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db409ffe7b
* Unify the system peripheral Whilst the PCR, SYSTEM and DPORT peripherals are different, we currently use them all in the same way. This PR unifies the peripheral name in the hal to `SYSTEM`. The idea is that they all do the same sort of thing, so we can collect them under the same name, and later down the line we can being to expose differences under an extended API. The benifits to this are imo quite big, the examples now are all identical, which makes things easier for esp-wifi, and paves a path towards the multichip hal. Why not do this in the PAC? Imo the pac should be as close to the hardware as possible, and the HAL is where we should abstractions such as this. * changelog
42 lines
1.2 KiB
Rust
42 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 esp32c6_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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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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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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