HOW TO GET INPUT FROM GPIO?

[fenil.patel]

Hi,

    I want to get input from gpio from an external button. i try many syntaxes for getting input from gpio but nothing is work. 

i try 

nrf_gpio_pin_dir_get(12)

nrf_gpio_pin_sense_get(12)

nrf_gpio_pin_read(12)

i not get any output from it.

[awneil]

Have you looked at the examples in the SDK ?

[fenil.patel]

i look the bsp example. but nothing helped.

[Håkon Alseth]

Have you tried the "pin_change_int" example?

[fenil.patel]

i see the example but i want to increment variable continuously when an external button is pressed.

thank you.

[awneil]

while( true )
{
    if( button is pressed )
    {
        ++variable;
    }
}

[fenil.patel]

thank you

i know the loop

but i did not get if button is pressed or not i am trying to read pin state using nrf_gpio_pin_get(14);

but this not work.

if you have any suggestion let me know.

[awneil]

fenil.patel said:

nrf_gpio_pin_get(

So what does the documentation for that function tell you?

How about nrf_gpio_pin_read() ?

infocenter.nordicsemi.com/.../group__nrf__gpio__hal.html

[fenil.patel]

i do as you tell me.

nrf_gpio_cfg_input(01,NRF_GPIO_PIN_NOPULL);

SEGGER_RTT_printf(0,"status%d\n",nrf_gpio_pin_read(01));

i write like this but the status is printed 0 on segger rtt .

this not print high logic level.

thank you.

[awneil]

fenil.patel said:

i do as you tell me.

I didn't tell you anything; I asked you to study the documentation - have you done that?

fenil.patel said:

the status is printed 0

So what did you expect?

Again, what does the documentation tell you?

It's no use just randomly throwing function calls together - you need to understand what those functions do!

[fenil.patel]

i already read the documentation. this function give 1 if the logic level is high and 0 for logic level low.