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Analog Output

Generate voltage on the specified DAC pin

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Add-On Required: This feature requires the Simulink Support Package for Arduino Hardware add-on.

  • Analog Output block

Libraries:
Simulink Support Package for Arduino Hardware / Common

Description

The Analog Output block generates voltage on the specified DAC pin of the board.

You can run a Simulink® model containing Analog Output block in Connected IO mode on Arduino® boards.

Supported Arduino Boards

  • Arduino Due

  • Arduino MKR 1000

  • Arduino MKR Zero

  • Arduino MKR Wi-Fi® 1010

  • Arduino compatible ESP32 – WROOM

  • Arduino compatible ESP32 – WROVER

  • The Arduino Due board has two12-bit DAC pins, DAC0 and DAC1, available for conversion. When using this board, the block accepts a uint16 value but considers only the least significant 12 bits for conversion.

  • The Arduino MKR1000, Arduino MKR WIFI 1010, Arduino MKR ZERO, and Arduino Nano 33 IoT boards have one 10-bit DAC pin, DAC0, available for conversion. When using these boards, the block accepts a uint16 value but considers only the least significant 10 bits for conversion.

  • The Arduino compatible ESP32 – WROOM and ESP32 – WROVER boards have two 8-bit DAC pins that can be used for conversion, namely, DAC1 and DAC2. When using these boards, the block accepts a uint16 value but considers only the least significant 8 bits for conversion.

The block outputs voltage (Vout) on the DAC pin, such that:

Vout = VrefX(input/2N-1)+ Voffset

This table explains the variables in the formula.

VariableArduino BoardDescription
Arduino Due, Arduino 33 BLE SenseArduino MKR1000, Arduino MKR WIFI 1010, Arduino ZERO, Arduino Nano 33 IoTArduino Compatible ESP32 boards
Vref2.23.273.3Reference voltage for the DAC pin.
input0 < input < 40950 < input < 10230 < input < 255When using Arduino Due, input provided to the block must be between 0 and 4095. Any value higher than 4095 saturates the voltage output at the DAC pin. When using Arduino MKR1000, input provided to the block must be between 0 and 1023. Any value higher than 1023 saturates the voltage output at the DAC pin.
N12108Number of bits on DAC channel.
Voffset0.560.0070Offset voltage on Arduino board.

Ports

Input

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When using Arduino Due, input provided to the block must be between 0 and 4095. Any value higher than 4095 saturates the voltage output at the DAC pin.

When using Arduino MKR1000, Arduino MKR WIFI 1010, or Arduino MKR ZERO, input provided to the block must be between 0 and 1023. Any value higher than 1023 saturates the voltage output at the DAC pin.

When using the Arduino compatible ESP32 boards, input provided to the block must be between 0 and 255. Any value higher than 255 saturates the voltage output at the DAC pin.

Data Types: uint16

Parameters

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Select a DAC pin on which to generate analog voltage. When using Arduino MKR1000, Arduino MKR WIFI 1010, or Arduino MKR ZERO board, select DAC0. The DAC pin, DAC1, is not supported on these boards.

When using the Arduino compatible ESP32 boards, select DAC1 or DAC2.

Click View pin map to open the Arduino Pin Mapping table.

To know how to assign pins for the block, see Pin Mapping for Arduino Timer Independent Blocks.

Version History

Introduced in R2014a

See Also

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