cf270700e7
* Update PACs and modify `esp-hal-common` to use new `esp-riscv-rt` package * Update `esp32c2-hal` and `esp32c3-hal` to use `esp-riscv-rt` as well * Update all RISC-V examples to use `esp-riscv-rt` * Update RISC-V trap frame handling according to review feedback
62 lines
1.7 KiB
Rust
62 lines
1.7 KiB
Rust
//! Connect a potentiometer to PIN2 and see the read values change when
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//! rotating the shaft. Alternatively you could also connect the PIN to GND or
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//! 3V3 to see the maximum and minimum raw values read.
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#![no_std]
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#![no_main]
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use esp32c2_hal::{
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adc::{AdcConfig, Attenuation, ADC, ADC1},
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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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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 esp_println::println;
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use esp_riscv_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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// Disable the watchdog timers. For the ESP32-C2, this includes the Super WDT,
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// the RTC WDT, and the TIMG WDTs.
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let mut rtc = Rtc::new(peripherals.RTC_CNTL);
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let timer_group0 = TimerGroup::new(peripherals.TIMG0, &clocks);
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let mut wdt0 = timer_group0.wdt;
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rtc.swd.disable();
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rtc.rwdt.disable();
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wdt0.disable();
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let io = IO::new(peripherals.GPIO, peripherals.IO_MUX);
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// Create ADC instances
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let analog = peripherals.APB_SARADC.split();
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let mut adc1_config = AdcConfig::new();
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let mut pin = adc1_config.enable_pin(io.pins.gpio2.into_analog(), Attenuation::Attenuation11dB);
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let mut adc1 = ADC::<ADC1>::adc(
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&mut system.peripheral_clock_control,
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analog.adc1,
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adc1_config,
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)
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.unwrap();
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let mut delay = Delay::new(&clocks);
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loop {
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let pin_value: u16 = nb::block!(adc1.read(&mut pin)).unwrap();
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println!("PIN2 ADC reading = {}", pin_value);
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delay.delay_ms(1500u32);
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}
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}
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