1 files changed, 302 insertions, 0 deletions
diff --git a/tinyusb/examples/device/hid_composite/src/main.c b/tinyusb/examples/device/hid_composite/src/main.c
new file mode 100755
index 00000000..fd25e620
--- /dev/null
+++ b/tinyusb/examples/device/hid_composite/src/main.c
@@ -0,0 +1,302 @@
+/* 
+ * 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 <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+
+#include "bsp/board.h"
+#include "tusb.h"
+
+#include "usb_descriptors.h"
+
+//--------------------------------------------------------------------+
+// MACRO CONSTANT TYPEDEF PROTYPES
+//--------------------------------------------------------------------+
+
+/* Blink pattern
+ * - 250 ms  : device not mounted
+ * - 1000 ms : device mounted
+ * - 2500 ms : device is suspended
+ */
+enum  {
+  BLINK_NOT_MOUNTED = 250,
+  BLINK_MOUNTED = 1000,
+  BLINK_SUSPENDED = 2500,
+};
+
+static uint32_t blink_interval_ms = BLINK_NOT_MOUNTED;
+
+void led_blinking_task(void);
+void hid_task(void);
+
+/*------------- MAIN -------------*/
+int main(void)
+{
+  board_init();
+  tusb_init();
+
+  while (1)
+  {
+    tud_task(); // tinyusb device task
+    led_blinking_task();
+
+    hid_task();
+  }
+
+  return 0;
+}
+
+//--------------------------------------------------------------------+
+// Device callbacks
+//--------------------------------------------------------------------+
+
+// Invoked when device is mounted
+void tud_mount_cb(void)
+{
+  blink_interval_ms = BLINK_MOUNTED;
+}
+
+// Invoked when device is unmounted
+void tud_umount_cb(void)
+{
+  blink_interval_ms = BLINK_NOT_MOUNTED;
+}
+
+// Invoked when usb bus is suspended
+// remote_wakeup_en : if host allow us  to perform remote wakeup
+// Within 7ms, device must draw an average of current less than 2.5 mA from bus
+void tud_suspend_cb(bool remote_wakeup_en)
+{
+  (void) remote_wakeup_en;
+  blink_interval_ms = BLINK_SUSPENDED;
+}
+
+// Invoked when usb bus is resumed
+void tud_resume_cb(void)
+{
+  blink_interval_ms = BLINK_MOUNTED;
+}
+
+//--------------------------------------------------------------------+
+// USB HID
+//--------------------------------------------------------------------+
+
+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:
+    {
+      int8_t const delta = 5;
+
+      // no button, right + down, no scroll, no pan
+      tud_hid_mouse_report(REPORT_ID_MOUSE, 0x00, delta, delta, 0, 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);
+  }
+}
+
+// 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;
+      }
+    }
+  }
+}
+
+//--------------------------------------------------------------------+
+// BLINKING TASK
+//--------------------------------------------------------------------+
+void led_blinking_task(void)
+{
+  static uint32_t start_ms = 0;
+  static bool led_state = false;
+
+  // blink is disabled
+  if (!blink_interval_ms) return;
+
+  // Blink every interval ms
+  if ( board_millis() - start_ms < blink_interval_ms) return; // not enough time
+  start_ms += blink_interval_ms;
+
+  board_led_write(led_state);
+  led_state = 1 - led_state; // toggle
+}