ADC: ADC_settings Namespace Reference

ADC 8.0 Analog to Digital Conversor library for the Teensy 4 microprocessor

Enumerations
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 = static_cast<uint8_t>(ADC_REF_SOURCE::REF_NONE) }
| Voltage reference for the ADC. More...
enum | ADC_INTERNAL_SOURCE : uint8_t { ADC_INTERNAL_SOURCE::VREFSH = 25 }
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 }
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 }

## 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.

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)

## ◆ 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

## ◆ ADC_REFERENCE

enum ADC_settings::ADC_REFERENCE : uint8_t
| strong

Voltage reference for the ADC.

Enumerator
REF_3V3 | 3.3 volts

## ◆ 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).