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/*
* Copyright (c) 2020 The ZMK Contributors
*
* SPDX-License-Identifier: MIT
*/
#include <device.h>
#include <init.h>
#include <usb/usb_device.h>
#include <usb/class/usb_hid.h>
#include <zmk/hid.h>
#include <zmk/keymap.h>
#include <zmk/event_manager.h>
#include <zmk/events/usb_conn_state_changed.h>
LOG_MODULE_DECLARE(zmk, CONFIG_ZMK_LOG_LEVEL);
static enum usb_dc_status_code usb_status = USB_DC_UNKNOWN;
static void raise_usb_status_changed_event(struct k_work *_work) {
ZMK_EVENT_RAISE(new_zmk_usb_conn_state_changed(
(struct zmk_usb_conn_state_changed){.conn_state = zmk_usb_get_conn_state()}));
}
K_WORK_DEFINE(usb_status_notifier_work, raise_usb_status_changed_event);
enum usb_dc_status_code zmk_usb_get_status() { return usb_status; }
enum zmk_usb_conn_state zmk_usb_get_conn_state() {
LOG_DBG("state: %d", usb_status);
switch (usb_status) {
case USB_DC_SUSPEND:
case USB_DC_CONFIGURED:
return ZMK_USB_CONN_HID;
case USB_DC_DISCONNECTED:
case USB_DC_UNKNOWN:
return ZMK_USB_CONN_NONE;
default:
return ZMK_USB_CONN_POWERED;
}
}
void usb_status_cb(enum usb_dc_status_code status, const uint8_t *params) {
usb_status = status;
k_work_submit(&usb_status_notifier_work);
};
static int zmk_usb_init(const struct device *_arg) {
int usb_enable_ret;
usb_enable_ret = usb_enable(usb_status_cb);
if (usb_enable_ret != 0) {
LOG_ERR("Unable to enable USB");
return -EINVAL;
}
return 0;
}
SYS_INIT(zmk_usb_init, APPLICATION, CONFIG_ZMK_USB_INIT_PRIORITY);