avr-hal | embedded-hal abstractions for AVR microcontrollers
kandi X-RAY | avr-hal Summary
kandi X-RAY | avr-hal Summary
[arduino-hal docs] docs] [atmega-hal docs] docs] [attiny-hal docs] docs].
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QUESTION
I'm running into an issue with trait bounds and can't understand what I'm doing wrong. I'm working with the arduino-uno crate from avr-hal and I have a function that reads the ADC, implemented as follows:
...ANSWER
Answered 2021-Jun-05 at 14:56The compiler error says:
the trait bound
&mut T: avr_hal_generic::embedded_hal::adc::Channel
is not satisfied
Notice that the error is asking for &mut T
to implement Channel
, &mut T: Channel<...>
, whereas your T
has the bound T: Channel<...>
— applying to T
itself rather than &mut T
. That's why the bound you've already written isn't helping.
Now, what's the right fix? If I look at the docs you linked, I can find the type of ::read
. (Note: I copied the text from the docs to construct this snippet; I didn't read the source code.)
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