nRF52840 DK, implementing Board Button event handler, but no response on button press.

RE: nRF52840 DK, implementing Board Button event handler, but no response on button press.

Paarth_Ved23 — Sat, 12 Sep 2020 21:57:38 GMT

Hi again,

Thanks for the help, I was following a tutorial for creating a custom service and characteristic. I ll have a look at the code, thanks a lot again for this!

Regards,

Paarth

RE: nRF52840 DK, implementing Board Button event handler, but no response on button press.

rmptxf — Sat, 12 Sep 2020 21:49:53 GMT

Hi Paarth_Ved23,

Sorry for the delay.

Well, you have a lot of issues in your ble service and characteristics. And I think this is where the issue come from.

I have fixed lot of issues there, also added a function to get the SOC temperature and send it over the temperature characteristic. Also added another characteristic, I called it the command char, it can be used to send commands from the central to the application.

The temperature char has the notify and the read property enabled, and can be used to send temperature values to the connected and subscribed central device.

The command char has the write property enabled, and can be used to receive data from the central device.

Try to use the UART, to see the application logging.

Please find the project files in this github repos.

Best regards,

rmptxf

RE: nRF52840 DK, implementing Board Button event handler, but no response on button press.

Simonr — Thu, 10 Sep 2020 10:47:05 GMT

Hi Paarth

What pins are your buttons (1-4) configured to? The onboard buttons on the nRF52840 DK are connected to pins P0.11, P0.12, P0.24, and P0.25.

Best regards,

Simon

RE: nRF52840 DK, implementing Board Button event handler, but no response on button press.

Paarth_Ved23 — Tue, 08 Sep 2020 07:56:34 GMT

Sure, i have added to the ble_app_template example, here is the main.c:

devzone.nordicsemi.com/.../84216.main.c

2. our_service.c: For a custom service and characteristics:

devzone.nordicsemi.com/.../6116.our_5F00_service.c

3. our_service.h: Header for custom service and characteristics:

devzone.nordicsemi.com/.../5633.our_5F00_service.h

Thanks again,

Paarth

RE: nRF52840 DK, implementing Board Button event handler, but no response on button press.

rmptxf — Mon, 07 Sep 2020 11:47:27 GMT

Hi,

Would you mind sending your project files here, or email them. To look into the issue ?

Best regards,

RE: nRF52840 DK, implementing Board Button event handler, but no response on button press.

Paarth_Ved23 — Mon, 07 Sep 2020 11:42:37 GMT

Hi,

The bsp_event_handler is handling BSP_EVENT_SLEEP, BSP_EVENT_DISCONNECT and BSP_EVENT_WHITELIST_OFF.

[quote userid="93005" url="~/f/nordic-q-a/65624/nrf52840-dk-implementing-board-button-event-handler-but-no-response-on-button-press/268246"]ou're using the nRF logging. Is the uart logging already working ?[/quote]

I am only using the nRF logs for debugging.

Thanks again,

Paarth

RE: nRF52840 DK, implementing Board Button event handler, but no response on button press.

rmptxf — Mon, 07 Sep 2020 09:52:31 GMT

Hi,

How do you check whether a button is responding or not ? I mean, in the code snippet you provided, you're using the nRF logging. Is the uart logging already working ?

What bsp events the bsp_event_handler is used for ? for handling the buttons events too ?

regards,

rmptxf

RE: nRF52840 DK, implementing Board Button event handler, but no response on button press.

Paarth_Ved23 — Mon, 07 Sep 2020 07:30:28 GMT

Hi,

Thanks for your response, I tried to implement it using the code snippets you have provided. But still no response on button press. I have tried the following:

1. Changed the button_event_handler as per the above.

2. Changed the app_button_cfg_t structure to as defined above

3. Called timer_init() before buttons_init()

4. BUTTON_ENABLED was already set.

Also, as a footnote, I am implementing this button handler along with a bsp_event_handler already defined, would it be affecting this handler or are they completely independent? Please let me know.

Thanks again,

Paarth

RE: nRF52840 DK, implementing Board Button event handler, but no response on button press.

rmptxf — Sun, 06 Sep 2020 23:41:06 GMT

Hi Paarth_Ved23,

Here is a better way to do it!

