ADC_settings Namespace Reference

Board-dependent settings. More...

Enumerations
enum	ADC_REFERENCE : uint8_t { ADC_REFERENCE::REF_3V3 = static_cast<uint8_t>(ADC_REF_SOURCE::REF_DEFAULT), NONE }
	Voltage reference for the ADC default is the external, it is connected to the 3.3V supply. More...
enum	ADC_INTERNAL_SOURCE : uint8_t { ADC_INTERNAL_SOURCE::VREFSH = 25 }
	Other ADC sources to measure, such as the temperature sensor. More...
enum	ADC_CONVERSION_SPEED : uint8_t {   VERY_LOW_SPEED, ADC_CONVERSION_SPEED::LOW_SPEED = VERY_LOW_SPEED, ADC_CONVERSION_SPEED::MED_SPEED, ADC_CONVERSION_SPEED::HIGH_SPEED,   VERY_HIGH_SPEED = HIGH_SPEED, ADC_CONVERSION_SPEED::ADACK_10, ADC_CONVERSION_SPEED::ADACK_20 }
	ADC conversion speed. Common set of options to select the ADC clock speed F_ADCK, which depends on ADC_F_BUS, except for the ADACK_X_Y options that are independent. This selection affects the sampling speed too. Note: the F_ADCK speed is not equal to the conversion speed; any measurement takes several F_ADCK cycles to complete including the sampling and conversion steps. More...
enum	ADC_SAMPLING_SPEED : uint8_t {   ADC_SAMPLING_SPEED::VERY_LOW_SPEED, ADC_SAMPLING_SPEED::LOW_SPEED, ADC_SAMPLING_SPEED::LOW_MED_SPEED, ADC_SAMPLING_SPEED::MED_SPEED,   ADC_SAMPLING_SPEED::MED_HIGH_SPEED, ADC_SAMPLING_SPEED::HIGH_SPEED, ADC_SAMPLING_SPEED::HIGH_VERY_HIGH_SPEED, ADC_SAMPLING_SPEED::VERY_HIGH_SPEED }
	ADC sampling speed. It selects how many ADCK clock cycles to add. More...

Detailed Description

Board-dependent settings.

Enumeration Type Documentation

ADC_CONVERSION_SPEED

enum ADC_settings::ADC_CONVERSION_SPEED : uint8_t

strong

ADC conversion speed. Common set of options to select the ADC clock speed F_ADCK, which depends on ADC_F_BUS, except for the ADACK_X_Y options that are independent. This selection affects the sampling speed too. Note: the F_ADCK speed is not equal to the conversion speed; any measurement takes several F_ADCK cycles to complete including the sampling and conversion steps.

Note: ADACK_X_Y is useful if you are using the Teensy at a very low clock frequency but want faster conversions, but if F_BUS<F_ADCK, you can't use VERY_HIGH_SPEED for sampling speed.

Enumerator
LOW_SPEED	is guaranteed to be the lowest possible speed within specs for all resolutions.
MED_SPEED	is always >= LOW_SPEED and <= HIGH_SPEED.
HIGH_SPEED	is guaranteed to be the highest possible speed within specs for resolutions
ADACK_10	10 MHz asynchronous ADC clock (independent of the global clocks F_CPU or F_BUS)
ADACK_20	20 MHz asynchronous ADC clock (independent of the global clocks F_CPU or F_BUS)

Definition at line 562 of file settings_defines.h.

ADC_INTERNAL_SOURCE

enum ADC_settings::ADC_INTERNAL_SOURCE : uint8_t

strong

Other ADC sources to measure, such as the temperature sensor.

Enumerator
VREFSH	internal channel, for ADC self-test, hard connected to VRH internally

Definition at line 301 of file settings_defines.h.

ADC_REFERENCE

enum ADC_settings::ADC_REFERENCE : uint8_t

strong

Voltage reference for the ADC default is the external, it is connected to the 3.3V supply.

Enumerator
REF_3V3	3.3 volts

Definition at line 206 of file settings_defines.h.

ADC_SAMPLING_SPEED

enum ADC_settings::ADC_SAMPLING_SPEED : uint8_t

strong

ADC sampling speed. It selects how many ADCK clock cycles to add.

Enumerator
VERY_LOW_SPEED	is the lowest possible sampling speed (+22 ADCK, 24 in total).
LOW_SPEED	adds +18 ADCK, 20 in total.
LOW_MED_SPEED	adds +14, 16 in total.
MED_SPEED	adds +10, 12 in total.
MED_HIGH_SPEED	adds +6 ADCK, 8 in total.
HIGH_SPEED	adds +4 ADCK, 6 in total.
HIGH_VERY_HIGH_SPEED	+2 ADCK, 4 in total
VERY_HIGH_SPEED	is the highest possible sampling speed (0 ADCK added, 2 in total).

Definition at line 603 of file settings_defines.h.