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), ADC_REFERENCE::REF_1V2 = static_cast<uint8_t>(ADC_REF_SOURCE::REF_ALT), ADC_REFERENCE::REF_EXT, NONE }
	Voltage reference for the ADC default is the external, that is connected to the 3.3V supply. To use the external simply connect AREF to a different voltage alt is connected to the 1.2 V ref. More...
enum	ADC_INTERNAL_SOURCE : uint8_t {   ADC_INTERNAL_SOURCE::TEMP_SENSOR = 24, ADC_INTERNAL_SOURCE::VREF_OUT = 28, ADC_INTERNAL_SOURCE::BANDGAP = 25, ADC_INTERNAL_SOURCE::VREFH = 26,   ADC_INTERNAL_SOURCE::VREFL = 27 }
	Other ADC sources to measure, such as the temperature sensor. More...
enum	ADC_CONVERSION_SPEED : uint8_t {   ADC_CONVERSION_SPEED::VERY_LOW_SPEED, ADC_CONVERSION_SPEED::LOW_SPEED, ADC_CONVERSION_SPEED::MED_SPEED, ADC_CONVERSION_SPEED::HIGH_SPEED_16BITS,   ADC_CONVERSION_SPEED::HIGH_SPEED, ADC_CONVERSION_SPEED::VERY_HIGH_SPEED, ADC_CONVERSION_SPEED::ADACK_2_4, ADC_CONVERSION_SPEED::ADACK_4_0,   ADC_CONVERSION_SPEED::ADACK_5_2, ADC_CONVERSION_SPEED::ADACK_6_2 }
	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::MED_SPEED, ADC_SAMPLING_SPEED::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
VERY_LOW_SPEED	is guaranteed to be the lowest possible speed within specs for resolutions less than 16 bits.
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_16BITS	is guaranteed to be the highest possible speed within specs for all resolutions.
HIGH_SPEED	is guaranteed to be the highest possible speed within specs for resolutions less than 16 bits.
VERY_HIGH_SPEED	may be out of specs
ADACK_2_4	2.4 MHz asynchronous ADC clock (independent of the global clocks F_CPU or F_BUS)
ADACK_4_0	4.0 MHz asynchronous ADC clock (independent of the global clocks F_CPU or F_BUS)
ADACK_5_2	5.2 MHz asynchronous ADC clock (independent of the global clocks F_CPU or F_BUS)
ADACK_6_2	6.2 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
TEMP_SENSOR	Temperature sensor.
VREF_OUT	1.2 V reference
BANDGAP	BANDGAP
VREFH	High VREF
VREFL	Low VREF.

Definition at line 284 of file settings_defines.h.

ADC_REFERENCE

enum ADC_settings::ADC_REFERENCE : uint8_t

strong

Voltage reference for the ADC default is the external, that is connected to the 3.3V supply. To use the external simply connect AREF to a different voltage alt is connected to the 1.2 V ref.

Enumerator
REF_3V3	3.3 volts
REF_1V2	1.2 volts
REF_EXT	External VREF

Definition at line 178 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 (+24 ADCK).
LOW_SPEED	adds +16 ADCK.
MED_SPEED	adds +10 ADCK.
HIGH_SPEED	adds +6 ADCK.
VERY_HIGH_SPEED	is the highest possible sampling speed (0 ADCK added).

Definition at line 603 of file settings_defines.h.