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authorJack Humbert <jack.humb@gmail.com>2015-10-27 12:42:30 -0400
committerJack Humbert <jack.humb@gmail.com>2015-10-27 12:42:30 -0400
commit547da78335298df6666200c6063ac6f1aba312fd (patch)
tree47df0252ee24b1ecc27b9dd0458c51f20bf088c3 /tmk_core/common/timer.h
parenta766918d5c48204375f4c207b30bbbf1389df14f (diff)
parentfa33719adab1393753312d298b8c365e04e844b9 (diff)
merging tmk
Diffstat (limited to 'tmk_core/common/timer.h')
-rw-r--r--tmk_core/common/timer.h53
1 files changed, 53 insertions, 0 deletions
diff --git a/tmk_core/common/timer.h b/tmk_core/common/timer.h
new file mode 100644
index 0000000000..fe23f87aec
--- /dev/null
+++ b/tmk_core/common/timer.h
@@ -0,0 +1,53 @@
+/*
+Copyright 2011 Jun Wako <wakojun@gmail.com>
+
+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, see <http://www.gnu.org/licenses/>.
+*/
+
+#ifndef TIMER_H
+#define TIMER_H 1
+
+#include <stdint.h>
+
+#if defined(__AVR__)
+#include "avr/timer_avr.h"
+#endif
+
+
+#define TIMER_DIFF(a, b, max) ((a) >= (b) ? (a) - (b) : (max) - (b) + (a))
+#define TIMER_DIFF_8(a, b) TIMER_DIFF(a, b, UINT8_MAX)
+#define TIMER_DIFF_16(a, b) TIMER_DIFF(a, b, UINT16_MAX)
+#define TIMER_DIFF_32(a, b) TIMER_DIFF(a, b, UINT32_MAX)
+#define TIMER_DIFF_RAW(a, b) TIMER_DIFF_8(a, b)
+
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+extern volatile uint32_t timer_count;
+
+
+void timer_init(void);
+void timer_clear(void);
+uint16_t timer_read(void);
+uint32_t timer_read32(void);
+uint16_t timer_elapsed(uint16_t last);
+uint32_t timer_elapsed32(uint32_t last);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif