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AD问题

Other Parts Discussed in Thread: TM4C129XNCZAD

,用的芯片型号是TM4C129XNCZAD。ADCSequenceStepConfigure(ADC0_BASE,  0, 0, ADC_CTL_CH0 | ADC_CTL_IE);为什么只能输出ADC_CTL_CH0到ADC_CTL_CH7,ADC_CTL_CH8到ADC_CTL_CH23无数值输出,查看资料,发现以前的LM3S9B96芯片只能初始化到ADC_CTL_CH7,是不是由于ADCSequenceStepConfigure()函数未更新造成的,如果是,怎么在底层修改ADCSequenceStepConfigure()函数。