ariel_os_nrf/spi/
mod.rs

1//! Provides support for the SPI communication bus.
2
3#[doc(alias = "master")]
4pub mod main;
5
6use ariel_os_embassy_common::spi::{BitOrder, Mode};
7
8fn from_mode(mode: Mode) -> embassy_nrf::spim::Mode {
9    match mode {
10        Mode::Mode0 => embassy_nrf::spim::MODE_0,
11        Mode::Mode1 => embassy_nrf::spim::MODE_1,
12        Mode::Mode2 => embassy_nrf::spim::MODE_2,
13        Mode::Mode3 => embassy_nrf::spim::MODE_3,
14    }
15}
16
17fn from_bit_order(bit_order: BitOrder) -> embassy_nrf::spim::BitOrder {
18    match bit_order {
19        BitOrder::MsbFirst => embassy_nrf::spim::BitOrder::MSB_FIRST,
20        BitOrder::LsbFirst => embassy_nrf::spim::BitOrder::LSB_FIRST,
21    }
22}
23
24#[doc(hidden)]
25pub fn init(peripherals: &mut crate::OptionalPeripherals) {
26    // Take all SPI peripherals and do nothing with them.
27    cfg_if::cfg_if! {
28        if #[cfg(context = "nrf52833")] {
29            let _ = peripherals.SPI3.take().unwrap();
30        } else if #[cfg(context = "nrf52840")] {
31            let _ = peripherals.SPI2.take().unwrap();
32            let _ = peripherals.SPI3.take().unwrap();
33        } else if #[cfg(context = "nrf5340")] {
34            let _ = peripherals.SERIAL2.take().unwrap();
35            // Used by UART
36            // let _ = peripherals.SERIAL3.take().unwrap();
37        } else if #[cfg(context = "nrf91")] {
38            let _ = peripherals.SERIAL2.take().unwrap();
39            // Used by UART
40            // let _ = peripherals.SERIAL3.take().unwrap();
41        } else {
42            compile_error!("this nRF chip is not supported");
43        }
44    }
45}
ariel_os_nrf/spi/mod.rs

ariel_os_nrf/spi/
mod.rs
