_iadc_scan_table_t

sl_hal_iadc_init_t

sl_hal_iadc_init_scan_t

sl_hal_iadc_init_single_t

sl_hal_iadc_single_input_t

sl_hal_iadc_result_t

Enumerations#

enum

sl_hal_iadc_warmup_t {

SL_HAL_IADC_WARMUP_NORMAL = _IADC_CTRL_WARMUPMODE_NORMAL

SL_HAL_IADC_WARMUP_KEEP_IN_STANDBY = _IADC_CTRL_WARMUPMODE_KEEPINSTANDBY

SL_HAL_IADC_WARMUP_KEEP_WARM = _IADC_CTRL_WARMUPMODE_KEEPWARM

}

Warm-up mode.

enum

sl_hal_iadc_alignment_t {

SL_HAL_IADC_ALIGNMENT_RIGHT_12 = _IADC_SCANFIFOCFG_ALIGNMENT_RIGHT12

SL_HAL_IADC_ALIGNMENT_LEFT_12 = _IADC_SCANFIFOCFG_ALIGNMENT_LEFT12

SL_HAL_IADC_ALIGNMENT_RIGHT_16 = _IADC_SCANFIFOCFG_ALIGNMENT_RIGHT16

SL_HAL_IADC_ALIGNMENT_LEFT_16 = _IADC_SCANFIFOCFG_ALIGNMENT_LEFT16

SL_HAL_IADC_ALIGNMENT_RIGHT_20 = _IADC_SCANFIFOCFG_ALIGNMENT_RIGHT20

SL_HAL_IADC_ALIGNMENT_LEFT_20 = _IADC_SCANFIFOCFG_ALIGNMENT_LEFT20

}

IADC result alignment.

enum

sl_hal_iadc_voltage_reference_t {

SL_HAL_IADC_REFERENCE_VREFINT_1V2 = _IADC_CFG_REFSEL_VBGR

SL_HAL_IADC_VREF_EXT_1V25 = _IADC_CFG_REFSEL_VREF

SL_HAL_IADC_VREF_EXT_2V5 = _IADC_CFG_REFSEL_VREF2P5

SL_HAL_IADC_VREF_VDDX = _IADC_CFG_REFSEL_VDDX

SL_HAL_IADC_VREF_VDDX0P8BUF = _IADC_CFG_REFSEL_VDDX0P8BUF

}

IADC Reference.

enum

sl_hal_iadc_neg_input_port_gnd_pin_selection_t {

SL_HAL_IADC_NEG_PIN_INPUT_GND_AUX = 0

SL_HAL_IADC_NEG_PIN_INPUT_GND = 1

}

IADC negative input ground pin selection.

enum

sl_hal_iadc_pos_input_port_supply_pin_selection_t {

SL_HAL_IADC_POS_PIN_INPUT_AVDD = 0

SL_HAL_IADC_POS_PIN_INPUT_IOVDD = 1

SL_HAL_IADC_POS_PIN_INPUT_VSS = 2

SL_HAL_IADC_POS_PIN_INPUT_VSS_AUX = 3

SL_HAL_IADC_POS_PIN_INPUT_DVDD = 4

SL_HAL_IADC_POS_PIN_INPUT_DECOUPLE = 7

}

IADC positive input supply pin selection.

enum

sl_hal_iadc_negative_port_input_t {

SL_HAL_IADC_NEG_PORT_INPUT_GND = _IADC_SCAN_PORTNEG_GND

SL_HAL_IADC_NEG_PORT_INPUT_DAC_1 = _IADC_SCAN_PORTNEG_DAC1

SL_HAL_IADC_NEG_PORT_INPUT_PAD_ANA_1 = _IADC_SCAN_PORTNEG_PADANA1

SL_HAL_IADC_NEG_PORT_INPUT_PORT_A = _IADC_SCAN_PORTNEG_PORTA

SL_HAL_IADC_NEG_PORT_INPUT_PORT_B = _IADC_SCAN_PORTNEG_PORTB

SL_HAL_IADC_NEG_PORT_INPUT_PORT_C = _IADC_SCAN_PORTNEG_PORTC

SL_HAL_IADC_NEG_PORT_INPUT_PORT_D = _IADC_SCAN_PORTNEG_PORTD

}

IADC negative input port selection.

enum

sl_hal_iadc_positive_port_input_t {

SL_HAL_IADC_POS_PORT_INPUT_GND = _IADC_SCAN_PORTPOS_GND

SL_HAL_IADC_POS_PORT_INPUT_SUPPLY = _IADC_SCAN_PORTPOS_SUPPLY

SL_HAL_IADC_POS_PORT_INPUT_DAC_0 = _IADC_SCAN_PORTPOS_DAC0

SL_HAL_IADC_POS_PORT_INPUT_PAD_ANA_0 = _IADC_SCAN_PORTPOS_PADANA0

SL_HAL_IADC_POS_PORT_INPUT_PORT_A = _IADC_SCAN_PORTPOS_PORTA

SL_HAL_IADC_POS_PORT_INPUT_PORT_B = _IADC_SCAN_PORTPOS_PORTB

SL_HAL_IADC_POS_PORT_INPUT_PORT_C = _IADC_SCAN_PORTPOS_PORTC

SL_HAL_IADC_POS_PORT_INPUT_PORT_D = _IADC_SCAN_PORTPOS_PORTD

}

IADC positive input port selection.

enum

sl_hal_iadc_gpio_port_input_pin_t {

SL_HAL_IADC_GPIO_PORT_INPUT_PIN_0 = 0

SL_HAL_IADC_GPIO_PORT_INPUT_PIN_1 = 1

SL_HAL_IADC_GPIO_PORT_INPUT_PIN_2 = 2

SL_HAL_IADC_GPIO_PORT_INPUT_PIN_3 = 3

SL_HAL_IADC_GPIO_PORT_INPUT_PIN_4 = 4

SL_HAL_IADC_GPIO_PORT_INPUT_PIN_5 = 5

SL_HAL_IADC_GPIO_PORT_INPUT_PIN_6 = 6

SL_HAL_IADC_GPIO_PORT_INPUT_PIN_7 = 7

SL_HAL_IADC_GPIO_PORT_INPUT_PIN_8 = 8

SL_HAL_IADC_GPIO_PORT_INPUT_PIN_9 = 9

SL_HAL_IADC_GPIO_PORT_INPUT_PIN_10 = 10

SL_HAL_IADC_GPIO_PORT_INPUT_PIN_11 = 11

SL_HAL_IADC_GPIO_PORT_INPUT_PIN_12 = 12

SL_HAL_IADC_GPIO_PORT_INPUT_PIN_13 = 13

SL_HAL_IADC_GPIO_PORT_INPUT_PIN_14 = 14

SL_HAL_IADC_GPIO_PORT_INPUT_PIN_15 = 15

}

IADC pin input for GPIO port.

