1 files changed, 64 insertions, 0 deletions
diff --git a/core/time.h b/core/time.h
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+++ b/core/time.h
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+/* *****************************************************************************
+ *  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 3 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, see <http://www.gnu.org/licenses/>.
+ *
+ *  Created: 12/18/09 02:41:40
+ *  Copyright (c) 2009 Perry L. Hung. All rights reserved.
+ *
+ * ****************************************************************************/
+
+/**
+ *  @file time.h
+ *
+ *  @brief 
+ */
+
+#ifndef _TIME_H
+#define _TIME_H
+
+#ifdef __cplusplus
+extern "C"{
+#endif
+/* Returns time since boot in milliseconds  */
+uint32_t millis(void);
+
+/* Time in microseconds since boot  */
+uint32_t micros(void);
+
+/* Delay for ms milliseconds  */
+void delay(unsigned long ms);
+
+/* Delay for us microseconds  */
+void delayMicroseconds(uint32_t us);
+
+#if 0
+static inline void delay_us(uint32 us) {
+    us *= 12;
+    asm volatile("mov  r0, %[us]        \n\t"
+                 "subs r0, #2 \n\t"
+"1:                                    \n\t"
+                  "subs r0, r0, #1           \n\t"
+                  "bne 1b"
+                 :
+                 : [us] "r" (us)
+                 : "r0", "cc");
+
+}
+#endif
+#ifdef __cplusplus
+} // extern "C"
+#endif
+
+
+#endif
+