91aa3378f3
* USB boot protocol support * Use a single definition of a boot report, used for regular reports in non-6KRO, and for rollover in all branches. * Handle gaps in the zmk report when producing a boot report in HKRO mode. For .example, if it was 8KRO, it would be possible to have the state 0 0 0 0 0 0 0 17 (by pressing 8 keys, and letting go of the first 7). Copying the first 6 bytes would not show up the single pressed key. * Disable usb status change and callback on SOF events: SOF events were introduced by the boot protocol changes, and required internally by Zephyr's idle support, but are unused within ZMK itself. Ignore them in the usb status callback. --------- Co-authored-by: Andrew Childs <lorne@cons.org.nz>
81 lines
2 KiB
C
81 lines
2 KiB
C
/*
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* Copyright (c) 2020 The ZMK Contributors
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*
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* SPDX-License-Identifier: MIT
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*/
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#include <zephyr/device.h>
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#include <zephyr/init.h>
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#include <zephyr/usb/usb_device.h>
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#include <zephyr/usb/class/usb_hid.h>
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#include <zmk/hid.h>
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#include <zmk/keymap.h>
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#include <zmk/event_manager.h>
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#include <zmk/events/usb_conn_state_changed.h>
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#include <zmk/usb_hid.h>
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LOG_MODULE_DECLARE(zmk, CONFIG_ZMK_LOG_LEVEL);
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static enum usb_dc_status_code usb_status = USB_DC_UNKNOWN;
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static void raise_usb_status_changed_event(struct k_work *_work) {
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ZMK_EVENT_RAISE(new_zmk_usb_conn_state_changed(
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(struct zmk_usb_conn_state_changed){.conn_state = zmk_usb_get_conn_state()}));
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}
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K_WORK_DEFINE(usb_status_notifier_work, raise_usb_status_changed_event);
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enum usb_dc_status_code zmk_usb_get_status() { return usb_status; }
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enum zmk_usb_conn_state zmk_usb_get_conn_state() {
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LOG_DBG("state: %d", usb_status);
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switch (usb_status) {
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case USB_DC_SUSPEND:
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case USB_DC_CONFIGURED:
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case USB_DC_RESUME:
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case USB_DC_CLEAR_HALT:
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case USB_DC_SOF:
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return ZMK_USB_CONN_HID;
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case USB_DC_DISCONNECTED:
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case USB_DC_UNKNOWN:
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return ZMK_USB_CONN_NONE;
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default:
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return ZMK_USB_CONN_POWERED;
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}
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}
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void usb_status_cb(enum usb_dc_status_code status, const uint8_t *params) {
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// Start-of-frame events are too frequent and noisy to notify, and they're
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// not used within ZMK
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if (status == USB_DC_SOF) {
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return;
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}
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#if IS_ENABLED(CONFIG_ZMK_USB_BOOT)
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if (status == USB_DC_RESET) {
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zmk_usb_hid_set_protocol(HID_PROTOCOL_REPORT);
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}
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#endif
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usb_status = status;
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k_work_submit(&usb_status_notifier_work);
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};
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static int zmk_usb_init(const struct device *_arg) {
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int usb_enable_ret;
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usb_enable_ret = usb_enable(usb_status_cb);
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if (usb_enable_ret != 0) {
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LOG_ERR("Unable to enable USB");
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return -EINVAL;
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}
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return 0;
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}
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SYS_INIT(zmk_usb_init, APPLICATION, CONFIG_ZMK_USB_INIT_PRIORITY);
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