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C6678 i2c EEPROM启动问题



I2C启动 ,“DEVSTA”寄存器的值与配置状态不对应,为0x0000FFFF,一般值都可以对应上,唯独把i2c设为master mode(也就是8-9bit为0x00) ,DEVSTA就会变为0x0000ffff,为什么啊?????求大神解答,救命啊,啊啊,搞不懂了,硬件又没有给出串口,我都无法看打印,,,,不知道问题所在了啊,救命,救命