Using an Atmega168P - programmed by means of
avrdude with the
.hex file generated by Arduino IDE.
The following code sets the 8 MHz Atmega's TWI interface to just 15.625 kHz:
Wire.begin(); // Initiate the Wire library Wire.setClock(100* 1000); delay(10);
While this one doubles it to 31.25 kHz:
Wire.begin(); // Initiate the Wire library TWBR = (F_CPU/(100*1000) - 16)/2; TWSR &= 0b11111100; delay(10);
Looking to get 100 kHz clock. What am I missing ?