3fe2acc2d1
* Make it easier to use *just* event payloads by defining the data, and then having event manager macros generate "wrapper structs" * Improve is_*/cast_* APIs to hide details of full event struct. * Create `zmk_event_t` typedef to pass to event handlers. * Bring event names inline w/ consistent `zmk_` prefix.
96 lines
No EOL
2.1 KiB
C
96 lines
No EOL
2.1 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 <init.h>
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#include <device.h>
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#include <devicetree.h>
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#include <logging/log.h>
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LOG_MODULE_DECLARE(zmk, CONFIG_ZMK_LOG_LEVEL);
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#include <drivers/display.h>
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#include <lvgl.h>
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#include <zmk/event_manager.h>
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#include <zmk/events/activity_state_changed.h>
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#include <zmk/display/status_screen.h>
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#define ZMK_DISPLAY_NAME CONFIG_LVGL_DISPLAY_DEV_NAME
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static const struct device *display;
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static lv_obj_t *screen;
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__attribute__((weak)) lv_obj_t *zmk_display_status_screen() { return NULL; }
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void display_tick_cb(struct k_work *work) {
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lv_tick_inc(10);
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lv_task_handler();
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}
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K_WORK_DEFINE(display_tick_work, display_tick_cb);
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void display_timer_cb() { k_work_submit(&display_tick_work); }
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K_TIMER_DEFINE(display_timer, display_timer_cb, NULL);
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static void start_display_updates() {
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display_blanking_off(display);
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k_timer_start(&display_timer, K_MSEC(10), K_MSEC(10));
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}
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static void stop_display_updates() {
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display_blanking_on(display);
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k_timer_stop(&display_timer);
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}
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int zmk_display_init() {
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LOG_DBG("");
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display = device_get_binding(ZMK_DISPLAY_NAME);
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if (display == NULL) {
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LOG_ERR("Failed to find display device");
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return -EINVAL;
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}
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screen = zmk_display_status_screen();
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if (screen == NULL) {
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LOG_ERR("No status screen provided");
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return 0;
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}
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lv_scr_load(screen);
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lv_task_handler();
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start_display_updates();
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LOG_DBG("");
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return 0;
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}
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int display_event_handler(const zmk_event_t *eh) {
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struct zmk_activity_state_changed *ev = cast_zmk_activity_state_changed(eh);
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switch (ev->state) {
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case ZMK_ACTIVITY_ACTIVE:
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start_display_updates();
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break;
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case ZMK_ACTIVITY_IDLE:
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case ZMK_ACTIVITY_SLEEP:
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stop_display_updates();
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break;
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default:
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LOG_WRN("Unhandled activity state: %d", ev->state);
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return -EINVAL;
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}
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return 0;
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}
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ZMK_LISTENER(display, display_event_handler);
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ZMK_SUBSCRIPTION(display, zmk_activity_state_changed); |