max/embassy
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Merge pull request #2013 from xoviat/opamp

Browse Source 
stm32: update metapac and fix opamp ch
This commit is contained in:
xoviat
2023-10-04 21:20:42 +00:00
committed by GitHub
parent b887b7516e e1a0635ca3
commit 42176b1a3a
3 changed files with 33 additions and 7 deletions
Download Patch File Download Diff File Expand all files Collapse all files

32
embassy-stm32/src/opamp.rs
View File

@ -4,7 +4,15 @@ use embassy_hal_internal::{into_ref, PeripheralRef};
use crate::Peripheral;
#[cfg(opamp_f3)]
#[derive(Clone, Copy)]
pub enum OpAmpGain {
Mul1,
Mul2,
Mul4,
Mul8,
Mul16,
}
pub struct OpAmpOutput<'d, 'p, T: Instance, P: NonInvertingPin<T>> {
_inner: &'d OpAmp<'d, T>,
_input: &'p mut P,
@ -35,14 +43,32 @@ impl<'d, T: Instance> OpAmp<'d, T> {
Self { _inner: opamp }
}
#[cfg(opamp_f3)]
pub fn buffer_for<'a, 'b, P>(&'a mut self, pin: &'b mut P) -> OpAmpOutput<'a, 'b, T, P>
pub fn buffer_for<'a, 'b, P>(&'a mut self, pin: &'b mut P, gain: OpAmpGain) -> OpAmpOutput<'a, 'b, T, P>
where
P: NonInvertingPin<T>,
{
let (vm_sel, pga_gain) = match gain {
OpAmpGain::Mul1 => (0b11, 0b00),
OpAmpGain::Mul2 => (0b10, 0b00),
OpAmpGain::Mul4 => (0b10, 0b01),
OpAmpGain::Mul8 => (0b10, 0b10),
OpAmpGain::Mul16 => (0b10, 0b11),
};
#[cfg(opamp_f3)]
T::regs().opampcsr().modify(|w| {
w.set_vp_sel(pin.channel());
w.set_vm_sel(vm_sel);
w.set_pga_gain(pga_gain);
});
#[cfg(opamp_g4)]
T::regs().opamp_csr().modify(|w| {
use crate::pac::opamp::vals::*;
w.set_vp_sel(OpampCsrVpSel::from_bits(pin.channel()));
w.set_vm_sel(OpampCsrVmSel::from_bits(vm_sel));
w.set_pga_gain(OpampCsrPgaGain::from_bits(pga_gain));
});
OpAmpOutput {