zmk/app/src/behaviors/behavior_key_press.c

/*
 * Copyright (c) 2020 Peter Johanson <peter@peterjohanson.com>
 *
 * 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>

LOG_MODULE_DECLARE(zmk, CONFIG_ZMK_LOG_LEVEL);

struct behavior_key_press_config {
  u8_t usage_page;
};
struct behavior_key_press_data { };

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

static int on_keymap_binding_pressed(struct device *dev, u32_t position, u32_t keycode, u32_t _)
{
  const struct behavior_key_press_config *cfg = dev->config_info;
  struct keycode_state_changed *ev;
  LOG_DBG("position %d usage_page 0x%02X keycode 0x%02X", position, cfg->usage_page, keycode);

  ev = new_keycode_state_changed();
  ev->usage_page = cfg->usage_page;
  ev->keycode = keycode;
  ev->state = true;
  return ZMK_EVENT_RAISE(ev);
}

static int on_keymap_binding_released(struct device *dev, u32_t position, u32_t keycode, u32_t _)
{
  const struct behavior_key_press_config *cfg = dev->config_info;
  struct keycode_state_changed *ev;
  LOG_DBG("position %d usage_page 0x%02X keycode 0x%02X", position, cfg->usage_page, keycode);

  ev = new_keycode_state_changed();
  ev->usage_page = cfg->usage_page;
  ev->keycode = keycode;
  ev->state = false;
  return ZMK_EVENT_RAISE(ev);
}

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) \
  static const struct behavior_key_press_config behavior_key_press_config_##n = { \
    .usage_page = DT_INST_PROP(n, usage_page) \
  }; \
  static struct behavior_key_press_data behavior_key_press_data_##n; \
  DEVICE_AND_API_INIT(behavior_key_press_##n, DT_INST_LABEL(n), behavior_key_press_init, \
                      &behavior_key_press_data_##n, \
                      &behavior_key_press_config_##n, \
                      APPLICATION, CONFIG_KERNEL_INIT_PRIORITY_DEFAULT, \
                      &behavior_key_press_driver_api);

DT_INST_FOREACH_STATUS_OKAY(KP_INST)