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stm32/i2c: expose all functionality as inherent methods.

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This commit is contained in:
Dario Nieuwenhuis
2022-01-14 23:31:10 +01:00
parent c949519714
commit 97ab859f00
4 changed files with 99 additions and 64 deletions
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50
embassy-stm32/src/i2c/v1.rs
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@@ -3,9 +3,6 @@ use crate::time::Hertz;
use core::marker::PhantomData;
use embassy::util::Unborrow;
use embassy_hal_common::unborrow;
use embedded_hal::blocking::i2c::Read;
use embedded_hal::blocking::i2c::Write;
use embedded_hal::blocking::i2c::WriteRead;
use crate::pac::i2c;
@@ -179,12 +176,8 @@ impl<'d, T: Instance> I2c<'d, T> {
let value = T::regs().dr().read().dr();
Ok(value)
}
}
impl<'d, T: Instance> Read for I2c<'d, T> {
type Error = Error;
fn read(&mut self, addr: u8, buffer: &mut [u8]) -> Result<(), Self::Error> {
pub fn blocking_read(&mut self, addr: u8, buffer: &mut [u8]) -> Result<(), Error> {
if let Some((last, buffer)) = buffer.split_last_mut() {
// Send a START condition and set ACK bit
unsafe {
@@ -248,12 +241,8 @@ impl<'d, T: Instance> Read for I2c<'d, T> {
Err(Error::Overrun)
}
}
}
impl<'d, T: Instance> Write for I2c<'d, T> {
type Error = Error;
fn write(&mut self, addr: u8, bytes: &[u8]) -> Result<(), Self::Error> {
pub fn blocking_write(&mut self, addr: u8, bytes: &[u8]) -> Result<(), Error> {
unsafe {
self.write_bytes(addr, bytes)?;
// Send a STOP condition
@@ -267,16 +256,41 @@ impl<'d, T: Instance> Write for I2c<'d, T> {
// Fallthrough is success
Ok(())
}
pub fn blocking_write_read(
&mut self,
addr: u8,
bytes: &[u8],
buffer: &mut [u8],
) -> Result<(), Error> {
unsafe { self.write_bytes(addr, bytes)? };
self.blocking_read(addr, buffer)?;
Ok(())
}
}
impl<'d, T: Instance> WriteRead for I2c<'d, T> {
impl<'d, T: Instance> embedded_hal::blocking::i2c::Read for I2c<'d, T> {
type Error = Error;
fn read(&mut self, addr: u8, buffer: &mut [u8]) -> Result<(), Self::Error> {
self.blocking_read(addr, buffer)
}
}
impl<'d, T: Instance> embedded_hal::blocking::i2c::Write for I2c<'d, T> {
type Error = Error;
fn write(&mut self, addr: u8, bytes: &[u8]) -> Result<(), Self::Error> {
self.blocking_write(addr, bytes)
}
}
impl<'d, T: Instance> embedded_hal::blocking::i2c::WriteRead for I2c<'d, T> {
type Error = Error;
fn write_read(&mut self, addr: u8, bytes: &[u8], buffer: &mut [u8]) -> Result<(), Self::Error> {
unsafe { self.write_bytes(addr, bytes)? };
self.read(addr, buffer)?;
Ok(())
self.blocking_write_read(addr, bytes, buffer)
}
}