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stm32/adc: Remove voltage and temperature conversions

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This commit is contained in:
Grant Miller
2022-10-23 16:31:10 -05:00
parent ce1cba761c
commit 545cc9326b
7 changed files with 45 additions and 103 deletions
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21
embassy-stm32/src/adc/f1.rs
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@ -86,7 +86,6 @@ pub use sample_time::SampleTime;
pub struct Adc<'d, T: Instance> {
sample_time: SampleTime,
calibrated_vdda: u32,
phantom: PhantomData<&'d mut T>,
}
@ -122,7 +121,6 @@ impl<'d, T: Instance> Adc<'d, T> {
Self {
sample_time: Default::default(),
calibrated_vdda: VDDA_CALIB_MV,
phantom: PhantomData,
}
}
@ -162,29 +160,10 @@ impl<'d, T: Instance> Adc<'d, T> {
Temperature {}
}
/// Calculates the system VDDA by sampling the internal VREF channel and comparing
/// to the expected value. If the chip's VDDA is not stable, run this before each ADC
/// conversion.
pub fn calibrate(&mut self, vref: &mut Vref) -> u32 {
let old_sample_time = self.sample_time;
self.sample_time = SampleTime::Cycles239_5;
let vref_samp = self.read(vref);
self.sample_time = old_sample_time;
self.calibrated_vdda = (ADC_MAX * VREF_INT) / u32::from(vref_samp);
self.calibrated_vdda
}
pub fn set_sample_time(&mut self, sample_time: SampleTime) {
self.sample_time = sample_time;
}
/// Convert a measurement to millivolts
pub fn to_millivolts(&self, sample: u16) -> u16 {
((u32::from(sample) * self.calibrated_vdda) / ADC_MAX) as u16
}
/// Perform a single conversion.
fn convert(&mut self) -> u16 {
unsafe {