Total time to sample all enabled channels in the SAADC.

RE: Total time to sample all enabled channels in the SAADC.

Einar Thorsrud — Tue, 09 Jan 2024 11:50:29 GMT

Your calculation is sound so yes, the total time will be 1.68 ms if you sample 4 channels using a 40 µs acquisition time.

RE: Total time to sample all enabled channels in the SAADC.

Fernando Mercado — Mon, 08 Jan 2024 22:09:29 GMT

Thanks for the answer.

According to your question, I configured the TIMER1 to trigger the ISR every 1.68 ms, and I supposed that Total time is 1.68 ms, but actually that was my question: if Total Time in my case is 1.68ms?.

RE: Total time to sample all enabled channels in the SAADC.

Einar Thorsrud — Thu, 04 Jan 2024 13:41:44 GMT

Hi,

Generally you are right in your calculation which comes from the forumla in the product specification. When you have multiple channels enabled, they are consecutively sampled and the total time is the sum of acquisition and conversion for each chanel.

I am a bit confused about this, though, and I don't understand your description of the timers. What is it you are measuring and how? Where do you get 1.68 ms from?