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-rw-r--r--os/nil/include/ch.h20
1 files changed, 20 insertions, 0 deletions
diff --git a/os/nil/include/ch.h b/os/nil/include/ch.h
index dc89bd597..3aa85af6c 100644
--- a/os/nil/include/ch.h
+++ b/os/nil/include/ch.h
@@ -74,6 +74,26 @@
/** @} */
/**
+ * @name Constants for configuration options
+ */
+/**
+ * @brief Generic 'false' preprocessor boolean constant.
+ * @note It is meant to be used in configuration files as switch.
+ */
+#if !defined(FALSE) || defined(__DOXYGEN__)
+#define FALSE 0
+#endif
+
+/**
+ * @brief Generic 'true' preprocessor boolean constant.
+ * @note It is meant to be used in configuration files as switch.
+ */
+#if !defined(TRUE) || defined(__DOXYGEN__)
+#define TRUE 1
+#endif
+/** @} */
+
+/**
* @name Wakeup messages
* @{
*/