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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
62 lines
1.4 KiB
Rust
62 lines
1.4 KiB
Rust
//! Demonstrates generating pulse sequences with RMT
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//! Connect a logic analyzer to GPIO1 to see the generated pulses.
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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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gpio::IO,
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peripherals::Peripherals,
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prelude::*,
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rmt::{PulseCode, TxChannel, TxChannelConfig, TxChannelCreator},
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Delay,
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Rmt,
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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 rmt = Rmt::new(peripherals.RMT, 8u32.MHz(), &clocks).unwrap();
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let mut channel = rmt
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.channel0
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.configure(
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io.pins.gpio1,
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TxChannelConfig {
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clk_divider: 255,
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..TxChannelConfig::default()
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},
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)
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.unwrap();
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let mut delay = Delay::new(&clocks);
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let mut data = [PulseCode {
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level1: true,
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length1: 200,
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level2: false,
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length2: 50,
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}; 20];
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data[data.len() - 2] = PulseCode {
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level1: true,
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length1: 3000,
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level2: false,
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length2: 500,
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};
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data[data.len() - 1] = PulseCode::default();
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loop {
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let transaction = channel.transmit(&data);
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channel = transaction.wait().unwrap();
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delay.delay_ms(500u32);
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}
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}
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