2/26/2024 0 Comments Nucleo f103rb schematic![]() To achieve this, we utilize the STM32 Hardware Abstraction Layer (HAL) library, which provides convenient functions for working with GPIO pins. Conversely, when the push button is pressed, it connects the PC13 pin to ground, resulting in a logic low signal (active low) being detected on the PC13 pin. In this configuration, when the push button is not pressed, the PC13 pin receives a logic high signal (active high). In the schematic diagram, it is evident that the onboard push button is connected to the PC13 digital pin via a pull-up resistor. ![]() The push button is utilized as a digital input to control the onboard LEDs on the discovery board. The STM32 Nucleo-F103RB board features an onboard push button, which is connected to the PC13 GPIO pin. Using STM32 Nucleo-64 On Board Push Button As mentioned in the content, when using an onboard push button on the STM32 NUCLEO-F103RB board, the appropriate pull-up or pull-down configuration is already present, eliminating the need for external resistors. For interfacing a push button, either Pull-Up Mode or Pull-Down Mode can be used based on how the push button is connected to the GPIO pin. The selection of pull-up or pull-down mode depends on the specific application and circuit design. When the pin is set as an input and not externally driven high, the internal pull-down resistor pulls the pin to a logic low (GND) state.
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