GPIO Read

Read GPIO pin status

• 

Libraries:
Embedded Coder Support Package for STMicroelectronics Discovery Boards/STM32F4-Discovery

Description

Read the logical value of a digital pin of the STM32F4 –Discovery™ board.

Examples

Push Button and LED

Use the GPIO blocks in the STMicroelectronics® STM32F4-Discovery library to control the push-button and the LED's on the STMicroelectronics® STM32F4-Discovery board.

Open Example

Ports

Output

Port_1 — Output port containing the logical value

scalar

Output port containing the logical value of a digital pin.

Data Types: single | double | int8 | int16 | int32 | uint8 | uint16 | uint32 | Boolean | fixed point | enumerated | bus

Parameters

GPIO port — GPIO port to read the GPIO pin status

GPIOA (default) | GPIOA | GPIOB | GPIOC | GPIOD | GPIOE | GPIOF | GPIOG | GPIOH | GPIOI

Select one of GPIOA to GPIOI ports to get a GPIO pin status.

Pin number — GPIO pin to read the logical status

0 (default) | scalar

Select a GPIO pin to read the logical status.

Sample time — Time frequency at which the read the pin value

-1 (default) | scalar

Specify how often this block reads the pin value, in seconds. Enter a value greater than zero.

Version History

Introduced in R2013b