1 files changed, 80 insertions, 0 deletions
diff --git a/cm3cpp/systick.hpp b/cm3cpp/systick.hpp
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--- /dev/null
+++ b/cm3cpp/systick.hpp
@@ -0,0 +1,80 @@
+/*
+ * This file is part of the libopencm3_cpp_extensions project.
+ * hosted at http://github.com/thirdpin/libopencm3_cpp_extensions
+ *
+ * Copyright (C) 2016  Third Pin LLC
+ * Written by Anastasiia Lazareva <a.lazareva@thirdpin.ru>
+ *
+ * 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/>.
+ */
+
+/*
+SYSTICK implementation, public interface
+*/
+
+#ifndef SYSTICK_API_H
+#define SYSTICK_API_H
+
+#include <libopencm3/cm3/systick.h>
+#include <stdint.h>
+
+#ifndef CM3CPP_CUSTOM_SYSTICK
+extern "C" void sys_tick_handler(void);
+#endif
+
+extern "C" void delay_nop(uint32_t count);
+
+namespace cm3cpp {
+
+namespace systick {
+
+void init(uint32_t system_core_freq, uint32_t div = 1000);
+void deinit();
+
+#ifndef CM3CPP_CUSTOM_SYSTICK
+
+uint32_t get_counter();
+void delay_systick(uint32_t ms);
+
+class Counter
+{
+ public:
+    enum Mode
+    {
+        CYCLE,
+        ONE_SHOT
+    };
+
+    Counter(Mode mode, uint32_t period);
+    void init(Mode mode, uint32_t period);
+    bool timeout();
+    bool start();
+    bool stop();
+
+    void set_period(uint32_t const period) { _period = period; }
+    uint32_t period() const { return _period; }
+
+ private:
+    uint32_t _saved;
+    uint32_t _period;
+    Mode _mode;
+    bool _is_active;
+};
+
+#endif  // CM3CPP_CUSTOM_SYSTICK
+
+}  // namespace systick
+
+}  // namespace cm3cpp
+#endif