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feat(nrf/spim): allow specifying drive of SPI pins

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This commit is contained in:
NBonaparte 2024-02-15 22:33:23 -08:00
parent 5220453d85
commit 6ecac3bc95
1 changed files with 39 additions and 3 deletions

42
embassy-nrf/src/spim.rs
View file

@ -50,6 +50,15 @@ 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,
/// Enable high drive for the SCK line.
pub sck_high_drive: bool,
/// Enable high drive for the MOSI line.
pub mosi_high_drive: bool,
/// Enable high drive for the MISO line.
pub miso_high_drive: bool,
}
impl Default for Config {
@ -59,6 +68,9 @@ impl Default for Config {
mode: MODE_0,
bit_order: BitOrder::MSB_FIRST,
orc: 0x00,
sck_high_drive: false,
mosi_high_drive: false,
miso_high_drive: false,
}
}
}
@ -159,13 +171,37 @@ 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();
if config.sck_high_drive {
w.drive().h0h1();
} else {
w.drive().s0s1();
}
w
});
}
if let Some(mosi) = &mosi {
mosi.conf().write(|w| w.dir().output().drive().h0h1());
mosi.conf().write(|w| {
w.dir().output();
if config.mosi_high_drive {
w.drive().h0h1();
} else {
w.drive().s0s1();
}
w
});
}
if let Some(miso) = &miso {
miso.conf().write(|w| w.input().connect().drive().h0h1());
miso.conf().write(|w| {
w.input().connect();
if config.miso_high_drive {
w.drive().h0h1();
} else {
w.drive().s0s1();
}
w
});
}
match config.mode.polarity {