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- /*
- * The MIT License (MIT)
- *
- * Copyright (c) 2019 Ha Thach (tinyusb.org)
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this software and associated documentation files (the "Software"), to deal
- * in the Software without restriction, including without limitation the rights
- * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- * copies of the Software, and to permit persons to whom the Software is
- * furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
- * THE SOFTWARE.
- *
- */
-
- #include "bsp/board.h"
- #include "tusb.h"
-
- #include "config.h"
- #include "usb_descriptors.h"
- #include "usb_hid.h"
-
- // TODO
- extern int16_t delta_x, delta_y;
-
- static void send_hid_report(uint8_t report_id, uint32_t btn) {
- // skip if hid is not ready yet
- if ( !tud_hid_ready() ) return;
-
- switch(report_id) {
- case REPORT_ID_KEYBOARD:
- {
- // use to avoid send multiple consecutive zero report for keyboard
- static bool has_keyboard_key = false;
-
- if ( btn ) {
- uint8_t keycode[6] = { 0 };
- keycode[0] = HID_KEY_A;
-
- tud_hid_keyboard_report(REPORT_ID_KEYBOARD, 0, keycode);
- has_keyboard_key = true;
- } else {
- // send empty key report if previously has key pressed
- if (has_keyboard_key) tud_hid_keyboard_report(REPORT_ID_KEYBOARD, 0, NULL);
- has_keyboard_key = false;
- }
- }
- break;
-
- case REPORT_ID_MOUSE:
- {
- // no button, right + down, no scroll, no pan
- tud_hid_mouse_report(REPORT_ID_MOUSE, 0x00, -delta_x, -delta_y, 0, 0);
-
- // TODO
- delta_x = 0;
- delta_y = 0;
- }
- break;
-
- case REPORT_ID_CONSUMER_CONTROL:
- {
- // use to avoid send multiple consecutive zero report
- static bool has_consumer_key = false;
-
- if (btn) {
- // volume down
- uint16_t volume_down = HID_USAGE_CONSUMER_VOLUME_DECREMENT;
- tud_hid_report(REPORT_ID_CONSUMER_CONTROL, &volume_down, 2);
- has_consumer_key = true;
- } else {
- // send empty key report (release key) if previously has key pressed
- uint16_t empty_key = 0;
- if (has_consumer_key) tud_hid_report(REPORT_ID_CONSUMER_CONTROL, &empty_key, 2);
- has_consumer_key = false;
- }
- }
- break;
-
- case REPORT_ID_GAMEPAD:
- {
- // use to avoid send multiple consecutive zero report for keyboard
- static bool has_gamepad_key = false;
-
- hid_gamepad_report_t report = {
- .x = 0, .y = 0, .z = 0, .rz = 0, .rx = 0, .ry = 0,
- .hat = 0, .buttons = 0
- };
-
- if (btn) {
- report.hat = GAMEPAD_HAT_UP;
- report.buttons = GAMEPAD_BUTTON_A;
- tud_hid_report(REPORT_ID_GAMEPAD, &report, sizeof(report));
-
- has_gamepad_key = true;
- } else {
- report.hat = GAMEPAD_HAT_CENTERED;
- report.buttons = 0;
- if (has_gamepad_key) tud_hid_report(REPORT_ID_GAMEPAD, &report, sizeof(report));
- has_gamepad_key = false;
- }
- }
- break;
-
- default:
- break;
- }
- }
-
- // Every 10ms, we will sent 1 report for each HID profile (keyboard, mouse etc ..)
- // tud_hid_report_complete_cb() is used to send the next report after previous one is complete
- void hid_task(void) {
- // Poll every 10ms
- const uint32_t interval_ms = 10;
- static uint32_t start_ms = 0;
-
- if ( board_millis() - start_ms < interval_ms) return; // not enough time
- start_ms += interval_ms;
-
- uint32_t const btn = board_button_read();
-
- // Remote wakeup
- if ( tud_suspended() && btn ) {
- // Wake up host if we are in suspend mode
- // and REMOTE_WAKEUP feature is enabled by host
- tud_remote_wakeup();
- } else {
- // Send the 1st of report chain, the rest will be sent by tud_hid_report_complete_cb()
- //send_hid_report(REPORT_ID_KEYBOARD, btn);
- send_hid_report(REPORT_ID_MOUSE, btn);
- }
- }
-
- // Invoked when sent REPORT successfully to host
- // Application can use this to send the next report
- // Note: For composite reports, report[0] is report ID
- void tud_hid_report_complete_cb(uint8_t instance, uint8_t const* report, uint8_t len) {
- (void) instance;
- (void) len;
-
- uint8_t next_report_id = report[0] + 1;
-
- if (next_report_id < REPORT_ID_COUNT) {
- send_hid_report(next_report_id, board_button_read());
- }
- }
-
- // Invoked when received GET_REPORT control request
- // Application must fill buffer report's content and return its length.
- // Return zero will cause the stack to STALL request
- 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) {
- // TODO not Implemented
- (void) instance;
- (void) report_id;
- (void) report_type;
- (void) buffer;
- (void) reqlen;
-
- return 0;
- }
-
- // Invoked when received SET_REPORT control request or
- // received data on OUT endpoint ( Report ID = 0, Type = 0 )
- 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) {
- (void) instance;
-
- if (report_type == HID_REPORT_TYPE_OUTPUT) {
- // Set keyboard LED e.g Capslock, Numlock etc...
- if (report_id == REPORT_ID_KEYBOARD) {
- // bufsize should be (at least) 1
- if ( bufsize < 1 ) return;
-
- uint8_t const kbd_leds = buffer[0];
-
- if (kbd_leds & KEYBOARD_LED_CAPSLOCK) {
- // Capslock On: disable blink, turn led on
- //blink_interval_ms = 0;
- board_led_write(true);
- } else {
- // Caplocks Off: back to normal blink
- board_led_write(false);
- //blink_interval_ms = BLINK_MOUNTED;
- }
- }
- }
- }
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