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-rw-r--r--quantum/config_common.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/quantum/config_common.h b/quantum/config_common.h
index 606cd9381a..0b2e408a43 100644
--- a/quantum/config_common.h
+++ b/quantum/config_common.h
@@ -21,6 +21,9 @@
#define ROW2COL 1
#define CUSTOM_MATRIX 2 /* Disables built-in matrix scanning code */
+// useful for direct pin mapping
+#define NO_PIN (~0)
+
#ifdef __AVR__
#ifndef __ASSEMBLER__
#include <avr/io.h>