atmega328p::adc Namespace Reference

Analog-to-digital converter definitions. More...

Enumerations
enum class	Channel : uint8_t {   ADC0 = 0 , ADC1 = 1 , ADC2 = 2 , ADC3 = 3 ,   ADC4 = 4 , ADC5 = 5 , ADC6 = 6 , ADC7 = 7 }
	External ADC input channels. More...
enum class	InputPin : uint8_t {   ADC0 = 0x10 , ADC1 = 0x11 , ADC2 = 0x12 , ADC3 = 0x13 ,   ADC4 = 0x14 , ADC5 = 0x15 , ADC6 = 0xFF , ADC7 = 0xFF }
	Logical pin associated with each external ADC channel. More...
enum class	InternalInput : uint8_t { TemperatureSensor = 8 , Bandgap = 14 , Ground = 15 }
	Internal ADC multiplexer inputs. More...
enum class	Reference : uint8_t { AREF = 0 , AVCC = 1 , Reserved = 2 , Internal1V1 = 3 }
	ADC voltage-reference selections. More...
enum class	TriggerSource : uint8_t {   FreeRunning = 0 , AnalogComparator = 1 , ExternalInterrupt0 = 2 , Timer0CompareMatchA = 3 ,   Timer0Overflow = 4 , Timer1CompareMatchB = 5 , Timer1Overflow = 6 , Timer1CaptureEvent = 7 }
	Automatic conversion trigger sources. More...
enum class	Prescaler : uint16_t {   Divide2 = 2 , Divide4 = 4 , Divide8 = 8 , Divide16 = 16 ,   Divide32 = 32 , Divide64 = 64 , Divide128 = 128 }
	ADC clock prescaler values. More...
enum	: uint32_t {   resolution_bits = 10 , max_result = 1023 , max_external_channel_count = 8 , external_channel_count = package::selected::adc_channel_count ,   normal_conversion_cycles = 13 , first_conversion_cycles = 25 , internal_reference_nominal_mv = 1100 , recommended_clock_min_hz = 50000 ,   recommended_clock_max_hz = 200000 , electrical_clock_max_hz = 1000000 , recommended_source_impedance_max_ohms = 10000 , normal_conversion_time_min_us_at_1mhz = 13 ,   normal_conversion_time_max_us_at_50khz = 260 , first_conversion_time_min_us_at_1mhz = 25 , first_conversion_time_max_us_at_50khz = 500 , max_sample_rate_at_max_resolution_sps = 15000 }
enum	: uint8_t {   has_internal_temperature_sensor = 1 , has_internal_bandgap_input = 1 , has_ground_input = 1 , input_pin_range_starts_at_gnd = 1 ,   input_pin_range_ends_at_vcc = 1 , conversion_range_starts_at_gnd = 1 , conversion_range_ends_at_vref = 1 , temperature_sensor_calibrated_accuracy_c = 10 ,   temperature_sensor_requires_calibration = 1 , temperature_sensor_gain_signature_address = 0x03 , temperature_sensor_offset_signature_address = 0x02 }
enum	: uint16_t {   automotive_temperature_code_minus_40c = 0x010D , automotive_temperature_code_25c = 0x0160 , automotive_temperature_code_125c = 0x01E0 , automotive_accuracy_test_vcc_mv = 4000 ,   automotive_accuracy_test_vref_mv = 4000 }

Variables
static constexpr float	family_absolute_accuracy_lsb = 2.0f
static constexpr float	family_inl_lsb = 0.5f
static constexpr float	automotive_typical_absolute_accuracy_lsb_at_200khz = 2.2f
static constexpr float	automotive_max_absolute_accuracy_lsb_at_200khz = 3.5f
static constexpr float	automotive_typical_inl_lsb_at_200khz = 0.6f
static constexpr float	automotive_max_inl_lsb_at_200khz = 1.5f
static constexpr float	automotive_typical_dnl_lsb_at_200khz = 0.3f
static constexpr float	automotive_max_dnl_lsb_at_200khz = 0.7f
static constexpr float	automotive_max_gain_error_lsb = 3.5f
static constexpr float	automotive_max_offset_error_lsb = 3.5f

Detailed Description

Analog-to-digital converter definitions.

Enumeration Type Documentation

anonymous enum

anonymous enum : uint16_t

Enumerator
automotive_temperature_code_minus_40c	Automotive temperature code minus 40c.
automotive_temperature_code_25c	Automotive temperature code 25c.
automotive_temperature_code_125c	Automotive temperature code 125c.
automotive_accuracy_test_vcc_mv	Automotive accuracy test VCC (mV).
automotive_accuracy_test_vref_mv	Automotive accuracy test VREF (mV).

anonymous enum

anonymous enum : uint8_t

Enumerator
has_internal_temperature_sensor	Internal temperature sensor available.
has_internal_bandgap_input	Internal bandgap input available.
has_ground_input	Ground input available.
input_pin_range_starts_at_gnd	Input pin range starts at gnd.
input_pin_range_ends_at_vcc	Input pin range ends at VCC.
conversion_range_starts_at_gnd	Conversion range starts at gnd.
conversion_range_ends_at_vref	Conversion range ends at VREF.
temperature_sensor_calibrated_accuracy_c	Temperature sensor calibrated accuracy c.
temperature_sensor_requires_calibration	Temperature sensor requires calibration.
temperature_sensor_gain_signature_address	Temperature sensor gain signature address.
temperature_sensor_offset_signature_address	Temperature sensor offset signature address.

