mirror of
https://github.com/esp-rs/esp-hal.git
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0064766ef2
* No longer publicly expose the `PeripheralClockControl` struct * Update examples as needed to get things building again * Update CHANGELOG.md * Address review feedback, fix a warning * Use a critical section for all devices other than the ESP32-C6/H2, as they modify multiple registers * Rebase and update `etm` driver to fix build errors
43 lines
1.2 KiB
Rust
43 lines
1.2 KiB
Rust
//! Control LED on GPIO 1 by the BOOT-BUTTON via ETM
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#![no_std]
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#![no_main]
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use esp32h2_hal::{
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clock::ClockControl,
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etm::Etm,
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gpio::{etm::GpioEtmChannels, IO},
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peripherals::Peripherals,
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prelude::*,
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};
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use esp_backtrace as _;
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#[entry]
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fn main() -> ! {
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esp_println::logger::init_logger_from_env();
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let peripherals = Peripherals::take();
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let system = peripherals.PCR.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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let mut led = io.pins.gpio1.into_push_pull_output();
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let button = io.pins.gpio9.into_pull_down_input();
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led.set_high().unwrap();
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// setup ETM
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let gpio_ext = GpioEtmChannels::new(peripherals.GPIO_SD);
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let led_task = gpio_ext.channel0_task.toggle(&mut led);
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let button_event = gpio_ext.channel0_event.falling_edge(button);
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let etm = Etm::new(peripherals.SOC_ETM);
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let channel0 = etm.channel0;
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// make sure the configured channel doesn't get dropped - dropping it will
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// disable the channel
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let _configured_channel = channel0.setup(&button_event, &led_task);
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// the LED is controlled by the button without involving the CPU
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loop {}
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}
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