Analog Input

Measure voltage of analog input pin

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  • Analog Input block

Libraries:
STM32 Microcontroller Blockset / (Legacy) STM32 MBED Based Boards / Common
STM32 Microcontroller Blockset / (Legacy) STM32 MBED Based Boards / STM32F746G-Discovery
STM32 Microcontroller Blockset / (Legacy) STM32 MBED Based Boards / STM32F769I-Discovery
STM32 Microcontroller Blockset / (Legacy) STM32 MBED Based Boards / STM32L475VG-Discovery (B-L475E-IOT01A)

Description

The Analog Input block measures the voltage of an analog pin relative to the analog input reference voltage on the hardware. The block outputs the measurement as a float value in the range 0–1.

  • If the measured voltage equals the ground voltage, the block emits 0.

  • If the measured voltage equals the analog reference voltage, the block emits 1.

During the external mode simulation, the block outputs the simulation results returned from the executable running on the target hardware.

During simulation in all other modes, the block outputs zeroes.

Ports

Output

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If the measured voltage equals the ground voltage, the block emits 0. If the measured voltage equals the analog reference voltage, the block emits 1.

Parameters

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Specify the digital pin.

To open the pin mapping table, click View pin map.

Make sure to assign different pin name to the different blocks of your model.

Apart from the pins names mentioned in the pin mapping table, there are other alternate pin names (Px_y_ALTz) that can be used to access other hardware peripherals connected to the same pin. To know more, refer to Usage of Alternate Pin Names.

The alternate pin names are only applicable for Simulink® Coder™ Support Package for STMicroelectronics® Nucleo Boards and Discovery boards.

Specify how often this block measures the voltage of the analog input pin, in seconds.

When you specify this parameter as-1, Simulink determines the best sample time for the block based on the block context within the model.

Extended Capabilities

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C/C++ Code Generation
Generate C and C++ code using Simulink® Coder™.

Version History

Introduced in R2018a

See Also