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