nRF51822 HID example - delay between characters

RE: nRF51822 HID example - delay between characters

Håkon Alseth — Wed, 27 Nov 2013 08:26:51 GMT

Totally agree. I will report that as an feature improvement internally.

-Håkon

RE: nRF51822 HID example - delay between characters

Wobs — Tue, 26 Nov 2013 20:39:21 GMT

Thanks, It was the lack of pullup! To my defense, I kind of expected that there was a proper pullup on the button. :)

RE: nRF51822 HID example - delay between characters

Håkon Alseth — Tue, 26 Nov 2013 15:23:52 GMT

Hi,

The example is set up to be a bit slow. As you state, it will send one-and-one character for each keypress. For each keypress you send, you will also send a key-release (only '0').

What you can do to make it go a bit faster is to reduce the button-detection delay (debouncer) via this define: BUTTON_DETECTION_DELAY APP_TIMER_TICKS(10, APP_TIMER_PRESCALER)

Also, since this example does not use pull on the buttons, you should add this under the function "buttons_init":

    static app_button_cfg_t buttons[] =
    {
        {KEY_PRESS_BUTTON_PIN_NO,       false, NRF_GPIO_PIN_PULLUP, button_event_handler},
        {BONDMNGR_DELETE_BUTTON_PIN_NO, false, NRF_GPIO_PIN_NOPULL, NULL}
    };

Best regards Håkon

RE: nRF51822 HID example - delay between characters

Wobs — Tue, 26 Nov 2013 14:46:35 GMT

Should I post a video to clarify my point? I'd appreciate a little hand holding to figure out what causes this.