How to set up a command-based communication using I2C

Projects Networking, Protocols, and Devices
18

By the way, I still do not see what could possible be wrong with Wire.setClock(). Here is where this code ends up:

/* 
 * Function twi_setClock
 * Desc     sets twi bit rate
 * Input    Clock Frequency
 * Output   none
 */
void twi_setFrequency(uint32_t frequency)
{
  TWBR = ((F_CPU / frequency) - 16) / 2;
  /* twi bit rate formula from atmega128 manual pg 204
  SCL Frequency = CPU Clock Frequency / (16 + (2 * TWBR))
  note: TWBR should be 10 or higher for master mode
  It is 72 for a 16mhz Wiring board with 100kHz TWI */
}

F_CPU is defined as 48000000 for the M0 board. So this function evaluates to ((48000000/100000)-16)/2 = 232
Anything wrong with that?