anonymous enum

anonymous enum : uint32_t

Enumerator
resolution_bits	Converter result width (bits).
max_result	Maximum 10-bit result.
max_external_channel_count	Maximum external inputs across packages.
external_channel_count	External inputs exposed by the selected package.
normal_conversion_cycles	ADC clock cycles per conversion.
first_conversion_cycles	ADC cycles for first conversion.
internal_reference_nominal_mv	Nominal internal reference (mV).
recommended_clock_min_hz	Recommended clock min (Hz).
recommended_clock_max_hz	Recommended clock max (Hz).
electrical_clock_max_hz	Electrical clock max (Hz).
recommended_source_impedance_max_ohms	Recommended maximum source impedance (ohms).
normal_conversion_time_min_us_at_1mhz	Normal conversion time min us at 1mhz.
normal_conversion_time_max_us_at_50khz	Normal conversion time max us at 50khz.
first_conversion_time_min_us_at_1mhz	First conversion time min us at 1mhz.
first_conversion_time_max_us_at_50khz	First conversion time max us at 50khz.
max_sample_rate_at_max_resolution_sps	Max sample rate at max resolution sps.

Channel

enum class atmega328p::adc::Channel : uint8_t

strong

External ADC input channels.

Enumerator
ADC0	0 - External ADC input 0 (PC0).
ADC1	1 - External ADC input 1 (PC1).
ADC2	2 - External ADC input 2 (PC2).
ADC3	3 - External ADC input 3 (PC3).
ADC4	4 - External ADC input 4 (PC4).
ADC5	5 - External ADC input 5 (PC5).
ADC6	6 - External ADC input 6 (32-terminal package only).
ADC7	7 - External ADC input 7 (32-terminal package only).

InputPin

enum class atmega328p::adc::InputPin : uint8_t

strong

Logical pin associated with each external ADC channel.

Enumerator
ADC0	0x10 - ADC input 0 on PC0.
ADC1	0x11 - ADC input 1 on PC1.
ADC2	0x12 - ADC input 2 on PC2.
ADC3	0x13 - ADC input 3 on PC3.
ADC4	0x14 - ADC input 4 on PC4.
ADC5	0x15 - ADC input 5 on PC5.
ADC6	0xFF - Analog-only input; no GPIO pin mapping.
ADC7	0xFF - Analog-only input; no GPIO pin mapping.

InternalInput

enum class atmega328p::adc::InternalInput : uint8_t

strong

Internal ADC multiplexer inputs.

Enumerator
TemperatureSensor	8 - On-chip temperature sensor.
Bandgap	14 - Internal bandgap voltage.
Ground	15 - Ground for offset measurement.

Prescaler

enum class atmega328p::adc::Prescaler : uint16_t

strong

ADC clock prescaler values.

Enumerator
Divide2	2 - Divide ADC clock by 2.
Divide4	4 - Divide ADC clock by 4.
Divide8	8 - Divide ADC clock by 8.
Divide16	16 - Divide ADC clock by 16.
Divide32	32 - Divide ADC clock by 32.
Divide64	64 - Divide ADC clock by 64.
Divide128	128 - Divide ADC clock by 128.

Reference

enum class atmega328p::adc::Reference : uint8_t

strong

ADC voltage-reference selections.

Enumerator
AREF	0 - External reference on AREF.
AVCC	1 - Analog supply voltage reference.
Reserved	2 - Reserved; do not select.
Internal1V1	3 - Internal nominal 1.1 V reference.

TriggerSource

enum class atmega328p::adc::TriggerSource : uint8_t

strong

Automatic conversion trigger sources.

Enumerator
FreeRunning	0 - Convert continuously.
AnalogComparator	1 - Analog comparator event.
ExternalInterrupt0	2 - INT0 event.
Timer0CompareMatchA	3 - Timer0 compare A event.
Timer0Overflow	4 - Timer0 overflow.
Timer1CompareMatchB	5 - Timer1 compare B event.
Timer1Overflow	6 - Timer1 overflow.
Timer1CaptureEvent	7 - Timer1 input-capture event.

Variable Documentation

automotive_max_absolute_accuracy_lsb_at_200khz

float atmega328p::adc::automotive_max_absolute_accuracy_lsb_at_200khz = 3.5f

staticconstexpr

automotive_max_dnl_lsb_at_200khz

float atmega328p::adc::automotive_max_dnl_lsb_at_200khz = 0.7f

staticconstexpr

automotive_max_gain_error_lsb

float atmega328p::adc::automotive_max_gain_error_lsb = 3.5f

staticconstexpr

automotive_max_inl_lsb_at_200khz

float atmega328p::adc::automotive_max_inl_lsb_at_200khz = 1.5f

staticconstexpr

automotive_max_offset_error_lsb

float atmega328p::adc::automotive_max_offset_error_lsb = 3.5f

staticconstexpr

automotive_typical_absolute_accuracy_lsb_at_200khz

float atmega328p::adc::automotive_typical_absolute_accuracy_lsb_at_200khz = 2.2f

staticconstexpr

automotive_typical_dnl_lsb_at_200khz

float atmega328p::adc::automotive_typical_dnl_lsb_at_200khz = 0.3f

staticconstexpr

automotive_typical_inl_lsb_at_200khz

float atmega328p::adc::automotive_typical_inl_lsb_at_200khz = 0.6f

staticconstexpr

family_absolute_accuracy_lsb

float atmega328p::adc::family_absolute_accuracy_lsb = 2.0f

staticconstexpr

family_inl_lsb

float atmega328p::adc::family_inl_lsb = 0.5f

staticconstexpr