Cleaned up the licensing.

third_party/mozc-morse/space.c

@@ -0,0 +1,66 @@
+/*
+ * Copyright 2012 Google Inc.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+ * MA  02110-1301, USA.
+ */
+
+
+/*
+ * USB space key.
+ * Connect a nomally-open switch to PB0. The device works as a space bar.
+ */
+
+#include <avr/io.h>
+#include <avr/wdt.h>
+#include <util/delay.h>     /* for _delay_ms() */
+#include "usb_keyboard.h"
+
+int __attribute__((noreturn)) main(void)
+{
+  PORTB = 0xff;
+
+  wdt_enable(WDTO_1S);
+
+  initUsbKeyboard();
+
+  /* sets up timer for button polling interval */
+  /* timer 1 CTC mode, counts up at f[clock]/8 [Hz] */
+  TCCR1B = (1 << WGM12) | (1 << CS11);
+  TCNT1 = 0;
+  OCR1A = F_CPU / 8 / 100;  /* 100Hz, T=10 milliseconds */
+
+  uchar key = 0;
+  uchar lastKey = 0;
+
+  while(1) {                /* main event loop */
+    wdt_reset();
+    usbPoll();
+
+    /* samples the key input every 10 milliseconds to avoid chattering */
+    if (bit_is_clear(TIFR, OCF1A)) {
+      continue;
+    }
+    TIFR |= _BV(OCF1A);  /* clear OCF1A */
+
+    if(usbInterruptIsReady()){
+      key = bit_is_clear(PINB, PINB0) ? KEYCODE_SPACE : KEYCODE_NONE;
+      if (key != lastKey) {
+        lastKey = key;
+        prepareInterruptReport(key);
+      }
+    }
+  }
+}