diff --git a/configuration.c b/configuration.c
new file mode 100644
index 0000000..e45c0dd
--- /dev/null
+++ b/configuration.c
@@ -0,0 +1,11 @@
+#include <avr/io.h>
+
+#include "configuration.h"
+
+
+void
+configuration_init(void)
+{
+	PORTD |= _BV(PD6);
+	PORTD |= _BV(PD7);
+}
diff --git a/configuration.h b/configuration.h
new file mode 100644
index 0000000..5103ec1
--- /dev/null
+++ b/configuration.h
@@ -0,0 +1,10 @@
+#ifndef _CONFIGURATION_H_
+#define _CONFIGURATION_H_
+
+#define CHANNEL_1_ENABLED (PIND & _BV(PD6))
+#define CHANNEL_2_ENABLED (PIND & _BV(PD7))
+
+void
+configuration_init(void);
+
+#endif