enum

sl_hal_iadc_channel_id_t {

SL_HAL_IADC_CHANNEL_ID_0 = 0

SL_HAL_IADC_CHANNEL_ID_1 = 1

SL_HAL_IADC_CHANNEL_ID_2 = 2

SL_HAL_IADC_CHANNEL_ID_3 = 3

SL_HAL_IADC_CHANNEL_ID_4 = 4

SL_HAL_IADC_CHANNEL_ID_5 = 5

SL_HAL_IADC_CHANNEL_ID_6 = 6

SL_HAL_IADC_CHANNEL_ID_7 = 7

SL_HAL_IADC_CHANNEL_ID_8 = 8

SL_HAL_IADC_CHANNEL_ID_9 = 9

SL_HAL_IADC_CHANNEL_ID_10 = 10

SL_HAL_IADC_CHANNEL_ID_11 = 11

SL_HAL_IADC_CHANNEL_ID_12 = 12

SL_HAL_IADC_CHANNEL_ID_13 = 13

SL_HAL_IADC_CHANNEL_ID_14 = 14

SL_HAL_IADC_CHANNEL_ID_15 = 15

SL_HAL_IADC_CHANNEL_ID_MAX = 16

}

Channel identifier.

enum

sl_hal_iadc_cmd_t {

SL_HAL_IADC_CMD_START_SINGLE = IADC_CMD_SINGLESTART

SL_HAL_IADC_CMD_STOP_SINGLE = IADC_CMD_SINGLESTOP

SL_HAL_IADC_CMD_START_SCAN = IADC_CMD_SCANSTART

SL_HAL_IADC_CMD_STOP_SCAN = IADC_CMD_SCANSTOP

SL_HAL_IADC_CMD_ENABLE_TIMER = IADC_CMD_TIMEREN

SL_HAL_IADC_CMD_DISABLE_TIMER = IADC_CMD_TIMERDIS

}

IADC Commands.

enum

sl_hal_iadc_config_adc_mode_t {

SL_HAL_IADC_CFG_ADC_MODE_NORMAL = _IADC_CFG_ADCMODE_NORMAL

SL_HAL_IADC_CFG_ADC_MODE_HIGH_SPEED = _IADC_CFG_ADCMODE_HIGHSPEED

SL_HAL_IADC_CFG_ADC_MODE_HIGH_ACCURACY = _IADC_CFG_ADCMODE_HIGHACCURACY

}

IADC Configuration.

enum

sl_hal_iadc_config_osr_high_speed_t {

SL_HAL_IADC_OSR_HIGH_SPEED_2X = _IADC_CFG_OSRHS_HISPD2

SL_HAL_IADC_OSR_HIGH_SPEED_4X = _IADC_CFG_OSRHS_HISPD4

SL_HAL_IADC_OSR_HIGH_SPEED_8X = _IADC_CFG_OSRHS_HISPD8

SL_HAL_IADC_OSR_HIGH_SPEED_16X = _IADC_CFG_OSRHS_HISPD16

SL_HAL_IADC_OSR_HIGH_SPEED_32X = _IADC_CFG_OSRHS_HISPD32

SL_HAL_IADC_OSR_HIGH_SPEED_64X = _IADC_CFG_OSRHS_HISPD64

}

IADC Over sampling rate for high speed.

enum

sl_hal_iadc_config_osr_high_accuracy_t {

SL_HAL_IADC_OSR_HIGH_ACCURACY_16X = _IADC_CFG_OSRHA_HIACC16

SL_HAL_IADC_OSR_HIGH_ACCURACY_32X = _IADC_CFG_OSRHA_HIACC32

SL_HAL_IADC_OSR_HIGH_ACCURACY_64X = _IADC_CFG_OSRHA_HIACC64

SL_HAL_IADC_OSR_HIGH_ACCURACY_92X = _IADC_CFG_OSRHA_HIACC92

SL_HAL_IADC_OSR_HIGH_ACCURACY_128X = _IADC_CFG_OSRHA_HIACC128

SL_HAL_IADC_OSR_HIGH_ACCURACY_256X = _IADC_CFG_OSRHA_HIACC256

}

IADC Over sampling rate for high accuracy.

enum

sl_hal_iadc_analog_gain_t {

SL_HAL_IADC_ANALOG_GAIN_0P5 = _IADC_CFG_ANALOGGAIN_ANAGAIN0P5

SL_HAL_IADC_ANALOG_GAIN_1 = _IADC_CFG_ANALOGGAIN_ANAGAIN1

SL_HAL_IADC_ANALOG_GAIN_2 = _IADC_CFG_ANALOGGAIN_ANAGAIN2

SL_HAL_IADC_ANALOG_GAIN_3 = _IADC_CFG_ANALOGGAIN_ANAGAIN3

SL_HAL_IADC_ANALOG_GAIN_4 = _IADC_CFG_ANALOGGAIN_ANAGAIN4

}

IADC Analog Gain.

enum

sl_hal_iadc_config_twos_comp_t {

SL_HAL_IADC_TWOS_COMP_AUTO = _IADC_CFG_TWOSCOMPL_AUTO

SL_HAL_IADC_TWOS_COMP_UNIPOLAR = _IADC_CFG_TWOSCOMPL_FORCEUNIPOLAR

SL_HAL_IADC_TWOS_COMP_BIPOLAR = _IADC_CFG_TWOSCOMPL_FORCEBIPOLAR

}

IADC Two's complement results.

enum

sl_hal_iadc_trigger_t {

SL_HAL_IADC_TRIGGER_IMMEDIATE = _IADC_TRIGGER_SCANTRIGSEL_IMMEDIATE

SL_HAL_IADC_TRIGGER_TIMER = _IADC_TRIGGER_SCANTRIGSEL_TIMER

SL_HAL_IADC_TRIGGER_PRSCLKGRP = _IADC_TRIGGER_SCANTRIGSEL_PRSCLKGRP

SL_HAL_IADC_TRIGGER_PRSPOS = _IADC_TRIGGER_SCANTRIGSEL_PRSPOS

SL_HAL_IADC_TRIGGER_PRSNEG = _IADC_TRIGGER_SCANTRIGSEL_PRSNEG

SL_HAL_IADC_TRIGGER_LESENSE = _IADC_TRIGGER_SCANTRIGSEL_LESENSE

}

IADC trigger.

enum

sl_hal_iadc_trigger_action_t {

SL_HAL_IADC_TRIGGER_ACTION_ONCE = _IADC_TRIGGER_SCANTRIGACTION_ONCE

SL_HAL_IADC_TRIGGER_ACTION_CONTINUOUS = _IADC_TRIGGER_SCANTRIGACTION_CONTINUOUS

}

IADC trigger action.

enum

sl_hal_iadc_fifo_config_dvl_t {

SL_HAL_IADC_DATA_VALID_1 = _IADC_SCANFIFOCFG_DVL_VALID1

SL_HAL_IADC_DATA_VALID_2 = _IADC_SCANFIFOCFG_DVL_VALID2

SL_HAL_IADC_DATA_VALID_3 = _IADC_SCANFIFOCFG_DVL_VALID3

SL_HAL_IADC_DATA_VALID_4 = _IADC_SCANFIFOCFG_DVL_VALID4

SL_HAL_IADC_DATA_VALID_5 = _IADC_SCANFIFOCFG_DVL_VALID5

SL_HAL_IADC_DATA_VALID_6 = _IADC_SCANFIFOCFG_DVL_VALID6

SL_HAL_IADC_DATA_VALID_7 = _IADC_SCANFIFOCFG_DVL_VALID7

SL_HAL_IADC_DATA_VALID_8 = _IADC_SCANFIFOCFG_DVL_VALID8

}

IADC data valid level before requesting DMA transfer.

enum

sl_hal_iadc_digital_averaging_t {

SL_HAL_IADC_AVERAGE_1 = _IADC_CFG_DIGAVG_AVG1

SL_HAL_IADC_AVERAGE_2 = _IADC_CFG_DIGAVG_AVG2

SL_HAL_IADC_AVERAGE_4 = _IADC_CFG_DIGAVG_AVG4

SL_HAL_IADC_AVERAGE_8 = _IADC_CFG_DIGAVG_AVG8

SL_HAL_IADC_AVERAGE_16 = _IADC_CFG_DIGAVG_AVG16

}

IADC digital averaging function.

