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-rw-r--r--components/drivers/include/drivers/serial.h8
1 files changed, 4 insertions, 4 deletions
diff --git a/components/drivers/include/drivers/serial.h b/components/drivers/include/drivers/serial.h
index 12ecb0bb9a..eb328c98ab 100644
--- a/components/drivers/include/drivers/serial.h
+++ b/components/drivers/include/drivers/serial.h
@@ -27,10 +27,10 @@
#define DATA_BITS_8 8
#define DATA_BITS_9 9
-#define STOP_BITS_1 1
-#define STOP_BITS_2 2
-#define STOP_BITS_3 3
-#define STOP_BITS_4 4
+#define STOP_BITS_1 0
+#define STOP_BITS_2 1
+#define STOP_BITS_3 2
+#define STOP_BITS_4 3
#define PARITY_NONE 0
#define PARITY_ODD 1