Increment Counter on Button Clicked

RE: Increment Counter on Button Clicked

Rihab — Fri, 03 Dec 2021 11:28:27 GMT

thank you for you recommendation haakonsh
I made it through with your help
here's my output from the result
thank you very much
very grateful

***************Button pressed at Number of cycle : 43
+++++++++++++++++Get BME280 data
temp: 21.210000; press: 100.595343; humidity: 39.749023
-----------------Get MPU6050 data
[0:02:54.717]:95158.9 Cel
  accel 210000.069375 94622.000021 210000.000100 m/s/s
  gyro  595343.000039 0.000000 210000.069375 rad/s
***************Button pressed at Number of cycle : 44
+++++++++++++++++Get BME280 data
temp: 21.210000; press: 100.595343; humidity: 39.749023
-----------------Get MPU6050 data
[0:02:55.158]:95158.9 Cel
  accel 210000.069375 94622.000021 210000.000100 m/s/s
  gyro  595343.000039 0.000000 210000.069375 rad/s
***************Button pressed at Number of cycle : 45
+++++++++++++++++Get BME280 data
temp: 21.240000; press: 100.596410; humidity: 40.249023
-----------------Get MPU6050 data
[0:02:55.365]:95158.9 Cel
  accel 240000.069375 94622.000021 240000.000100 m/s/s
  gyro  596410.000040 0.000000 240000.069375 rad/s

RE: Increment Counter on Button Clicked

haakonsh — Fri, 03 Dec 2021 09:15:40 GMT

Hey Rihab,

You are very close, but you need to study the programming concept of scope and how it affects variables. See https://www.tutorialspoint.com/cprogramming/c_scope_rules.htm.

If you want to access the counter variable outside the button_pressed function you need to declare it as a global variable.

or, if you only want to access the counter variable inside the function, you need to declare it as a static variable in order to keep its state in memory each time the button_pressed function is called. See https://www.tutorialspoint.com/static-variables-in-c.

RE: Increment Counter on Button Clicked

Rihab — Fri, 03 Dec 2021 08:57:35 GMT

someone can help me please
is anybody here

RE: Increment Counter on Button Clicked

Rihab — Thu, 02 Dec 2021 12:37:03 GMT

Hello Community
i'm currently trying to increment a counter every time the button is pressed
the counter is considered like the number of cycle
well i added some modification to my code to do this function

     int on_click = 0;
        while(gpio_pin_get_dt(&button) != true ) {
	    on_click++;
        printk("Number of cycle : %d\n", on_click);
        k_msleep(SLEEP_TIME_MS);
        }

this function is part of my project
and whole project role is :
0-button pressed
1-display BME280 values
2-display MPU6050 values
and now i'm trying to add the number of cycle which means technically how many times the button was pressed
when i try to view the result on my debug Terminal
it only displays the number of cycle and it doesn't display the values of the other 2 sensors
and then 5 sec later it stops and it displays the disassembly window on the right just like below

can anyone help me fix this please

please if you know what is causing this tell me as soon as you can
thank you in advance

Kindly,
Rihab

RE: Increment Counter on Button Clicked

Rihab — Tue, 30 Nov 2021 12:49:25 GMT

i didn't really understand,
can you give me a little more details please

RE: Increment Counter on Button Clicked

haakonsh — Tue, 30 Nov 2021 12:45:56 GMT

Then you need to declare a global variable and increment that instead of/in addition to incrementing the global variable.

RE: Increment Counter on Button Clicked

Rihab — Tue, 30 Nov 2021 12:26:43 GMT

for now the button is returning the hardware clock up-counter
so i'm aware of when it's pressed
i think a software implementation will suffice

RE: Increment Counter on Button Clicked

Rihab — Tue, 30 Nov 2021 12:24:55 GMT

i already have the hardware button i need to make a counter each time it's pressed
to reply to your question i think i need both

RE: Increment Counter on Button Clicked

haakonsh — Tue, 30 Nov 2021 12:12:30 GMT

Do you need a HW counter or will a SW counter suffice?