How to use Keypad with STM32 || Keil || HAL || CubeMx

Рет қаралды 24,861

5 жыл бұрын

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Пікірлер: 47

@nithins1212 3 жыл бұрын

Many thanks for the tutorial! for people working on this code, make sure to include hal_delay(200) after the while loop statement in the read_keypad() function; helps for switch debouncing:) Also, make sure to use the Pull-up resistor for the 4 gpio inputs. These were some issues I faced.

@Hasnatabdulrehman Ай бұрын

Can you please explain how do I use pull-up resistors for GPIO inputs? I have done everything right but my keypad keeps showing wrong numbers upon pressing any key. For example, if I press 1, the lcd shows any random number. First I thought the keypad is faulty so I changed it but still the same problem.

@stefanoparlapiano445 Жыл бұрын

The code is available at the end of the page, at the beginner it was hard to find it, but all its there. Nice tutorial.

@Hasnatabdulrehman Ай бұрын

I have done everything right but my keypad keeps showing wrong numbers upon pressing any key. For example, if I press 1, the lcd shows any random number. First I thought the keypad is faulty so I changed it but still the same problem. PLEASE HELP!

@santhoshsethupathi6266 5 жыл бұрын

How to use stm32 nucleo with gsm module can you help me

@darioparrella8181 Жыл бұрын

where can I find the versione with interrupt ?

@MANNEPALLIPOOJITHE 6 ай бұрын

are you using arch linux sir

@pusatberk4193 5 жыл бұрын

Thanks I will share with my friends love stm

@paulnwoko4830 4 жыл бұрын

nice video. please make a tutorial on stm32 keypad with interrupt

@franciscotoapanta3926 4 жыл бұрын

did you use any resistor, or you connect it directly, or you put in pull up the columns?. thanks for the video

@ControllersTech 4 жыл бұрын

No i haven't used any resistor because the stm32 pins have weak pull up. So whenever you select a pin as input, you can use that pull up function. But you should use the pull up resistors just to be safe and sure

@Bunty793 3 жыл бұрын

you know it's the right guy when he's using Arch Linux

@balaji5384 3 жыл бұрын

very nice and clear

@trungvotthue 3 жыл бұрын

i read 1 when call read_keypad() and no push, how to change it to 'D'. Thanks

@ControllersTech 3 жыл бұрын

Use the if condition.. if (key == 0x01) key = 'D'

@nudratjawaria3753 Жыл бұрын

Hey, i was running simulation for this code, but i dont get the connections of LCD. i connected the keypad wires with PA0-PA7 but cant figure out how to connect 16x2.

@ControllersTech Жыл бұрын

Lcd is connected via the i2c using pcf8574

@nudratjawaria3753 Жыл бұрын

@@ControllersTechcan you please share your email, I wanna show you the simulation. It is not working

@infini6338 9 ай бұрын

will it make a major difference in the code if i use stm32 nucleo board?

@ControllersTech 9 ай бұрын

Nope.

@namrathasingh9502 4 жыл бұрын

i2c.lcd.h library, where can I find that library. Actually I am not getting in the place you have shown.

@ControllersTech 4 жыл бұрын

it's inside the src and inc folders..

@mujamilmukthar317 3 жыл бұрын

Even i do not find it in my workspace.... and more ovr, my toolchain ide remained disabled, so it was not mdk v5. I think it must have some connection to the problem i'm facing.

@ControllersTech 3 жыл бұрын

I'll check it again. You can download them from i2c lcd video also..

@nguyenthanhhaofficial2101 8 ай бұрын

Your video is showing instructions on an LCD screen, can you show me how to do it on an OLED screen? Please, can you help me!!!

@ControllersTech 8 ай бұрын

Whats there to show ? Instead of lcd, just send it to oled.

@user-ed1kx5xg9b 3 жыл бұрын

Hollo, I am wonder how to use your library in arduino IDE environment. I use arduino IDE to upload code to the STM32 microcontroller. Thank for your apply.

@ControllersTech 3 жыл бұрын

Use the Arduino code for Arduino IDE..

@user-ed1kx5xg9b 3 жыл бұрын

@@ControllersTech Arduino code I found from labrary is incompatible to STM32 microcontroller. This problem truely brothered me a lot, ha ha

@ControllersTech 3 жыл бұрын

Then use the stm32 as stm32 instead of turning it into Arduino 🙂

@user-ed1kx5xg9b 3 жыл бұрын

@@ControllersTech I don't understand what you mean

@user-ed1kx5xg9b 3 жыл бұрын

@@ControllersTech If you have free time, can I ask for your contact information like fb, maybe I can told you the detail information, thank you!!

@narendrasuryawanshi1708 Жыл бұрын

getting error to open given code link?? where exactly i get code??

@ControllersTech Жыл бұрын

Try now

@jesaiassanchez6447 3 жыл бұрын

hello how can i put 2 or more digits?

@ControllersTech 3 жыл бұрын

Just put the digits into the array and send it to the display

@sekudha 3 жыл бұрын

Watch his previous vids

@emregok5088 3 жыл бұрын

@@ControllersTech What are the changes we will make to the code ?

@ControllersTech 3 жыл бұрын

Don't clear the display after the key is printed. That's all

@emregok5088 3 жыл бұрын

@@ControllersTech which code for clear ?