Functions#

void

sl_hal_iadc_init(IADC_TypeDef *iadc, const sl_hal_iadc_init_t *init, uint32_t src_clk_freq)

Initialize IADC.

void

sl_hal_iadc_calculate_gain_offset(IADC_TypeDef *iadc, const sl_hal_iadc_init_t *init, sl_hal_iadc_config_adc_mode_t adc_mode, uint8_t config, uint32_t adc_clk_prescale)

Calculate gain and offset.

void

sl_hal_iadc_reset(IADC_TypeDef *iadc)

Reset IADC to same state as after a HW reset.

void

sl_hal_iadc_init_scan(IADC_TypeDef *iadc, const sl_hal_iadc_init_scan_t *init, const sl_hal_iadc_scan_table_t *scan_table)

Initialize IADC scan sequence.

void

sl_hal_iadc_update_scan_entry(IADC_TypeDef *iadc, uint8_t id, sl_hal_iadc_scan_table_entry_t *entry)

Add/update entry in scan table.

void

sl_hal_iadc_set_scan_mask(IADC_TypeDef *iadc, uint32_t mask)

Set mask of IADC scan table entries to include in scan using scan mask.

void

sl_hal_iadc_set_scan_mask_multiple_entries(IADC_TypeDef *iadc, const sl_hal_iadc_scan_table_t *scan_table)

Set mask of IADC scan table entries to include in scan using scan table.

void

sl_hal_iadc_init_single(IADC_TypeDef *iadc, const sl_hal_iadc_init_single_t *init, const sl_hal_iadc_single_input_t *input)

Initialize single IADC conversion.

void

sl_hal_iadc_update_single_input(IADC_TypeDef *iadc, const sl_hal_iadc_single_input_t *input)

Update IADC single input selection.

uint8_t

sl_hal_iadc_calculate_src_clk_prescale(IADC_TypeDef *iadc, uint32_t src_clk_freq, uint32_t cmu_clk_freq)

Calculate prescaler for CLK_SRC_ADC high speed clock.

uint32_t

sl_hal_iadc_calculate_adc_clk_prescale(IADC_TypeDef *iadc, uint32_t adc_clk_freq, uint32_t cmu_clk_freq, sl_hal_iadc_config_adc_mode_t adc_mode, uint8_t scr_clk_prescaler)

Calculate prescaler for ADC_CLK clock.

uint8_t

sl_hal_iadc_calculate_timebase(IADC_TypeDef *iadc, uint32_t src_clk_freq)

Calculate timebase value in order to get a timebase providing at least 1us.

sl_hal_iadc_result_t

sl_hal_iadc_read_single_result(IADC_TypeDef *iadc)

Read most recent single conversion result.

sl_hal_iadc_result_t

sl_hal_iadc_read_single_fifo_result(IADC_TypeDef *iadc)

Pull result from single data FIFO.

sl_hal_iadc_result_t

sl_hal_iadc_read_scan_result(IADC_TypeDef *iadc)

Read most recent scan conversion result.

sl_hal_iadc_result_t

sl_hal_iadc_pull_scan_fifo_result(IADC_TypeDef *iadc)

Pull result from scan data FIFO.

uint32_t

sl_hal_iadc_get_reference_voltage(sl_hal_iadc_voltage_reference_t reference)

Get reference voltage selection.

void

sl_hal_iadc_enable(IADC_TypeDef *iadc)

Enable the IADC.

void

sl_hal_iadc_wait_sync(IADC_TypeDef *iadc)

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

void

sl_hal_iadc_wait_ready(IADC_TypeDef *iadc)

Wait for disabling to finish.

void

sl_hal_iadc_disable(IADC_TypeDef *iadc)

Disable the IADC.

void

sl_hal_iadc_start_scan(IADC_TypeDef *iadc)

Start the IADC scan queue.

void

sl_hal_iadc_stop_scan(IADC_TypeDef *iadc)

Stop the IADC scan queue.

void

sl_hal_iadc_start_single(IADC_TypeDef *iadc)

Start the IADC single queue.

void

sl_hal_iadc_stop_single(IADC_TypeDef *iadc)

Stop the IADC single queue.

void

sl_hal_iadc_enable_timer(IADC_TypeDef *iadc)

Enable the IADC's local timer.

void

sl_hal_iadc_disable_timer(IADC_TypeDef *iadc)

Disable the IADC's local timer and resets the counter.

uint32_t

sl_hal_iadc_get_status(IADC_TypeDef *iadc)

Get status bits of IADC.

void

sl_hal_iadc_clear_interrupts(IADC_TypeDef *iadc, uint32_t flags)

Clear one or more pending IADC interrupts.

void

sl_hal_iadc_disable_interrupts(IADC_TypeDef *iadc, uint32_t flags)

Disable one or more IADC interrupts.

void

sl_hal_iadc_enable_interrupts(IADC_TypeDef *iadc, uint32_t flags)

Enable one or more IADC interrupts.

uint32_t

sl_hal_iadc_get_pending_interrupts(IADC_TypeDef *iadc)

Get pending IADC interrupt flags.

uint32_t

sl_hal_iadc_get_enable_pending_interrupts(IADC_TypeDef *iadc)

Get enabled and pending IADC interrupt flags.

void

sl_hal_iadc_set_pending_interrupts(IADC_TypeDef *iadc, uint32_t flags)

Set one or more pending IADC interrupts from SW.

uint32_t

sl_hal_iadc_pull_single_fifo_data(IADC_TypeDef *iadc)

Pull data from single data FIFO.

uint32_t

sl_hal_iadc_read_single_data(IADC_TypeDef *iadc)

Read most recent single conversion data.

uint32_t

sl_hal_iadc_pull_scan_fifo_data(IADC_TypeDef *iadc)

Pull data from scan data FIFO.

uint32_t

sl_hal_iadc_read_scan_data(IADC_TypeDef *iadc)

Read most recent scan conversion data.

void

sl_hal_iadc_set_command(IADC_TypeDef *iadc, sl_hal_iadc_cmd_t cmd)

Start/stop scan sequence, single conversion and/or timer.

uint32_t

sl_hal_iadc_get_scan_mask(IADC_TypeDef *iadc)

Get the scan mask currently used in the IADC.

uint8_t

sl_hal_iadc_get_single_fifo_cnt(IADC_TypeDef *iadc)

Get the number of elements in the IADC single FIFO.

uint8_t

sl_hal_iadc_get_scan_fifo_cnt(IADC_TypeDef *iadc)

Get the number of elements in the IADC scan FIFO.

sl_hal_iadc_negative_port_input_t

sl_hal_iadc_port_pin_to_neg_port(const sl_gpio_t *gpio)

Convert the GPIO port/pin to IADC negative port input selection.

sl_hal_iadc_positive_port_input_t

sl_hal_iadc_port_pin_to_pos_port(const sl_gpio_t *gpio)

Convert the GPIO port/pin to IADC positive port input selection.

Macros#

#define

SL_HAL_IADC_REF_VALID (ref)

Validation of IADC register block pointer reference for assert statements.

