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Merge pull request #2596 from NBonaparte/nrf-spi-drive

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feat(nrf/spim): allow specifying drive of SPI pins
This commit is contained in:
Dario Nieuwenhuis 2024-02-20 13:48:50 +00:00 committed by GitHub
commit 280f60654b
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2 changed files with 20 additions and 5 deletions
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2
embassy-nrf/src/gpio.rs
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@ -189,7 +189,7 @@ impl<'d> Output<'d> {
}
}
fn convert_drive(drive: OutputDrive) -> DRIVE_A {
pub(crate) fn convert_drive(drive: OutputDrive) -> DRIVE_A {
match drive {
OutputDrive::Standard => DRIVE_A::S0S1,
OutputDrive::HighDrive0Standard1 => DRIVE_A::H0S1,

23
embassy-nrf/src/spim.rs
View File

@ -15,7 +15,7 @@ pub use pac::spim0::frequency::FREQUENCY_A as Frequency;
use crate::chip::{EASY_DMA_SIZE, FORCE_COPY_BUFFER_SIZE};
use crate::gpio::sealed::Pin as _;
use crate::gpio::{self, AnyPin, Pin as GpioPin, PselBits};
use crate::gpio::{self, convert_drive, AnyPin, OutputDrive, Pin as GpioPin, PselBits};
use crate::interrupt::typelevel::Interrupt;
use crate::util::{slice_in_ram_or, slice_ptr_len, slice_ptr_parts, slice_ptr_parts_mut};
use crate::{interrupt, pac, Peripheral};
@ -46,6 +46,15 @@ pub struct Config {
/// When doing bidirectional transfers, if the TX buffer is shorter than the RX buffer,
/// this byte will be transmitted in the MOSI line for the left-over bytes.
pub orc: u8,
/// Drive strength for the SCK line.
pub sck_drive: OutputDrive,
/// Drive strength for the MOSI line.
pub mosi_drive: OutputDrive,
/// Drive strength for the MISO line.
pub miso_drive: OutputDrive,
}
impl Default for Config {
@ -55,6 +64,9 @@ impl Default for Config {
mode: MODE_0,
bit_order: BitOrder::MSB_FIRST,
orc: 0x00,
sck_drive: OutputDrive::HighDrive,
mosi_drive: OutputDrive::HighDrive,
miso_drive: OutputDrive::HighDrive,
}
}
}
@ -159,13 +171,16 @@ impl<'d, T: Instance> Spim<'d, T> {
// Configure pins
if let Some(sck) = &sck {
sck.conf().write(|w| w.dir().output().drive().h0h1());
sck.conf()
.write(|w| w.dir().output().drive().variant(convert_drive(config.sck_drive)));
}
if let Some(mosi) = &mosi {
mosi.conf().write(|w| w.dir().output().drive().h0h1());
mosi.conf()
.write(|w| w.dir().output().drive().variant(convert_drive(config.mosi_drive)));
}
if let Some(miso) = &miso {
miso.conf().write(|w| w.input().connect().drive().h0h1());
miso.conf()
.write(|w| w.input().connect().drive().variant(convert_drive(config.miso_drive)));
}
match config.mode.polarity {