//go:build examples // +build examples // Copyright 2024 The Periph Authors. All rights reserved. // Use of this source code is governed under the Apache License, Version 2.0 // that can be found in the LICENSE file. package scd4x_test import ( "fmt" "log" "periph.io/x/conn/v3/i2c/i2creg" "periph.io/x/devices/v3/scd4x" "periph.io/x/host/v3" ) // basic example program for scd4x sensors using this library. // // To execute this as a stand-alone program: // // Copy the file example_test.go to a new directory. // rename the file to main.go // rename the Example() function to main, and the package to main // // execute: // // go mod init mydomain.com/scd4x // go mod tidy // go build -o main main.go // ./main func Example() { fmt.Println("scd4x example program") if _, err := host.Init(); err != nil { fmt.Println(err) } bus, err := i2creg.Open("") if err != nil { log.Fatal(err) } dev, err := scd4x.NewI2C(bus, scd4x.SensorAddress) if err != nil { log.Fatal(err) } env := scd4x.Env{} err = dev.Sense(&env) if err == nil { fmt.Println(env.String()) } else { fmt.Println(err) } cfg, err := dev.GetConfiguration() if err == nil { fmt.Printf("Configuration: %#v\n", cfg) } else { fmt.Println(err) } // Output: Temperature: 24.845°C Humidity: 32.3%rH CO2: 581 PPM // Configuration: &scd4x.DevConfig{AmbientPressure:0, ASCEnabled:true, ASCInitialPeriod:158400000000000, ASCStandardPeriod:561600000000000, ASCTarget:400, SensorAltitude:0, SerialNumber:127207989525260, TemperatureOffset:4, SensorType:0} }