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MSP430G2452的IO口接ADS1232采集AD数据的问题

灰小子
Guru 67475 points
Other Parts Discussed in Thread: MSP430G2452, ADS1232

使用MSP430G2452的IO口读ADS1232的AD数据，在RDY/DOUT脚发生下降沿时触发中断读AD数据，而非查询RDY/DOUT为低电平。在采用中断方式读AD数据时发现，读数据的速率并非为SPEED=0（10Hz），而是远远小于10Hz,只有1～2Hz,并且还经常有错误数据0x00FFFFFF出现。请问各位大侠，这是怎么回事？