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TDA4VM: KERNEL下ADC驱动连续读取模式无法开启

Part Number: TDA4VM
Other Parts Discussed in Thread: ADS8684,

你好,我目前使用TDA4VM,SDK版本是ti-processor-sdk-linux-j7-evm-08_05_00_08-Linux,使用的ADC是ADS8684,参考software-dl.ti.com/.../iio:device0下能够看到对应的文件,可以获取到对应通道对应文件的值,但是在文档后便设置连续读取模式时,前面都可以设置成功,最后在 echo 1 > /sys/bus/iio/devices/iio\:device0/buffer时无法设置成功,提示-sh: echo: write error: Invalid argument,这个可能是什么原因造成的?