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iio_readdev buffer refill timeout error


I'm having some issues reading the device after it is available. I'm just trying to verify that data is getting into memory for the device using the iio_readdev in the console. 

After I manually turn device on using echo 1 > into scan_elements in_voltage_en, echo 1 > buffer/enable etc. 

The device shows data_available but I'm unable to read this data from the buffer. Maybe I'm doing something wrong as I'm new to using IIO.