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- Pin value of a GPIO pin set as high impedance
High impedance means that the stm32 microcontroller won't be trying to drive the pin either high or low What you read on the pin will be whatever the logic value is (1 or 0) for whatever voltage happens to be on the pin
- Pin value of a GPIO pin set as high impedance
I am using an STM32F4 discovery board and my intention is to set one of its GPIO pins at high impedance, which I have done as below: GPIO_InitStruct Pin = GPIO_PIN_12; GPIO_InitStruct Mode = GPIO_MODE_INPUT; GPIO_InitStruct Pull = GPIO_NOPULL;
- GPIO input mode with high impedance state | STM32 GPIO - FastBit EBA
A high impedance state is also called a Hi-Z state It’s nothing but keeping your pin floating by not connecting to high voltage state or the ground as shown in Figure1 So, that’s why this state is also called a floating state
- STM32 microcontroller GPIO hardware settings and . . . - STMicroelectronics
The STM32 microcontroller general-purpose input output pin (GPIO) provides many ways to interface with external circuits within an application framework This application note provides basic information about GPIO configurations as well as guidelines for hardware and software developers to optimize the power performance of their STM32 32-bit
- Demystifying Microcontroller GPIO Settings - Embedded Artistry
Configuring a GPIO as an input puts the pin into a high-impedance state In general, there GPIO inputs are primarily configured in one of three ways: High-impedance (often the default – floats if not driven)
- STM32 HAL GPIO Read Pin (GPIO Input Example) + Push Button - DeepBlue
In this STM32 GPIO Read Input Pin Example, we’ve read the pin state for the push button (A9) and used it to drive the LED pin (A8) High or Low depending on the push button input pin state It’s a very simple application and you can modify it as you want to meet your application’s needs
- Getting Started with STM32F103: GPIO Input – EmbeddedExpertIO
Floating, high impedance, and tri-stated are three terms that mean the same thing: the pin is just flopping in the breeze Its state is indeterminate unless it is driven high or low externally You only want to configure a pin as floating if you know it will be driven externally
- GPIO outputs are in high-impedance state - STMicroelectronics
The issue seems to be that the four GPIO pins for the LEDs are in a high-impedance state even though Pinout View shows that they're all configured as outputs The pins are floating at between 1V and 2V (with the scope probe weakly pulling to GND)
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