248fb356f8
* Add the peripheral module plus some helper macros in preparation * peripheral macro * Add peripheral generation macro * Fixes after rebase * Update the signature of Peripherals::take * syncronise hello world example * fmt the entire repo Co-authored-by: Jesse Braham <jesse@beta7.io>
91 lines
2.3 KiB
Rust
91 lines
2.3 KiB
Rust
//! Turns on LED with the option to change LED intensity depending on `duty`
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//! value. Possible values (`u32`) are in range 0..100.
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//!
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//! This assumes that a LED is connected to the pin assigned to `led`. (GPIO4)
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#![no_std]
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#![no_main]
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use esp32s2_hal::{
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clock::ClockControl,
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gpio::IO,
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ledc::{
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channel::{self, ChannelIFace},
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timer::{self, TimerIFace},
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LSGlobalClkSource,
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LowSpeed,
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LEDC,
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},
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peripherals::Peripherals,
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prelude::*,
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timer::TimerGroup,
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Rtc,
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};
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use esp_backtrace as _;
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use esp_println;
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use xtensa_atomic_emulation_trap as _;
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use xtensa_lx_rt::entry;
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#[entry]
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fn main() -> ! {
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let peripherals = Peripherals::take();
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let mut system = peripherals.SYSTEM.split();
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let clocks = ClockControl::boot_defaults(system.clock_control).freeze();
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let timer_group0 = TimerGroup::new(peripherals.TIMG0, &clocks);
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let mut wdt = timer_group0.wdt;
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let mut rtc = Rtc::new(peripherals.RTC_CNTL);
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// Disable watchdog timer
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wdt.disable();
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rtc.rwdt.disable();
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let io = IO::new(peripherals.GPIO, peripherals.IO_MUX);
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let led = io.pins.gpio4.into_push_pull_output();
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let mut ledc = LEDC::new(
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peripherals.LEDC,
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&clocks,
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&mut system.peripheral_clock_control,
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);
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ledc.set_global_slow_clock(LSGlobalClkSource::APBClk);
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let mut lstimer0 = ledc.get_timer::<LowSpeed>(timer::Number::Timer2);
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lstimer0
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.configure(timer::config::Config {
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duty: timer::config::Duty::Duty5Bit,
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clock_source: timer::LSClockSource::APBClk,
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frequency: 24u32.kHz(),
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})
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.unwrap();
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let mut channel0 = ledc.get_channel(channel::Number::Channel0, led);
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channel0
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.configure(channel::config::Config {
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timer: &lstimer0,
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duty_pct: 10,
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})
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.unwrap();
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loop {}
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}
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#[xtensa_lx_rt::exception]
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fn exception(
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cause: xtensa_lx_rt::exception::ExceptionCause,
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frame: xtensa_lx_rt::exception::Context,
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) {
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use esp_println::*;
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println!("\n\nException occured {:?} {:x?}", cause, frame);
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let backtrace = esp_backtrace::arch::backtrace();
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for b in backtrace.iter() {
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if let Some(addr) = b {
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println!("0x{:x}", addr)
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}
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}
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}
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