If initially set the MSP430 i2c to slave (receive signal) and connect to other device which is master (sending signal). How to enable the interrupt process when master sending signal to slave. If the master signal is example like this ( Start condition > adress > r/w > ack > data >ack > data > ack > Stop condition ).
May i know the concept to trigger the interrupt only when the signal send to MSP430 instead of continue looping to check for the signal? What the simple c programming to make it work like initialize and the interrupt routine? Is it need to initialize the condition such as ( Enable UCSTTIEstart condition bit in UCBxI2CIE ) so the interrupt will be trigger whenever the start condition signal send from mater device to MSP430. The port for I2C is P3.1 and P3.2.