1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/avr/i2c_master.c b/drivers/avr/i2c_master.c
index 47c6f8e6c..a04e6570d 100755
--- a/drivers/avr/i2c_master.c
+++ b/drivers/avr/i2c_master.c
@@ -8,7 +8,9 @@
 #include "i2c_master.h"
 #include "timer.h"
+#ifndef F_SCL
 #define F_SCL 400000UL // SCL frequency
+#endif
 #define Prescaler 1
 #define TWBR_val ((((F_CPU / F_SCL) / Prescaler) - 16 ) / 2)

diff --git a/drivers/avr/i2c_master.c b/drivers/avr/i2c_master.c index 47c6f8e6c..a04e6570d 100755 --- a/drivers/avr/i2c_master.c +++ b/drivers/avr/i2c_master.c
@@ -8,7 +8,9 @@
8	#include "i2c_master.h"	8	#include "i2c_master.h"
9	#include "timer.h"	9	#include "timer.h"
10		10
		11	#ifndef F_SCL
11	#define F_SCL 400000UL // SCL frequency	12	#define F_SCL 400000UL // SCL frequency
		13	#endif
12	#define Prescaler 1	14	#define Prescaler 1
13	#define TWBR_val ((((F_CPU / F_SCL) / Prescaler) - 16 ) / 2)	15	#define TWBR_val ((((F_CPU / F_SCL) / Prescaler) - 16 ) / 2)
14		16