Struct daisy::AdcChannelConfig¶

ClassList > daisy > AdcChannelConfig

Configuration Structure for an ADC Channel. More...

#include <adc.h>

Public Types¶

Type	Name
enum	ConversionSpeed per channel conversion speed added to fixed time based on bitdepth, etc.
enum	MuxPin

Public Attributes¶

Type	Name
uint8_t	mux_channels_
GPIO	mux_pin_
GPIO	pin_
ConversionSpeed	speed_

Public Functions¶

Type	Name
void	InitMux (Pin adc_pin, size_t mux_channels, Pin mux_0, Pin mux_1=Pin(PORTX, 0), Pin mux_2=Pin(PORTX, 0), ConversionSpeed speed=SPEED_8CYCLES_5)
void	InitSingle (Pin pin, ConversionSpeed speed=SPEED_8CYCLES_5)

Detailed Description¶

This can be used to configure a a single input, or a multiplexed input, allowing up to 8 inputs on one channel.

Note:

Sharing data lines to multiple muxes is possible, but each channel sharing data lines must be set to the maximum number of channels, even if some multiplexers have fewer inputs connected.

Public Types Documentation¶

enum ConversionSpeed¶

per channel conversion speed added to fixed time based on bitdepth, etc.

enum daisy::AdcChannelConfig::ConversionSpeed {
    SPEED_1CYCLES_5,
    SPEED_2CYCLES_5,
    SPEED_8CYCLES_5,
    SPEED_16CYCLES_5,
    SPEED_32CYCLES_5,
    SPEED_64CYCLES_5,
    SPEED_387CYCLES_5,
    SPEED_810CYCLES_5
};

enum MuxPin¶

enum daisy::AdcChannelConfig::MuxPin {
    MUX_SEL_0,
    MUX_SEL_1,
    MUX_SEL_2,
    MUX_SEL_LAST
};

Which pin to use for multiplexing

Public Attributes Documentation¶

variable mux_channels_¶

uint8_t daisy::AdcChannelConfig::mux_channels_;

&

variable mux_pin_¶

GPIO daisy::AdcChannelConfig::mux_pin_[MUX_SEL_LAST];

&

variable pin_¶

GPIO daisy::AdcChannelConfig::pin_;

&

variable speed_¶

ConversionSpeed daisy::AdcChannelConfig::speed_;

Public Functions Documentation¶

function InitMux¶

void daisy::AdcChannelConfig::InitMux (
    Pin adc_pin,
    size_t mux_channels,
    Pin mux_0,
    Pin mux_1=Pin ( PORTX , 0),
    Pin mux_2=Pin ( PORTX , 0),
    ConversionSpeed speed=SPEED_8CYCLES_5
)

Initializes a single ADC pin as a Multiplexed ADC. Requires a CD405X Multiplexer connected to the pin. You only need to supply the mux pins that are required, e.g. a 4052 mux would only require mux_0 and mux_1. Internal Callbacks handle the pin addressing.

Parameters:

adc_pin &
mux_channels must be 1-8
mux_0 First mux pin
mux_1 Second mux pin
mux_2 Third mux pin
speed conversion speed for this pin defaults to 8.5 cycles

function InitSingle¶

void daisy::AdcChannelConfig::InitSingle (
    Pin pin,
    ConversionSpeed speed=SPEED_8CYCLES_5
)

Initializes a single ADC pin as an ADC.

Parameters:

pin Pin to init.
speed conversion speed for this pin defaults to 8.5 cycles

The documentation for this class was generated from the following file external-docs/libDaisy/src/per/adc.h