#define UART_PRINTING_ENABLED   // comment it to disable the uart logging

static void button_event_handler(uint8_t pin_no, uint8_t button_action)
{
  ret_code_t err_code;

  switch(pin_no)
  {
   case BUTTON_1:
     if(button_action == APP_BUTTON_PUSH) {
        #ifdef UART_PRINTING_ENABLED
        NRF_LOG_INFO("button1 pressed.");
        #endif
     }
     else if(button_action == APP_BUTTON_RELEASE) {
        #ifdef UART_PRINTING_ENABLED
        NRF_LOG_INFO("button1 released.");
        #endif
     }
     break;

   case BUTTON_2:
     if(button_action == APP_BUTTON_PUSH) {
        #ifdef UART_PRINTING_ENABLED
        NRF_LOG_INFO("button2 pressed.");
        #endif
     }
     else if(button_action == APP_BUTTON_RELEASE) {
        #ifdef UART_PRINTING_ENABLED
        NRF_LOG_INFO("button2 released.");
        #endif
     }
     break;

   case BUTTON_3:
     if(button_action == APP_BUTTON_PUSH) {
        #ifdef UART_PRINTING_ENABLED
        NRF_LOG_INFO("button3 pressed.");
        #endif
     }
     else if(button_action == APP_BUTTON_RELEASE) {
        #ifdef UART_PRINTING_ENABLED
        NRF_LOG_INFO("button3 released.");
        #endif
     }
     break;

   case BUTTON_4:
     if(button_action == APP_BUTTON_PUSH) {
        #ifdef UART_PRINTING_ENABLED
        NRF_LOG_INFO("button4 pressed.");
        #endif
     }
     else if(button_action == APP_BUTTON_RELEASE) {
        #ifdef UART_PRINTING_ENABLED
        NRF_LOG_INFO("button4 released.");
        #endif
     }
     break;
     default:
        return; // no implementation needed
  }

}

/**@brief Function for buttons configuration.
 *
 */
static const app_button_cfg_t app_buttons[BUTTONS_NUMBER] = 
{
// BUTTONS_NUMBER,
// BUTTON_PIN,
// BUTTONS_ACTIVE_STATE,
// BUTTON_PULL,
// are all declared in your components/boards/Ppca10056.h file

    {BUTTON_1, BUTTONS_ACTIVE_STATE, BUTTON_PULL, button_event_handler},
    {BUTTON_2, BUTTONS_ACTIVE_STATE, BUTTON_PULL, button_event_handler},
    {BUTTON_3, BUTTONS_ACTIVE_STATE, BUTTON_PULL, button_event_handler},
    {BUTTON_4, BUTTONS_ACTIVE_STATE, BUTTON_PULL, button_event_handler}
}; 

/**@brief Function for initializing the buttons with the app_button library.
 *
 */
 void buttons_init(){

    ret_code_t  err_code;                        
// BUTTONS_NUMBER  is declared in your components/boards/Ppca10056.h file
    err_code = app_button_init((app_button_cfg_t *)app_buttons,
                                                BUTTONS_NUMBER,
                                         BUTTON_DETECTION_TIME);
    APP_ERROR_CHECK(err_code);

    err_code = app_button_enable();
    APP_ERROR_CHECK(err_code);

}

Make sure you initialize the timer before calling the buttons_init() in the main.

/**
 *@brief Function for initialising the timers. 
 * It is necessary for the buttons to work when using the app_button library. 
 */
static void timers_init(void)
{
    // Initialize timer module.
    ret_code_t err_code = app_timer_init();
    APP_ERROR_CHECK(err_code);
}

    timers_init();
    leds_init();
    buttons_init();

Also make sure to enable the app button module in the sdk_config.h file.

// <q> BUTTON_ENABLED  - Enables Button module
 

#ifndef BUTTON_ENABLED
#define BUTTON_ENABLED 1
#endif

And here is 4 key keyboard based off the nRF52840-DK. You can test it, or just re-use the button handling part for your case.

The github repos

Best regards,

rmptxf