How to turn on/off the user led by using an external button on a breadboard?

[Gnahore]

I'm using the nucleo-f302r8 and I want to turn on then turn of the user led (the ones on the stm32 board) thanks to a push-button on my personal breadboard. How to achieve this? 

Hardware : a nucleo-f302r8, a breadboard, a push-button arduino, 2 male-female wires

Sofware : STM32CubeIDE

[Stassen.C]

Hello Gnahore,

Assuming that you connected you push button to your nucleo-f302r8 (you can find a lot of tutorial online if you need), you can use the STM32cubeF3 found here.
In this cube package, you have a dedicated example on how to toggle a led using a push button in interrupt mode.
This should help you !

Regards,
Stassen

[Gnahore]

No it doesn't help. Here is my main.c file : /* USER CODE BEGIN Header *//** ******************************************* - Pastebin.com

[Stassen.C]

Gnahore,

Your link is not working here, could you please attach your code here or give me a working link to your project so that I can help?

Regards,
Stassen

[Gnahore]

I may have solved my issue by doing this : checking if I connected the right pin to the breadboard, enabled the right EXTI lines interrupts in the ioc file then remove the delay from HAL_GPIO_EXTI_Callback() by making a flag like showing in the following post :Interrupt Mode HAL Delay - STMicroelectronics Community

However the delay time is way too long. My led is on for more than 2000ms.. why is that?

[Stassen.C]

Gnahore,

You have a working example in STM32Cube_FW_F3_V1.11.4\Projects\STM32F302R8-Nucleo\Examples\GPIO\GPIO_EXTI project. In this example you will see that the green led is toggled through the blue push button on your nucleoF302r8.

You can use this code as a base. You just need to change the push button GPIO to yours and making sure it is correctly configured.

Regards,
Stassen

[Gnahore]

Stassen.C,

Thank you I didn't realized there were examples. I did something similar as the example however the example doesn't use HAL_Delay(). In my next step I won't use the inbuilt led anymore but a motor (with the x-nucleo-ihm08m1). I would like to turn the motor on by pressing my button (breadboard), let it run for 3s then stop by itself. I will need to use HAL_Delay() associated with EXTI interrupt

[Gnahore]

update : I don't need the delay anymore. All problem solved.

thanks

[Stassen.C]

Great to hear Gnahore!

Have a nice day and please if your question is answered, please close this topic by clicking "Accept as Solution".

Regards,
Stassen