258 lines
7.1 KiB
C
258 lines
7.1 KiB
C
/*
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* The MIT License (MIT)
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*
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* Copyright (c) 2019 Ha Thach (tinyusb.org)
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*
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*/
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include "bsp/board.h"
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#include "tusb.h"
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#include "usb_descriptors.h"
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//--------------------------------------------------------------------+
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// MACRO CONSTANT TYPEDEF PROTYPES
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//--------------------------------------------------------------------+
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/* Blink pattern
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* - 250 ms : device not mounted
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* - 1000 ms : device mounted
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* - 2500 ms : device is suspended
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*/
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enum {
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BLINK_NOT_MOUNTED = 250,
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BLINK_MOUNTED = 1000,
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BLINK_SUSPENDED = 2500,
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};
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static uint32_t blink_interval_ms = BLINK_NOT_MOUNTED;
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void led_blinking_task(void);
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void hid_task(void);
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/*------------- MAIN -------------*/
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int main(void)
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{
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board_init();
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// init device stack on configured roothub port
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tud_init(BOARD_TUD_RHPORT);
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while (1)
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{
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tud_task(); // tinyusb device task
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led_blinking_task();
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hid_task();
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}
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return 0;
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}
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//--------------------------------------------------------------------+
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// Device callbacks
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//--------------------------------------------------------------------+
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// Invoked when device is mounted
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void tud_mount_cb(void)
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{
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blink_interval_ms = BLINK_MOUNTED;
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}
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// Invoked when device is unmounted
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void tud_umount_cb(void)
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{
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blink_interval_ms = BLINK_NOT_MOUNTED;
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}
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// Invoked when usb bus is suspended
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// remote_wakeup_en : if host allow us to perform remote wakeup
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// Within 7ms, device must draw an average of current less than 2.5 mA from bus
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void tud_suspend_cb(bool remote_wakeup_en)
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{
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(void) remote_wakeup_en;
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blink_interval_ms = BLINK_SUSPENDED;
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}
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// Invoked when usb bus is resumed
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void tud_resume_cb(void)
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{
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blink_interval_ms = BLINK_MOUNTED;
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}
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//--------------------------------------------------------------------+
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// USB HID
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//--------------------------------------------------------------------+
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// Every 10ms, we will sent 1 report for each HID profile (keyboard, mouse etc ..)
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// tud_hid_report_complete_cb() is used to send the next report after previous one is complete
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void hid_task(void)
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{
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// Poll every 10ms
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const uint32_t interval_ms = 10;
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static uint32_t start_ms = 0;
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if ( board_millis() - start_ms < interval_ms) return; // not enough time
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start_ms += interval_ms;
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uint32_t const btn = board_button_read();
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if ( tud_suspended() && btn )
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{
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// Wake up host if we are in suspend mode
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// and REMOTE_WAKEUP feature is enabled by host
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tud_remote_wakeup();
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}
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else
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{
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// keyboard interface
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if ( tud_hid_n_ready(ITF_NUM_KEYBOARD) )
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{
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// used to avoid send multiple consecutive zero report for keyboard
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static bool has_keyboard_key = false;
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uint8_t const report_id = 0;
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uint8_t const modifier = 0;
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if ( btn )
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{
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uint8_t keycode[6] = { 0 };
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keycode[0] = HID_KEY_ARROW_RIGHT;
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tud_hid_n_keyboard_report(ITF_NUM_KEYBOARD, report_id, modifier, keycode);
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has_keyboard_key = true;
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}else
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{
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// send empty key report if previously has key pressed
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if (has_keyboard_key) tud_hid_n_keyboard_report(ITF_NUM_KEYBOARD, report_id, modifier, NULL);
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has_keyboard_key = false;
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}
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}
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// mouse interface
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if ( tud_hid_n_ready(ITF_NUM_MOUSE) )
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{
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if ( btn )
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{
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uint8_t const report_id = 0;
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uint8_t const button_mask = 0;
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uint8_t const vertical = 0;
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uint8_t const horizontal = 0;
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int8_t const delta = 5;
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tud_hid_n_mouse_report(ITF_NUM_MOUSE, report_id, button_mask, delta, delta, vertical, horizontal);
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}
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}
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}
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}
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// Invoked when received SET_PROTOCOL request
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// protocol is either HID_PROTOCOL_BOOT (0) or HID_PROTOCOL_REPORT (1)
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void tud_hid_set_protocol_cb(uint8_t instance, uint8_t protocol)
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{
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(void) instance;
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(void) protocol;
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// nothing to do since we use the same compatible boot report for both Boot and Report mode.
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// TODO set a indicator for user
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}
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// Invoked when sent REPORT successfully to host
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// Application can use this to send the next report
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// Note: For composite reports, report[0] is report ID
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void tud_hid_report_complete_cb(uint8_t instance, uint8_t const* report, /*uint16_t*/ uint8_t len)
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{
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(void) instance;
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(void) report;
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(void) len;
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// nothing to do
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}
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// Invoked when received GET_REPORT control request
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// Application must fill buffer report's content and return its length.
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// Return zero will cause the stack to STALL request
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uint16_t tud_hid_get_report_cb(uint8_t instance, uint8_t report_id, hid_report_type_t report_type, uint8_t* buffer, uint16_t reqlen)
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{
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// TODO not Implemented
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(void) instance;
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(void) report_id;
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(void) report_type;
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(void) buffer;
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(void) reqlen;
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return 0;
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}
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// Invoked when received SET_REPORT control request or
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// received data on OUT endpoint ( Report ID = 0, Type = 0 )
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void tud_hid_set_report_cb(uint8_t instance, uint8_t report_id, hid_report_type_t report_type, uint8_t const* buffer, uint16_t bufsize)
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{
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(void) report_id;
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// keyboard interface
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if (instance == ITF_NUM_KEYBOARD)
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{
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// Set keyboard LED e.g Capslock, Numlock etc...
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if (report_type == HID_REPORT_TYPE_OUTPUT)
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{
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// bufsize should be (at least) 1
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if ( bufsize < 1 ) return;
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uint8_t const kbd_leds = buffer[0];
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if (kbd_leds & KEYBOARD_LED_CAPSLOCK)
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{
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// Capslock On: disable blink, turn led on
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blink_interval_ms = 0;
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board_led_write(true);
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}else
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{
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// Caplocks Off: back to normal blink
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board_led_write(false);
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blink_interval_ms = BLINK_MOUNTED;
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}
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}
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}
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}
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//--------------------------------------------------------------------+
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// BLINKING TASK
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//--------------------------------------------------------------------+
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void led_blinking_task(void)
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{
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static uint32_t start_ms = 0;
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static bool led_state = false;
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// blink is disabled
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if (!blink_interval_ms) return;
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// Blink every interval ms
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if ( board_millis() - start_ms < blink_interval_ms) return; // not enough time
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start_ms += blink_interval_ms;
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board_led_write(led_state);
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led_state = 1 - led_state; // toggle
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}
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