DAC2 Unit

The Dac2 class interfaces with a GP8413 15-bit Digital to Analog Converter (DAC), capable of converting digital signals into two channels of analog voltage output, ranging from 0-5V and 0-10V.

Support the following products:

DAC2Unit

DAC2Hat

Micropython Example:

import os, sys, io
import M5
from M5 import *
import time
from unit import DAC2Unit

i2c = I2C(0, scl=Pin(1), sda=Pin(2), freq=400000)
dac2_0 = DAC2Unit(i2c0, 0x59)
dac2_0.setDACOutputVoltageRange(dac2_0.RANGE_10V)
dac2_0.setVoltage(7.5, channel=dac2_0.CHANNEL_BOTH)

UIFLOW2 Example:

example.svg

class DAC2Unit

Constructors

class DAC2Unit(i2c0, addr)

Create an DAC2Unit object.

  • I2C0 is I2C Port.

  • addr I2C address of the DAC (default is 0x59)..

UIFLOW2:

init.svg

Methods

MiniScaleUnit.setDACOutputVoltageRange(_range)

Sets the output voltage range of the DAC.

  • _range The DAC output voltage range, either DAC2Unit.RANGE_5V or DAC2Unit.RANGE_10V..

UIFLOW2:

setDACOutputVoltageRange.svg

MiniScaleUnit.setVoltage(voltage, channel=Dac2.CHANNEL_BOTH)

Sets the output voltage of the DAC.

  • voltage Desired output voltage from 0.0 to range maximum (5V or 10V).

  • channel The DAC channel to set. Options are Dac2.CHANNEL_0, Dac2.CHANNEL_1, or Dac2.CHANNEL_BOTH.

UIFLOW2:

setVoltage.svg

MiniScaleUnit.setVoltageBoth(voltage0, voltage1)

Sets the output voltage for both channels.

  • voltage0 Desired output voltage from 0.0 to range maximum (5V or 10V).

  • voltage1 Desired output voltage from 0.0 to range maximum (5V or 10V).

UIFLOW2:

setVoltageBoth.svg