diff options
Diffstat (limited to 'drivers')
| -rwxr-xr-x | drivers/avr/i2c_master.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/avr/i2c_master.c b/drivers/avr/i2c_master.c index 47c6f8e6c6..a04e6570d7 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) |