Hi all,

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I have a redox keyboard and I'm trying to setup QMK. I have basic functionality working, but I'm trying to achieve the following :

1. Use a key to act as a layer modifier on hold, and use the same key to toggle to a new layer when tapped.
2. I'd like to send the "c" keycode when a tap a key, and send the "ç" keycode when I hold the same key. I've tried adding this function to keymap.c

​

#define TAPPING_TERM 200

bool process_record_user(uint16_t keycode, keyrecord_t *record) {
    switch (keycode) {
        case FOO:
            if (record->tap.count && record->event.pressed) {
                tap_code16(FR_CCED);
            } else if (record->event.pressed) {
                tap_code16(FR_C);
            }
            return false;
    }
    return true;
}

When I hit "c", I get the letter as expected, but nothing happens when I hold the same key.

What am I doing wrong?

​

Thanks

​

EDIT : Got it working! Thanks for everyone's help.

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1) I used tapping toggle (TT) to get QMK to change layer whilst holding a key, and toggle to a layer when tapping the same key. To get this to work properly, I had to set "#define TAPPING_TOGGLE 1" in config.h because the default value is 5 taps to toggle to another layer, and set KC_TRNS in the same key location on the toggle destination layer as the original layer, so that tapping the same key brings you back to the original one correctly.

​

2) Followed the example code here : https://getreuer.info/posts/keyboards/triggers/index.html#tap-vs.-long-press

#define CUST_TAP_MOD_C LT(0, FR_C)

static bool process_tap_or_long_press_key(
    keyrecord_t* record, uint16_t long_press_keycode) {
  if (record->tap.count == 0) {  // Key is being held.
    if (record->event.pressed) {
      tap_code16(long_press_keycode);
    }
    return false;  // Skip default handling.
  }
  return true;  // Continue default handling.
}

bool process_record_user(uint16_t keycode, keyrecord_t* record) {
  switch (keycode) {
    case CUST_TAP_MOD_C:  // C on tap, ç on hold
      return process_tap_or_long_press_key(record, FR_CCED);
  }

  return true;
}

​