MCP3208 ADC Arduino library

Arduino library for Microchip MCP3208 A/D converter using SPI.

Example

Here is a simple example which shows the capabilities of the library

#include "MCP3208.h"

MCP3208 adc;

uint16_t channel0;
uint16_t channel1;

void setup() {
  Serial.begin(9600);
  adc.begin(); // default pin 10 for CS; pin 17 for Pico on SPI0
  adc.analogReadResolution(12); // set resolution to 12 bit instead 10 bit (default)
  }

void loop() {
  channel0 = adc.analogRead(0);
  channel1 = adc.analogRead(1);
  Serial.print("Channel 0 Value: ");
  Serial.println(channel0);
  Serial.print("Channel 1 Value: ");
  Serial.println(channel1);
  delay(500);
  }

Documentation

Constructor

MCP3208();

Create an ADC.

Example

MCP3208 adc;

Methods

begin()

void begin(uint8_t cs = 10, SPIClass &spi = SPI);

• cs pin for chip select
• spi set optional SPI class to use (SPI, SPI1, SPI2 ...)

Initialize the SPI communication of the A/D converter.
This must done in setup()

Example

setup() {
  adc.begin(); // SPI0, CS pin 10 (default)
  adc.begin(13, SPI1); // SPI1, CS pin 13
  }

analogReadResolution()

Set the digital output resolution of the A/D converter.

void analogReadResolution(uint8_t bits = 10);

• bits analog resolution (1 ... 12), default 10 bit

Example

adc.analogReadResolution(12); // set resolution to 12 bit

analogRead()

Read a single analog input.

uint16_t analogRead(uint8_t channel);

• channel analog input (0 ... 7) to read

Example

uint16_t channel0 = adc.analogRead(0);