STM32-Nucleo - Keil 5 IDE with CubeMX: Tutorial 2 - Push button

[asagk]

If you have an external push button, you add a resistor in series and a capacitor to refV (0V) to it, called "low pass filter", and you are done with the debouncing.

[dragosmakovei]

For toggling the pin you can also use this kind of Approach


//This toogle initialization means wether the led wil be on or off for the first press
bool toggle = true;


if(HAL_GPIO_ReadPin(GPIOC, GPIO_PIN_13) == GPIO_PIN_RESET)
{
toggle = !toggle;


//This delay here because the frequency of the board is so high so you need time to release your finger.
//Else you wouldn't be able to see any change of the led
HAL_Delay(100);


HAL_GPIO_WritePin(GPIOA, GPIO_PIN_5, toggle);
}

[halradhi]

Thank you very much for the great tutorial.
Small note: I believe there is no need for the "debouncing code" since the push button in the nucleo f401re board is attached to a pullup resistor (4K7) and 100nF capacitor.
Keep up the good work (Y)

[guruG]

Sir, i have a question, that whether in industry, where there are a lot of sensors and actuators, doe they use HAL library, or bare metal, or both are used according to application demand?

[sudhansumtripathy]

hi, thank you for the video, how many ports are there and how to know which pin is in which port

[Fabio_Denaro]

Hi, Thx for this tutorial. I don't have clear why do you remove the code of the Rcc oscillator?

[搁这文盲老领导]

I think the if in line 118 is not necessary

[samiratalebi]

Hi,
Thx for this tutorial. I have done this but i have error with If...else . That says : else is error Syntax. I'm new with programming and i cannot find the reason.

[yashwanthl]

Nice video
User bottom is connected to pin 13 right

I want to know what is the pin number of reset bottom in stm 32 nucleo

[artiny]

helo, very good tutorials, but I have question, why dont work if I want the first example to try out....but in default state I want to have the LED in OFF position and only ON(LED) when I push the button

[stevergr]

Please work on the audio quality. It’s very hard to understand.

[aeonsalgado]

What is GPIOC? Where is explained where that part of the hadware it is?

[rathtanaduong]

Is there a documentation that I can refer to for the syntax when writing code? Thanks

[omaralshishani]

thank you, very useful video
keep up the good work

[sushantchauhan]

Hi
Can you please give the code of driver level without using HAL