Crate anyleaf[−][src]

Expand description

Driver for the AnyLeaf ph module. Allows you to measure pH using high-level code. See the Github repository for complete examples on the Rasperry Pi and stm32f3.

Example for Rasperry Pi, and other ph_linux systems: Cargo.toml:

[package]
name = "anyleaf_linux_example"
version = "0.1.0"
authors = ["Anyleaf <anyleaf@anyleaf.org>"]
edition = "2018"

[dependencies]
embedded-hal = "^0.2.3"
ph_linux-embedded-hal = "^0.3.0"
anyleaf = "^0.1.6"

main.rs:

use embedded_hal::blocking::delay::DelayMs;
use linux_embedded_hal::{Delay, I2cdev};
use anyleaf::{PhSensor, CalPt, CalSlot, TempSource};

fn main() {
   let i2c = I2cdev::new("/dev/i2c-1").unwrap();
   let mut ph_sensor = PhSensor::new(i2c);

   // 2 or 3 pt calibration both give acceptable results.
   // Calibrate with known values. (voltage, pH, temp in °C).
   // You can find voltage and temperature with `ph_sensor.read_voltage()` and
   // `ph_sensor.read_temp()` respectively.
   // For 3 pt calibration, pass a third argument to `calibrate_all`.
   ph_sensor.calibrate_all(
       CalPt::new(0., 7., 25.), CalPt::new(0.17, 4., 25.), None,
   );

   // Or, call these with the sensor in the appropriate buffer solution.
   // This will automatically use voltage and temperature.
   // Voltage and Temp are returned, but calibration occurs
   // without using the return values.
   // (V, T) = ph_sensor.calibrate(CalSlot::One, 7.);
   // ph_sensor.calibrate(CalSlot::Two, 4.);

   // Store the calibration parameters somewhere, so they persist
   // between program runs.

   let mut delay = Delay {};

   loop {
       let pH = ph_sensor.read(TempSource::OnBoard).unwrap();
       println!("pH: {}", pH);

       delay.delay_ms(1000);
   }
}