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https://github.com/esp-rs/esp-hal.git
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3079d9cc49
* Create an `embedded-hal-02` feature and gate implementations, rename `eh1` to `embedded-hal` * Use native `Delay` APIs in examples where applicable * Fix example imports, be explicit about about `embedded-hal-02` feature requirements * Update `CHANGELOG.md`
81 lines
2.2 KiB
Rust
81 lines
2.2 KiB
Rust
//! This shows a very basic example of running code on the LP core.
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//!
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//! Code on LP core uses LP_UART initialized on HP core. For more information
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//! check `lp_core_uart` example in the `esp-lp-hal.
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//!
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//! Make sure to first compile the `esp-lp-hal/examples/uart.rs` example
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//% CHIPS: esp32c6
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//% FEATURES: embedded-hal-02
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#![no_std]
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#![no_main]
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use embedded_hal_02::serial::Read;
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use esp_backtrace as _;
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use esp_hal::{
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clock::ClockControl,
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gpio::{lp_gpio::IntoLowPowerPin, IO},
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lp_core::{LpCore, LpCoreWakeupSource},
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peripherals::Peripherals,
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prelude::*,
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uart::{
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config::{Config, DataBits, Parity, StopBits},
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lp_uart::LpUart,
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TxRxPins,
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Uart,
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},
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};
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use esp_println::println;
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#[entry]
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fn main() -> ! {
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let peripherals = Peripherals::take();
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let system = peripherals.SYSTEM.split();
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let clocks = ClockControl::boot_defaults(system.clock_control).freeze();
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let io = IO::new(peripherals.GPIO, peripherals.IO_MUX);
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// Set up (HP) UART1:
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let config = Config {
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baudrate: 115_200,
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data_bits: DataBits::DataBits8,
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parity: Parity::ParityNone,
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stop_bits: StopBits::STOP1,
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};
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let pins = TxRxPins::new_tx_rx(
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io.pins.gpio6.into_push_pull_output(),
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io.pins.gpio7.into_floating_input(),
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);
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let mut uart1 = Uart::new_with_config(peripherals.UART1, config, Some(pins), &clocks);
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// Set up (LP) UART:
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let lp_tx = io.pins.gpio5.into_low_power().into_push_pull_output();
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let lp_rx = io.pins.gpio4.into_low_power().into_floating_input();
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let lp_uart = LpUart::new(peripherals.LP_UART, lp_tx, lp_rx);
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let mut lp_core = LpCore::new(peripherals.LP_CORE);
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lp_core.stop();
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println!("lp core stopped");
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// Load code to LP core:
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let lp_core_code =
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load_lp_code!("../esp-lp-hal/target/riscv32imac-unknown-none-elf/release/examples/uart");
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// Start LP core:
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lp_core_code.run(&mut lp_core, LpCoreWakeupSource::HpCpu, lp_uart);
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println!("lpcore run");
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loop {
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let read = nb::block!(uart1.read());
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match read {
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Ok(read) => println!("Read 0x{:02x}", read),
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Err(err) => println!("Error {:?}", err),
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}
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}
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}
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