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-rw-r--r--quantum/split_common/post_config.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/quantum/split_common/post_config.h b/quantum/split_common/post_config.h
index 0e59df3d06..ff0fc5e193 100644
--- a/quantum/split_common/post_config.h
+++ b/quantum/split_common/post_config.h
@@ -4,6 +4,10 @@
     #define RGBLIGHT_SPLIT
   #endif
 
+  #ifndef F_SCL
+    #define F_SCL 100000UL  // SCL frequency
+  #endif
+
 #else  // use serial
   // When using serial, the user must define RGBLIGHT_SPLIT explicitly
   //  in config.h as needed.