arduino-nano: Add counter driver. Conflicts with timer_s=1 / loop=1

1 files changed, 27 insertions, 0 deletions

diff --git a/include/arch/arduino-nano/driver/counter.h b/include/arch/arduino-nano/driver/counter.h
new file mode 100644
index 0000000..d387a35
--- /dev/null
+++ b/include/arch/arduino-nano/driver/counter.h
@@ -0,0 +1,27 @@
+#include <avr/io.h>
+#include <avr/interrupt.h>
+
+class Counter {
+	private:
+		Counter(const Counter &copy);
+
+	public:
+		uint8_t overflowed;
+
+		Counter() : overflowed(0) {}
+
+		inline void start() {
+			overflowed = 0;
+			TCNT1 = 0;
+			TCCR1A = 0;
+			TCCR1B = _BV(CS10);
+			TIMSK1 = _BV(TOIE1);
+		}
+
+		inline uint16_t stop() {
+			TCCR1B = 0;
+			return TCNT1;
+		}
+};
+
+extern Counter counter;