Embedded C Firmware Library : Arduino / Atmega328p  1
Register Level Embedded C Hardware Abstraction Library for AVR ATmega48A/PA/88A/PA/168A/PA/328/P or Arduino UNO/NANO/MINI
Data Structures
avr_adc.h File Reference

Library for Analog to Digital Converter (ADC) More...

#include <avr/io.h>

Go to the source code of this file.

Data Structures

struct  ADC_ConfigData
 

Macros

ADC_PINS

Options for ADC Pin / Analog Input Channel

#define ADC0   0x00
 
#define ADC1   0x01
 
#define ADC2   0x02
 
#define ADC3   0x03
 
#define ADC4   0x04
 
#define ADC5   0x05
 
#define ADC6   0x06
 
#define ADC7   0x07
 
#define ADC8   0x08
 
#define VBG   0x0E
 
#define GND   0x0F
 
#define ADC_PIN_MASK   0x0F
 
ADC_VOLTAGE_REFERENCE

Options for ADC Voltage Reference

#define ADC_VOLTAGE_REFERENCE_AREF   (0<<REFS0)
 
#define ADC_VOLTAGE_REFERENCE_AVCC   (1<<REFS0)
 
#define ADC_VOLTAGE_REFERENCE_IREF   (1<<REFS1) | (1<<REFS0)
 
#define ADC_VOLTAGE_REFERENCE_MASK   (1<<REFS1) | (1<<REFS0)
 
ADC_PRESCALER

Options for ADC Input Clock Prescaler

#define ADC_PRESCALER_2   (1<<ADPS0)
 
#define ADC_PRESCALER_4   (1<<ADPS1)
 
#define ADC_PRESCALER_8   (1<<ADPS1) | (1<<ADPS0)
 
#define ADC_PRESCALER_16   (1<<ADPS2)
 
#define ADC_PRESCALER_32   (1<<ADPS2) | (1<<ADPS0)
 
#define ADC_PRESCALER_64   (1<<ADPS2) | (1<<ADPS1)
 
#define ADC_PRESCALER_128   (1<<ADPS2) | (1<<ADPS1) | (1<<ADPS0)
 
#define ADC_PRESCALER_MASK   (1<<ADPS2) | (1<<ADPS1) | (1<<ADPS0)
 
ADC_TEMP

Constants for the Chip's Temperature Calculation

#define ADC_TEMP_TOS   0x01
 
#define ADC_TEMP_K   0x01
 

Typedefs

ADC_CONFIGURATION_DATA

Structure used to Configure ADC

typedef struct ADC_ConfigData ADC_ConfigData
 

Functions

ADC_INTERRUPT_CONTROL

Public Functions to Control ADC Interrupts

void ADC_DisableInterrupt ()
 Public Function to Disable ADC Interrupt. More...
 
void ADC_EnableInterrupt ()
 Public Function to Enable ADC Interrupt. More...
 
ADC_CONFIGURATION_AND_CONTROL

Public Functions to Control and Configure ADC

void ADC_Init (ADC_ConfigData Data)
 Public Function to Configure and Initialize ADC. More...
 
void ADC_DeInit ()
 Public Function to De-Initialize ADC. More...
 
ADC_READ

Public Functions to Read Analog Data from ADC

uint16_t ADC_ReadPin (uint8_t Pin)
 Public Function to Read Analog Voltage in Digital Value from a Pin / Analog Input Channel. More...
 
uint16_t ADC_ReadTemperature ()
 Public Function to Read the Chip's Temperature in Degree C. More...
 

Detailed Description

Library for Analog to Digital Converter (ADC) 

Created: 01-05-2020 08:20:10 PM
Author : Arnab Kumar Das
Website: www.ArnabKumarDas.com
Microcontroller Supported: ATmega48A/PA/88A/PA/168A/PA/328/P or Arduino UNO/NANO/MINI

Copyright (c) 2014-2020 Arnab Kumar Das
You may freely modify and share this code, as long as you keep this
notice intact (including the links above). 
Licensed under the Creative Commons BY-SA 3.0 license:

  http://creativecommons.org/licenses/by-sa/3.0/

Disclaimer: To the extent permitted by law, Arnab Kumar Das provides this work
without any warranty.  It might be defective, in which case you agree
to be responsible for all resulting costs and damages.

                +-\/-+
          PC6  1|    |28  PC5 (A5/ADC5)
RXD  (D0) PD0  2|    |27  PC4 (A4/ADC4)
TXD  (D1) PD1  3|    |26  PC3 (A3/ADC3)
     (D2) PD2  4|    |25  PC2 (A2/ADC2)
PWM  (D3) PD3  5|    |24  PC1 (A1/ADC1)
XCK  (D4) PD4  6|    |23  PC0 (A0/ADC0)
          VCC  7|    |22  GND
          GND  8|    |21  AREF
          PB6  9|    |20  AVCC
          PB7 10|    |19  PB5 (D13)
OC0B (D5) PD5 11|    |18  PB4 (D12)
OC0A (D6) PD6 12|    |17  PB3 (D11) PWM
     (D7) PD7 13|    |16  PB2 (D10) PWM
     (D8) PB0 14|    |15  PB1 (D9)  PWM
                +----+

