Start stop button ?

[RixtronixLAB]

Dear Members,

How can I make a start/stop button with 1 button ?

Here's my handler :

void bsp_event_handler(bsp_event_t event)
{
    switch (event)
    {
        case BSP_EVENT_SLEEP:
            nrf_pwr_mgmt_shutdown(NRF_PWR_MGMT_SHUTDOWN_GOTO_SYSOFF);
            break;
				
				 case BSP_EVENT_KEY_0:
					 NRF_LOG_INFO("BSP_EVENT_KEY 0 PUSH ON\n");
            if (actual_state != BSP_INDICATE_FIRST)
                actual_state--;
						    //NRF_LOG_INFO("BSP_EVENT_KEY 0 PUSH ON\n"); //2Mar22 Rixtronix LAB
            else
                actual_state = BSP_INDICATE_LAST;
						    NRF_LOG_INFO("BSP_EVENT_KEY 0 PUSH OFF\n"); //2Mar22 Rixtronix LAB
            break;
            ............

Any clues ?

Kind regards,

Rixtronix LAB

[Karl Ylvisaker]

Hello,

I am not sure what you are doing with the actual_state and BSP_INDICATE_FIRST, but perhaps you could use the bsp_event_to_button_action_assign function to assign a bsp event like BSP_EVENT_KEY_0 to a buttonpress, and then in the handler check if the state is either active or not, inverse it, and perform some other function?
Something similar to this:

#define STATE_ON 1
#define STATE_OFF 0
..
    case BSP_EVENT_KEY_0:
        if(state)
        {
            OFF_function();
            state = STATE_OFF;
        }
        else
        {
            ON_function();
            state = STATE_ON;
        }
..

Best regards,
Karl

[RixtronixLAB]

Hi Karl,

Thanks for the reply,

That's correct, how can I fix a bouncing button ? a delay ?

Regards,

Rixtronix LAB

[Karl Ylvisaker]

RixtronixLAB said:

Thanks for the reply,

No problem at all, I am happy to help!

RixtronixLAB said:

That's correct, how can I fix a bouncing button ? a delay ?

The bsp module has debouncing already has this since its using the app_button module, which has a detection delay implemented.
This is currently 50 ms, you could extend this to see if it resolves your issue, but usually 50 ms is enough for a regular pushbutton.

Best regards,
Karl

[RixtronixLAB]

Hi Karl,

How can I make power on and off in 1 button ?

Regards,

Rixtronix

[Karl Ylvisaker]

Hello,

You can follow the same procedure that I outlined earlier, without the conditional variable, to have it enter into SYSTEM_OFF sleep, and as part of this function you should setup the same button to enable it for wakeup.

Best regards,
Karl