#define

SL_HAL_IADC_DEFAULT_VREF 1210

IADC default reference voltage in mV.

#define

SL_HAL_IADC_SCANTABLE_DEFAULT undefined

#define

SL_HAL_IADC_SCANTABLEENTRY_DEFAULT undefined

Default config for IADC scan table entry structure.

#define

SL_HAL_IADC_ALL_CONFIG undefined

Default IADC sructure for all configs.

#define

SL_HAL_IADC_INIT_DEFAULT undefined

Default config for IADC init structure.

#define

SL_HAL_IADC_CONFIG_DEFAULT undefined

Default IADC config structure.

#define

SL_HAL_IADC_INITSCAN_DEFAULT undefined

Default config for IADC scan init structure.

#define

SL_HAL_IADC_INITSINGLE_DEFAULT undefined

Default config for IADC single init structure.

#define

SL_HAL_IADC_SINGLEINPUT_DEFAULT undefined

Default config for IADC single input structure.

Enumeration Documentation#

sl_hal_iadc_warmup_t#

sl_hal_iadc_warmup_t

Warm-up mode.

Enumerator
SL_HAL_IADC_WARMUP_NORMAL	IADC shutdown after each conversion.
SL_HAL_IADC_WARMUP_KEEP_IN_STANDBY	IADC is kept in standby mode between conversion.
SL_HAL_IADC_WARMUP_KEEP_WARM	IADC and reference selected for scan mode kept warmup, allowing continuous conversion.

sl_hal_iadc_alignment_t#

sl_hal_iadc_alignment_t

IADC result alignment.

Enumerator
SL_HAL_IADC_ALIGNMENT_RIGHT_12	IADC results 12-bit right aligned.
SL_HAL_IADC_ALIGNMENT_LEFT_12	IADC results 12-bit left aligned.
SL_HAL_IADC_ALIGNMENT_RIGHT_16	IADC results 16-bit right aligned.
SL_HAL_IADC_ALIGNMENT_LEFT_16	IADC results 16-bit left aligned.
SL_HAL_IADC_ALIGNMENT_RIGHT_20	IADC results 20-bit right aligned.
SL_HAL_IADC_ALIGNMENT_LEFT_20	IADC results 20-bit left aligned.

sl_hal_iadc_voltage_reference_t#

sl_hal_iadc_voltage_reference_t

IADC Reference.

Enumerator
SL_HAL_IADC_REFERENCE_VREFINT_1V2	Internal 1.2V Band Gap Reference (buffered) to ground.
SL_HAL_IADC_VREF_EXT_1V25	External reference (unbuffered) VREFP to VREFN.
SL_HAL_IADC_VREF_EXT_2V5	External reference (unbuffered) VREFP to VREFN. Supports 2.5V in high accuracy mode.
SL_HAL_IADC_VREF_VDDX	VDDX (unbuffered) to ground.
SL_HAL_IADC_VREF_VDDX0P8BUF	0.8 * VDDX (buffered) to ground.

sl_hal_iadc_neg_input_port_gnd_pin_selection_t#

sl_hal_iadc_neg_input_port_gnd_pin_selection_t

IADC negative input ground pin selection.

Enumerator
SL_HAL_IADC_NEG_PIN_INPUT_GND_AUX	GND auxiliary.
SL_HAL_IADC_NEG_PIN_INPUT_GND	GND.

sl_hal_iadc_pos_input_port_supply_pin_selection_t#

sl_hal_iadc_pos_input_port_supply_pin_selection_t

IADC positive input supply pin selection.

Enumerator
SL_HAL_IADC_POS_PIN_INPUT_AVDD	AVDD / 4.
SL_HAL_IADC_POS_PIN_INPUT_IOVDD	VDDIO / 4.
SL_HAL_IADC_POS_PIN_INPUT_VSS	VSS.
SL_HAL_IADC_POS_PIN_INPUT_VSS_AUX	VSS auxiliary.
SL_HAL_IADC_POS_PIN_INPUT_DVDD	DVDD / 4.
SL_HAL_IADC_POS_PIN_INPUT_DECOUPLE	DECOUPLE / 4.

sl_hal_iadc_negative_port_input_t#

sl_hal_iadc_negative_port_input_t

IADC negative input port selection.

Enumerator
SL_HAL_IADC_NEG_PORT_INPUT_GND	Ground.
SL_HAL_IADC_NEG_PORT_INPUT_DAC_1	Direct connection to DAC_1 input pin.
SL_HAL_IADC_NEG_PORT_INPUT_PAD_ANA_1	Direct connection to Pad_ana_1 input pin.
SL_HAL_IADC_NEG_PORT_INPUT_PORT_A	GPIO port A.
SL_HAL_IADC_NEG_PORT_INPUT_PORT_B	GPIO port B.
SL_HAL_IADC_NEG_PORT_INPUT_PORT_C	GPIO port C.
SL_HAL_IADC_NEG_PORT_INPUT_PORT_D	GPIO port D.

sl_hal_iadc_positive_port_input_t#

sl_hal_iadc_positive_port_input_t

IADC positive input port selection.

Enumerator
SL_HAL_IADC_POS_PORT_INPUT_GND	Ground.
SL_HAL_IADC_POS_PORT_INPUT_SUPPLY	Supply.
SL_HAL_IADC_POS_PORT_INPUT_DAC_0	Direct connection to DAC_0 input pin.
SL_HAL_IADC_POS_PORT_INPUT_PAD_ANA_0	Direct connection to Pad_ana_0 input pin.
SL_HAL_IADC_POS_PORT_INPUT_PORT_A	GPIO port A.
SL_HAL_IADC_POS_PORT_INPUT_PORT_B	GPIO port B.
SL_HAL_IADC_POS_PORT_INPUT_PORT_C	GPIO port C.
SL_HAL_IADC_POS_PORT_INPUT_PORT_D	GPIO port D.

sl_hal_iadc_gpio_port_input_pin_t#

sl_hal_iadc_gpio_port_input_pin_t

IADC pin input for GPIO port.

Enumerator
SL_HAL_IADC_GPIO_PORT_INPUT_PIN_0
SL_HAL_IADC_GPIO_PORT_INPUT_PIN_1
SL_HAL_IADC_GPIO_PORT_INPUT_PIN_2
SL_HAL_IADC_GPIO_PORT_INPUT_PIN_3
SL_HAL_IADC_GPIO_PORT_INPUT_PIN_4
SL_HAL_IADC_GPIO_PORT_INPUT_PIN_5
SL_HAL_IADC_GPIO_PORT_INPUT_PIN_6
SL_HAL_IADC_GPIO_PORT_INPUT_PIN_7
SL_HAL_IADC_GPIO_PORT_INPUT_PIN_8
SL_HAL_IADC_GPIO_PORT_INPUT_PIN_9
SL_HAL_IADC_GPIO_PORT_INPUT_PIN_10
SL_HAL_IADC_GPIO_PORT_INPUT_PIN_11
SL_HAL_IADC_GPIO_PORT_INPUT_PIN_12
SL_HAL_IADC_GPIO_PORT_INPUT_PIN_13
SL_HAL_IADC_GPIO_PORT_INPUT_PIN_14
SL_HAL_IADC_GPIO_PORT_INPUT_PIN_15

sl_hal_iadc_channel_id_t#

sl_hal_iadc_channel_id_t

Channel identifier.

