1 files changed, 120 insertions, 0 deletions
diff --git a/protocol/pjrc/usb_keyboard.c b/protocol/pjrc/usb_keyboard.c
new file mode 100644
index 0000000000..e057c77fa1
--- /dev/null
+++ b/protocol/pjrc/usb_keyboard.c
@@ -0,0 +1,120 @@
+/* USB Keyboard Plus Debug Channel Example for Teensy USB Development Board
+ * http://www.pjrc.com/teensy/usb_keyboard.html
+ * Copyright (c) 2009 PJRC.COM, LLC
+ *
+ * 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 <avr/interrupt.h>
+#include <avr/pgmspace.h>
+#include "usb_keycodes.h"
+#include "usb_keyboard.h"
+#include "print.h"
+#include "debug.h"
+#include "util.h"
+#include "host.h"
+
+
+// protocol setting from the host.  We use exactly the same report
+// either way, so this variable only stores the setting since we
+// are required to be able to report which setting is in use.
+uint8_t usb_keyboard_protocol=1;
+
+// the idle configuration, how often we send the report to the
+// host (ms * 4) even when it hasn't changed
+// Windows and Linux set 0 while OS X sets 6(24ms) by SET_IDLE request.
+uint8_t usb_keyboard_idle_config=125;
+
+// count until idle timeout
+uint8_t usb_keyboard_idle_count=0;
+
+// 1=num lock, 2=caps lock, 4=scroll lock, 8=compose, 16=kana
+volatile uint8_t usb_keyboard_leds=0;
+
+
+static inline int8_t send_report(report_keyboard_t *report, uint8_t endpoint, uint8_t keys_start, uint8_t keys_end);
+
+
+int8_t usb_keyboard_send_report(report_keyboard_t *report)
+{
+    int8_t result = 0;
+
+#ifdef NKRO_ENABLE
+    if (keyboard_nkro)
+        result = send_report(report, KBD2_ENDPOINT, 0, KBD2_REPORT_KEYS);
+    else
+#endif
+    {
+        if (usb_keyboard_protocol)
+            result = send_report(report, KBD_ENDPOINT, 0, KBD_REPORT_KEYS);
+        else
+            result = send_report(report, KBD_ENDPOINT, 0, 6);
+    }
+
+    if (result) return result;
+    usb_keyboard_idle_count = 0;
+    usb_keyboard_print_report(report);
+    return 0;
+}
+
+void usb_keyboard_print_report(report_keyboard_t *report)
+{
+    if (!debug_keyboard) return;
+    print("keys: ");
+    for (int i = 0; i < REPORT_KEYS; i++) { phex(report->keys[i]); print(" "); }
+    print(" mods: "); phex(report->mods); print("\n");
+}
+
+
+static inline int8_t send_report(report_keyboard_t *report, uint8_t endpoint, uint8_t keys_start, uint8_t keys_end)
+{
+    uint8_t intr_state, timeout;
+
+    if (!usb_configured()) return -1;
+    intr_state = SREG;
+    cli();
+    UENUM = endpoint;
+    timeout = UDFNUML + 50;
+    while (1) {
+            // are we ready to transmit?
+            if (UEINTX & (1<<RWAL)) break;
+            SREG = intr_state;
+            // has the USB gone offline?
+            if (!usb_configured()) return -1;
+            // have we waited too long?
+            if (UDFNUML == timeout) return -1;
+            // get ready to try checking again
+            intr_state = SREG;
+            cli();
+            UENUM = endpoint;
+    }
+    UEDATX = report->mods;
+#ifdef NKRO_ENABLE
+    if (!keyboard_nkro)
+        UEDATX = 0;
+#else
+    UEDATX = 0;
+#endif
+    for (uint8_t i = keys_start; i < keys_end; i++) {
+            UEDATX = report->keys[i];
+    }
+    UEINTX = 0x3A;
+    SREG = intr_state;
+    return 0;
+}