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feat: only send HID reports to one endpoint

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Added some utility functions and an event for tracking the state of the
USB connection.

Updated endpoints.c to select a single endpoint to send HID reports to
based on the status of the USB and BLE connections. Partially fixes #206.

Future commits will add a user setting to control which endpoint is used if
both USB and BLE are ready.
This commit is contained in:
Joel Spadin
2020-10-11 17:03:21 -05:00
parent dfb69d8727
commit 1d369ffa73
7 changed files with 190 additions and 45 deletions
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20
app/include/zmk/events/usb-conn-state-changed.h Normal file
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@@ -0,0 +1,20 @@
/*
* Copyright (c) 2020 The ZMK Contributors
*
* SPDX-License-Identifier: MIT
*/
#pragma once
#include <zephyr.h>
#include <usb/usb_device.h>
#include <zmk/event-manager.h>
#include <zmk/usb.h>
struct usb_conn_state_changed {
struct zmk_event_header header;
enum zmk_usb_conn_state conn_state;
};
ZMK_EVENT_DECLARE(usb_conn_state_changed);

12
app/include/zmk/usb.h
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@@ -12,8 +12,18 @@
#include <zmk/keys.h>
#include <zmk/hid.h>
enum zmk_usb_conn_state {
ZMK_USB_CONN_NONE,
ZMK_USB_CONN_POWERED,
ZMK_USB_CONN_HID,
};
enum usb_dc_status_code zmk_usb_get_status();
enum zmk_usb_conn_state zmk_usb_get_conn_state();
static inline bool zmk_usb_is_powered() { return zmk_usb_get_conn_state() != ZMK_USB_CONN_NONE; }
static inline bool zmk_usb_is_hid_ready() { return zmk_usb_get_conn_state() == ZMK_USB_CONN_HID; }
#ifdef CONFIG_ZMK_USB
int zmk_usb_hid_send_report(u8_t *report, size_t len);
int zmk_usb_hid_send_report(const u8_t *report, size_t len);
#endif /* CONFIG_ZMK_USB */