Hi Peter,
On 09/12/2016 17:04, Peter Meerwald-Stadler wrote:
[...]
>> + case IIO_CHAN_INFO_SCALE:
>> + if (chan->type == IIO_VOLTAGE) {
>> + /* 3000mV / 4096 * raw */
>> + *val = 0;
>> + *val2 = 732421875;
>
> this looks more like INT_PLUS_NANO, beyond range of micro?
>
>> + return IIO_VAL_INT_PLUS_MICRO;
No, this is rather a mistake.
The scale to convert to mV is 0.732421875 (3000mV / 4096). The scale to
convert to uV is thus 732.421875.
The above code better is:
*val = 732;
*val2 = 421875;
return IIO_VAL_INT_PLUS_MICRO;
Thanks!
Quentin
--
Quentin Schulz, Free Electrons
Embedded Linux and Kernel engineering
http://free-electrons.com
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