RP.ADC

Entities

Simple Types

• ADC_Mode
• ADC_Sample_Bits
• Celsius
• Microvolts

Array Types

• ADC_Channels

Subtypes

• ADC_Channel
• Analog_Value

Constants

• ADC_Divider_Fraction
• Temperature_Sensor

Subprograms

• Configure
• Configure
• Disable
• Enable
• Enabled
• FIFO_Address
• Read
• Read
• Read_Microvolts
• Set_Divider
• Set_Mode
• Set_Round_Robin
• Set_Sample_Bits
• Set_Sample_Rate
• Temperature
• To_ADC_Channel

Description

ADC_Channel

subtype ADC_Channel is Natural range 0 .. 4;

ADC_Channels

type ADC_Channels is array (ADC_Channel) of Boolean
   with Component_Size => 1,
        Size           => 5;

ADC_Divider_Fraction

ADC_Divider_Fraction : constant := 1.0 / (2.0 ** 8);

ADC_Mode

type ADC_Mode is (One_Shot, Free_Running);

Enumeration Literal

One_Shot

Free_Running

ADC_Sample_Bits

type ADC_Sample_Bits is new Positive
   with Dynamic_Predicate => ADC_Sample_Bits in 8 | 12;

Analog_Value

subtype Analog_Value is HAL.UInt12;

Celsius

type Celsius is new Integer;

Configure

procedure Configure
   (Channel : ADC_Channel)

Parameters

Channel

Configure

procedure Configure
   (Channels : ADC_Channels)

Parameters

Channels

Disable

procedure Disable

Enable

procedure Enable

Enabled

function Enabled return Boolean

Return Value

FIFO_Address

function FIFO_Address
   return System.Address

Return Value

Microvolts

type Microvolts is new Integer;

Read

function Read
   return Analog_Value

Return Value

Read

function Read
   (Channel : ADC_Channel)
   return Analog_Value

Parameters

Channel

Return Value

Read_Microvolts

function Read_Microvolts
   (Channel : ADC_Channel;
    VREF    : Microvolts := 3_300_000)
    return Microvolts

Parameters

Channel

VREF

Return Value

Set_Divider

procedure Set_Divider
   (Div : ADC_Divider)

Parameters

Div

Set_Mode

procedure Set_Mode
   (Mode : ADC_Mode)

Parameters

Mode

Set_Round_Robin

procedure Set_Round_Robin
   (Channels : ADC_Channels)

Parameters

Channels

Set_Sample_Bits

procedure Set_Sample_Bits
   (Bits : ADC_Sample_Bits)

Parameters

Bits

Set_Sample_Rate

procedure Set_Sample_Rate
   (Rate : Hertz)

Parameters

Rate

Temperature

function Temperature
   (Ref_Temp : Celsius := 27;
    Vbe      : Microvolts := 706_000;
    Slope    : Microvolts := 1_721;
    VREF     : Microvolts := 3_300_000)
   return Celsius

Parameters

Ref_Temp

Vbe

Slope

VREF

Return Value

Temperature_Sensor

Temperature_Sensor : constant ADC_Channel := 4;

To_ADC_Channel

function To_ADC_Channel
   (Point : RP.GPIO.GPIO_Point)
   return ADC_Channel

Parameters

Point

Return Value