diff options
Diffstat (limited to 'examples/src/bin/uart.rs')
| -rw-r--r-- | examples/src/bin/uart.rs | 107 |
1 files changed, 0 insertions, 107 deletions
diff --git a/examples/src/bin/uart.rs b/examples/src/bin/uart.rs deleted file mode 100644 index 107936686..000000000 --- a/examples/src/bin/uart.rs +++ /dev/null | |||
| @@ -1,107 +0,0 @@ | |||
| 1 | #![no_std] | ||
| 2 | #![no_main] | ||
| 3 | #![feature(type_alias_impl_trait)] | ||
| 4 | |||
| 5 | #[path = "../example_common.rs"] | ||
| 6 | mod example_common; | ||
| 7 | use example_common::*; | ||
| 8 | |||
| 9 | use cortex_m_rt::entry; | ||
| 10 | use defmt::panic; | ||
| 11 | use embassy::executor::{task, Executor}; | ||
| 12 | use embassy::time::{Duration, Timer}; | ||
| 13 | use embassy::util::Forever; | ||
| 14 | use embassy_nrf::{interrupt, pac, rtc, uarte}; | ||
| 15 | use futures::future::{select, Either}; | ||
| 16 | use nrf52840_hal::clocks; | ||
| 17 | use nrf52840_hal::gpio; | ||
| 18 | |||
| 19 | #[task] | ||
| 20 | async fn run(mut uart: uarte::Uarte<pac::UARTE0>) { | ||
| 21 | info!("uarte initialized!"); | ||
| 22 | |||
| 23 | // Message must be in SRAM | ||
| 24 | let mut buf = [0; 8]; | ||
| 25 | buf.copy_from_slice(b"Hello!\r\n"); | ||
| 26 | |||
| 27 | uart.send(&buf).await; | ||
| 28 | info!("wrote hello in uart!"); | ||
| 29 | |||
| 30 | info!("reading..."); | ||
| 31 | loop { | ||
| 32 | let received = match select( | ||
| 33 | uart.receive(&mut buf), | ||
| 34 | Timer::after(Duration::from_millis(10)), | ||
| 35 | ) | ||
| 36 | .await | ||
| 37 | { | ||
| 38 | Either::Left((buf, _)) => buf, | ||
| 39 | Either::Right((_, read)) => { | ||
| 40 | let (buf, n) = read.stop().await; | ||
| 41 | &buf[..n] | ||
| 42 | } | ||
| 43 | }; | ||
| 44 | |||
| 45 | if received.len() > 0 { | ||
| 46 | info!("read done, got {:[u8]}", received); | ||
| 47 | |||
| 48 | // Echo back received data | ||
| 49 | uart.send(received).await; | ||
| 50 | } | ||
| 51 | } | ||
| 52 | } | ||
| 53 | |||
| 54 | static RTC: Forever<rtc::RTC<pac::RTC1>> = Forever::new(); | ||
| 55 | static ALARM: Forever<rtc::Alarm<pac::RTC1>> = Forever::new(); | ||
| 56 | static EXECUTOR: Forever<Executor> = Forever::new(); | ||
| 57 | |||
| 58 | #[entry] | ||
| 59 | fn main() -> ! { | ||
| 60 | info!("Hello World!"); | ||
| 61 | |||
| 62 | let p = unwrap!(embassy_nrf::pac::Peripherals::take()); | ||
| 63 | |||
| 64 | clocks::Clocks::new(p.CLOCK) | ||
| 65 | .enable_ext_hfosc() | ||
| 66 | .set_lfclk_src_external(clocks::LfOscConfiguration::NoExternalNoBypass) | ||
| 67 | .start_lfclk(); | ||
| 68 | |||
| 69 | let rtc = RTC.put(rtc::RTC::new(p.RTC1, interrupt::take!(RTC1))); | ||
| 70 | rtc.start(); | ||
| 71 | |||
| 72 | unsafe { embassy::time::set_clock(rtc) }; | ||
| 73 | |||
| 74 | let alarm = ALARM.put(rtc.alarm0()); | ||
| 75 | let executor = EXECUTOR.put(Executor::new_with_alarm(alarm, cortex_m::asm::sev)); | ||
| 76 | |||
| 77 | // Init UART | ||
| 78 | let port0 = gpio::p0::Parts::new(p.P0); | ||
| 79 | |||
| 80 | let pins = uarte::Pins { | ||
| 81 | rxd: port0.p0_08.into_floating_input().degrade(), | ||
| 82 | txd: port0 | ||
| 83 | .p0_06 | ||
| 84 | .into_push_pull_output(gpio::Level::Low) | ||
| 85 | .degrade(), | ||
| 86 | cts: None, | ||
| 87 | rts: None, | ||
| 88 | }; | ||
| 89 | |||
| 90 | // NOTE(unsafe): Safe becasue we do not use `mem::forget` anywhere. | ||
| 91 | let uart = unsafe { | ||
| 92 | uarte::Uarte::new( | ||
| 93 | p.UARTE0, | ||
| 94 | interrupt::take!(UARTE0_UART0), | ||
| 95 | pins, | ||
| 96 | uarte::Parity::EXCLUDED, | ||
| 97 | uarte::Baudrate::BAUD115200, | ||
| 98 | ) | ||
| 99 | }; | ||
| 100 | |||
| 101 | unwrap!(executor.spawn(run(uart))); | ||
| 102 | |||
| 103 | loop { | ||
| 104 | executor.run(); | ||
| 105 | cortex_m::asm::wfe(); | ||
| 106 | } | ||
| 107 | } | ||
