Reply
Posts: 4
Registered: ‎05-05-2017
Accepted Solution

Si1133 UVI calculation

         HI,eh,,,I'm using the Si1133 sensor now. And I can write and read the registers and parameters ,means the communication is OK.

        But I don't know how to make it run and give me the calculation result,    I don't know how to configure it right. So I really need your help now. Sincerely~

        Just one channal is ok ,I will do the rest .Tell me what to do~

Posts: 4
Registered: ‎05-05-2017

Re: Si1133 UVI calculation

Well, I can read the calculation now ,Please teach me how to convert the 16bits value to the UV index ,thanks very much~~~

Posts: 58
Registered: ‎04-09-2015

Re: Si1133 UVI calculation

Hi,

 

Here's the UV app note that can be helpful to you:

http://www.silabs.com/documents/public/application-notes/AN968-Si1133-UV-Index-Sensor-Electrical-and...

 

Section 8 describes UV index calculation.

 

I've also attached the sample code we used to calculate UV index on our Si115x/33-OPT-EVB. The code includes the initialization code as well as the UV coefficient.

 

Regards,

Tony

Highlighted
Posts: 4
Registered: ‎05-05-2017

Re: Si1133 UVI calculation

Thanks a lot~