Questions tagged [gpio-external-interrupt]

Certain GPIO pins could be programmed as external interrupt source, through which external devices (such as RF modules, buttons, switches, etc.) could generate interrupts.

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stm32 external interrupt

I am working with a stm32f103 and am trying to get the external interrupt done. My code is: ...
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nucleo-64 103rb EXTI stays pending

The PC13 EXTI interrupt (EXTI15_10) configured here keeps firing none stop. Most other questions about this same topic indicate that the respective EXTI_PR pending bit needs to be cleared in the ISR. ...
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ESP8266 vs ESP32 and WakeUp vs Reset

Maybe it's my fault but I kinda dislike the design of the ESP8266 when it comes to wakeup from deep sleep via an interrupt. AFAIK (without an external circuit) the ESP8266 can not distinct between a ...
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Partially functioning code of stm32f407vg board to toggle leds using a push button as an external interrupt

I have written a simple code using CMSIS library functions of Stm32 to blink one built-in led during normal operation and another one when an external interrupt is generated by an interfaced push ...
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digispark + pcf8563 RTC interrupt not working

I have PCF8563 WAVESHARE board connected to DIGISPARK via I2C. Here is the code: ...
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Can't use the Wake-on-Motion functionality of an MPU9250 with STM32

Hi there :) I'm trying to use the Wake-on-Motion functionality of this particular MEMS (MPU9250) with my STM32L152C-Discovery board: if the MPU9250 sense a motion, the INT pin will be high. To achieve ...
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STM32 EXTI does not trigger interrupt

I am working on a device with a button that is supposed to turn it on (when pressed briefly) and off (when held longer). The MCU is an STM32L432. The button is connected to PB0. I want to use EXTI as ...
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Connecting Volt-Free probes

This might be a too silly a question to ask, but I am working with the volt-free probes for the first time. I have a probe TL2 probe that has 4 wires. The user manual states that, For ‘TL2’ ...