1 files changed, 76 insertions, 0 deletions

diff --git a/examples/nrf/src/bin/spim.rs b/examples/nrf/src/bin/spim.rs
new file mode 100644
index 000000000..c42cc6015
--- /dev/null
+++ b/examples/nrf/src/bin/spim.rs
@@ -0,0 +1,76 @@
+#![no_std]
+#![no_main]
+#![feature(min_type_alias_impl_trait)]
+#![feature(impl_trait_in_bindings)]
+#![feature(type_alias_impl_trait)]
+#![allow(incomplete_features)]
+
+#[path = "../example_common.rs"]
+mod example_common;
+
+use defmt::panic;
+use embassy::executor::Spawner;
+use embassy_nrf::gpio::{Level, Output, OutputDrive};
+use embassy_nrf::Peripherals;
+use embassy_nrf::{interrupt, spim};
+use embassy_traits::spi::FullDuplex;
+use embedded_hal::digital::v2::*;
+use example_common::*;
+
+#[embassy::main]
+async fn main(_spawner: Spawner, p: Peripherals) {
+    info!("running!");
+
+    let mut config = spim::Config::default();
+    config.frequency = spim::Frequency::M16;
+
+    let irq = interrupt::take!(SPIM3);
+    let mut spim = spim::Spim::new(p.SPI3, irq, p.P0_29, p.P0_28, p.P0_30, config);
+
+    let mut ncs = Output::new(p.P0_31, Level::High, OutputDrive::Standard);
+
+    // Example on how to talk to an ENC28J60 chip
+
+    // softreset
+    cortex_m::asm::delay(10);
+    ncs.set_low().unwrap();
+    cortex_m::asm::delay(5);
+    let tx = [0xFF];
+    unwrap!(spim.read_write(&mut [], &tx).await);
+    cortex_m::asm::delay(10);
+    ncs.set_high().unwrap();
+
+    cortex_m::asm::delay(100000);
+
+    let mut rx = [0; 2];
+
+    // read ESTAT
+    cortex_m::asm::delay(5000);
+    ncs.set_low().unwrap();
+    cortex_m::asm::delay(5000);
+    let tx = [0b000_11101, 0];
+    unwrap!(spim.read_write(&mut rx, &tx).await);
+    cortex_m::asm::delay(5000);
+    ncs.set_high().unwrap();
+    info!("estat: {=[?]}", rx);
+
+    // Switch to bank 3
+    cortex_m::asm::delay(10);
+    ncs.set_low().unwrap();
+    cortex_m::asm::delay(5);
+    let tx = [0b100_11111, 0b11];
+    unwrap!(spim.read_write(&mut rx, &tx).await);
+    cortex_m::asm::delay(10);
+    ncs.set_high().unwrap();
+
+    // read EREVID
+    cortex_m::asm::delay(10);
+    ncs.set_low().unwrap();
+    cortex_m::asm::delay(5);
+    let tx = [0b000_10010, 0];
+    unwrap!(spim.read_write(&mut rx, &tx).await);
+    cortex_m::asm::delay(10);
+    ncs.set_high().unwrap();
+
+    info!("erevid: {=[?]}", rx);
+}