MSP430 IIC

Setting the UCTXSTP bit will generate a STOP condition. After setting
UCTXSTP, a NACK followed by a STOP condition is generated after reception
of the data from the slave, or immediately if the USCI module is currently
waiting for UCBxRXBUF to be read.
If a master wants to receive a single byte only, the UCTXSTP bit must be set
while the byte is being received. For this case, the UCTXSTT may be polled
to determine when it is cleared:

这个是datasheet手册上的一段，请问我何时发送stop信号，

Maka Luo：

更详细资料见各系列的用户手册。

灰小子：

楼主用的哪一款msp430？

建议结合mspware里官网的例程来看，就容易懂了

yu yong1：

回复 Maka Luo:

这个IIC在通讯的时候我发现上电后   IIC不能正常的发送第一波数据， 我用的是EEprom

yu yong1：

回复 Maka Luo:

为什么我上电初始化时要发个start信号，EEprom的读取才能正常