Runtime keymap exploration.

behavior_key_press.c

/*
 * Copyright (c) 2020 The ZMK Contributors
 *
 * SPDX-License-Identifier: MIT
 */

#define DT_DRV_COMPAT zmk_behavior_key_press

#include <device.h>
#include <drivers/behavior.h>
#include <logging/log.h>

#include <zmk/event_manager.h>
#include <zmk/events/keycode_state_changed.h>
#include <zmk/behavior.h>

LOG_MODULE_DECLARE(zmk, CONFIG_ZMK_LOG_LEVEL);

static int behavior_key_press_init(const struct device *dev) { return 0; };

static int on_keymap_binding_pressed(struct zmk_behavior_binding *binding,
                                     struct zmk_behavior_binding_event event) {
    LOG_DBG("position %d keycode 0x%02X", event.position, binding->param1);
    return ZMK_EVENT_RAISE(
        zmk_keycode_state_changed_from_encoded(binding->param1, true, event.timestamp));
}

static int on_keymap_binding_released(struct zmk_behavior_binding *binding,
                                      struct zmk_behavior_binding_event event) {
    LOG_DBG("position %d keycode 0x%02X", event.position, binding->param1);
    return ZMK_EVENT_RAISE(
        zmk_keycode_state_changed_from_encoded(binding->param1, false, event.timestamp));
}

#if CONFIG_ZMK_RUNTIME_KEYMAPS

ZMK_BEHAVIOR_METADATA(key_press,
  "Key Press",
  ZMK_BINDING_PARAMS(ZMK_BINDING_PARAM_KEYCODE(), ZMK_BINDING_PARAM_NULL())
)
ZMK_BEHAVIOR_PROPS_METADATA(key_press);

static int behavior_key_press_metadata(struct zmk_behavior_metadata *metadata, struct zmk_behavior_props_metadata *props, uint32_t *len) {
   *props = key_press_props_metadata;
   *len = 0;
   *metadata = key_press_metadata;
}

#endif

static const struct behavior_driver_api behavior_key_press_driver_api = {
    .binding_pressed = on_keymap_binding_pressed, .binding_released = on_keymap_binding_released};

#define KP_INST(n)                                                                                 \
    ZMK_RUNTIME_METADATA_DEVICE_DT_DEFINE(n, behavior_key_press_metadata);                         \
    DEVICE_DT_INST_DEFINE(n, behavior_key_press_init, NULL, NULL, NULL, APPLICATION,               \
                          CONFIG_KERNEL_INIT_PRIORITY_DEFAULT, &behavior_key_press_driver_api);

DT_INST_FOREACH_STATUS_OKAY(KP_INST)