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AM3352 ADC

Other Parts Discussed in Thread: AM3352

您好,我之前做了套板子,ADC部分只用了AIN6和AIN7,然后其他ADC全部空置,然后使用的时候正常,后来我改版的时候看了这个网页的资料

processors.wiki.ti.com/.../AM335x_Schematic_Checklist

就把不用的AIN口全部接地了~现在的解法如附件所示

但是我用shell操作的时候出现

[root@SRTC ~]#cd /sys/bus/iio/devices/iio\:device0/
[root@SRTC iio:device0]#cat in_voltage7_raw
cat: read error: Resource temporarily unavailable
[root@SRTC iio:device0]#cat in_voltage7_raw
cat: read error: Resource temporarily unavailable
[root@SRTC iio:device0]#cat in_voltage6_raw
cat: read error: Resource temporarily unavailable

我检查了硬件焊接没问题,现在实在是不知道问题出在哪,希望工作人员可以帮助我一下,谢谢。