Enumerator
SL_HAL_IADC_CHANNEL_ID_0
SL_HAL_IADC_CHANNEL_ID_1
SL_HAL_IADC_CHANNEL_ID_2
SL_HAL_IADC_CHANNEL_ID_3
SL_HAL_IADC_CHANNEL_ID_4
SL_HAL_IADC_CHANNEL_ID_5
SL_HAL_IADC_CHANNEL_ID_6
SL_HAL_IADC_CHANNEL_ID_7
SL_HAL_IADC_CHANNEL_ID_8
SL_HAL_IADC_CHANNEL_ID_9
SL_HAL_IADC_CHANNEL_ID_10
SL_HAL_IADC_CHANNEL_ID_11
SL_HAL_IADC_CHANNEL_ID_12
SL_HAL_IADC_CHANNEL_ID_13
SL_HAL_IADC_CHANNEL_ID_14
SL_HAL_IADC_CHANNEL_ID_15
SL_HAL_IADC_CHANNEL_ID_MAX

sl_hal_iadc_cmd_t#

sl_hal_iadc_cmd_t

IADC Commands.

Enumerator
SL_HAL_IADC_CMD_START_SINGLE	Start single queue.
SL_HAL_IADC_CMD_STOP_SINGLE	Stop single queue.
SL_HAL_IADC_CMD_START_SCAN	Start scan queue.
SL_HAL_IADC_CMD_STOP_SCAN	Stop scan queue.
SL_HAL_IADC_CMD_ENABLE_TIMER	Enable Timer.
SL_HAL_IADC_CMD_DISABLE_TIMER	Disable Timer.

sl_hal_iadc_config_adc_mode_t#

sl_hal_iadc_config_adc_mode_t

IADC Configuration.

Enumerator
SL_HAL_IADC_CFG_ADC_MODE_NORMAL	Normal mode.
SL_HAL_IADC_CFG_ADC_MODE_HIGH_SPEED	High Speed mode.
SL_HAL_IADC_CFG_ADC_MODE_HIGH_ACCURACY	High Accuracy mode.

sl_hal_iadc_config_osr_high_speed_t#

sl_hal_iadc_config_osr_high_speed_t

IADC Over sampling rate for high speed.

Enumerator
SL_HAL_IADC_OSR_HIGH_SPEED_2X	High speed oversampling of 4x.
SL_HAL_IADC_OSR_HIGH_SPEED_4X	High speed oversampling of 4x.
SL_HAL_IADC_OSR_HIGH_SPEED_8X	High speed oversampling of 8x.
SL_HAL_IADC_OSR_HIGH_SPEED_16X	High speed oversampling of 16x.
SL_HAL_IADC_OSR_HIGH_SPEED_32X	High speed oversampling of 32x.
SL_HAL_IADC_OSR_HIGH_SPEED_64X	High speed oversampling of 64x.

sl_hal_iadc_config_osr_high_accuracy_t#

sl_hal_iadc_config_osr_high_accuracy_t

IADC Over sampling rate for high accuracy.

Enumerator
SL_HAL_IADC_OSR_HIGH_ACCURACY_16X	High accuracy oversampling of 16x.
SL_HAL_IADC_OSR_HIGH_ACCURACY_32X	High accuracy oversampling of 32x.
SL_HAL_IADC_OSR_HIGH_ACCURACY_64X	High accuracy oversampling of 64x.
SL_HAL_IADC_OSR_HIGH_ACCURACY_92X	High accuracy oversampling of 92x.
SL_HAL_IADC_OSR_HIGH_ACCURACY_128X	High accuracy oversampling of 128x.
SL_HAL_IADC_OSR_HIGH_ACCURACY_256X	High accuracy oversampling of 256x.

sl_hal_iadc_analog_gain_t#

sl_hal_iadc_analog_gain_t

IADC Analog Gain.

Enumerator
SL_HAL_IADC_ANALOG_GAIN_0P5	Analog gain of 0.5x.
SL_HAL_IADC_ANALOG_GAIN_1	Analog gain of 1x.
SL_HAL_IADC_ANALOG_GAIN_2	Analog gain of 2x.
SL_HAL_IADC_ANALOG_GAIN_3	Analog gain of 3x.
SL_HAL_IADC_ANALOG_GAIN_4	Analog gain of 4x.

sl_hal_iadc_config_twos_comp_t#

sl_hal_iadc_config_twos_comp_t

IADC Two's complement results.

Enumerator
SL_HAL_IADC_TWOS_COMP_AUTO	Automatic. Single ended => Unipolar, Differential => Bipolar.
SL_HAL_IADC_TWOS_COMP_UNIPOLAR	All results in unipolar format. Negative diff input gives 0 as result.
SL_HAL_IADC_TWOS_COMP_BIPOLAR	All results in bipolar (2's complement) format. Half range for SE.

sl_hal_iadc_trigger_t#

sl_hal_iadc_trigger_t

IADC trigger.

Enumerator
SL_HAL_IADC_TRIGGER_IMMEDIATE	Start single/scan queue immediately.
SL_HAL_IADC_TRIGGER_TIMER	Timer starts single/scan queue.
SL_HAL_IADC_TRIGGER_PRSCLKGRP	PRS0 from timer in same clock group starts single/scan queue.
SL_HAL_IADC_TRIGGER_PRSPOS	PRS0 positive edge starts single/scan queue.
SL_HAL_IADC_TRIGGER_PRSNEG	PRS0 negative edge starts single/scan queue.
SL_HAL_IADC_TRIGGER_LESENSE	LESENSE starts scan queue.

sl_hal_iadc_trigger_action_t#

sl_hal_iadc_trigger_action_t

IADC trigger action.

Enumerator
SL_HAL_IADC_TRIGGER_ACTION_ONCE	Convert single/scan queue once per trigger.
SL_HAL_IADC_TRIGGER_ACTION_CONTINUOUS	Convert single/scan queue continuously.

sl_hal_iadc_fifo_config_dvl_t#

sl_hal_iadc_fifo_config_dvl_t

IADC data valid level before requesting DMA transfer.

Enumerator
SL_HAL_IADC_DATA_VALID_1	Data valid level is 1 before requesting DMA transfer.
SL_HAL_IADC_DATA_VALID_2	Data valid level is 2 before requesting DMA transfer.
SL_HAL_IADC_DATA_VALID_3	Data valid level is 3 before requesting DMA transfer.
SL_HAL_IADC_DATA_VALID_4	Data valid level is 4 before requesting DMA transfer.
SL_HAL_IADC_DATA_VALID_5	Data valid level is 5 before requesting DMA transfer.
SL_HAL_IADC_DATA_VALID_6	Data valid level is 6 before requesting DMA transfer.
SL_HAL_IADC_DATA_VALID_7	Data valid level is 7 before requesting DMA transfer.
SL_HAL_IADC_DATA_VALID_8	Data valid level is 8 before requesting DMA transfer.

sl_hal_iadc_digital_averaging_t#

sl_hal_iadc_digital_averaging_t

IADC digital averaging function.

Enumerator
SL_HAL_IADC_AVERAGE_1	Average over 1 sample (no averaging).
SL_HAL_IADC_AVERAGE_2	Average over 2 sample.
SL_HAL_IADC_AVERAGE_4	Average over 4 sample.
SL_HAL_IADC_AVERAGE_8	Average over 8 sample.
SL_HAL_IADC_AVERAGE_16	Average over 16 sample.

