I'm using the I2C driver from this linkto get the time data from a RTC chip (DS3231). But I keep getting I2C_NACK_ON_ADDRESS after sending the first byte which is the slave address (0x68) and I can't go forward after this.
All things seems to be ok. I used I2C0 and configured it correctly and using a famous DS3231 module with battery and everything and with 4.7K pull-up resistors.
What could be the problem?