Go to the documentation of this file. 11 #define SDA_LOW() (GPES = (1 << twi_sda)) 13 #define SDA_HIGH() (GPEC = (1 << twi_sda)) 14 #define SDA_READ() ((GPI & (1 << twi_sda)) != 0) 15 #define SCL_LOW() (GPES = (1 << twi_scl)) 16 #define SCL_HIGH() (GPEC = (1 << twi_scl)) 17 #define SCL_READ() ((GPI & (1 << twi_scl)) != 0)