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>
58 lines
1.6 KiB
Rust
58 lines
1.6 KiB
Rust
//! This example shows how to use the DAC on PIN 25 and 26
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//! You can connect an LED (with a suitable resistor) or check the changing
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//! voltage using a voltmeter on those pins.
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#![no_std]
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#![no_main]
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use esp32_hal::{
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clock::ClockControl,
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dac,
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gpio::IO,
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peripherals::Peripherals,
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prelude::*,
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timer::TimerGroup,
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Delay,
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Rtc,
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};
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use esp_backtrace 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 system = peripherals.DPORT.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 MWDT and RWDT (Watchdog) flash boot protection
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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 pin25 = io.pins.gpio25.into_analog();
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let pin26 = io.pins.gpio26.into_analog();
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// Create DAC instances
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let analog = peripherals.SENS.split();
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let mut dac1 = dac::DAC1::dac(analog.dac1, pin25).unwrap();
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let mut dac2 = dac::DAC2::dac(analog.dac2, pin26).unwrap();
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let mut delay = Delay::new(&clocks);
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let mut voltage_dac1: u8 = 200;
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let mut voltage_dac2: u8 = 255;
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loop {
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// Change voltage on the pins using write function
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voltage_dac1 = voltage_dac1.wrapping_add(1);
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dac1.write(voltage_dac1);
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voltage_dac2 = voltage_dac2.wrapping_sub(1);
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dac2.write(voltage_dac2);
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delay.delay_ms(50u32);
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}
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}
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