stm32f446re: Add counter

1 files changed, 35 insertions, 0 deletions

diff --git a/include/arch/stm32f446re-nucleo/driver/counter.h b/include/arch/stm32f446re-nucleo/driver/counter.h
new file mode 100644
index 0000000..6cb329e
--- /dev/null
+++ b/include/arch/stm32f446re-nucleo/driver/counter.h
@@ -0,0 +1,35 @@
+#ifndef COUNTER_H
+#define COUNTER_H
+
+#include <libopencm3/stm32/timer.h>
+
+#include "arch.h"
+
+typedef uint32_t counter_value_t;
+typedef uint32_t counter_overflow_t;
+
+class Counter {
+	private:
+		Counter(const Counter &copy);
+
+	public:
+		counter_value_t value;
+		volatile counter_overflow_t overflow;
+
+		Counter() : overflow(0) {}
+
+		inline void start() {
+			overflow = 0;
+			timer_set_counter(TIM2, 0);
+			timer_enable_counter(TIM2);
+		}
+
+		inline void stop() {
+			timer_disable_counter(TIM2);
+			value = timer_get_counter(TIM2);
+		}
+};
+
+extern Counter counter;
+
+#endif