Analog Input

Measure voltage of analog input pin

Libraries:
Embedded Coder Support Package for STMicroelectronics STM32 Processors / STM32F746G-Discovery
Embedded Coder Support Package for STMicroelectronics STM32 Processors / STM32F769I-Discovery
Embedded Coder Support Package for STMicroelectronics STM32 Processors / STM32L475VG-Discovery (B-L475E-IOT01A)
Simulink Coder Support Package for STMicroelectronics Nucleo Boards / Common
Simulink Support Package for Arduino Hardware / Common

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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Port_1 — Voltage of analog input pin
scalar

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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Pin — Pin name of the analog input

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 .

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

Sample time — Frequency at which the block reads the input pin value
-1 (default)

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

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

Version History

Introduced in R2018a