Macro Definition Documentation

◆ ADC0

#define ADC0   0x00

Sets the Analog Input Channel of ADC to : ADC0 Pin

◆ ADC1

#define ADC1   0x01

Sets the Analog Input Channel of ADC to : ADC1 Pin

◆ ADC2

#define ADC2   0x02

Sets the Analog Input Channel of ADC to : ADC2 Pin

◆ ADC3

#define ADC3   0x03

Sets the Analog Input Channel of ADC to : ADC3 Pin

◆ ADC4

#define ADC4   0x04

Sets the Analog Input Channel of ADC to : ADC4 Pin

◆ ADC5

#define ADC5   0x05

Sets the Analog Input Channel of ADC to : ADC5 Pin

◆ ADC6

#define ADC6   0x06

Sets the Analog Input Channel of ADC to : ADC6 Pin

◆ ADC7

#define ADC7   0x07

Sets the Analog Input Channel of ADC to : ADC7 Pin

◆ ADC8

#define ADC8   0x08

Sets the Analog Input Channel of ADC to : ADC8 Pin

◆ VBG

#define VBG   0x0E

Sets the Analog Input Channel of ADC to : Internal VGB 1.1V

◆ GND

#define GND   0x0F

Sets the Analog Input Channel of ADC to : Internal GND 0.0V

◆ ADC_PIN_MASK

#define ADC_PIN_MASK   0x0F

Mask for Analog Input Channel

◆ ADC_VOLTAGE_REFERENCE_AREF

#define ADC_VOLTAGE_REFERENCE_AREF   (0<<REFS0)

Sets the VREF of ADC to : External AREF Pin, Internal VREF turned off

◆ ADC_VOLTAGE_REFERENCE_AVCC

#define ADC_VOLTAGE_REFERENCE_AVCC   (1<<REFS0)

Sets the VREF of ADC to : AVCC with external capacitor at AREF Pin

◆ ADC_VOLTAGE_REFERENCE_IREF

#define ADC_VOLTAGE_REFERENCE_IREF   (1<<REFS1) | (1<<REFS0)

Sets the VREF of ADC to : Internal 1.1V VREF with external capacitor at AREF Pin

◆ ADC_VOLTAGE_REFERENCE_MASK

#define ADC_VOLTAGE_REFERENCE_MASK   (1<<REFS1) | (1<<REFS0)

Mask for ADC Voltage Reference

◆ ADC_PRESCALER_2

#define ADC_PRESCALER_2   (1<<ADPS0)

Sets the ADC Clock Source to : F_CPU/2 : System Clock Divided by 2

◆ ADC_PRESCALER_4

#define ADC_PRESCALER_4   (1<<ADPS1)

Sets the ADC Clock Source to : F_CPU/4 : System Clock Divided by 4

◆ ADC_PRESCALER_8

#define ADC_PRESCALER_8   (1<<ADPS1) | (1<<ADPS0)

Sets the ADC Clock Source to : F_CPU/8 : System Clock Divided by 8

◆ ADC_PRESCALER_16

#define ADC_PRESCALER_16   (1<<ADPS2)

Sets the ADC Clock Source to : F_CPU/16 : System Clock Divided by 16

◆ ADC_PRESCALER_32

#define ADC_PRESCALER_32   (1<<ADPS2) | (1<<ADPS0)

Sets the ADC Clock Source to : F_CPU/32 : System Clock Divided by 32

◆ ADC_PRESCALER_64

#define ADC_PRESCALER_64   (1<<ADPS2) | (1<<ADPS1)

Sets the ADC Clock Source to : F_CPU/64 : System Clock Divided by 64

◆ ADC_PRESCALER_128

#define ADC_PRESCALER_128   (1<<ADPS2) | (1<<ADPS1) | (1<<ADPS0)

Sets the ADC Clock Source to : F_CPU/128 : System Clock Divided by 128

◆ ADC_PRESCALER_MASK

#define ADC_PRESCALER_MASK   (1<<ADPS2) | (1<<ADPS1) | (1<<ADPS0)

Mask for ADC Prescaler

Function Documentation

◆ ADC_DisableInterrupt()

void ADC_DisableInterrupt ( )
inline

Public Function to Disable ADC Interrupt.

Returns
void

◆ ADC_EnableInterrupt()

void ADC_EnableInterrupt ( )
inline

Public Function to Enable ADC Interrupt.

Returns
void

◆ ADC_Init()

void ADC_Init ( ADC_ConfigData  Data)
inline

Public Function to Configure and Initialize ADC.

Parameters
[in]Data: Structure Variable containing ADC Configuration Data
Returns
void

◆ ADC_DeInit()

void ADC_DeInit ( )
inline

Public Function to De-Initialize ADC.

Returns
void

◆ ADC_ReadPin()

uint16_t ADC_ReadPin ( uint8_t  Pin)

Public Function to Read Analog Voltage in Digital Value from a Pin / Analog Input Channel.

Parameters
[in]Pin: Sets the Analog Input Channel for Analog to Digital Converter
Returns
Converted Digital Value for Input Analog Voltage at Selected Pin / Analog Input Channel

◆ ADC_ReadTemperature()

uint16_t ADC_ReadTemperature ( )

Public Function to Read the Chip's Temperature in Degree C.

Returns
Digital Value of Temperature in Degree C