120 lines
3.1 KiB
Rust
120 lines
3.1 KiB
Rust
#![no_std]
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#![no_main]
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#![feature(min_type_alias_impl_trait)]
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#![feature(impl_trait_in_bindings)]
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#![feature(type_alias_impl_trait)]
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#[path = "../example_common.rs"]
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mod example_common;
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use embassy_traits::spi::FullDuplex;
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use example_common::*;
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use cortex_m_rt::entry;
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use defmt::panic;
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use embassy::executor::{task, Executor};
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use embassy::util::Forever;
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use embedded_hal::digital::v2::*;
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use futures::pin_mut;
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use nrf52840_hal::clocks;
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use nrf52840_hal::gpio;
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use embassy_nrf::{interrupt, pac, rtc, spim};
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#[task]
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async fn run() {
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info!("running!");
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let p = unsafe { embassy_nrf::pac::Peripherals::steal() };
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let p0 = gpio::p0::Parts::new(p.P0);
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let pins = spim::Pins {
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sck: p0.p0_29.into_push_pull_output(gpio::Level::Low).degrade(),
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miso: Some(p0.p0_28.into_floating_input().degrade()),
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mosi: Some(p0.p0_30.into_push_pull_output(gpio::Level::Low).degrade()),
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};
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let config = spim::Config {
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pins,
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frequency: spim::Frequency::M16,
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mode: spim::MODE_0,
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orc: 0x00,
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};
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let mut ncs = p0.p0_31.into_push_pull_output(gpio::Level::High);
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let spim = spim::Spim::new(p.SPIM3, interrupt::take!(SPIM3), config);
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pin_mut!(spim);
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// Example on how to talk to an ENC28J60 chip
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// softreset
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cortex_m::asm::delay(10);
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ncs.set_low().unwrap();
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cortex_m::asm::delay(5);
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let tx = [0xFF];
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unwrap!(spim.as_mut().read_write(&mut [], &tx).await);
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cortex_m::asm::delay(10);
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ncs.set_high().unwrap();
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cortex_m::asm::delay(100000);
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let mut rx = [0; 2];
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// read ESTAT
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cortex_m::asm::delay(5000);
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ncs.set_low().unwrap();
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cortex_m::asm::delay(5000);
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let tx = [0b000_11101, 0];
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unwrap!(spim.as_mut().read_write(&mut rx, &tx).await);
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cortex_m::asm::delay(5000);
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ncs.set_high().unwrap();
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info!("estat: {=[?]}", rx);
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// Switch to bank 3
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cortex_m::asm::delay(10);
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ncs.set_low().unwrap();
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cortex_m::asm::delay(5);
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let tx = [0b100_11111, 0b11];
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unwrap!(spim.as_mut().read_write(&mut rx, &tx).await);
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cortex_m::asm::delay(10);
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ncs.set_high().unwrap();
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// read EREVID
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cortex_m::asm::delay(10);
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ncs.set_low().unwrap();
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cortex_m::asm::delay(5);
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let tx = [0b000_10010, 0];
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unwrap!(spim.as_mut().read_write(&mut rx, &tx).await);
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cortex_m::asm::delay(10);
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ncs.set_high().unwrap();
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info!("erevid: {=[?]}", rx);
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}
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static RTC: Forever<rtc::RTC<pac::RTC1>> = Forever::new();
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static ALARM: Forever<rtc::Alarm<pac::RTC1>> = Forever::new();
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static EXECUTOR: Forever<Executor> = Forever::new();
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#[entry]
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fn main() -> ! {
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info!("Hello World!");
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let p = unwrap!(embassy_nrf::pac::Peripherals::take());
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clocks::Clocks::new(p.CLOCK)
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.enable_ext_hfosc()
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.set_lfclk_src_external(clocks::LfOscConfiguration::NoExternalNoBypass)
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.start_lfclk();
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let rtc = RTC.put(rtc::RTC::new(p.RTC1, interrupt::take!(RTC1)));
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rtc.start();
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unsafe { embassy::time::set_clock(rtc) };
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let alarm = ALARM.put(rtc.alarm0());
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let executor = EXECUTOR.put(Executor::new());
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executor.set_alarm(alarm);
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executor.run(|spawner| {
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unwrap!(spawner.spawn(run()));
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});
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}
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