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Fix example reference voltage

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This commit is contained in:
Grant Miller 2023-04-05 16:28:28 -05:00
parent 20e7b5e296
commit 7c53ebd576
1 changed files with 3 additions and 4 deletions
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7
examples/stm32f0/src/bin/adc.rs
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@ -20,10 +20,9 @@ async fn main(_spawner: Spawner) {
let mut vrefint = adc.enable_vref(&mut Delay);
let vrefint_sample = adc.read_internal(&mut vrefint);
let convert_to_millivolts = |sample| {
// FIXME: use proper datasheet and value
// From http://www.st.com/resource/en/datasheet/CD00161566.pdf
// 5.3.4 Embedded reference voltage
const VREFINT_MV: u32 = 1200; // mV
// From https://www.st.com/resource/en/datasheet/stm32f031c6.pdf
// 6.3.4 Embedded reference voltage
const VREFINT_MV: u32 = 1230; // mV
(u32::from(sample) * VREFINT_MV / u32::from(vrefint_sample)) as u16
};