29 void twi_init(
unsigned char sda,
unsigned char scl);
31 void twi_setClock(
unsigned int freq);
32 uint8_t twi_writeTo(
unsigned char address,
unsigned char * buf,
unsigned int len,
unsigned char sendStop);
33 uint8_t twi_readFrom(
unsigned char address,
unsigned char * buf,
unsigned int len,
unsigned char sendStop);