//! Blinks an LED
//!
//! This assumes that a LED is connected to GPIO4.
//! Depending on your target and the board you are using you should change the pin.
//! If your board doesn't have on-board LEDs don't forget to add an appropriate resistor.
//!
use esp_idf_svc::hal::delay::FreeRtos;
use esp_idf_svc::hal::gpio::*;
use esp_idf_svc::hal::peripherals::Peripherals;
fn main() -> anyhow::Result<()> {
esp_idf_svc::sys::link_patches();
let peripherals = Peripherals::take().unwrap();
let mut led = PinDriver::output(peripherals.pins.gpio4)?;
println!("Hello world!");
loop {
led.set_high()?;
// we are sleeping here to make sure the watchdog isn't triggered
FreeRtos::delay_ms(1000);
led.set_low()?;
FreeRtos::delay_ms(1000);
}
}
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esp:3V3
esp:5V
esp:GND.1
esp:TX
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esp:GND.2
led1:A
led1:C
r1:1
r1:2