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stm32-rs / stm32l0xx-hal

A hardware abstraction layer (HAL) for the STM32L0 series microcontrollers written in Rust
BSD Zero Clause License
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adc to internal temperature #161

Closed pdgilbert closed 3 years ago

pdgilbert commented 3 years ago

Is it possible to read the internal temperature with adc. I think it is connected to internal channel ADC_IN18 but I don't see how to specify that. (Newbie, so I may just be doing something stupid.)

hannobraun commented 3 years ago

The internal temperature sensor is represented by adc::VTemp. I'm not sure how to use it, but it has an enable method, and presumably can be treated like any other channel after that.

It would be great if we had an example showing this in the repository.

pdgilbert commented 3 years ago

Ok, I got it to build. I just used VTemp as the channel and didn't need to do any enable for it to build. I don't have hardware to test that this actually works. I can do a PR with an example if you like, but not testing on hardware is a caveat.

hannobraun commented 3 years ago

Well, I guess having an example that points users in the right direction would be valuable, even if it's not tested. I'd merge your PR, as long as the example has prominent comments that clearly state it needs testing and might possibly not work.

pdgilbert commented 3 years ago

I will do a PR shortly. In addition to saying it has not been tested I will suggest if anyone does test it then they could report results here (issue #161). I'll also add a comment about my site https://github.com/pdgilbert/eg_stm_hal/ which has setup() functions for other devices, and several other examples too. Let me know if you would prefer that I omit that. Thanks for your help.