Function Documentation#

sl_hal_iadc_init#

void sl_hal_iadc_init (IADC_TypeDef * iadc, const sl_hal_iadc_init_t * init, uint32_t src_clk_freq)

Initialize IADC.

Parameters

Type	Direction	Argument Name	Description
IADC_TypeDef *	[in]	iadc	Pointer to IADC peripheral register block.
const sl_hal_iadc_init_t *	[in]	init	Pointer to IADC initialization structure.
uint32_t	[in]	src_clk_freq	CLK_SRC_ADC frequency wanted. The frequency will automatically be adjusted to be within valid range according to reference manual.

Initializes common parts for both single conversion and scan sequence. In addition, single and/or scan control configuration must be done, please refer to sl_hal_iadc_init_single() and sl_hal_iadc_init_scan() respectively.

Note

This function will stop any ongoing conversions.

sl_hal_iadc_calculate_gain_offset#

void sl_hal_iadc_calculate_gain_offset (IADC_TypeDef * iadc, const sl_hal_iadc_init_t * init, sl_hal_iadc_config_adc_mode_t adc_mode, uint8_t config, uint32_t adc_clk_prescale)

Calculate gain and offset.

Parameters

Type	Direction	Argument Name	Description
IADC_TypeDef *	[in]	iadc	Pointer to IADC peripheral register block.
const sl_hal_iadc_init_t *	[in]	init	Pointer to IADC initialization structure.
sl_hal_iadc_config_adc_mode_t	[in]	adc_mode	Mode for IADC config.
uint8_t	[in]	config	IADC config number.
uint32_t	[in]	adc_clk_prescale	IADC clock prescaler.

This function calculates the gain and offset values for the IADC based on the provided configuration.

sl_hal_iadc_reset#

void sl_hal_iadc_reset (IADC_TypeDef * iadc)

Reset IADC to same state as after a HW reset.

Parameters

Type	Direction	Argument Name	Description
IADC_TypeDef *	[in]	iadc	Pointer to IADC peripheral register block.

sl_hal_iadc_init_scan#

void sl_hal_iadc_init_scan (IADC_TypeDef * iadc, const sl_hal_iadc_init_scan_t * init, const sl_hal_iadc_scan_table_t * scan_table)

Initialize IADC scan sequence.

Parameters

Type	Direction	Argument Name	Description
IADC_TypeDef *	[in]	iadc	Pointer to IADC peripheral register block.
const sl_hal_iadc_init_scan_t *	[in]	init	Pointer to IADC initialization structure.
const sl_hal_iadc_scan_table_t *	[in]	scan_table	Pointer to IADC scan table structure.

This function will configure scan mode and set up entries in the scan table. The scan table mask can be updated by calling IADC_updateScanMask.

Note

This function will stop any ongoing conversions. If an even numbered pin is selected for the positive input, the negative input must use an odd numbered pin and vice versa.

sl_hal_iadc_update_scan_entry#

void sl_hal_iadc_update_scan_entry (IADC_TypeDef * iadc, uint8_t id, sl_hal_iadc_scan_table_entry_t * entry)

Add/update entry in scan table.

Parameters

Type	Direction	Argument Name	Description
IADC_TypeDef *	[in]	iadc	Pointer to IADC peripheral register block.
uint8_t	[in]	id	ID of scan table entry to add.
sl_hal_iadc_scan_table_entry_t *	[in]	entry	Pointer to scan table entry structure.

This function will update or add an entry in the scan table with a specific ID.

Note

This function will stop any ongoing conversions.

sl_hal_iadc_set_scan_mask#

void sl_hal_iadc_set_scan_mask (IADC_TypeDef * iadc, uint32_t mask)

Set mask of IADC scan table entries to include in scan using scan mask.

Parameters

Type	Direction	Argument Name	Description
IADC_TypeDef *	[in]	iadc	Pointer to IADC peripheral register block.
uint32_t	[in]	mask	Mask of scan table entries to include in scan.

Set mask of scan table entries to include in next scan. This function can be called while scan conversions are ongoing, but the new scan mask will take effect once the ongoing scan is completed.

sl_hal_iadc_set_scan_mask_multiple_entries#

void sl_hal_iadc_set_scan_mask_multiple_entries (IADC_TypeDef * iadc, const sl_hal_iadc_scan_table_t * scan_table)

Set mask of IADC scan table entries to include in scan using scan table.

Parameters

Type	Direction	Argument Name	Description
IADC_TypeDef *	[in]	iadc	Pointer to IADC peripheral register block.
const sl_hal_iadc_scan_table_t *	[in]	scan_table	Pointer to IADC scan table structure.

Set mask of scan table entries to include in next scan. This function can be called while scan conversions are ongoing, but the new scan mask will take effect once the ongoing scan is completed.

sl_hal_iadc_init_single#

void sl_hal_iadc_init_single (IADC_TypeDef * iadc, const sl_hal_iadc_init_single_t * init, const sl_hal_iadc_single_input_t * input)

Initialize single IADC conversion.

Parameters

Type	Direction	Argument Name	Description
IADC_TypeDef *	[in]	iadc	Pointer to IADC peripheral register block.
const sl_hal_iadc_init_single_t *	[in]	init	Pointer to IADC single initialization structure.
const sl_hal_iadc_single_input_t *	[in]	input	Pointer to IADC single input selection initialization structure.

This function will initialize the single conversion and configure the single input selection.

Note

This function will stop any ongoing conversions. If an even numbered pin is selected for the positive input, the negative input must use an odd numbered pin and vice versa.

sl_hal_iadc_update_single_input#

void sl_hal_iadc_update_single_input (IADC_TypeDef * iadc, const sl_hal_iadc_single_input_t * input)

Update IADC single input selection.

Parameters

Type	Direction	Argument Name	Description
IADC_TypeDef *	[in]	iadc	Pointer to IADC peripheral register block.
const sl_hal_iadc_single_input_t *	[in]	input	Pointer to single input selection structure.

This function updates the single input selection. The function can be called while single and/or scan conversions are ongoing and the new input configuration will take place on the next single conversion.

Note

If an even numbered pin is selected for the positive input, the negative input must use an odd numbered pin and vice versa.

sl_hal_iadc_calculate_src_clk_prescale#

uint8_t sl_hal_iadc_calculate_src_clk_prescale (IADC_TypeDef * iadc, uint32_t src_clk_freq, uint32_t cmu_clk_freq)

Calculate prescaler for CLK_SRC_ADC high speed clock.

Parameters

Type	Direction	Argument Name	Description
IADC_TypeDef *	[in]	iadc	Pointer to IADC peripheral register block.
uint32_t	[in]	src_clk_freq	CLK_SRC_ADC frequency wanted. The frequency will automatically be adjusted to be within valid range according to reference manual.
uint32_t	[in]	cmu_clk_freq	Frequency in Hz of reference CLK_CMU_ADC.

The IADC high speed clock is given by: CLK_SRC_ADC / (scr_clk_prescaler + 1).

Returns

Divider value to use for IADC in order to achieve a high speed clock value.

sl_hal_iadc_calculate_adc_clk_prescale#

uint32_t sl_hal_iadc_calculate_adc_clk_prescale (IADC_TypeDef * iadc, uint32_t adc_clk_freq, uint32_t cmu_clk_freq, sl_hal_iadc_config_adc_mode_t adc_mode, uint8_t scr_clk_prescaler)

Calculate prescaler for ADC_CLK clock.

