"Kim, Milo" <Milo.Kim@xxxxxx> wrote:
>> > + switch (mask) {
>> > + case IIO_CHAN_INFO_RAW:
>> > + *val = result;
>> > + return IIO_VAL_INT;
>> > + case IIO_CHAN_INFO_SCALE:
>> > + *val = adc_const[id] * ((result * 1000 + 500) / 1000);
>>
>> This looks wrong. The IIO_CHAN_INFO_SCALE attribute is the factor by
>> which
>> IIO_CHAN_INFO_RAW needs to be multiplied to get the value in the
>proper
>> unit,
>> which is specified in the IIO ABI spec. E.g. milli volts for
>voltages.
>>
>> What you return here seems to be the IIO_CHAN_INFO_PROCESSED
>attribute.
>> Which
>> basically is raw * scale.
>
>Thanks a lot for your review.
>
>Any way to get the result with offset value in the iio-consumer side?
>What I need is as below.
>
> result = raw * scale + offset
>
>At this moment, there are two apis() for reading the iio channel
>- iio_read_channel_raw() and iio_read_channel_scale().
>
>Does it sound good if I add iio_read_channel_offset() consumer api
>using IIO_CHAN_INFO_OFFSET?
Yes. Please add that.
>
>Best Regards,
>Milo
--
Sent from my Android phone with K-9 Mail. Please excuse my brevity.
--
To unsubscribe from this list: send the line "unsubscribe linux-iio" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
