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https://github.com/esp-rs/esp-idf-hal.git
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8cd8c8c207
* spi_st7789_example * added adc example * added ADC example * spi and adc examples * updated adc_st7789 example * removed st7789 adc example * adc up to date * clippy and fmt * added dependencies * adjusted path to assets * changed adc pin * added compile flags * path
45 lines
1.5 KiB
Rust
45 lines
1.5 KiB
Rust
//! ADC example, reading a value form a pin and printing it on the terminal
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//!
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use esp_idf_sys::{self as _}; // If using the `binstart` feature of `esp-idf-sys`, always keep this module imported
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use std::thread;
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use std::time::Duration;
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use esp_idf_hal::adc::config::Config;
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use esp_idf_hal::adc::Atten11dB;
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use esp_idf_hal::adc::*;
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use esp_idf_hal::peripherals::Peripherals;
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#[cfg(not(esp32))]
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use esp_idf_hal::gpio::Gpio4;
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#[cfg(esp32)]
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use esp_idf_hal::gpio::Gpio12;
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fn main() -> anyhow::Result<()> {
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let peripherals = Peripherals::take().unwrap();
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#[cfg(not(esp32))]
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let mut adc = AdcDriver::new(peripherals.adc1, &Config::new().calibration(true))?;
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#[cfg(esp32)]
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let mut adc = AdcDriver::new(peripherals.adc2, &Config::new().calibration(true))?;
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// configuring pin to analog read, you can regulate the adc input voltage range depending on your need
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// for this example we use the attenuation of 11db which sets the input voltage range to around 0-3.6V
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#[cfg(not(esp32))]
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let mut adc_pin: esp_idf_hal::adc::AdcChannelDriver<'_, Gpio4, Atten11dB<_>> =
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AdcChannelDriver::new(peripherals.pins.gpio4)?;
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#[cfg(esp32)]
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let mut adc_pin: esp_idf_hal::adc::AdcChannelDriver<'_, Gpio12, Atten11dB<_>> =
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AdcChannelDriver::new(peripherals.pins.gpio12)?;
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loop {
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// you can change the sleep duration depending on how often you want to sample
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thread::sleep(Duration::from_millis(10));
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println!("ADC value: {}", adc.read(&mut adc_pin).unwrap());
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}
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}
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