Parameters

Type	Direction	Argument Name	Description
IADC_TypeDef *	[in]	iadc	Pointer to IADC peripheral register block.
uint32_t	[in]	adc_clk_freq	ADC_CLK frequency wanted. The frequency will automatically be adjusted to be within valid range according to reference manual.
uint32_t	[in]	cmu_clk_freq	Frequency in Hz of CLK_CMU_ADC.
sl_hal_iadc_config_adc_mode_t	[in]	adc_mode	Mode for IADC config.
uint8_t	[in]	scr_clk_prescaler	Precaler setting for ADC_CLK.

The ADC_CLK is given by: CLK_SRC_ADC / (adcClkprescale + 1).

Returns

Divider value to use for IADC in order to achieve a ADC_CLK frequency.

sl_hal_iadc_calculate_timebase#

uint8_t sl_hal_iadc_calculate_timebase (IADC_TypeDef * iadc, uint32_t src_clk_freq)

Calculate timebase value in order to get a timebase providing at least 1us.

Parameters

Type	Direction	Argument Name	Description
IADC_TypeDef *	[in]	iadc	Pointer to IADC peripheral register block.
uint32_t	[in]	src_clk_freq	Frequency in Hz of reference CLK_SRC_ADC clock.

Returns

Timebase value to use for IADC in order to achieve at least 1 us.

sl_hal_iadc_read_single_result#

sl_hal_iadc_result_t sl_hal_iadc_read_single_result (IADC_TypeDef * iadc)

Read most recent single conversion result.

Parameters

Type	Direction	Argument Name	Description
IADC_TypeDef *	[in]	iadc	Pointer to IADC peripheral register block.

The result struct includes both the data and the ID (0x20) if show_id was set when initializing single mode. Calling this function will not affect the state of the single data FIFO.

Note

Check data valid flag before calling this function.

Returns

Single conversion result struct holding data and id.

sl_hal_iadc_read_single_fifo_result#

sl_hal_iadc_result_t sl_hal_iadc_read_single_fifo_result (IADC_TypeDef * iadc)

Pull result from single data FIFO.

Parameters

Type	Direction	Argument Name	Description
IADC_TypeDef *	[in]	iadc	Pointer to IADC peripheral register block.

The result struct includes both the data and the ID (0x20) if show_id was set when initializing single mode.

Note

Check data valid flag before calling this function.

Returns

Single conversion result struct holding data and id.

sl_hal_iadc_read_scan_result#

sl_hal_iadc_result_t sl_hal_iadc_read_scan_result (IADC_TypeDef * iadc)

Read most recent scan conversion result.

Parameters

Type	Direction	Argument Name	Description
IADC_TypeDef *	[in]	iadc	Pointer to IADC peripheral register block.

The result struct includes both the data and the ID (0x20) if show_id was set when initializing scan entry. Calling this function will not affect the state of the scan data FIFO.

Note

Check data valid flag before calling this function.

Returns

Scan conversion result struct holding data and id.

sl_hal_iadc_pull_scan_fifo_result#

sl_hal_iadc_result_t sl_hal_iadc_pull_scan_fifo_result (IADC_TypeDef * iadc)

Pull result from scan data FIFO.

Parameters

Type	Direction	Argument Name	Description
IADC_TypeDef *	[in]	iadc	Pointer to IADC peripheral register block.

The result struct includes both the data and the ID (0x20) if show_id was set when initializing scan entry.

Note

Check data valid flag before calling this function.

Returns

Scan conversion result struct holding data and id.

sl_hal_iadc_get_reference_voltage#

uint32_t sl_hal_iadc_get_reference_voltage (sl_hal_iadc_voltage_reference_t reference)

Get reference voltage selection.

Parameters

Type	Direction	Argument Name	Description
sl_hal_iadc_voltage_reference_t	[in]	reference	IADC Reference selection.

Returns

IADC reference voltage in millivolts.

sl_hal_iadc_enable#

void sl_hal_iadc_enable (IADC_TypeDef * iadc)

Enable the IADC.

Parameters

Type	Direction	Argument Name	Description
IADC_TypeDef *	[in]	iadc	A pointer to the IADC peripheral register block.

sl_hal_iadc_wait_sync#

void sl_hal_iadc_wait_sync (IADC_TypeDef * iadc)

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

Parameters

Type	Direction	Argument Name	Description
IADC_TypeDef *	[in]	iadc	A pointer to the IADC peripheral register block.

sl_hal_iadc_wait_ready#

void sl_hal_iadc_wait_ready (IADC_TypeDef * iadc)

Wait for disabling to finish.

Parameters

Type	Direction	Argument Name	Description
IADC_TypeDef *	[in]	iadc	A pointer to the ADC peripheral register block.

sl_hal_iadc_disable#

void sl_hal_iadc_disable (IADC_TypeDef * iadc)

Disable the IADC.

Parameters

Type	Direction	Argument Name	Description
IADC_TypeDef *	[in]	iadc	A pointer to the IADC peripheral register block.

sl_hal_iadc_start_scan#

void sl_hal_iadc_start_scan (IADC_TypeDef * iadc)

Start the IADC scan queue.

Parameters

Type	Direction	Argument Name	Description
IADC_TypeDef *	[in]	iadc	A pointer to the IADC peripheral register block.

Note

Enables The scan sequence and will start a scan if using the immediate trigger mode.

sl_hal_iadc_stop_scan#

void sl_hal_iadc_stop_scan (IADC_TypeDef * iadc)

Stop the IADC scan queue.

Parameters

Type	Direction	Argument Name	Description
IADC_TypeDef *	[in]	iadc	A pointer to the IADC peripheral register block.

sl_hal_iadc_start_single#

void sl_hal_iadc_start_single (IADC_TypeDef * iadc)

Start the IADC single queue.

Parameters

Type	Direction	Argument Name	Description
IADC_TypeDef *	[in]	iadc	A pointer to the IADC peripheral register block.

Note

Enables the scan sequence and will start a scan if using the immediate trigger mode.

sl_hal_iadc_stop_single#

void sl_hal_iadc_stop_single (IADC_TypeDef * iadc)

Stop the IADC single queue.

Parameters

Type	Direction	Argument Name	Description
IADC_TypeDef *	[in]	iadc	A pointer to the IADC peripheral register block.

sl_hal_iadc_enable_timer#

void sl_hal_iadc_enable_timer (IADC_TypeDef * iadc)

Enable the IADC's local timer.

Parameters

Type	Direction	Argument Name	Description
IADC_TypeDef *	[in]	iadc	A pointer to the IADC peripheral register block.

sl_hal_iadc_disable_timer#

void sl_hal_iadc_disable_timer (IADC_TypeDef * iadc)

Disable the IADC's local timer and resets the counter.

Parameters

Type	Direction	Argument Name	Description
IADC_TypeDef *	[in]	iadc	A pointer to the IADC peripheral register block.

sl_hal_iadc_get_status#

uint32_t sl_hal_iadc_get_status (IADC_TypeDef * iadc)

Get status bits of IADC.

Parameters

Type	Direction	Argument Name	Description
IADC_TypeDef *	[in]	iadc	Pointer to IADC peripheral register block.

Returns

IADC status bits.

sl_hal_iadc_clear_interrupts#

void sl_hal_iadc_clear_interrupts (IADC_TypeDef * iadc, uint32_t flags)

Clear one or more pending IADC interrupts.

