1 files changed, 18 insertions, 0 deletions
diff --git a/usart/include/common.h b/usart/include/common.h
new file mode 100644
index 0000000..d88d82d
--- /dev/null
+++ b/usart/include/common.h
@@ -0,0 +1,18 @@
+#ifndef COMMON__H
+#define COMMON__H
+
+/* Define __IO to be volatile if it's not already. */
+#ifndef __IO
+#define __IO volatile
+#endif
+
+#define bool int
+#ifndef __cplusplus
+#define true 1
+#define false 0
+#endif
+
+#define PACKED __attribute__((packed))
+#define BIT(n) (1 << (n))
+
+#endif /* COMMON_H */