Parameters

Type	Direction	Argument Name	Description
IADC_TypeDef *	[in]	iadc	Pointer to IADC peripheral register block.
uint32_t	[in]	flags	Pending IADC interrupt source to clear. Use a bitwise logic OR combination of valid interrupt flags for the IADC module (IADC_IF_nnn).

sl_hal_iadc_disable_interrupts#

void sl_hal_iadc_disable_interrupts (IADC_TypeDef * iadc, uint32_t flags)

Disable one or more IADC interrupts.

Parameters

Type	Direction	Argument Name	Description
IADC_TypeDef *	[in]	iadc	Pointer to IADC peripheral register block.
uint32_t	[in]	flags	IADC interrupt sources to disable. Use a bitwise logic OR combination of valid interrupt flags for the IADC module (IADC_IF_nnn).

sl_hal_iadc_enable_interrupts#

void sl_hal_iadc_enable_interrupts (IADC_TypeDef * iadc, uint32_t flags)

Enable one or more IADC interrupts.

Parameters

Type	Direction	Argument Name	Description
IADC_TypeDef *	[in]	iadc	Pointer to IADC peripheral register block.
uint32_t	[in]	flags	IADC interrupt sources to enable. Use a bitwise logic OR combination of valid interrupt flags for the IADC module (IADC_IF_nnn).

Note

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

sl_hal_iadc_get_pending_interrupts#

uint32_t sl_hal_iadc_get_pending_interrupts (IADC_TypeDef * iadc)

Get pending IADC interrupt flags.

Parameters

Type	Direction	Argument Name	Description
IADC_TypeDef *	[in]	iadc	Pointer to IADC peripheral register block.

Returns

IADC interrupt sources pending. A bitwise logic OR combination of valid interrupt flags for the IADC module (IADC_IF_nnn).

Note

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

sl_hal_iadc_get_enable_pending_interrupts#

uint32_t sl_hal_iadc_get_enable_pending_interrupts (IADC_TypeDef * iadc)

Get enabled and pending IADC interrupt flags.

Parameters

Type	Direction	Argument Name	Description
IADC_TypeDef *	[in]	iadc	Pointer to IADC peripheral register block.

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

Note

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

Returns

Pending and enabled IADC interrupt sources. The return value is the bitwise AND combination of
- The OR combination of enabled interrupt sources in IADCx_IEN_nnn register (IADCx_IEN_nnn).
- The OR combination of valid interrupt flags of the IADC module (IADCx_IF_nnn).

sl_hal_iadc_set_pending_interrupts#

void sl_hal_iadc_set_pending_interrupts (IADC_TypeDef * iadc, uint32_t flags)

Set one or more pending IADC interrupts from SW.

Parameters

Type	Direction	Argument Name	Description
IADC_TypeDef *	[in]	iadc	Pointer to IADC peripheral register block.
uint32_t	[in]	flags	IADC interrupt sources to set to pending. Use a bitwise logic OR combination of valid interrupt flags for the IADC module (IADC_IF_nnn).

sl_hal_iadc_pull_single_fifo_data#

uint32_t sl_hal_iadc_pull_single_fifo_data (IADC_TypeDef * iadc)

Pull data from single data FIFO.

Parameters

Type	Direction	Argument Name	Description
IADC_TypeDef *	[in]	iadc	Pointer to IADC peripheral register block.

If show_id was set when initializing single mode, the results will contain the ID (0x20).

Note

Check data valid flag before calling this function.

Returns

Single conversion data.

sl_hal_iadc_read_single_data#

uint32_t sl_hal_iadc_read_single_data (IADC_TypeDef * iadc)

Read most recent single conversion data.

Parameters

Type	Direction	Argument Name	Description
IADC_TypeDef *	[in]	iadc	Pointer to IADC peripheral register block.

If show_id was set when initializing single mode, the data will contain the ID (0x20). Calling this function will not affect the state of the single data FIFO.

Note

Check data valid flag before calling this function.

Returns

Single conversion data.

sl_hal_iadc_pull_scan_fifo_data#

uint32_t sl_hal_iadc_pull_scan_fifo_data (IADC_TypeDef * iadc)

Pull data from scan data FIFO.

Parameters

Type	Direction	Argument Name	Description
IADC_TypeDef *	[in]	iadc	Pointer to IADC peripheral register block.

If show_id was set for the scan entry initialization, the data will contain the ID of the scan entry.

Note

Check data valid flag before calling this function.

Returns

Scan conversion data.

sl_hal_iadc_read_scan_data#

uint32_t sl_hal_iadc_read_scan_data (IADC_TypeDef * iadc)

Read most recent scan conversion data.

Parameters

Type	Direction	Argument Name	Description
IADC_TypeDef *	[in]	iadc	Pointer to IADC peripheral register block.

If show_id was set for the scan entry initialization, the data will contain the ID of the scan entry. Calling this function will not affect the state of the scan data FIFO.

Note

Check data valid flag before calling this function.

Returns

Scan conversion data.

sl_hal_iadc_set_command#

void sl_hal_iadc_set_command (IADC_TypeDef * iadc, sl_hal_iadc_cmd_t cmd)

Start/stop scan sequence, single conversion and/or timer.

Parameters

Type	Direction	Argument Name	Description
IADC_TypeDef *	[in]	iadc	Pointer to IADC peripheral register block.
sl_hal_iadc_cmd_t	[in]	cmd	Command to be performed.

sl_hal_iadc_get_scan_mask#

uint32_t sl_hal_iadc_get_scan_mask (IADC_TypeDef * iadc)

Get the scan mask currently used in the IADC.

Parameters

Type	Direction	Argument Name	Description
IADC_TypeDef *	[in]	iadc	Pointer to IADC peripheral register block.

Returns

Mask of scan table entries currently included in scan.

sl_hal_iadc_get_single_fifo_cnt#

uint8_t sl_hal_iadc_get_single_fifo_cnt (IADC_TypeDef * iadc)

Get the number of elements in the IADC single FIFO.

Parameters

Type	Direction	Argument Name	Description
IADC_TypeDef *	[in]	iadc	Pointer to IADC peripheral register block.

Returns

Number of elements in single FIFO.

sl_hal_iadc_get_scan_fifo_cnt#

uint8_t sl_hal_iadc_get_scan_fifo_cnt (IADC_TypeDef * iadc)

Get the number of elements in the IADC scan FIFO.

Parameters

Type	Direction	Argument Name	Description
IADC_TypeDef *	[in]	iadc	Pointer to IADC peripheral register block.

Returns

Number of elements in scan FIFO.

sl_hal_iadc_port_pin_to_neg_port#

sl_hal_iadc_negative_port_input_t sl_hal_iadc_port_pin_to_neg_port (const sl_gpio_t * gpio, pin)

Convert the GPIO port/pin to IADC negative port input selection.

Parameters

Type	Direction	Argument Name	Description
const sl_gpio_t *	[in]	gpio	GPIO port.
	[in]	pin	GPIO in.

Returns

IADC negative port input selection.

sl_hal_iadc_port_pin_to_pos_port#

sl_hal_iadc_positive_port_input_t sl_hal_iadc_port_pin_to_pos_port (const sl_gpio_t * gpio, pin)

Convert the GPIO port/pin to IADC positive port input selection.

Parameters

Type	Direction	Argument Name	Description
const sl_gpio_t *	[in]	gpio	GPIO port.
	[in]	pin	GPIO in.

Returns

IADC positive port input selection.